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class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Aerostat"> <div class="vector-toc-text"> 1.2 Aerostat </div> </a> <ul id="toc-Aerostat-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Blimp" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Blimp"> <div class="vector-toc-text"> 1.3 Blimp </div> </a> <ul id="toc-Blimp-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Zeppelin" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Zeppelin"> <div class="vector-toc-text"> 1.4 Zeppelin </div> </a> <ul id="toc-Zeppelin-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Hybrid_airship" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Hybrid_airship"> <div class="vector-toc-text"> 1.5 Hybrid airship </div> </a> <ul id="toc-Hybrid_airship-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Classification" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Classification"> <div class="vector-toc-text"> 2 Classification </div> </a> <button aria-controls="toc-Classification-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Classification subsection </button> <ul id="toc-Classification-sublist" class="vector-toc-list"> <li id="toc-Rigid" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Rigid"> <div class="vector-toc-text"> 2.1 Rigid </div> </a> <ul id="toc-Rigid-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Semi-rigid" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Semi-rigid"> <div class="vector-toc-text"> 2.2 Semi-rigid </div> </a> <ul id="toc-Semi-rigid-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Non-rigid" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Non-rigid"> <div class="vector-toc-text"> 2.3 Non-rigid </div> </a> <ul id="toc-Non-rigid-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Construction" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Construction"> <div class="vector-toc-text"> 3 Construction </div> </a> <button aria-controls="toc-Construction-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Construction subsection </button> <ul id="toc-Construction-sublist" class="vector-toc-list"> <li id="toc-Envelope" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Envelope"> <div class="vector-toc-text"> 3.1 Envelope </div> </a> <ul id="toc-Envelope-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ballonet" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Ballonet"> <div class="vector-toc-text"> 3.2 Ballonet </div> </a> <ul id="toc-Ballonet-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lifting_gas" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Lifting_gas"> <div class="vector-toc-text"> 3.3 Lifting gas </div> </a> <ul id="toc-Lifting_gas-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Gondola" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Gondola"> <div class="vector-toc-text"> 3.4 Gondola </div> </a> <ul id="toc-Gondola-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Propulsion_and_control" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Propulsion_and_control"> <div class="vector-toc-text"> 3.5 Propulsion and control </div> </a> <ul id="toc-Propulsion_and_control-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Fins_and_rudders" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Fins_and_rudders"> <div class="vector-toc-text"> 3.6 Fins and rudders </div> </a> <ul id="toc-Fins_and_rudders-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Empennage" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Empennage"> <div class="vector-toc-text"> 3.7 Empennage </div> </a> <ul id="toc-Empennage-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Fuel_and_power_systems" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Fuel_and_power_systems"> <div class="vector-toc-text"> 3.8 Fuel and power systems </div> </a> <ul id="toc-Fuel_and_power_systems-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Navigation_and_communication_equipment" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Navigation_and_communication_equipment"> <div class="vector-toc-text"> 3.9 Navigation and communication equipment </div> </a> <ul id="toc-Navigation_and_communication_equipment-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Landing_gear" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Landing_gear"> <div class="vector-toc-text"> 3.10 Landing gear </div> </a> <ul id="toc-Landing_gear-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Performance" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Performance"> <div class="vector-toc-text"> 4 Performance </div> </a> <button aria-controls="toc-Performance-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Performance subsection </button> <ul id="toc-Performance-sublist" class="vector-toc-list"> <li id="toc-Efficiency" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Efficiency"> <div class="vector-toc-text"> 4.1 Efficiency </div> </a> <ul id="toc-Efficiency-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> 5 History </div> </a> <button aria-controls="toc-History-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle History subsection </button> <ul id="toc-History-sublist" class="vector-toc-list"> <li id="toc-Early_pioneers" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Early_pioneers"> <div class="vector-toc-text"> 5.1 Early pioneers </div> </a> <ul id="toc-Early_pioneers-sublist" class="vector-toc-list"> <li id="toc-17th–18th_century" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#17th–18th_century"> <div class="vector-toc-text"> 5.1.1 17th–18th century </div> </a> <ul id="toc-17th–18th_century-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-19th_century" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#19th_century"> <div class="vector-toc-text"> 5.1.2 19th century </div> </a> <ul id="toc-19th_century-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Early_20th_century" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Early_20th_century"> <div class="vector-toc-text"> 5.2 Early 20th century </div> </a> <ul id="toc-Early_20th_century-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-World_War_I" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#World_War_I"> <div class="vector-toc-text"> 5.3 World War I </div> </a> <ul id="toc-World_War_I-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-The_interwar_period" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#The_interwar_period"> <div class="vector-toc-text"> 5.4 The interwar period </div> </a> <ul id="toc-The_interwar_period-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-World_War_II" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#World_War_II"> <div class="vector-toc-text"> 5.5 World War II </div> </a> <ul id="toc-World_War_II-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Postwar_period" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Postwar_period"> <div class="vector-toc-text"> 5.6 Postwar period </div> </a> <ul id="toc-Postwar_period-sublist" class="vector-toc-list"> <li id="toc-Postwar_projects" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Postwar_projects"> <div class="vector-toc-text"> 5.6.1 Postwar projects </div> </a> <ul id="toc-Postwar_projects-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> </ul> </li> <li id="toc-Modern" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Modern"> <div class="vector-toc-text"> 6 Modern </div> </a> <button aria-controls="toc-Modern-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Modern subsection </button> <ul id="toc-Modern-sublist" class="vector-toc-list"> <li id="toc-Military" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Military"> <div class="vector-toc-text"> 6.1 Military </div> </a> <ul id="toc-Military-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Passenger_transport" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Passenger_transport"> <div class="vector-toc-text"> 6.2 Passenger transport </div> </a> <ul id="toc-Passenger_transport-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Exploration" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Exploration"> <div class="vector-toc-text"> 6.3 Exploration </div> </a> <ul id="toc-Exploration-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Thermal" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Thermal"> <div class="vector-toc-text"> 6.4 Thermal </div> </a> <ul id="toc-Thermal-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Unmanned_remote" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Unmanned_remote"> <div class="vector-toc-text"> 6.5 Unmanned remote </div> </a> <ul id="toc-Unmanned_remote-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Adventures" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Adventures"> <div class="vector-toc-text"> 6.6 Adventures </div> </a> <ul id="toc-Adventures-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Current_design_projects" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Current_design_projects"> <div class="vector-toc-text"> 7 Current design projects </div> </a> <button aria-controls="toc-Current_design_projects-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Current design projects subsection </button> <ul id="toc-Current_design_projects-sublist" class="vector-toc-list"> <li id="toc-Heavy_lifting" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Heavy_lifting"> <div class="vector-toc-text"> 7.1 Heavy lifting </div> </a> <ul id="toc-Heavy_lifting-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Metal-clad_airships" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Metal-clad_airships"> <div class="vector-toc-text"> 7.2 Metal-clad airships </div> </a> <ul id="toc-Metal-clad_airships-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Hybrid_airships" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Hybrid_airships"> <div class="vector-toc-text"> 7.3 Hybrid airships </div> </a> <ul id="toc-Hybrid_airships-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Airships_in_space_exploration" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Airships_in_space_exploration"> <div class="vector-toc-text"> 7.4 Airships in space exploration </div> </a> <ul id="toc-Airships_in_space_exploration-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cruiser_feeder_transport_airship" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Cruiser_feeder_transport_airship"> <div class="vector-toc-text"> 7.5 Cruiser feeder transport airship </div> </a> <ul id="toc-Cruiser_feeder_transport_airship-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Airships_for_humanitarian_and_cargo_transport" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Airships_for_humanitarian_and_cargo_transport"> <div class="vector-toc-text"> 7.6 Airships for humanitarian and cargo transport </div> </a> <ul id="toc-Airships_for_humanitarian_and_cargo_transport-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Comparison_with_heavier-than-air_aircraft" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Comparison_with_heavier-than-air_aircraft"> <div class="vector-toc-text"> 8 Comparison with heavier-than-air aircraft </div> </a> <ul id="toc-Comparison_with_heavier-than-air_aircraft-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Safety" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Safety"> <div class="vector-toc-text"> 9 Safety </div> </a> <ul id="toc-Safety-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Licensing" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Licensing"> <div class="vector-toc-text"> 10 Licensing </div> </a> <ul id="toc-Licensing-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> 11 See also </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> 12 Notes </div> </a> <ul id="toc-Notes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> 13 References </div> </a> <button aria-controls="toc-References-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle References subsection </button> <ul id="toc-References-sublist" class="vector-toc-list"> <li id="toc-Citations" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Citations"> <div class="vector-toc-text"> 13.1 Citations </div> </a> <ul id="toc-Citations-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliography" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Bibliography"> <div class="vector-toc-text"> 13.2 Bibliography </div> </a> <ul id="toc-Bibliography-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> 14 External links </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" > Toggle the table of contents </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading">Airship</h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 84 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-84" aria-hidden="true" > 84 languages </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Lugskip" title="Lugskip – Afrikaans" lang="af" hreflang="af" data-title="Lugskip" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target">Afrikaans</a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Luftschiff" title="Luftschiff – Alemannic" lang="gsw" hreflang="gsw" data-title="Luftschiff" data-language-autonym="Alemannisch" data-language-local-name="Alemannic" class="interlanguage-link-target">Alemannisch</a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/Lyftscip" title="Lyftscip – Old English" lang="ang" hreflang="ang" data-title="Lyftscip" data-language-autonym="Ænglisc" data-language-local-name="Old English" class="interlanguage-link-target">Ænglisc</a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B3%D9%81%D9%8A%D9%86%D8%A9_%D9%87%D9%88%D8%A7%D8%A6%D9%8A%D8%A9" title="سفينة هوائية – Arabic" lang="ar" hreflang="ar" data-title="سفينة هوائية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target">العربية</a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Dirixible" title="Dirixible – Asturian" lang="ast" hreflang="ast" data-title="Dirixible" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target">Asturianu</a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%86%E0%A6%95%E0%A6%BE%E0%A6%B6%E0%A6%A4%E0%A6%B0%E0%A7%80" title="আকাশতরী – Bangla" lang="bn" hreflang="bn" data-title="আকাশতরী" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target">বাংলা</a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Hui-h%C3%AAng-ch%C3%BBn" title="Hui-hêng-chûn – Minnan" lang="nan" hreflang="nan" data-title="Hui-hêng-chûn" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target">閩南語 / Bân-lâm-gú</a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%94%D1%8B%D1%80%D1%8B%D0%B6%D0%B0%D0%B1%D0%BB%D1%8C" title="Дырыжабль – Belarusian" lang="be" hreflang="be" data-title="Дырыжабль" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target">Беларуская</a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%94%D1%8B%D1%80%D1%8B%D0%B6%D0%B0%D0%B1%D0%BB%D1%8C" title="Дырыжабль – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Дырыжабль" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target">Беларуская (тарашкевіца)</a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%94%D0%B8%D1%80%D0%B8%D0%B6%D0%B0%D0%B1%D1%8A%D0%BB" title="Дирижабъл – Bulgarian" lang="bg" hreflang="bg" data-title="Дирижабъл" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target">Български</a></li><li class="interlanguage-link interwiki-bxr mw-list-item"><a href="https://bxr.wikipedia.org/wiki/%D0%94%D0%B8%D1%80%D0%B8%D0%B6%D0%B0%D0%B1%D0%BB%D1%8C" title="Дирижабль – Russia Buriat" lang="bxr" hreflang="bxr" data-title="Дирижабль" data-language-autonym="Буряад" data-language-local-name="Russia Buriat" class="interlanguage-link-target">Буряад</a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Dirigible" title="Dirigible – Catalan" lang="ca" hreflang="ca" data-title="Dirigible" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target">Català</a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%94%D0%B8%D1%80%D0%B8%D0%B6%D0%B0%D0%B1%D0%BB%D1%8C" title="Дирижабль – Chuvash" lang="cv" hreflang="cv" data-title="Дирижабль" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target">Чӑвашла</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Vzducholo%C4%8F" title="Vzducholoď – Czech" lang="cs" hreflang="cs" data-title="Vzducholoď" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Awyrlong" title="Awyrlong – Welsh" lang="cy" hreflang="cy" data-title="Awyrlong" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target">Cymraeg</a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Luftskib" title="Luftskib – Danish" lang="da" hreflang="da" data-title="Luftskib" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target">Dansk</a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D9%85%D9%86%D8%B7%D8%A7%D8%AF" title="منطاد – Moroccan Arabic" lang="ary" hreflang="ary" data-title="منطاد" data-language-autonym="الدارجة" data-language-local-name="Moroccan Arabic" class="interlanguage-link-target">الدارجة</a></li><li class="interlanguage-link interwiki-de badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://de.wikipedia.org/wiki/Luftschiff" title="Luftschiff – German" lang="de" hreflang="de" data-title="Luftschiff" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/%C3%95hulaev" title="Õhulaev – Estonian" lang="et" hreflang="et" data-title="Õhulaev" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Dirigible" title="Dirigible – Spanish" lang="es" hreflang="es" data-title="Dirigible" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Aer%C5%9Dipo" title="Aerŝipo – Esperanto" lang="eo" hreflang="eo" data-title="Aerŝipo" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target">Esperanto</a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Baloi_gidatu" title="Baloi gidatu – Basque" lang="eu" hreflang="eu" data-title="Baloi gidatu" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target">Euskara</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%A9%D8%B4%D8%AA%DB%8C_%D9%87%D9%88%D8%A7%DB%8C%DB%8C" title="کشتی هوایی – Persian" lang="fa" hreflang="fa" data-title="کشتی هوایی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Ballon_dirigeable" title="Ballon dirigeable – French" lang="fr" hreflang="fr" data-title="Ballon dirigeable" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Loftskip" title="Loftskip – Western Frisian" lang="fy" hreflang="fy" data-title="Loftskip" data-language-autonym="Frysk" data-language-local-name="Western Frisian" class="interlanguage-link-target">Frysk</a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Aerlong" title="Aerlong – Irish" lang="ga" hreflang="ga" data-title="Aerlong" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target">Gaeilge</a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Dirixible" title="Dirixible – Galician" lang="gl" hreflang="gl" data-title="Dirixible" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target">Galego</a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B9%84%ED%96%89%EC%84%A0" title="비행선 – Korean" lang="ko" hreflang="ko" data-title="비행선" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B4%D5%AB%D6%80%D5%AB%D5%AA%D5%A1%D5%A2%D5%AC" title="Դիրիժաբլ – Armenian" lang="hy" hreflang="hy" data-title="Դիրիժաբլ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target">Հայերեն</a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Zra%C4%8Dni_brod" title="Zračni brod – Croatian" lang="hr" hreflang="hr" data-title="Zračni brod" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target">Hrvatski</a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Direkteblo" title="Direkteblo – Ido" lang="io" hreflang="io" data-title="Direkteblo" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target">Ido</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kapal_udara" title="Kapal udara – Indonesian" lang="id" hreflang="id" data-title="Kapal udara" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Dirigibile" title="Dirigibile – Interlingua" lang="ia" hreflang="ia" data-title="Dirigibile" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target">Interlingua</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Dirigibile" title="Dirigibile – Italian" lang="it" hreflang="it" data-title="Dirigibile" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A1%D7%A4%D7%99%D7%A0%D7%AA_%D7%90%D7%95%D7%95%D7%99%D7%A8" title="ספינת אוויר – Hebrew" lang="he" hreflang="he" data-title="ספינת אוויר" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target">עברית</a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%93%E1%83%98%E1%83%A0%E1%83%98%E1%83%9F%E1%83%90%E1%83%91%E1%83%9A%E1%83%98" title="დირიჟაბლი – Georgian" lang="ka" hreflang="ka" data-title="დირიჟაბლი" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target">ქართული</a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%94%D0%B8%D1%80%D0%B8%D0%B6%D0%B0%D0%B1%D0%BB%D1%8C" title="Дирижабль – Kazakh" lang="kk" hreflang="kk" data-title="Дирижабль" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target">Қазақша</a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Ndegeputo" title="Ndegeputo – Swahili" lang="sw" hreflang="sw" data-title="Ndegeputo" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target">Kiswahili</a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%94%D0%B8%D1%80%D0%B8%D0%B6%D0%B0%D0%B1%D0%BB%D1%8C" title="Дирижабль – Kyrgyz" lang="ky" hreflang="ky" data-title="Дирижабль" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target">Кыргызча</a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Navis_a%C3%ABria" title="Navis aëria – Latin" lang="la" hreflang="la" data-title="Navis aëria" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target">Latina</a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Diri%C5%BEablis" title="Dirižablis – Latvian" lang="lv" hreflang="lv" data-title="Dirižablis" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target">Latviešu</a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Diri%C5%BEablis" title="Dirižablis – Lithuanian" lang="lt" hreflang="lt" data-title="Dirižablis" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target">Lietuvių</a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/L%C3%A9ghaj%C3%B3" title="Léghajó – Hungarian" lang="hu" hreflang="hu" data-title="Léghajó" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target">Magyar</a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%86%E0%B4%95%E0%B4%BE%E0%B4%B6%E0%B4%95%E0%B5%8D%E0%B4%95%E0%B4%AA%E0%B5%8D%E0%B4%AA%E0%B5%BD" title="ആകാശക്കപ്പൽ – Malayalam" lang="ml" hreflang="ml" data-title="ആകാശക്കപ്പൽ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target">മലയാളം</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Kapal_udara" title="Kapal udara – Malay" lang="ms" hreflang="ms" data-title="Kapal udara" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target">Bahasa Melayu</a></li><li class="interlanguage-link interwiki-min mw-list-item"><a href="https://min.wikipedia.org/wiki/Kapa_udaro" title="Kapa udaro – Minangkabau" lang="min" hreflang="min" data-title="Kapa udaro" data-language-autonym="Minangkabau" data-language-local-name="Minangkabau" class="interlanguage-link-target">Minangkabau</a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%9C%E1%80%B1%E1%80%9E%E1%80%84%E1%80%BA%E1%80%B9%E1%80%98%E1%80%B1%E1%80%AC" title="လေသင်္ဘော – Burmese" lang="my" hreflang="my" data-title="လေသင်္ဘော" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target">မြန်မာဘာသာ</a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Luchtschip" title="Luchtschip – Dutch" lang="nl" hreflang="nl" data-title="Luchtschip" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target">Nederlands</a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%A3%9B%E8%A1%8C%E8%88%B9" title="飛行船 – Japanese" lang="ja" hreflang="ja" data-title="飛行船" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target">日本語</a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Luchtskep" title="Luchtskep – Northern Frisian" lang="frr" hreflang="frr" data-title="Luchtskep" data-language-autonym="Nordfriisk" data-language-local-name="Northern Frisian" class="interlanguage-link-target">Nordfriisk</a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Luftskip" title="Luftskip – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Luftskip" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target">Norsk bokmål</a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Luftskip" title="Luftskip – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Luftskip" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target">Norsk nynorsk</a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Dirijabl" title="Dirijabl – Uzbek" lang="uz" hreflang="uz" data-title="Dirijabl" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target">Oʻzbekcha / ўзбекча</a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%DB%81%D9%88%D8%A7_%DA%A9%D8%B4%D8%AA%DB%8C" title="ہوا کشتی – Western Punjabi" lang="pnb" hreflang="pnb" data-title="ہوا کشتی" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target">پنجابی</a></li><li class="interlanguage-link interwiki-pcd mw-list-item"><a href="https://pcd.wikipedia.org/wiki/Balon_dirigeabe" title="Balon dirigeabe – Picard" lang="pcd" hreflang="pcd" data-title="Balon dirigeabe" data-language-autonym="Picard" data-language-local-name="Picard" class="interlanguage-link-target">Picard</a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Reonav" title="Reonav – Piedmontese" lang="pms" hreflang="pms" data-title="Reonav" data-language-autonym="Piemontèis" data-language-local-name="Piedmontese" class="interlanguage-link-target">Piemontèis</a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Sterowiec" title="Sterowiec – Polish" lang="pl" hreflang="pl" data-title="Sterowiec" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Dirig%C3%ADvel" title="Dirigível – Portuguese" lang="pt" hreflang="pt" data-title="Dirigível" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Dirijabil" title="Dirijabil – Romanian" lang="ro" hreflang="ro" data-title="Dirijabil" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%A6%D0%B5%D0%BF%D0%B5%D0%BB%D0%B8%D0%BD" title="Цепелин – Rusyn" lang="rue" hreflang="rue" data-title="Цепелин" data-language-autonym="Русиньскый" data-language-local-name="Rusyn" class="interlanguage-link-target">Русиньскый</a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%94%D0%B8%D1%80%D0%B8%D0%B6%D0%B0%D0%B1%D0%BB%D1%8C" title="Дирижабль – Russian" lang="ru" hreflang="ru" data-title="Дирижабль" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Luchtskip" title="Luchtskip – Saterland Frisian" lang="stq" hreflang="stq" data-title="Luchtskip" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" class="interlanguage-link-target">Seeltersk</a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Palluni_dirigg%C3%ACbbili" title="Palluni diriggìbbili – Sicilian" lang="scn" hreflang="scn" data-title="Palluni diriggìbbili" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target">Sicilianu</a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Airship" title="Airship – Simple English" lang="en-simple" hreflang="en-simple" data-title="Airship" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target">Simple English</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Vzducholo%C4%8F" title="Vzducholoď – Slovak" lang="sk" hreflang="sk" data-title="Vzducholoď" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Zra%C4%8Dna_ladja" title="Zračna ladja – Slovenian" lang="sl" hreflang="sl" data-title="Zračna ladja" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target">Slovenščina</a></li><li class="interlanguage-link interwiki-sr badge-Q70893996 mw-list-item" title=""><a href="https://sr.wikipedia.org/wiki/%D0%92%D0%B0%D0%B7%D0%B4%D1%83%D1%88%D0%BD%D0%B8_%D0%B1%D1%80%D0%BE%D0%B4" title="Ваздушни брод – Serbian" lang="sr" hreflang="sr" data-title="Ваздушни брод" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target">Српски / srpski</a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Zra%C4%8Dni_brod" title="Zračni brod – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Zračni brod" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target">Srpskohrvatski / српскохрватски</a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Ilmalaiva" title="Ilmalaiva – Finnish" lang="fi" hreflang="fi" data-title="Ilmalaiva" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Luftskepp" title="Luftskepp – Swedish" lang="sv" hreflang="sv" data-title="Luftskepp" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target">Svenska</a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Barkong_panghimpapawid" title="Barkong panghimpapawid – Tagalog" lang="tl" hreflang="tl" data-title="Barkong panghimpapawid" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target">Tagalog</a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a 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.hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Airship_(disambiguation)" class="mw-disambig" title="Airship (disambiguation)">Airship (disambiguation)</a>. "Dirigible" redirects here. For the 1931 film, see <a href="/wiki/Dirigible_(film)" title="Dirigible (film)">Dirigible (film)</a>. Not to be confused with <a href="/wiki/Balloon_(aeronautics)" title="Balloon (aeronautics)">Balloon (aeronautics)</a>.</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Zeppellin_NT_amk.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Zeppellin_NT_amk.JPG/220px-Zeppellin_NT_amk.JPG" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Zeppellin_NT_amk.JPG/330px-Zeppellin_NT_amk.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/df/Zeppellin_NT_amk.JPG/440px-Zeppellin_NT_amk.JPG 2x" data-file-width="3434" data-file-height="2289" /></a><figcaption>A modern airship, <a href="/wiki/Zeppelin_NT" title="Zeppelin NT">Zeppelin NT</a> D-LZZF in 2010</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Hindenburg_at_lakehurst_colorized.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Hindenburg_at_lakehurst_colorized.png/220px-Hindenburg_at_lakehurst_colorized.png" decoding="async" width="220" height="172" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Hindenburg_at_lakehurst_colorized.png/330px-Hindenburg_at_lakehurst_colorized.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Hindenburg_at_lakehurst_colorized.png/440px-Hindenburg_at_lakehurst_colorized.png 2x" data-file-width="2931" data-file-height="2298" /></a><figcaption>The <a href="/wiki/LZ_129_Hindenburg" title="LZ 129 Hindenburg">LZ 129 Hindenburg</a> was the largest airship ever built and was <a href="/wiki/Hindenburg_disaster" title="Hindenburg disaster">destroyed in 1937</a>.</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Brockhaus-Efron_Aeronavtika.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Brockhaus-Efron_Aeronavtika.jpg/120px-Brockhaus-Efron_Aeronavtika.jpg" decoding="async" width="120" height="194" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Brockhaus-Efron_Aeronavtika.jpg/180px-Brockhaus-Efron_Aeronavtika.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Brockhaus-Efron_Aeronavtika.jpg/240px-Brockhaus-Efron_Aeronavtika.jpg 2x" data-file-width="1624" data-file-height="2624" /></a><figcaption>Dirigible airships compared with related aerostats, from the <a href="/wiki/Brockhaus_and_Efron_Encyclopedic_Dictionary" title="Brockhaus and Efron Encyclopedic Dictionary">Brockhaus and Efron Encyclopedic Dictionary</a>, 1890–1907</figcaption></figure> An airship, dirigible balloon or dirigible is a type of <a href="/wiki/Aerostat" title="Aerostat">aerostat</a> (<a href="/wiki/Lighter-than-air" class="mw-redirect" title="Lighter-than-air">lighter-than-air</a>) <a href="/wiki/Aircraft" title="Aircraft">aircraft</a> that can navigate through the air flying <a href="/wiki/Powered_aircraft" class="mw-redirect" title="Powered aircraft">under its own power</a>.<a href="#cite_note-1">[1]</a> Aerostats use <a href="/wiki/Buoyancy" title="Buoyancy">buoyancy</a> from a <a href="/wiki/Lifting_gas" title="Lifting gas">lifting gas</a> that is less <a href="/wiki/Dense" class="mw-redirect" title="Dense">dense</a> than the surrounding <a href="/wiki/Air" class="mw-redirect" title="Air">air</a> to achieve the <a href="/wiki/Lift_(physics)" class="mw-redirect" title="Lift (physics)">lift</a> needed to stay airborne. In early dirigibles, the lifting gas used was <a href="/wiki/Hydrogen_gas" class="mw-redirect" title="Hydrogen gas">hydrogen</a>, due to its high lifting capacity and ready availability, but the inherent <a href="/wiki/Flammability" class="mw-redirect" title="Flammability">flammability</a> led to several fatal accidents that rendered hydrogen airships obsolete. The alternative lifting gas, <a href="/wiki/Helium" title="Helium">helium</a> gas is not flammable, but is rare and relatively expensive. Significant amounts were first discovered in the <a href="/wiki/United_States" title="United States">United States</a> and for a while helium was only available for airship usage in <a href="/wiki/North_America" title="North America">North America</a>.<a href="#cite_note-2">[2]</a> Most airships built since the 1960s have used helium, though some have used <a href="/wiki/Thermal_airship" title="Thermal airship">hot air</a>.<a href="#cite_note-3">[a]</a> The envelope of an airship may form the gasbag, or it may contain a number of gas-filled cells. An airship also has engines, crew, and optionally also payload accommodation, typically housed in one or more gondolas suspended below the envelope. The main types of airship are <a href="/wiki/Non-rigid_airship" class="mw-redirect" title="Non-rigid airship">non-rigid</a>, <a href="/wiki/Semi-rigid_airship" title="Semi-rigid airship">semi-rigid</a> and <a href="/wiki/Rigid_airship" title="Rigid airship">rigid airships</a>.<a href="#cite_note-ege-4">[3]</a> Non-rigid airships, often called "blimps", rely solely on internal gas pressure to maintain the envelope shape. Semi-rigid airships maintain their shape by internal pressure, but have some form of supporting structure, such as a fixed keel, attached to it. Rigid airships have an outer structural framework that maintains the shape and carries all structural loads, while the lifting gas is contained in one or more internal gasbags or cells.<a href="#cite_note-5">[4]</a> Rigid airships were first flown by Count <a href="/wiki/Ferdinand_von_Zeppelin" title="Ferdinand von Zeppelin">Ferdinand von Zeppelin</a> and the vast majority of rigid airships built were manufactured by the firm he founded, <a href="/wiki/Luftschiffbau_Zeppelin" title="Luftschiffbau Zeppelin">Luftschiffbau Zeppelin</a>. As a result, rigid airships are often called <a href="/wiki/Zeppelin" title="Zeppelin">zeppelins</a>.<a href="#cite_note-6">[5]</a> Airships were the first aircraft capable of controlled powered flight, and were most commonly used before the 1940s; their use decreased as their capabilities were surpassed by those of aeroplanes. Their decline was accelerated by a series of high-profile accidents, including the 1930 crash and burning of the British <a href="/wiki/R101" title="R101">R101</a> in France, the 1933 and 1935 storm-related crashes of the twin <a href="/wiki/Airborne_aircraft_carrier" title="Airborne aircraft carrier">airborne aircraft carrier</a> U.S. Navy helium-filled rigids, the <a href="/wiki/USS_Akron" title="USS Akron">USS Akron</a> and <a href="/wiki/USS_Macon_(ZRS-5)" title="USS Macon (ZRS-5)">USS Macon</a> respectively, and the 1937 burning of the German <a href="/wiki/Hydrogen" title="Hydrogen">hydrogen</a>-filled <a href="/wiki/LZ_129_Hindenburg" title="LZ 129 Hindenburg">Hindenburg</a>. From the 1960s, helium airships have been used where the ability to hover for a long time outweighs the need for speed and manoeuvrability, such as advertising, tourism, camera platforms, geological surveys and <a href="/wiki/Observation_aircraft" class="mw-redirect" title="Observation aircraft">aerial observation</a>. <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Terminology">Terminology</h2>[<a href="/w/index.php?title=Airship&action=edit&section=1" title="Edit section: Terminology">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Ballon_poisson_de_9019s368w_0_ng451j60n.tiff" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Ballon_poisson_de_9019s368w_0_ng451j60n.tiff/lossy-page1-220px-Ballon_poisson_de_9019s368w_0_ng451j60n.tiff.jpg" decoding="async" width="220" height="144" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Ballon_poisson_de_9019s368w_0_ng451j60n.tiff/lossy-page1-330px-Ballon_poisson_de_9019s368w_0_ng451j60n.tiff.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Ballon_poisson_de_9019s368w_0_ng451j60n.tiff/lossy-page1-440px-Ballon_poisson_de_9019s368w_0_ng451j60n.tiff.jpg 2x" data-file-width="3684" data-file-height="2404" /></a><figcaption>Ballon-Poisson, a navigable balloon designed by aeronaut Ferdinand Lagleize, c. 1850</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Airship">Airship</h3>[<a href="/w/index.php?title=Airship&action=edit&section=2" title="Edit section: Airship">edit</a>]</div> During the pioneer years of aeronautics, terms such as "airship", "air-ship", "air ship" and "ship of the air" meant any kind of navigable or dirigible flying machine.<a href="#cite_note-7">[6]</a><a href="#cite_note-8">[7]</a><a href="#cite_note-9">[8]</a><a href="#cite_note-10">[9]</a><a href="#cite_note-11">[10]</a><a href="#cite_note-12">[11]</a> In 1919 <a href="/wiki/Frederick_Handley_Page" title="Frederick Handley Page">Frederick Handley Page</a> was reported as referring to "ships of the air", with smaller passenger types as "air yachts".<a href="#cite_note-13">[12]</a> In the 1930s, large intercontinental flying boats were also sometimes referred to as "ships of the air" or "flying-ships".<a href="#cite_note-14">[13]</a><a href="#cite_note-15">[14]</a> Nowadays the term "airship" is used only for powered, dirigible balloons, with sub-types being classified as rigid, semi-rigid or non-rigid.<a href="#cite_note-ege-4">[3]</a> Semi-rigid architecture is the more recent, following advances in deformable structures and the exigency of reducing weight and volume of the airships. They have a minimal structure that keeps the shape jointly with overpressure of the gas envelope.<a href="#cite_note-16">[15]</a><a href="#cite_note-17">[16]</a> <div class="mw-heading mw-heading3"><h3 id="Aerostat">Aerostat</h3>[<a href="/w/index.php?title=Airship&action=edit&section=3" title="Edit section: Aerostat">edit</a>]</div> An <a href="/wiki/Aerostat" title="Aerostat">aerostat</a> is an <a href="/wiki/Aircraft" title="Aircraft">aircraft</a> that remains aloft using buoyancy or static lift, as opposed to the <a href="/wiki/Aircraft" title="Aircraft">aerodyne</a>, which obtains lift by moving through the air. Airships are a type of aerostat.<a href="#cite_note-ege-4">[3]</a> The term aerostat has also been used to indicate a tethered or <a href="/wiki/Moored_balloon" class="mw-redirect" title="Moored balloon">moored balloon</a> as opposed to a free-floating balloon.<a href="#cite_note-18">[17]</a> Aerostats today are capable of lifting a payload of 3,000 pounds (1,400 kg) to an altitude of more than 4.5 kilometres (2.8 mi) above sea level.<a href="#cite_note-:0-19">[18]</a> They can also stay in the air for extended periods of time, particularly when powered by an on-board generator or if the tether contains electrical conductors.<a href="#cite_note-:0-19">[18]</a> Due to this capability, aerostats can be used as platforms for telecommunication services. For instance, Platform Wireless International Corporation announced in 2001 that it would use a tethered 1,250 pounds (570 kg) airborne payload to deliver cellular phone service to a 140 miles (230 km) region in Brazil.<a href="#cite_note-20">[19]</a><a href="#cite_note-21">[20]</a> The <a href="/wiki/European_Union" title="European Union">European Union</a>'s ABSOLUTE project was also reportedly exploring the use of tethered aerostat stations to provide telecommunications during disaster response.<a href="#cite_note-22">[21]</a> <div class="mw-heading mw-heading3"><h3 id="Blimp">Blimp</h3>[<a href="/w/index.php?title=Airship&action=edit&section=4" title="Edit section: Blimp">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Blimp" title="Blimp">Blimp</a></div> A blimp is a non-rigid aerostat.<a href="#cite_note-23">[22]</a> In British usage it refers to any non-rigid aerostat, including <a href="/wiki/Barrage_balloon" title="Barrage balloon">barrage balloons</a> and other <a href="/wiki/Kite_balloon" title="Kite balloon">kite balloons</a>, having a streamlined shape and stabilising tail fins.<a href="#cite_note-24">[23]</a> Some blimps may be powered dirigibles, as in early versions of the <a href="/wiki/Goodyear_Blimp" title="Goodyear Blimp">Goodyear Blimp</a>. Later Goodyear dirigibles, though technically semi-rigid airships, have still been called "blimps" by the company.<a href="#cite_note-piece-25">[24]</a> <div class="mw-heading mw-heading3"><h3 id="Zeppelin">Zeppelin</h3>[<a href="/w/index.php?title=Airship&action=edit&section=5" title="Edit section: Zeppelin">edit</a>]</div> The term zeppelin originally referred to airships manufactured by the German <a href="/wiki/Luftschiffbau_Zeppelin" title="Luftschiffbau Zeppelin">Zeppelin Company</a>, which built and operated the first rigid airships in the early years of the twentieth century. The initials LZ, for Luftschiff Zeppelin (German for "Zeppelin airship"), usually prefixed their craft's serial identifiers. Streamlined rigid (or semi-rigid)<a href="#cite_note-26">[25]</a> airships are often referred to as "Zeppelins", because of the fame that this company acquired due to the number of airships it produced,<a href="#cite_note-27">[26]</a><a href="#cite_note-28">[27]</a> although its early rival was the <a href="/wiki/List_of_Parseval_airships" title="List of Parseval airships">Parseval</a> semi-rigid design. <div class="mw-heading mw-heading3"><h3 id="Hybrid_airship">Hybrid airship</h3>[<a href="/w/index.php?title=Airship&action=edit&section=6" title="Edit section: Hybrid airship">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Hybrid_airship" title="Hybrid airship">Hybrid airship</a></div> Hybrid airships fly with a positive aerostatic contribution, usually equal to the empty weight of the system, and the variable payload is sustained by propulsion or aerodynamic contribution.<a href="#cite_note-29">[28]</a><a href="#cite_note-30">[29]</a> <div class="mw-heading mw-heading2"><h2 id="Classification">Classification</h2>[<a href="/w/index.php?title=Airship&action=edit&section=7" title="Edit section: Classification">edit</a>]</div> Airships are classified according to their method of construction into rigid, semi-rigid and non-rigid types.<a href="#cite_note-ege-4">[3]</a> <div class="mw-heading mw-heading3"><h3 id="Rigid">Rigid</h3>[<a href="/w/index.php?title=Airship&action=edit&section=8" title="Edit section: Rigid">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Rigid_airship" title="Rigid airship">Rigid airship</a></div> A rigid airship has a rigid framework covered by an outer skin or envelope. The interior contains one or more gasbags, cells or balloons to provide lift. Rigid airships are typically unpressurised and can be made to virtually any size. Most, but not all, of the German <a href="/wiki/Zeppelin" title="Zeppelin">Zeppelin</a> airships have been of this type. <div class="mw-heading mw-heading3"><h3 id="Semi-rigid">Semi-rigid</h3>[<a href="/w/index.php?title=Airship&action=edit&section=9" title="Edit section: Semi-rigid">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Semi-rigid_airship" title="Semi-rigid airship">Semi-rigid airship</a></div> A semi-rigid airship has some kind of supporting structure but the main envelope is held in shape by the internal pressure of the lifting gas. Typically the airship has an extended, usually articulated keel running along the bottom of the envelope to stop it kinking in the middle by distributing suspension loads into the envelope, while also allowing lower envelope pressures. <div class="mw-heading mw-heading3"><h3 id="Non-rigid">Non-rigid</h3>[<a href="/w/index.php?title=Airship&action=edit&section=10" title="Edit section: Non-rigid">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Blimp" title="Blimp">Blimp</a></div> Non-rigid airships are often called "blimps". Most, but not all, of the American <a href="/wiki/Goodyear_blimp" class="mw-redirect" title="Goodyear blimp">Goodyear airships</a> have been blimps. A non-rigid airship relies entirely on internal gas pressure to retain its shape during flight. Unlike the rigid design, the non-rigid airship's gas envelope has no compartments. However, it still typically has smaller internal bags containing air (<a href="/wiki/Ballonet" title="Ballonet">ballonets</a>). As altitude is increased, the lifting gas expands and air from the ballonets is expelled through valves to maintain the hull's shape. To return to sea level, the process is reversed: air is forced back into the ballonets by scooping air from the engine exhaust and using auxiliary blowers. <div class="mw-heading mw-heading2"><h2 id="Construction">Construction</h2>[<a href="/w/index.php?title=Airship&action=edit&section=11" title="Edit section: Construction">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Usn-airships_(cropped).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/36/Usn-airships_%28cropped%29.jpg/220px-Usn-airships_%28cropped%29.jpg" decoding="async" width="220" height="76" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/36/Usn-airships_%28cropped%29.jpg/330px-Usn-airships_%28cropped%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/36/Usn-airships_%28cropped%29.jpg/440px-Usn-airships_%28cropped%29.jpg 2x" data-file-width="708" data-file-height="246" /></a><figcaption>U.S. Navy airships and balloons, 1931: in the background, ZR-3, in front of it, (l to r) J-3 or 4, K-1, ZMC-2, in front of them, "Caquot" observation balloon, and in foreground free balloons used for training</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Envelope">Envelope</h3>[<a href="/w/index.php?title=Airship&action=edit&section=12" title="Edit section: Envelope">edit</a>]</div> The envelope itself is the structure, including textiles that contain the buoyant gas. Internally two ballonets are generally placed in the front part and in the rear part of the hull and contains air.<a href="#cite_note-31">[30]</a> The problem of the exact determination of the pressure on an airship envelope is still problematic and has fascinated major scientists such as <a href="/wiki/Theodor_Von_Karman" class="mw-redirect" title="Theodor Von Karman">Theodor Von Karman</a>.<a href="#cite_note-32">[31]</a> A few <a href="/wiki/Metal-clad_airship" title="Metal-clad airship">airships have been metal-clad</a>, with rigid and nonrigid examples made. Each kind used a thin gastight metal envelope, rather than the usual rubber-coated fabric envelope. Only four metal-clad ships are known to have been built, and only two actually flew: <a href="/wiki/David_Schwarz_(aviation_inventor)" title="David Schwarz (aviation inventor)">Schwarz</a>'s first aluminum rigid airship of 1893 collapsed,<a href="#cite_note-Dooley-33">[32]</a> while his second flew;<a href="#cite_note-34">[33]</a> the nonrigid <a href="/wiki/ZMC-2" class="mw-redirect" title="ZMC-2">ZMC-2</a> built for the U.S. Navy flew from 1929 to 1941 when it was scrapped as too small for operational use on anti-submarine patrols;<a href="#cite_note-35">[34]</a> while the 1929 nonrigid Slate Aircraft Corporation City of Glendale collapsed on its first flight attempt.<a href="#cite_note-36">[35]</a><a href="#cite_note-37">[36]</a> <div class="mw-heading mw-heading3"><h3 id="Ballonet">Ballonet</h3>[<a href="/w/index.php?title=Airship&action=edit&section=13" title="Edit section: Ballonet">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Ballonet" title="Ballonet">Ballonet</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Ballonet_analogue.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/Ballonet_analogue.jpg/170px-Ballonet_analogue.jpg" decoding="async" width="170" height="187" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/Ballonet_analogue.jpg/255px-Ballonet_analogue.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/02/Ballonet_analogue.jpg/340px-Ballonet_analogue.jpg 2x" data-file-width="2352" data-file-height="2583" /></a><figcaption>The air-filled red balloon acts as a simple ballonet inside the outer balloon, which is filled with lifting gas.</figcaption></figure> A <a href="/wiki/Ballonet" title="Ballonet">ballonet</a> is an air bag inside the outer <a href="/wiki/Aerostat" title="Aerostat">envelope</a> of an airship which, when inflated, reduces the volume available for the lifting gas, making it more dense. Because air is also denser than the lifting gas, inflating the ballonet reduces the overall lift, while deflating it increases lift. In this way, the ballonet can be used to adjust the lift as required by controlling the buoyancy. By inflating or deflating ballonets strategically, the pilot can control the airship's altitude and attitude. Ballonets may typically be used in <a href="/wiki/Non-rigid_airship" class="mw-redirect" title="Non-rigid airship">non-rigid</a> or <a href="/wiki/Semi-rigid_airship" title="Semi-rigid airship">semi-rigid</a> airships, commonly with multiple ballonets located both <a href="/wiki/Bow_(ship)" class="mw-redirect" title="Bow (ship)">fore</a> and <a href="/wiki/Stern" title="Stern">aft</a> to maintain balance and to control the <a href="/wiki/Flight_dynamics_(aircraft)" class="mw-redirect" title="Flight dynamics (aircraft)">pitch</a> of the airship. <div class="mw-heading mw-heading3"><h3 id="Lifting_gas">Lifting gas</h3>[<a href="/w/index.php?title=Airship&action=edit&section=14" title="Edit section: Lifting gas">edit</a>]</div> <a href="/wiki/Lifting_gas" title="Lifting gas">Lifting gas</a> is generally hydrogen, helium or hot air. Hydrogen gives the highest lift 1.1 kg/m3 (0.069 lb/cu ft) and is inexpensive and easily obtained, but is highly flammable and can detonate if mixed with air. Helium is completely non flammable, but gives lower performance-1.02 kg/m3 (0.064 lb/cu ft) and is a rare element and much more expensive.<a href="#cite_note-38">[37]</a> <a href="/wiki/Thermal_airship" title="Thermal airship">Thermal airships</a> use a heated lifting gas, usually air, in a fashion similar to <a href="/wiki/Hot_air_balloon" title="Hot air balloon">hot air balloons</a>. The first to do so was flown in 1973 by the British company <a href="/wiki/Cameron_Balloons" title="Cameron Balloons">Cameron Balloons</a>.<a href="#cite_note-39">[38]</a> <div class="mw-heading mw-heading3"><h3 id="Gondola">Gondola</h3>[<a href="/w/index.php?title=Airship&action=edit&section=15" title="Edit section: Gondola">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Modern_airship_gondola.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Modern_airship_gondola.jpg/220px-Modern_airship_gondola.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Modern_airship_gondola.jpg/330px-Modern_airship_gondola.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Modern_airship_gondola.jpg/440px-Modern_airship_gondola.jpg 2x" data-file-width="788" data-file-height="525" /></a><figcaption>A gondola fitted with twin propellers</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Propulsion_and_control">Propulsion and control</h3>[<a href="/w/index.php?title=Airship&action=edit&section=16" title="Edit section: Propulsion and control">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Update plainlinks metadata ambox ambox-content ambox-Update" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Ambox_current_red_Americas.svg/42px-Ambox_current_red_Americas.svg.png" decoding="async" width="42" height="34" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Ambox_current_red_Americas.svg/63px-Ambox_current_red_Americas.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/53/Ambox_current_red_Americas.svg/84px-Ambox_current_red_Americas.svg.png 2x" data-file-width="360" data-file-height="290" /></div></td><td class="mbox-text"><div class="mbox-text-span">This section needs to be updated. Please help update this article to reflect recent events or newly available information. (December 2019)</div></td></tr></tbody></table> Small airships carry their engine(s) in their gondola. Where there were multiple engines on larger airships, these were placed in separate nacelles, termed power cars or engine cars.<a href="#cite_note-Brew,_1998-40">[39]</a> To allow asymmetric thrust to be applied for maneuvering, these power cars were mounted towards the sides of the envelope, away from the centre line gondola. This also raised them above the ground, reducing the risk of a propeller strike when landing. Widely spaced power cars were also termed wing cars, from the use of "wing" to mean being on the side of something, as in a theater, rather than the <a href="/wiki/Wing" title="Wing">aerodynamic device</a>.<a href="#cite_note-Brew,_1998-40">[39]</a> These engine cars carried a crew during flight who maintained the engines as needed, but who also worked the engine controls, throttle etc., mounted directly on the engine. Instructions were relayed to them from the pilot's station by a <a href="/wiki/Engine_order_telegraph" title="Engine order telegraph">telegraph system</a>, as on a ship.<a href="#cite_note-Brew,_1998-40">[39]</a> If fuel is burnt for propulsion, then progressive reduction in the airship's overall weight occurs. In hydrogen airships, this is usually dealt with by simply venting cheap hydrogen lifting gas. In helium airships water is often condensed from the exhaust and stored as ballast.<a href="#cite_note-41">[40]</a> <div class="mw-heading mw-heading3"><h3 id="Fins_and_rudders">Fins and rudders</h3>[<a href="/w/index.php?title=Airship&action=edit&section=17" title="Edit section: Fins and rudders">edit</a>]</div> To control the airship's direction and stability, it is equipped with fins and rudders. Fins are typically located on the tail section and provide stability and resistance to rolling. Rudders are movable surfaces on the tail that allow the pilot to steer the airship left or right. <div class="mw-heading mw-heading3"><h3 id="Empennage">Empennage</h3>[<a href="/w/index.php?title=Airship&action=edit&section=18" title="Edit section: Empennage">edit</a>]</div> The <a href="/wiki/Empennage" title="Empennage">empennage</a> refers to the tail section of the airship, which includes the fins, rudders, and other aerodynamic surfaces. It plays a crucial role in maintaining stability and controlling the airship's attitude. <div class="mw-heading mw-heading3"><h3 id="Fuel_and_power_systems">Fuel and power systems</h3>[<a href="/w/index.php?title=Airship&action=edit&section=19" title="Edit section: Fuel and power systems">edit</a>]</div> Airships require a source of power to operate their propulsion systems. This includes engines, generators, or batteries, depending on the type of airship and its design. Fuel tanks or batteries are typically located within the envelope or gondola. <div class="mw-heading mw-heading3"><h3 id="Navigation_and_communication_equipment">Navigation and communication equipment</h3>[<a href="/w/index.php?title=Airship&action=edit&section=20" title="Edit section: Navigation and communication equipment">edit</a>]</div> To navigate safely and communicate with ground control or other aircraft, airships are equipped with a range of instruments, including GPS systems, radios, radar, and navigation lights. <div class="mw-heading mw-heading3"><h3 id="Landing_gear">Landing gear</h3>[<a href="/w/index.php?title=Airship&action=edit&section=21" title="Edit section: Landing gear">edit</a>]</div> Some airships have landing gear that allows them to land on runways or other surfaces. This landing gear may include wheels, skids, or landing pads. <div class="mw-heading mw-heading2"><h2 id="Performance">Performance</h2>[<a href="/w/index.php?title=Airship&action=edit&section=22" title="Edit section: Performance">edit</a>]</div> <div class="mw-heading mw-heading3"><h3 id="Efficiency">Efficiency</h3>[<a href="/w/index.php?title=Airship&action=edit&section=23" title="Edit section: Efficiency">edit</a>]</div> The main advantage of airships with respect to any other vehicle is that they require less energy to remain in flight, compared to other air vehicles.<a href="#cite_note-42">[41]</a><a href="#cite_note-43">[42]</a> The proposed <a href="/w/index.php?title=Varialift&action=edit&redlink=1" class="new" title="Varialift (page does not exist)">Varialift</a> airship, powered by a mixture of solar-powered engines and conventional jet engines, would use only an estimated 8 percent of the fuel required by <a href="/wiki/Jet_aircraft" title="Jet aircraft">jet aircraft</a>.<a href="#cite_note-44">[43]</a><a href="#cite_note-45">[44]</a> Furthermore, utilizing the <a href="/wiki/Jet_stream" title="Jet stream">jet stream</a> could allow for a faster and more energy-efficient cargo transport alternative to <a href="/wiki/Maritime_transport" title="Maritime transport">maritime shipping</a>.<a href="#cite_note-46">[45]</a> This is one of the reasons why <a href="/wiki/China" title="China">China</a> has embraced their use recently.<a href="#cite_note-47">[46]</a> <div class="mw-heading mw-heading2"><h2 id="History">History</h2>[<a href="/w/index.php?title=Airship&action=edit&section=24" title="Edit section: History">edit</a>]</div> <div class="mw-heading mw-heading3"><h3 id="Early_pioneers">Early pioneers</h3>[<a href="/w/index.php?title=Airship&action=edit&section=25" title="Edit section: Early pioneers">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Flying_boat.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Flying_boat.png/220px-Flying_boat.png" decoding="async" width="220" height="330" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Flying_boat.png/330px-Flying_boat.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/52/Flying_boat.png/440px-Flying_boat.png 2x" data-file-width="512" data-file-height="768" /></a><figcaption>Francesco Lana de Terzi's Aerial Ship design of 1670</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:BlanchardChannelFlight.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/BlanchardChannelFlight.jpg/220px-BlanchardChannelFlight.jpg" decoding="async" width="220" height="143" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/BlanchardChannelFlight.jpg/330px-BlanchardChannelFlight.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/56/BlanchardChannelFlight.jpg/440px-BlanchardChannelFlight.jpg 2x" data-file-width="1600" data-file-height="1041" /></a><figcaption>Crossing of the <a href="/wiki/English_Channel" title="English Channel">English Channel</a> by Blanchard in 1785</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Seven_Views_of_the_Atmotic_Ship_-_page_3.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Seven_Views_of_the_Atmotic_Ship_-_page_3.jpg/220px-Seven_Views_of_the_Atmotic_Ship_-_page_3.jpg" decoding="async" width="220" height="145" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Seven_Views_of_the_Atmotic_Ship_-_page_3.jpg/330px-Seven_Views_of_the_Atmotic_Ship_-_page_3.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Seven_Views_of_the_Atmotic_Ship_-_page_3.jpg/440px-Seven_Views_of_the_Atmotic_Ship_-_page_3.jpg 2x" data-file-width="3500" data-file-height="2309" /></a><figcaption>Bland's 1851 Atmotic Ship design p. 3</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:GiffardAirship.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/GiffardAirship.JPG/220px-GiffardAirship.JPG" decoding="async" width="220" height="130" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/GiffardAirship.JPG/330px-GiffardAirship.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/97/GiffardAirship.JPG/440px-GiffardAirship.JPG 2x" data-file-width="1312" data-file-height="777" /></a><figcaption>A model of the 1852 <a href="/wiki/Giffard_dirigible" title="Giffard dirigible">Giffard airship</a> at the <a href="/wiki/London_Science_Museum" class="mw-redirect" title="London Science Museum">London Science Museum</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:DupuyLomeDirigeable.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/DupuyLomeDirigeable.jpg/220px-DupuyLomeDirigeable.jpg" decoding="async" width="220" height="154" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/DupuyLomeDirigeable.jpg/330px-DupuyLomeDirigeable.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4f/DupuyLomeDirigeable.jpg/440px-DupuyLomeDirigeable.jpg 2x" data-file-width="669" data-file-height="468" /></a><figcaption>The navigable balloon developed by <a href="/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme">Henri Dupuy de Lôme</a> in 1872</figcaption></figure> <div class="mw-heading mw-heading4"><h4 id="17th–18th_century">17th–18th century</h4>[<a href="/w/index.php?title=Airship&action=edit&section=26" title="Edit section: 17th–18th century">edit</a>]</div> In 1670, the <a href="/wiki/Jesuit" class="mw-redirect" title="Jesuit">Jesuit</a> Father <a href="/wiki/Francesco_Lana_de_Terzi" title="Francesco Lana de Terzi">Francesco Lana de Terzi</a>, sometimes referred to as the "Father of <a href="/wiki/Aeronautics" title="Aeronautics">Aeronautics</a>",<a href="#cite_note-48">[47]</a> published a description of an "Aerial Ship" supported by four copper spheres from which the air was evacuated. Although the basic principle is sound, such a craft was unrealizable then and remains so to the present day, since external air pressure would cause the spheres to collapse unless their thickness was such as to make them too heavy to be buoyant.<a href="#cite_note-49">[48]</a> A hypothetical craft constructed using this principle is known as a <a href="/wiki/Vacuum_airship" title="Vacuum airship">vacuum airship</a>. In 1709, the Brazilian-Portuguese Jesuit priest <a href="/wiki/Bartolomeu_de_Gusm%C3%A3o" title="Bartolomeu de Gusmão">Bartolomeu de Gusmão</a> made a hot air balloon, the Passarola, ascend to the skies, before an astonished Portuguese court. It would have been on August 8, 1709, when Father Bartolomeu de Gusmão held, in the courtyard of the <a href="/wiki/Casa_da_%C3%8Dndia" title="Casa da Índia">Casa da Índia</a>, in the city of Lisbon, the first Passarola demonstration.<a href="#cite_note-50">[49]</a><a href="#cite_note-51">[50]</a> The balloon caught fire without leaving the ground, but, in a second demonstration, it rose to 95 meters in height. It was a small balloon of thick brown paper, filled with hot air, produced by the "fire of material contained in a clay bowl embedded in the base of a waxed wooden tray". The event was witnessed by King <a href="/wiki/John_V_of_Portugal" title="John V of Portugal">John V of Portugal</a> and the future <a href="/wiki/Pope_Innocent_XIII" title="Pope Innocent XIII">Pope Innocent XIII</a>.<a href="#cite_note-Sousa_2014-52">[51]</a> A more practical dirigible airship was described by Lieutenant <a href="/wiki/Jean_Baptiste_Marie_Meusnier" class="mw-redirect" title="Jean Baptiste Marie Meusnier">Jean Baptiste Marie Meusnier</a> in a paper entitled "Mémoire sur l'équilibre des machines aérostatiques" (Memorandum on the equilibrium of aerostatic machines) presented to the <a href="/wiki/French_Academy" class="mw-redirect" title="French Academy">French Academy</a> on 3 December 1783. The 16 water-color drawings published the following year depict a 260-foot-long (79 m) streamlined envelope with internal ballonets that could be used for regulating lift: this was attached to a long carriage that could be used as a boat if the vehicle was forced to land in water. The airship was designed to be driven by three propellers and steered with a sail-like aft rudder. In 1784, <a href="/wiki/Jean-Pierre_Blanchard" title="Jean-Pierre Blanchard">Jean-Pierre Blanchard</a> fitted a hand-powered propeller to a balloon, the first recorded means of propulsion carried aloft. In 1785, he crossed the <a href="/wiki/English_Channel" title="English Channel">English Channel</a> in a balloon equipped with flapping wings for propulsion and a birdlike tail for steering.<a href="#cite_note-53">[52]</a> <div class="mw-heading mw-heading4"><h4 id="19th_century">19th century</h4>[<a href="/w/index.php?title=Airship&action=edit&section=27" title="Edit section: 19th century">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1849_ad_for_Rufus_Porter%27s_New-York-to-California_transport.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/1849_ad_for_Rufus_Porter%27s_New-York-to-California_transport.jpg/220px-1849_ad_for_Rufus_Porter%27s_New-York-to-California_transport.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/1849_ad_for_Rufus_Porter%27s_New-York-to-California_transport.jpg/330px-1849_ad_for_Rufus_Porter%27s_New-York-to-California_transport.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f7/1849_ad_for_Rufus_Porter%27s_New-York-to-California_transport.jpg/440px-1849_ad_for_Rufus_Porter%27s_New-York-to-California_transport.jpg 2x" data-file-width="504" data-file-height="283" /></a><figcaption>1849 Rufus Porter design</figcaption></figure> The <a href="/wiki/Timeline_of_aviation_%E2%80%93_19th_century" class="mw-redirect" title="Timeline of aviation – 19th century">19th century</a> saw continued attempts to add methods of propulsion to balloons. <a href="/wiki/Rufus_Porter_(painter)" title="Rufus Porter (painter)">Rufus Porter</a> built and flew scale models of his "Aerial Locomotive", but never a successful full-size implementation.<a href="#cite_note-54">[53]</a> The Australian <a href="/wiki/William_Bland" title="William Bland">William Bland</a> sent designs for his "<a href="/wiki/Atmotic_airship" class="mw-redirect" title="Atmotic airship">Atmotic airship</a>" to the <a href="/wiki/The_Great_Exhibition" class="mw-redirect" title="The Great Exhibition">Great Exhibition</a> held in London in 1851, where a model was displayed. This was an elongated balloon with a steam engine driving twin propellers suspended underneath. The lift of the balloon was estimated as 5 tons and the car with the fuel as weighing 3.5 tons, giving a payload of 1.5 tons.<a href="#cite_note-55">[54]</a><a href="#cite_note-56">[55]</a> Bland believed that the machine could be driven at 80 km/h (50 mph) and could fly from Sydney to London in less than a week. In 1852, <a href="/wiki/Henri_Giffard" title="Henri Giffard">Henri Giffard</a> became the first person to make an engine-powered flight when he flew 27 km (17 mi) in a <a href="/wiki/Giffard_dirigible" title="Giffard dirigible">steam-powered airship</a>.<a href="#cite_note-57">[56]</a> Airships would develop considerably over the next two decades. In 1863, <a href="/wiki/Solomon_Andrews_(inventor)" title="Solomon Andrews (inventor)">Solomon Andrews</a> flew his aereon design, an unpowered, controllable dirigible in Perth Amboy, New Jersey and offered the device to the U.S. Military during the Civil War.<a href="#cite_note-58">[57]</a> He flew a later design in 1866 around New York City and as far as Oyster Bay, New York. This concept used changes in lift to provide propulsive force, and did not need a powerplant. In 1872, the French naval architect <a href="/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme">Dupuy de Lome</a> launched a large navigable balloon, which was driven by a large propeller turned by eight men.<a href="#cite_note-59">[58]</a> It was developed during the <a href="/wiki/Franco-Prussian_war" class="mw-redirect" title="Franco-Prussian war">Franco-Prussian war</a> and was intended as an improvement to the balloons used for communications between Paris and the countryside during the <a href="/wiki/Siege_of_Paris_(1870%E2%80%931871)" title="Siege of Paris (1870–1871)">siege of Paris</a>, but was completed only after the end of the war. In 1872, <a href="/wiki/Paul_Haenlein" title="Paul Haenlein">Paul Haenlein</a> flew an airship with an internal combustion engine running on the coal gas used to inflate the envelope, the first use of such an engine to power an aircraft.<a href="#cite_note-60">[59]</a><a href="#cite_note-Mattos-61">[60]</a> <a href="/wiki/Charles_F._Ritchel" title="Charles F. Ritchel">Charles F. Ritchel</a> made a public demonstration flight in 1878 of his hand-powered one-man rigid airship, and went on to build and sell five of his aircraft.<a href="#cite_note-Mattos-61">[60]</a> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Dyer_Airship_Patent_Drawing_Page_1.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Dyer_Airship_Patent_Drawing_Page_1.png/220px-Dyer_Airship_Patent_Drawing_Page_1.png" decoding="async" width="220" height="323" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Dyer_Airship_Patent_Drawing_Page_1.png/330px-Dyer_Airship_Patent_Drawing_Page_1.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/60/Dyer_Airship_Patent_Drawing_Page_1.png/440px-Dyer_Airship_Patent_Drawing_Page_1.png 2x" data-file-width="2320" data-file-height="3408" /></a><figcaption>Dyer Airship 1874 patent drawing page 1</figcaption></figure> In 1874, <a href="/w/index.php?title=Micajah_Clark_Dyer&action=edit&redlink=1" class="new" title="Micajah Clark Dyer (page does not exist)">Micajah Clark Dyer</a> filed U.S. Patent 154,654 "Apparatus for Navigating the Air".<a href="#cite_note-62">[61]</a><a href="#cite_note-63">[62]</a><a href="#cite_note-64">[63]</a> It is believed successful trial flights were made between 1872 and 1874, but detailed dates are not available.<a href="#cite_note-65">[64]</a> The apparatus used a combination of wings and paddle wheels for navigation and propulsion. <style data-mw-deduplicate="TemplateStyles:r1244412712">.mw-parser-output .templatequote{overflow:hidden;margin:1em 0;padding:0 32px}.mw-parser-output .templatequotecite{line-height:1.5em;text-align:left;margin-top:0}@media(min-width:500px){.mw-parser-output .templatequotecite{padding-left:1.6em}}</style><blockquote class="templatequote">In operating the machinery the wings receive an upward and downward motion, in the manner of the wings of a bird, the outer ends yielding as they are raised, but opening out and then remaining rigid while being depressed. The wings, if desired, may be set at an angle so as to propel forward as well as to raise the machine in the air. The paddle-wheels are intended to be used for propelling the machine, in the same way that a vessel is propelled in water. An instrument answering to a rudder is attached for guiding the machine. A balloon is to be used for elevating the flying ship, after which it is to be guided and controlled at the pleasure of its occupants.<a href="#cite_note-66">[65]</a></blockquote> More details can be found in the book about his life.<a href="#cite_note-67">[66]</a> In 1883, the first electric-powered flight was made by <a href="/wiki/Gaston_Tissandier" title="Gaston Tissandier">Gaston Tissandier</a>, who fitted a 1.5 hp (1.1 kW) <a href="/wiki/Siemens_AG" class="mw-redirect" title="Siemens AG">Siemens</a> electric motor to an airship. The first fully controllable free flight was made in 1884 by <a href="/wiki/Charles_Renard" title="Charles Renard">Charles Renard</a> and <a href="/wiki/Arthur_Constantin_Krebs" title="Arthur Constantin Krebs">Arthur Constantin Krebs</a> in the <a href="/wiki/French_Army" title="French Army">French Army</a> airship <a href="/wiki/La_France_(airship)" title="La France (airship)">La France</a>. La France made the first flight of an airship that landed where it took off; the 170 ft (52 m) long, 66,000 cu ft (1,900 m3) airship covered 8 km (5.0 mi) in 23 minutes with the aid of an 8.5 hp (6.3 kW) electric motor,<a href="#cite_note-68">[67]</a> and a 435 kg (959 lb) battery. It made seven flights in 1884 and 1885.<a href="#cite_note-Mattos-61">[60]</a> In 1888, the design of the Campbell Air Ship, designed by Professor Peter C. Campbell, was built by the Novelty Air Ship Company. It was lost at sea in 1889 while being flown by Professor Hogan during an exhibition flight.<a href="#cite_note-69">[68]</a> From 1888 to 1897, <a href="/wiki/Friedrich_Hermann_W%C3%B6lfert" title="Friedrich Hermann Wölfert">Friedrich Wölfert</a> built three airships powered by <a href="/wiki/Daimler_Motoren_Gesellschaft" title="Daimler Motoren Gesellschaft">Daimler Motoren Gesellschaft</a>-built petrol engines, the last of which, <a href="/wiki/Deutschland_(1896_airship)" title="Deutschland (1896 airship)">Deutschland</a>, caught fire in flight and killed both occupants in 1897.<a href="#cite_note-70">[69]</a> The 1888 version used a 2 hp (1.5 kW) single cylinder Daimler engine and flew 10 km (6 mi) from <a href="/wiki/Canstatt" class="mw-redirect" title="Canstatt">Canstatt</a> to <a href="/wiki/Kornwestheim" title="Kornwestheim">Kornwestheim</a>.<a href="#cite_note-71">[70]</a><a href="#cite_note-72">[71]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Santos-Dumont_flight_around_the_Eiffel_Tower.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Santos-Dumont_flight_around_the_Eiffel_Tower.jpg/170px-Santos-Dumont_flight_around_the_Eiffel_Tower.jpg" decoding="async" width="170" height="242" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Santos-Dumont_flight_around_the_Eiffel_Tower.jpg/255px-Santos-Dumont_flight_around_the_Eiffel_Tower.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Santos-Dumont_flight_around_the_Eiffel_Tower.jpg/340px-Santos-Dumont_flight_around_the_Eiffel_Tower.jpg 2x" data-file-width="1802" data-file-height="2569" /></a><figcaption><a href="/wiki/Santos-Dumont_number_6" title="Santos-Dumont number 6">Santos-Dumont No. 6</a> rounding the <a href="/wiki/Eiffel_Tower" title="Eiffel Tower">Eiffel Tower</a> in 1901</figcaption></figure> In 1897, an airship with an aluminum envelope was built by the <a href="/wiki/Hungarian_people" class="mw-redirect" title="Hungarian people">Hungarian</a>-<a href="/wiki/Croatian_people" class="mw-redirect" title="Croatian people">Croatian</a> engineer <a href="/wiki/David_Schwarz_(aviation_inventor)" title="David Schwarz (aviation inventor)">David Schwarz</a>. It made its first flight at <a href="/wiki/Tempelhof_International_Airport" class="mw-redirect" title="Tempelhof International Airport">Tempelhof field</a> in Berlin after Schwarz had died. His widow, Melanie Schwarz, was paid 15,000 marks by Count <a href="/wiki/Ferdinand_von_Zeppelin" title="Ferdinand von Zeppelin">Ferdinand von Zeppelin</a> to release the industrialist <a href="/wiki/Carl_Berg_(airship_builder)" title="Carl Berg (airship builder)">Carl Berg</a> from his exclusive contract to supply Schwartz with <a href="/wiki/Aluminium" title="Aluminium">aluminium</a>.<a href="#cite_note-73">[72]</a> From 1897 to 1899, Konstantin Danilewsky, medical doctor and inventor from <a href="/wiki/Kharkiv" title="Kharkiv">Kharkiv</a> (now <a href="/wiki/Ukraine" title="Ukraine">Ukraine</a>, then <a href="/wiki/Russian_Empire" title="Russian Empire">Russian Empire</a>), built four muscle-powered airships, of gas volume 150–180 m3 (5,300–6,400 cu ft). About 200 ascents were made within a framework of experimental flight program, at two locations, with no significant incidents.<a href="#cite_note-74">[73]</a><a href="#cite_note-75">[74]</a> <div class="mw-heading mw-heading3"><h3 id="Early_20th_century">Early 20th century</h3>[<a href="/w/index.php?title=Airship&action=edit&section=28" title="Edit section: Early 20th century">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:First_Zeppelin_ascent.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/First_Zeppelin_ascent.jpg/220px-First_Zeppelin_ascent.jpg" decoding="async" width="220" height="144" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/First_Zeppelin_ascent.jpg/330px-First_Zeppelin_ascent.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c6/First_Zeppelin_ascent.jpg/440px-First_Zeppelin_ascent.jpg 2x" data-file-width="905" data-file-height="591" /></a><figcaption>LZ1, Count Zeppelin's first airship</figcaption></figure> In July 1900, the Luftschiff <a href="/wiki/Zeppelin_LZ1" class="mw-redirect" title="Zeppelin LZ1">Zeppelin LZ1</a> made its first flight. This led to the most successful airships of all time: the Zeppelins, named after <a href="/wiki/Ferdinand_von_Zeppelin" title="Ferdinand von Zeppelin">Count Ferdinand von Zeppelin</a> who began working on rigid airship designs in the 1890s, leading to the flawed LZ1 in 1900 and the more successful <a href="/wiki/Zeppelin_LZ2" class="mw-redirect" title="Zeppelin LZ2">LZ2</a> in 1906. The Zeppelin airships had a framework composed of triangular lattice girders covered with fabric that contained separate gas cells. At first multiplane tail surfaces were used for control and stability: later designs had simpler <a href="/wiki/Cruciform_tail" title="Cruciform tail">cruciform tail</a> surfaces. The engines and crew were accommodated in "gondolas" hung beneath the hull driving propellers attached to the sides of the frame by means of long drive shafts. Additionally, there was a passenger compartment (later a <a href="/wiki/Bomb_bay" title="Bomb bay">bomb bay</a>) located halfway between the two engine compartments. <a href="/wiki/Alberto_Santos-Dumont" title="Alberto Santos-Dumont">Alberto Santos-Dumont</a> was a wealthy young <a href="/wiki/Brazil" title="Brazil">Brazilian</a> who lived in France and had a passion for flying. He designed 18 balloons and dirigibles before turning his attention to fixed-winged aircraft.<a href="#cite_note-76">[75]</a> On 19 October 1901 he flew his airship <a href="/wiki/Santos-Dumont_number_6" title="Santos-Dumont number 6">Number 6</a>, from the <a href="/wiki/Parc_Saint_Cloud" class="mw-redirect" title="Parc Saint Cloud">Parc Saint Cloud</a> to and around the <a href="/wiki/Eiffel_Tower" title="Eiffel Tower">Eiffel Tower</a> and back in under thirty minutes.<a href="#cite_note-77">[76]</a> This feat earned him the <a href="/wiki/Henri_Deutsch_de_la_Meurthe" title="Henri Deutsch de la Meurthe">Deutsch de la Meurthe</a> prize of 100,000 <a href="/wiki/Franc" title="Franc">francs</a>. Many inventors were inspired by Santos-Dumont's small airships. Many airship pioneers, such as the American <a href="/wiki/Thomas_Scott_Baldwin" title="Thomas Scott Baldwin">Thomas Scott Baldwin</a>, financed their activities through passenger flights and public demonstration flights. <a href="/wiki/Stanley_Spencer_(aeronaut)" title="Stanley Spencer (aeronaut)">Stanley Spencer</a> built the first British airship with funds from advertising baby food on the sides of the envelope.<a href="#cite_note-Christchurch_Star-78">[77]</a> Others, such as <a href="/wiki/Walter_Wellman" title="Walter Wellman">Walter Wellman</a> and <a href="/wiki/Melvin_Vaniman" title="Melvin Vaniman">Melvin Vaniman</a>, set their sights on loftier goals, attempting two polar flights in 1907 and 1909, and two trans-Atlantic flights in 1910 and 1912.<a href="#cite_note-79">[78]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:1911_AstraTorres_airshipNo1_crop.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/1911_AstraTorres_airshipNo1_crop.jpg/220px-1911_AstraTorres_airshipNo1_crop.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/1911_AstraTorres_airshipNo1_crop.jpg/330px-1911_AstraTorres_airshipNo1_crop.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/52/1911_AstraTorres_airshipNo1_crop.jpg/440px-1911_AstraTorres_airshipNo1_crop.jpg 2x" data-file-width="500" data-file-height="333" /></a><figcaption><a href="/wiki/Astra-Torres_airship" title="Astra-Torres airship">Astra-Torres airship</a> No.1 at an air show in 1911</figcaption></figure> In 1902 the Spanish engineer <a href="/wiki/Leonardo_Torres_Quevedo" title="Leonardo Torres Quevedo">Leonardo Torres Quevedo</a> published details of an innovative airship design in Spain and France titled "Perfectionnements aux aerostats dirigibles" ("Improvements in dirigible aerostats").<a href="#cite_note-80">[79]</a><a href="#cite_note-Redondo2008-81">[80]</a> With a non-rigid body and internal bracing wires, it overcame the flaws of these types of aircraft as regards both rigid structure (zeppelin type) and flexibility, providing the airships with more stability during flight, and the capability of using heavier engines and a greater passenger load. A system called "auto-rigid". In 1905, helped by Captain A. Kindelán, he built the airship "Torres Quevedo" at the <a href="/wiki/Guadalajara,_Castile-La_Mancha" class="mw-redirect" title="Guadalajara, Castile-La Mancha">Guadalajara</a> military base.<a href="#cite_note-82">[81]</a> In 1909 he patented an improved design that he offered to the French <a href="/wiki/Soci%C3%A9t%C3%A9_Astra" title="Société Astra">Astra</a> company, who started mass-producing it in 1911 as the <a href="/wiki/Astra-Torres_airship" title="Astra-Torres airship">Astra-Torres airship</a>.<a href="#cite_note-Talbot-83">[82]</a> This type of envelope was employed in the United Kingdom in the <a href="/wiki/Coastal_class_airship" title="Coastal class airship">Coastal</a>, <a href="/wiki/C_Star_class_airship" title="C Star class airship">C Star</a>, and <a href="/wiki/NS_class_airship" title="NS class airship">North Sea</a> airships.<a href="#cite_note-Whale-84">[83]</a> The distinctive three-lobed design was widely used during the Great War by the Entente powers for diverse tasks, principally convoy protection and anti-submarine warfare. The success during the war even drew the attention of the <a href="/wiki/Imperial_Japanese_Navy" title="Imperial Japanese Navy">Imperial Japanese Navy</a>, who acquired a model in 1922.<a href="#cite_note-85">[84]</a> Torres also drew up designs of a 'docking station' and made alterations to airship designs, to find a resolution to the slew of problems faced by airship engineers to dock dirigibles. In 1910, he proposed the idea of attaching an airships nose to a <a href="/wiki/Mooring_mast" title="Mooring mast">mooring mast</a> and allowing the airship to weathervane with changes of wind direction. The use of a metal column erected on the ground, the top of which the bow or stem would be directly attached to (by a cable) would allow a dirigible to be moored at any time, in the open, regardless of wind speeds. Additionally, Torres' design called for the improvement and accessibility of temporary landing sites, where airships were to be moored for the purpose of disembarkation of passengers. The final patent was presented in February 1911 in Belgium, and later to France and the United Kingdom in 1912, under the title "Improvements in Mooring Arrengements for Airships".<a href="#cite_note-86">[85]</a><a href="#cite_note-87">[86]</a><a href="#cite_note-88">[87]</a> Other airship builders were also active before the war: from 1902 the French company <a href="/wiki/Lebaudy_Fr%C3%A8res" title="Lebaudy Frères">Lebaudy Frères</a> specialized in semirigid airships such as the <a href="/wiki/Lebaudy_Patrie" class="mw-redirect" title="Lebaudy Patrie">Patrie</a> and the <a href="/wiki/Lebaudy_R%C3%A9publique" class="mw-redirect" title="Lebaudy République">République</a>, designed by their engineer Henri Julliot, who later worked for the American company <a href="/wiki/Goodrich_Corporation" title="Goodrich Corporation">Goodrich</a>; the German firm <a href="/wiki/Sch%C3%BCtte-Lanz" class="mw-redirect" title="Schütte-Lanz">Schütte-Lanz</a> built the wooden-framed SL series from 1911, introducing important technical innovations; another German firm <a href="/wiki/Luft-Fahrzeug-Gesellschaft" title="Luft-Fahrzeug-Gesellschaft">Luft-Fahrzeug-Gesellschaft</a> built the <a href="/wiki/August_von_Parseval" title="August von Parseval">Parseval</a>-Luftschiff (PL) series from 1909,<a href="#cite_note-LuegerLuftschiff-89">[88]</a> and Italian <a href="/wiki/Enrico_Forlanini" title="Enrico Forlanini">Enrico Forlanini</a>'s firm had built and flown the first two <a href="/wiki/Forlanini_airships" class="mw-redirect" title="Forlanini airships">Forlanini airships</a>.<a href="#cite_note-Lig-90">[89]</a> On May 12, 1902, the inventor and <a href="/wiki/Brazil" title="Brazil">Brazilian</a> aeronaut <a href="/wiki/Augusto_Severo_de_Albuquerque_Maranhao" class="mw-redirect" title="Augusto Severo de Albuquerque Maranhao">Augusto Severo de Albuquerque Maranhao</a> and his French mechanic, Georges Saché, died when they were flying over <a href="/wiki/Paris" title="Paris">Paris</a> in the airship called Pax. A marble plaque at number 81 of the Avenue du Maine in Paris, commemorates the location of Augusto Severo accident.<a href="#cite_note-severodeath-91">[90]</a><a href="#cite_note-severo-92">[91]</a> <a href="/wiki/The_Catastrophe_of_the_Balloon_%22Le_Pax%22" title="The Catastrophe of the Balloon "Le Pax"">The Catastrophe of the Balloon "Le Pax"</a> is a 1902 short silent film recreation of the catastrophe, directed by <a href="/wiki/Georges_M%C3%A9li%C3%A8s" title="Georges Méliès">Georges Méliès</a>. In Britain, the Army built their first dirigible, the <a href="/wiki/British_Army_Dirigible_No_1" title="British Army Dirigible No 1">Nulli Secundus</a>, in 1907. The Navy ordered the construction of an experimental rigid in 1908. Officially known as <a href="/wiki/HMA_No._1" title="HMA No. 1">His Majesty's Airship No. 1</a> and nicknamed the Mayfly, it broke its back in 1911 before making a single flight. Work on a successor did not start until 1913. German airship passenger service known as <a href="/wiki/DELAG" title="DELAG">DELAG</a> (Deutsche-Luftschiffahrts AG) was established in 1910. In 1910 <a href="/wiki/Walter_Wellman" title="Walter Wellman">Walter Wellman</a> unsuccessfully attempted an aerial crossing of the <a href="/wiki/Atlantic_Ocean" title="Atlantic Ocean">Atlantic Ocean</a> in the airship <a href="/wiki/America_(airship)" title="America (airship)">America</a>. <div class="mw-heading mw-heading3"><h3 id="World_War_I">World War I</h3>[<a href="/w/index.php?title=Airship&action=edit&section=29" title="Edit section: World War I">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/German_strategic_bombing_during_World_War_I" class="mw-redirect" title="German strategic bombing during World War I">German strategic bombing during World War I</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Dirigeable_militaire_ital_z603qz55s_0_5m60qs94p.tiff" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Dirigeable_militaire_ital_z603qz55s_0_5m60qs94p.tiff/lossy-page1-220px-Dirigeable_militaire_ital_z603qz55s_0_5m60qs94p.tiff.jpg" decoding="async" width="220" height="145" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Dirigeable_militaire_ital_z603qz55s_0_5m60qs94p.tiff/lossy-page1-330px-Dirigeable_militaire_ital_z603qz55s_0_5m60qs94p.tiff.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Dirigeable_militaire_ital_z603qz55s_0_5m60qs94p.tiff/lossy-page1-440px-Dirigeable_militaire_ital_z603qz55s_0_5m60qs94p.tiff.jpg 2x" data-file-width="3684" data-file-height="2420" /></a><figcaption>Italian military airship, 1908</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:German_airship_bombing_Warsaw.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/German_airship_bombing_Warsaw.JPG/220px-German_airship_bombing_Warsaw.JPG" decoding="async" width="220" height="138" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/German_airship_bombing_Warsaw.JPG/330px-German_airship_bombing_Warsaw.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/81/German_airship_bombing_Warsaw.JPG/440px-German_airship_bombing_Warsaw.JPG 2x" data-file-width="1600" data-file-height="1000" /></a><figcaption>German airship <a href="/wiki/List_of_Sch%C3%BCtte-Lanz_airships#SL2" title="List of Schütte-Lanz airships">Schütte Lanz SL2</a> <a href="/wiki/Aerial_bombing_of_cities" title="Aerial bombing of cities">bombing</a> <a href="/wiki/Warsaw" title="Warsaw">Warsaw</a> in 1914</figcaption></figure> The prospect of airships as bombers had been recognized in Europe well before the airships were up to the task. <a href="/wiki/H._G._Wells" title="H. G. Wells">H. G. Wells</a>' <a href="/wiki/The_War_in_the_Air" title="The War in the Air">The War in the Air</a> (1908) described the obliteration of entire fleets and cities by airship attack. The Italian forces became the first to use dirigibles for a military purpose during the <a href="/wiki/Italo%E2%80%93Turkish_War" class="mw-redirect" title="Italo–Turkish War">Italo–Turkish War</a>, the first bombing mission being flown on 10 March 1912.<a href="#cite_note-93">[92]</a> <a href="/wiki/World_War_I" title="World War I">World War I</a> marked the airship's real debut as a weapon. The Germans, French, and Italians all used airships for scouting and tactical bombing roles early in the war, and all learned that the airship was too vulnerable for operations over the front. The decision to end operations in direct support of armies was made by all in 1917.<a href="#cite_note-94">[93]</a><a href="#cite_note-95">[94]</a> Many in the German military believed they had found the ideal weapon with which to counteract British naval superiority and strike at Britain itself, while more realistic airship advocates believed the zeppelin's value was as a long range scout/attack craft for naval operations. Raids on England began in January 1915 and peaked in 1916: following losses to the British defenses only a few raids were made in 1917–18, the last in August 1918.<a href="#cite_note-96">[95]</a> Zeppelins proved to be terrifying but inaccurate weapons. Navigation, target selection and bomb-aiming proved to be difficult under the best of conditions, and the cloud cover that was frequently encountered by the airships reduced accuracy even further. The physical damage done by airships over the course of the war was insignificant, and the deaths that they caused amounted to a few hundred.<a href="#cite_note-97">[96]</a> Nevertheless, the raid caused a significant diversion of British resources to defense efforts. The airships were initially immune to attack by aircraft and anti-aircraft guns: as the pressure in their envelopes was only just higher than ambient air, holes had little effect. But following the introduction of a combination of <a href="/wiki/Incendiary_ammunition" title="Incendiary ammunition">incendiary</a> and <a href="/wiki/High-explosive_incendiary" title="High-explosive incendiary">explosive</a> ammunition in 1916, their flammable hydrogen lifting gas made them vulnerable to the defending aeroplanes. Several were shot down in flames by British defenders, and many others destroyed in accidents. New designs capable of reaching greater altitude were developed, but although this made them immune from attack it made their bombing accuracy even worse. Countermeasures by the British included sound detection equipment, searchlights and anti-aircraft artillery, followed by night fighters in 1915. One tactic used early in the war, when their limited range meant the airships had to fly from forward bases and the only zeppelin production facilities were in <a href="/wiki/Friedrichshafen" title="Friedrichshafen">Friedrichshafen</a>, was the bombing of airship sheds by the British <a href="/wiki/Royal_Naval_Air_Service" title="Royal Naval Air Service">Royal Naval Air Service</a>. Later in the war, the development of the <a href="/wiki/Aircraft_carrier" title="Aircraft carrier">aircraft carrier</a> led to the first successful carrier-based air strike in history: on the morning of 19 July 1918, seven <a href="/wiki/Sopwith_Camel" title="Sopwith Camel">Sopwith 2F.1 Camels</a> were launched from <a href="/wiki/HMS_Furious_(47)" title="HMS Furious (47)">HMS Furious</a> and <a href="/wiki/Tondern_raid" title="Tondern raid">struck the airship base at Tønder</a>, destroying zeppelins L 54 and L 60.<a href="#cite_note-98">[97]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:1918_view_from_French_dirigible.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a7/1918_view_from_French_dirigible.jpg/220px-1918_view_from_French_dirigible.jpg" decoding="async" width="220" height="126" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a7/1918_view_from_French_dirigible.jpg/330px-1918_view_from_French_dirigible.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a7/1918_view_from_French_dirigible.jpg/440px-1918_view_from_French_dirigible.jpg 2x" data-file-width="878" data-file-height="501" /></a><figcaption>View from a French dirigible approaching a ship in 1918</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Zeppelin_wreck_23_sept_1916.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Zeppelin_wreck_23_sept_1916.JPG/220px-Zeppelin_wreck_23_sept_1916.JPG" decoding="async" width="220" height="125" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Zeppelin_wreck_23_sept_1916.JPG/330px-Zeppelin_wreck_23_sept_1916.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Zeppelin_wreck_23_sept_1916.JPG/440px-Zeppelin_wreck_23_sept_1916.JPG 2x" data-file-width="516" data-file-height="293" /></a><figcaption>Wreckage of Zeppelin <a href="/wiki/Zeppelin_LZ_72" title="Zeppelin LZ 72">L31</a> or <a href="/wiki/Zeppelin_LZ_74" title="Zeppelin LZ 74">L32</a> shot down over England, 23 September 1916</figcaption></figure> The British Army had abandoned airship development in favour of aeroplanes before the start of the war, but the Royal Navy had recognized the need for small airships to counteract the submarine and mine threat in coastal waters.<a href="#cite_note-99">[98]</a> Beginning in February 1915, they began to develop the <a href="/wiki/SS_class_blimp" class="mw-redirect" title="SS class blimp">SS</a> (Sea Scout) class of blimp. These had a small envelope of 1,699–1,982 m3 (60,000–70,000 cu ft) and at first used aircraft <a href="/wiki/Fuselage" title="Fuselage">fuselages</a> without the wing and tail surfaces as control cars. Later, more advanced blimps with purpose-built gondolas were used. The <a href="/wiki/NS_class_blimp" class="mw-redirect" title="NS class blimp">NS class</a> (North Sea) were the largest and most effective non-rigid airships in British service, with a gas capacity of 10,200 m3 (360,000 cu ft), a crew of 10 and an endurance of 24 hours. Six 230 lb (100 kg) bombs were carried, as well as three to five machine guns. British blimps were used for scouting, mine clearance, and <a href="/wiki/Convoy" title="Convoy">convoy</a> patrol duties. During the war, the British operated over 200 non-rigid airships.<a href="#cite_note-100">[99]</a> Several were sold to Russia, France, the United States, and Italy. The large number of trained crews, low attrition rate and constant experimentation in handling techniques meant that at the war's end Britain was the world leader in non-rigid airship technology. The Royal Navy continued development of rigid airships until the end of the war. Eight rigid airships had been completed by the armistice, (<a href="/wiki/No._9r" title="No. 9r">No. 9r</a>, four <a href="/wiki/23_class_airship" class="mw-redirect" title="23 class airship">23 Class</a>, two <a href="/wiki/R23X_class_airship" class="mw-redirect" title="R23X class airship">R23X Class</a> and one <a href="/wiki/R31_class_airship" class="mw-redirect" title="R31 class airship">R31 Class</a>), although several more were in an advanced state of completion by the war's end.<a href="#cite_note-101">[100]</a> Both France and Italy continued to use airships throughout the war. France preferred the non-rigid type, whereas Italy flew 49 semi-rigid airships in both the scouting and bombing roles.<a href="#cite_note-102">[101]</a> Aeroplanes had almost entirely replaced airships as bombers by the end of the war, and Germany's remaining zeppelins were destroyed by their crews, scrapped or handed over to the Allied powers as war reparations. The British rigid airship program, which had mainly been a reaction to the potential threat of the German airships, was wound down. <div class="mw-heading mw-heading3"><h3 id="The_interwar_period">The interwar period</h3>[<a href="/w/index.php?title=Airship&action=edit&section=30" title="Edit section: The interwar period">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Airship_Bodensee,_Oct._1919.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Airship_Bodensee%2C_Oct._1919.jpg/220px-Airship_Bodensee%2C_Oct._1919.jpg" decoding="async" width="220" height="131" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Airship_Bodensee%2C_Oct._1919.jpg/330px-Airship_Bodensee%2C_Oct._1919.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Airship_Bodensee%2C_Oct._1919.jpg/440px-Airship_Bodensee%2C_Oct._1919.jpg 2x" data-file-width="4921" data-file-height="2927" /></a><figcaption>The <a href="/wiki/Zeppelin_LZ_120_Bodensee" title="Zeppelin LZ 120 Bodensee">Bodensee</a> 1919</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:LZ121_Nordstern.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/LZ121_Nordstern.jpg/220px-LZ121_Nordstern.jpg" decoding="async" width="220" height="138" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/LZ121_Nordstern.jpg/330px-LZ121_Nordstern.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/2/2e/LZ121_Nordstern.jpg 2x" data-file-width="367" data-file-height="230" /></a><figcaption>The <a href="/wiki/Zeppelin_LZ_121_Nordstern" title="Zeppelin LZ 121 Nordstern">Nordstern</a> 1920</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Norge_airship_in_flight_1926.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Norge_airship_in_flight_1926.jpg/220px-Norge_airship_in_flight_1926.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Norge_airship_in_flight_1926.jpg/330px-Norge_airship_in_flight_1926.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Norge_airship_in_flight_1926.jpg/440px-Norge_airship_in_flight_1926.jpg 2x" data-file-width="5239" data-file-height="3508" /></a><figcaption><a href="/wiki/Norge_(airship)" title="Norge (airship)">Norge</a> airship in flight 1926</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:R-38-rescue.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/R-38-rescue.jpg/220px-R-38-rescue.jpg" decoding="async" width="220" height="181" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/R-38-rescue.jpg/330px-R-38-rescue.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/56/R-38-rescue.jpg/440px-R-38-rescue.jpg 2x" data-file-width="740" data-file-height="610" /></a><figcaption>Rescuers scramble across the wreckage of British <a href="/wiki/R38_(ZR-2)" class="mw-redirect" title="R38 (ZR-2)">R-38/USN ZR-2</a>, 24 August 1921.</figcaption></figure> Britain, the United States and Germany built rigid airships between the two world wars. Italy and France made limited use of Zeppelins handed over as war reparations. Italy, the Soviet Union, the United States and Japan mainly operated semi-rigid airships. Under the terms of the <a href="/wiki/Treaty_of_Versailles" title="Treaty of Versailles">Treaty of Versailles</a>, Germany was not allowed to build airships of greater capacity than a million cubic feet. Two small passenger airships, <a href="/wiki/Zeppelin_LZ_120_Bodensee" title="Zeppelin LZ 120 Bodensee">LZ 120 Bodensee</a> and its sister ship LZ 121 Nordstern, were built immediately after the war but were confiscated following the sabotage of the wartime Zeppelins that were to have been handed over as war reparations: Bodensee was given to Italy and Nordstern to France. On May 12, 1926, the Italian built semi-rigid airship <a href="/wiki/Norge_(airship)" title="Norge (airship)">Norge</a> was the first aircraft to fly over the <a href="/wiki/North_Pole" title="North Pole">North Pole</a>. The British <a href="/wiki/R33_class_airship" class="mw-redirect" title="R33 class airship">R33</a> and <a href="/wiki/R34_(airship)" class="mw-redirect" title="R34 (airship)">R34</a> were near-identical copies of the German L 33, which had come down almost intact in Yorkshire on 24 September 1916.<a href="#cite_note-103">[102]</a> Despite being almost three years out of date by the time they were launched in 1919, they became two of the most successful airships in British service. The creation of the <a href="/wiki/Royal_Air_Force" title="Royal Air Force">Royal Air Force</a> (RAF) in early 1918 created a hybrid British airship program. The RAF was not interested in airships while the <a href="/wiki/British_Admiralty" class="mw-redirect" title="British Admiralty">Admiralty</a> was, so a deal was made where the Admiralty would design any future military airships and the RAF would handle manpower, facilities and operations.<a href="#cite_note-Higham_176-104">[103]</a> On 2 July 1919, R34 began the first double crossing of the <a href="/wiki/Atlantic_Ocean" title="Atlantic Ocean">Atlantic</a> by an aircraft. It landed at <a href="/wiki/Mineola,_Long_Island" class="mw-redirect" title="Mineola, Long Island">Mineola, Long Island</a> on 6 July after 108 hours in the air; the return crossing began on 8 July and took 75 hours. This feat failed to generate enthusiasm for continued airship development, and the British airship program was rapidly wound down. During World War I, the U.S. Navy acquired its first airship, the DH-1,<a href="#cite_note-105">[104]</a> but it was destroyed while being inflated shortly after delivery to the Navy. After the war, the U.S. Navy contracted to buy the <a href="/wiki/ZR-2" class="mw-redirect" title="ZR-2">R 38</a>, which was being built in Britain, but before it was handed over it was destroyed because of a structural failure during a test flight.<a href="#cite_note-106">[105]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:USS_Shenandoah_Bau.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/USS_Shenandoah_Bau.jpg/220px-USS_Shenandoah_Bau.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/USS_Shenandoah_Bau.jpg/330px-USS_Shenandoah_Bau.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/USS_Shenandoah_Bau.jpg/440px-USS_Shenandoah_Bau.jpg 2x" data-file-width="740" data-file-height="494" /></a><figcaption><a href="/wiki/USS_Shenandoah_(ZR-1)" title="USS Shenandoah (ZR-1)">USS Shenandoah (ZR-1)</a> during construction, 1923</figcaption></figure> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:ZR3_USS_Los_Angeles_an_Kriegsschiff.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/ZR3_USS_Los_Angeles_an_Kriegsschiff.jpg/220px-ZR3_USS_Los_Angeles_an_Kriegsschiff.jpg" decoding="async" width="220" height="157" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/ZR3_USS_Los_Angeles_an_Kriegsschiff.jpg/330px-ZR3_USS_Los_Angeles_an_Kriegsschiff.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/75/ZR3_USS_Los_Angeles_an_Kriegsschiff.jpg/440px-ZR3_USS_Los_Angeles_an_Kriegsschiff.jpg 2x" data-file-width="5700" data-file-height="4066" /></a><figcaption><a href="/wiki/USS_Los_Angeles_(ZR-3)" title="USS Los Angeles (ZR-3)">USS Los Angeles (ZR-3)</a> beside tender <a href="/wiki/USS_Patoka" title="USS Patoka">USS Patoka</a> February 1931</figcaption></figure> America then started constructing the <a href="/wiki/USS_Shenandoah_(ZR-1)" title="USS Shenandoah (ZR-1)">USS Shenandoah</a>, designed by the <a href="/wiki/Bureau_of_Aeronautics" title="Bureau of Aeronautics">Bureau of Aeronautics</a> and based on the <a href="/wiki/List_of_Zeppelins#LZ_96" title="List of Zeppelins">Zeppelin L 49</a>.<a href="#cite_note-107">[106]</a> Assembled in <a href="/wiki/Hangar_No._1,_Lakehurst_Naval_Air_Station" class="mw-redirect" title="Hangar No. 1, Lakehurst Naval Air Station">Hangar No. 1</a> and first flown on 4 September 1923<a href="#cite_note-Hnavy-108">[107]</a> at <a href="/wiki/Lakehurst,_New_Jersey" title="Lakehurst, New Jersey">Lakehurst</a>, <a href="/wiki/New_Jersey" title="New Jersey">New Jersey</a>, it was the first airship to be inflated with the <a href="/wiki/Noble_gas" title="Noble gas">noble gas</a> <a href="/wiki/Helium" title="Helium">helium</a>, which was then so scarce that the Shenandoah contained most of the world's supply. A second airship, <a href="/wiki/USS_Los_Angeles_(ZR-3)" title="USS Los Angeles (ZR-3)">USS Los Angeles</a>, was built by the Zeppelin company as compensation for the airships that should have been handed over as war reparations according to the terms of the Versailles Treaty but had been sabotaged by their crews. This construction order saved the Zeppelin works from the threat of closure. The success of the Los Angeles, which was flown successfully for eight years, encouraged the U.S. Navy to invest in its own, larger airships. When the Los Angeles was delivered, the two airships had to share the limited supply of helium, and thus alternated operating and overhauls.<a href="#cite_note-109">[108]</a> In 1922, <a href="/wiki/Charles_Dennistoun_Burney" class="mw-redirect" title="Charles Dennistoun Burney">Sir Dennistoun Burney</a> suggested a plan for a subsidised air service throughout the <a href="/wiki/British_Empire" title="British Empire">British Empire</a> using airships (the Burney Scheme).<a href="#cite_note-Higham_176-104">[103]</a> Following the coming to power of <a href="/wiki/Ramsay_MacDonald" title="Ramsay MacDonald">Ramsay MacDonald</a>'s <a href="/wiki/Labour_Party_(UK)" title="Labour Party (UK)">Labour</a> government in 1924, the scheme was transformed into the <a href="/wiki/Imperial_Airship_Scheme" title="Imperial Airship Scheme">Imperial Airship Scheme</a>, under which two airships were built, one by a private company and the other by the <a href="/wiki/Royal_Airship_Works" class="mw-redirect" title="Royal Airship Works">Royal Airship Works</a> under Air Ministry control. The two designs were radically different. The "capitalist" ship, the <a href="/wiki/R100" title="R100">R100</a>, was more conventional, while the "socialist" ship, the <a href="/wiki/R101" title="R101">R101</a>, had many innovative design features. Construction of both took longer than expected, and the airships did not fly until 1929. Neither airship was capable of the service intended, though the R100 did complete a proving flight to Canada and back in 1930.<a href="#cite_note-110">[109]</a> On 5 October 1930, the R101, which had not been thoroughly tested after major modifications, crashed on its maiden voyage to India at Beauvais in France killing 48 of the 54 people aboard. Among the dead were the craft's chief designer and the Secretary of State for Air. The disaster ended British interest in airships. In 1925 the Zeppelin company started construction of the <a href="/wiki/LZ_127_Graf_Zeppelin" title="LZ 127 Graf Zeppelin">Graf Zeppelin (LZ 127)</a>, the largest airship that could be built in the company's existing shed, and intended to stimulate interest in passenger airships. The Graf Zeppelin burned <a href="/wiki/Blau_gas" title="Blau gas">blau gas</a>, similar to <a href="/wiki/Propane" title="Propane">propane</a>, stored in large gas bags below the hydrogen cells, as fuel. Since its density was similar to that of air, it avoided the weight change as fuel was used, and thus the need to <a href="/wiki/Valve" title="Valve">valve</a> hydrogen. The Graf Zeppelin had an impressive safety record, flying over 1,600,000 km (990,000 mi) (including the first circumnavigation of the globe by airship) without a single passenger injury.<a href="#cite_note-111">[110]</a> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:NH43901-enhanced.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/NH43901-enhanced.jpg/220px-NH43901-enhanced.jpg" decoding="async" width="220" height="171" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/NH43901-enhanced.jpg/330px-NH43901-enhanced.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4f/NH43901-enhanced.jpg/440px-NH43901-enhanced.jpg 2x" data-file-width="5650" data-file-height="4384" /></a><figcaption>USS Macon over <a href="/wiki/Lower_Manhattan" title="Lower Manhattan">Lower Manhattan</a>, 1933</figcaption></figure> The U.S. Navy experimented with the use of airships as <a href="/wiki/Airborne_aircraft_carrier" title="Airborne aircraft carrier">airborne aircraft carriers</a>, developing an idea pioneered by the British. The USS Los Angeles was used for initial experiments, and the <a href="/wiki/USS_Akron" title="USS Akron">USS Akron</a> and <a href="/wiki/USS_Macon_(ZRS-5)" title="USS Macon (ZRS-5)">Macon</a>, the world's largest at the time, were used to test the principle in naval operations. Each carried four <a href="/wiki/F9C_Sparrowhawk" class="mw-redirect" title="F9C Sparrowhawk">F9C Sparrowhawk</a> <a href="/wiki/Fighter_aircraft" title="Fighter aircraft">fighters</a> in its hangar, and could carry a fifth on the trapeze. The idea had mixed results. By the time the Navy started to develop a sound doctrine for using the ZRS-type airships, the last of the two built, USS Macon, had been wrecked. Meanwhile, the seaplane had become more capable, and was considered a better investment.<a href="#cite_note-112">[111]</a> Eventually, the U.S. Navy lost all three U.S.-built rigid airships to accidents. USS Shenandoah flew into a <a href="/wiki/Severe_thunderstorm" class="mw-redirect" title="Severe thunderstorm">severe thunderstorm</a> over <a href="/wiki/Noble_County,_Ohio" title="Noble County, Ohio">Noble County, Ohio</a> while on a poorly planned publicity flight on 3 September 1925. It broke into pieces, killing 14 of its crew. USS Akron was caught in a severe storm and flown into the surface of the sea off the shore of New Jersey on 3 April 1933. It carried no life boats and few life vests, so 73 of its crew of 76 died from drowning or hypothermia. USS Macon was lost after suffering a structural failure offshore near <a href="/wiki/Point_Sur_Lighthouse" title="Point Sur Lighthouse">Point Sur Lighthouse</a> on 12 February 1935. The failure caused a loss of gas, which was made much worse when the aircraft was driven over <a href="/wiki/Pressure_height" class="mw-redirect" title="Pressure height">pressure height</a> causing it to lose too much helium to maintain flight.<a href="#cite_note-113">[112]</a> Only two of its crew of 83 died in the crash thanks to the inclusion of life jackets and inflatable rafts after the Akron disaster. The <a href="/wiki/Empire_State_Building" title="Empire State Building">Empire State Building</a> was completed in 1931 with a dirigible mast, in anticipation of future passenger airship service, but no airship ever used the mast. Various entrepreneurs experimented with commuting and shipping freight via airship.<a href="#cite_note-114">[113]</a> In the 1930s, the German Zeppelins successfully competed with other means of transport. They could carry significantly more passengers than other contemporary aircraft while providing amenities similar to those on ocean liners, such as private cabins, observation decks, and dining rooms. Less importantly, the technology was potentially more energy-efficient than heavier-than-air designs. Zeppelins were also faster than ocean liners. On the other hand, operating airships was quite involved. Often the crew would outnumber passengers, and on the ground large teams were necessary to assist mooring and very large hangars were required at airports. <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Hindenburg_burning.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Hindenburg_burning.jpg/220px-Hindenburg_burning.jpg" decoding="async" width="220" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Hindenburg_burning.jpg/330px-Hindenburg_burning.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/84/Hindenburg_burning.jpg/440px-Hindenburg_burning.jpg 2x" data-file-width="3000" data-file-height="2283" /></a><figcaption>The <a href="/wiki/LZ_129_Hindenburg" title="LZ 129 Hindenburg">Hindenburg</a> catches fire, 6 May 1937</figcaption></figure> By the mid-1930s, only Germany still pursued airship development. The Zeppelin company continued to operate the Graf Zeppelin on passenger service between Frankfurt and <a href="/wiki/Recife" title="Recife">Recife</a> in Brazil, taking 68 hours. Even with the small Graf Zeppelin, the operation was almost profitable.<a href="#cite_note-115">[114]</a> In the mid-1930s, work began on an airship designed specifically to operate a passenger service across the Atlantic.<a href="#cite_note-116">[115]</a> The <a href="/wiki/LZ_129_Hindenburg" title="LZ 129 Hindenburg">Hindenburg (LZ 129)</a> completed a successful 1936 season, carrying passengers between <a href="/wiki/Lakehurst,_New_Jersey" title="Lakehurst, New Jersey">Lakehurst, New Jersey</a> and Germany. The year 1937 started with the most spectacular and widely remembered airship accident. Approaching the Lakehurst <a href="/wiki/Mooring_mast" title="Mooring mast">mooring mast</a> minutes before landing on 6 May 1937, the Hindenburg suddenly burst into flames and crashed to the ground. Of the 97 people aboard, 35 died: 13 passengers, 22 aircrew, along with one American ground-crewman. The disaster happened before a large crowd, was filmed and a <a href="/wiki/Herbert_Morrison_(announcer)" class="mw-redirect" title="Herbert Morrison (announcer)">radio news reporter</a> was recording the arrival. This was a disaster that theater goers could see and hear in <a href="/wiki/Newsreels" class="mw-redirect" title="Newsreels">newsreels</a>. The <a href="/wiki/Hindenburg_disaster" title="Hindenburg disaster">Hindenburg disaster</a> shattered public confidence in airships, and brought a definitive end to their "golden age". The day after the Hindenburg disaster, the Graf Zeppelin landed safely in Germany after its return flight from Brazil. This was the last international passenger airship flight. Hindenburg's identical sister ship, the <a href="/wiki/LZ_130_Graf_Zeppelin" title="LZ 130 Graf Zeppelin">Graf Zeppelin II (LZ 130)</a>, could not carry commercial passengers without helium, which the United States refused to sell to Germany. The Graf Zeppelin made several test flights and conducted some electronic espionage until 1939 when it was grounded due to the beginning of the war. The two Graf Zeppelins were scrapped in April, 1940. Development of airships continued only in the United States, and to a lesser extent, the Soviet Union. The Soviet Union had several semi-rigid and non-rigid airships. The semi-rigid dirigible <a href="/wiki/SSSR-V6_OSOAVIAKhIM" title="SSSR-V6 OSOAVIAKhIM">SSSR-V6 OSOAVIAKhIM</a> was among the largest of these craft, and it set the longest endurance flight at the time of over 130 hours. It crashed into a mountain in 1938, killing 13 of the 19 people on board. While this was a severe blow to the Soviet airship program, they continued to operate non-rigid airships until 1950. <div class="mw-heading mw-heading3"><h3 id="World_War_II">World War II</h3>[<a href="/w/index.php?title=Airship&action=edit&section=31" title="Edit section: World War II">edit</a>]</div> While Germany determined that airships were obsolete for military purposes in the coming war and concentrated on the development of aeroplanes, the United States pursued a program of military airship construction even though it had not developed a clear <a href="/wiki/Military_doctrine" title="Military doctrine">military doctrine</a> for airship use. When the Japanese <a href="/wiki/Attack_on_Pearl_Harbor" title="Attack on Pearl Harbor">attacked Pearl Harbor</a> on 7 December 1941, bringing the United States into <a href="/wiki/World_War_II" title="World War II">World War II</a>, the U.S. Navy had 10 nonrigid airships: <ul><li>4 K-class: K-2, K-3, K-4 and K-5 designed as patrol ships, all built in 1938.</li> <li>3 L-class: L-1, L-2 and L-3 as small training ships, produced in 1938.</li> <li>1 G-class, built in 1936 for training.</li> <li>2 TC-class that were older patrol airships designed for land forces, built in 1933. The U.S. Navy acquired both from the United States Army in 1938.</li></ul> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Goodyear_ZNPK_(K-28)_Puritan_(2834542477).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/Goodyear_ZNPK_%28K-28%29_Puritan_%282834542477%29.jpg/220px-Goodyear_ZNPK_%28K-28%29_Puritan_%282834542477%29.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/Goodyear_ZNPK_%28K-28%29_Puritan_%282834542477%29.jpg/330px-Goodyear_ZNPK_%28K-28%29_Puritan_%282834542477%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/34/Goodyear_ZNPK_%28K-28%29_Puritan_%282834542477%29.jpg/440px-Goodyear_ZNPK_%28K-28%29_Puritan_%282834542477%29.jpg 2x" data-file-width="1280" data-file-height="853" /></a><figcaption>Control car (gondola) of the Goodyear ZNPK (K-28) later operated by Goodyear as Puritan VI</figcaption></figure> Only K- and TC-class airships were suitable for combat and they were quickly pressed into service against Japanese and German <a href="/wiki/Submarine" title="Submarine">submarines</a>, which were then sinking American shipping within visual range of the American coast. U.S. Navy command, remembering airship's anti-submarine success in World War I, immediately requested new modern antisubmarine airships and on 2 January 1942 formed the ZP-12 patrol unit based in <a href="/wiki/Naval_Air_Engineering_Station_Lakehurst" class="mw-redirect" title="Naval Air Engineering Station Lakehurst">Lakehurst</a> from the four K airships. The ZP-32 patrol unit was formed from two TC and two L airships a month later, based at <a href="/wiki/Moffett_Federal_Airfield" title="Moffett Federal Airfield">NAS Moffett Field</a> in <a href="/wiki/Sunnyvale,_California" title="Sunnyvale, California">Sunnyvale, California</a>. An airship training base was created there as well. The status of submarine-hunting Goodyear airships in the early days of <a href="/wiki/World_War_II" title="World War II">World War II</a> has created significant confusion. Although various accounts refer to airships Resolute and Volunteer as operating as "privateers" under a <a href="/wiki/Letter_of_Marque" class="mw-redirect" title="Letter of Marque">Letter of Marque</a>, Congress never authorized a commission, nor did the President sign one.<a href="#cite_note-117">[116]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Mcastustin1.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/62/Mcastustin1.jpg/220px-Mcastustin1.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/62/Mcastustin1.jpg/330px-Mcastustin1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/62/Mcastustin1.jpg/440px-Mcastustin1.jpg 2x" data-file-width="1100" data-file-height="734" /></a><figcaption>A view of six helium-filled blimps being stored in one of the two massive <a href="/wiki/Hangar" title="Hangar">hangars</a> located at <a href="/wiki/Marine_Corps_Air_Station_Tustin" title="Marine Corps Air Station Tustin">NAS Santa Ana</a>, during World War II</figcaption></figure> In the years 1942–44, approximately 1,400 airship pilots and 3,000 support crew members were trained in the military airship crew training program and the airship military personnel grew from 430 to 12,400. The U.S. airships were produced by the <a href="/wiki/Goodyear_Tire_and_Rubber_Company" title="Goodyear Tire and Rubber Company">Goodyear</a> factory in <a href="/wiki/Akron,_Ohio" title="Akron, Ohio">Akron, Ohio</a>. From 1942 till 1945, 154 airships were built for the U.S. Navy (133 K-class, 10 L-class, seven G-class, four M-class) and five L-class for civilian customers (serial numbers L-4 to L-8). The primary airship tasks were patrol and <a href="/wiki/Convoy" title="Convoy">convoy</a> escort near the American coastline. They also served as an organization centre for the convoys to direct ship movements, and were used in naval search and rescue operations. Rarer duties of the airships included aerophoto reconnaissance, naval mine-laying and mine-sweeping, parachute unit transport and deployment, cargo and personnel transportation. They were deemed quite successful in their duties with the highest combat readiness factor in the entire U.S. air force (87%). During the war, some 532 ships without airship escort were sunk near the U.S. coast by enemy submarines. Only one ship, the tanker Persephone, of the 89,000 or so in convoys escorted by blimps was sunk by the enemy.<a href="#cite_note-FOOTNOTEVaeth199220–21-118">[117]</a> Airships engaged submarines with <a href="/wiki/Depth_charge" title="Depth charge">depth charges</a> and, less frequently, with other on-board weapons. They were excellent at driving submarines down, where their limited speed and range prevented them from attacking convoys. The weapons available to airships were so limited that until the advent of the <a href="/wiki/Homing_torpedo" class="mw-redirect" title="Homing torpedo">homing torpedo</a> they had little chance of sinking a submarine.<a href="#cite_note-Vaeth_1992-119">[118]</a> Only one airship was ever destroyed by <a href="/wiki/U-boat" title="U-boat">U-boat</a>: on the night of 18/19 July 1943, the K-74 from ZP-21 division was patrolling the coastline near Florida. Using <a href="/wiki/Radar" title="Radar">radar</a>, the airship located a surfaced German submarine. The K-74 made her attack run but the U-boat opened fire first. K-74's <a href="/wiki/Depth_charge" title="Depth charge">depth charges</a> did not release as she crossed the U-boat and the K-74 received serious damage, losing gas pressure and an engine but landing in the water without loss of life. The crew was rescued by patrol boats in the morning, but one crewman, Aviation Machinist's Mate Second Class Isadore Stessel, died from a <a href="/wiki/Shark" title="Shark">shark</a> attack. The U-boat, <a href="/wiki/German_submarine_U-134_(1941)" title="German submarine U-134 (1941)">submarine U-134</a>, was slightly damaged and the next day or so was attacked by aircraft, sustaining damage that forced it to return to base. It was finally sunk on 24 August 1943 by a British <a href="/wiki/Vickers_Wellington" title="Vickers Wellington">Vickers Wellington</a> near <a href="/wiki/Vigo,_Spain" class="mw-redirect" title="Vigo, Spain">Vigo, Spain</a>.<a href="#cite_note-120">[119]</a><a href="#cite_note-121">[120]</a> Fleet Airship Wing One operated from Lakehurst, New Jersey, Glynco, Georgia, Weeksville, North Carolina, <a href="/wiki/South_Weymouth_NAS" class="mw-redirect" title="South Weymouth NAS">South Weymouth NAS</a> Massachusetts, <a href="/wiki/Brunswick_NAS" class="mw-redirect" title="Brunswick NAS">Brunswick NAS</a> and Bar Harbor Maine, Yarmouth, Nova Scotia, and Argentia, Newfoundland. <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:USN_ZP-14_Blimp_at_RAF_Gibraltar_1944.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/USN_ZP-14_Blimp_at_RAF_Gibraltar_1944.jpg/220px-USN_ZP-14_Blimp_at_RAF_Gibraltar_1944.jpg" decoding="async" width="220" height="209" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/USN_ZP-14_Blimp_at_RAF_Gibraltar_1944.jpg/330px-USN_ZP-14_Blimp_at_RAF_Gibraltar_1944.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7d/USN_ZP-14_Blimp_at_RAF_Gibraltar_1944.jpg/440px-USN_ZP-14_Blimp_at_RAF_Gibraltar_1944.jpg 2x" data-file-width="800" data-file-height="761" /></a><figcaption>K-class blimps of USN Blimp Squadron ZP-14 conducted antisubmarine warfare operations at the Strait of Gibraltar in 1944–45.</figcaption></figure> Some Navy blimps saw action in the European war theater. In 1944–45, the U.S. Navy moved an entire squadron of eight Goodyear <a href="/wiki/K_class_blimp" class="mw-redirect" title="K class blimp">K class blimps</a> (K-89, K-101, K-109, K-112, K-114, K-123, K-130, & K-134) with flight and maintenance crews from <a href="/wiki/Weeksville_Dirigible_Hangar" class="mw-redirect" title="Weeksville Dirigible Hangar">Weeksville Naval Air Station</a> in North Carolina to <a href="/wiki/Naval_Air_Station_Port_Lyautey" title="Naval Air Station Port Lyautey">Naval Air Station Port Lyautey</a>, <a href="/wiki/French_Morocco" class="mw-redirect" title="French Morocco">French Morocco</a>.<a href="#cite_note-122">[121]</a> Their mission was to locate and destroy German U-boats in the relatively shallow waters around the <a href="/wiki/Strait_of_Gibraltar" title="Strait of Gibraltar">Strait of Gibraltar</a> where <a href="/wiki/Magnetic_anomaly_detection" class="mw-redirect" title="Magnetic anomaly detection">magnetic anomaly detection</a> (MAD) was viable. PBY aircraft had been searching these waters but MAD required low altitude flying that was dangerous at night for these aircraft. The blimps were considered a perfect solution to establish a <a href="/wiki/24/7" class="mw-redirect" title="24/7">24/7</a> MAD barrier (fence) at the Straits of Gibraltar with the PBYs flying the day shift and the blimps flying the night shift. The first two blimps (K-123 & K-130) left <a href="/wiki/Naval_Air_Station_South_Weymouth" title="Naval Air Station South Weymouth">South Weymouth NAS</a> on 28 May 1944 and flew to <a href="/wiki/Naval_Station_Argentia" title="Naval Station Argentia">Argentia, Newfoundland</a>, the <a href="/wiki/Lajes_Field" title="Lajes Field">Azores</a>, and finally to <a href="/wiki/Kenitra_Airport" class="mw-redirect" title="Kenitra Airport">Port Lyautey</a> where they completed the first transatlantic crossing by nonrigid airships on 1 June 1944. The blimps of USN Blimp Squadron ZP-14 (Blimpron 14, aka The Africa Squadron) also conducted mine-spotting and mine-sweeping operations in key Mediterranean ports and various escorts including the convoy carrying United States President <a href="/wiki/Franklin_D._Roosevelt" title="Franklin D. Roosevelt">Franklin D. Roosevelt</a> and British Prime Minister <a href="/wiki/Winston_Churchill" title="Winston Churchill">Winston Churchill</a> to the <a href="/wiki/Yalta_Conference" title="Yalta Conference">Yalta Conference</a> in 1945. Airships from the ZP-12 unit took part in the sinking of the last U-boat before German capitulation, sinking the U-881 on 6 May 1945 together with destroyers <a href="/wiki/USS_Atherton" title="USS Atherton">USS Atherton</a> and <a href="/wiki/USS_Moberly_(PF-63)" class="mw-redirect" title="USS Moberly (PF-63)">USS Moberly</a>. Other airships patrolled the <a href="/wiki/Caribbean" title="Caribbean">Caribbean</a>, Fleet Airship Wing Two, Headquartered at <a href="/wiki/Naval_Air_Station_Richmond" title="Naval Air Station Richmond">Naval Air Station Richmond</a>, covered the <a href="/wiki/Gulf_of_Mexico" title="Gulf of Mexico">Gulf of Mexico</a> from Richmond and <a href="/wiki/Key_West,_Florida" class="mw-redirect" title="Key West, Florida">Key West, Florida</a>, <a href="/wiki/Houma,_Louisiana" title="Houma, Louisiana">Houma, Louisiana</a>, as well as <a href="/wiki/Hitchcock,_Texas" title="Hitchcock, Texas">Hitchcock</a> and <a href="/wiki/Brownsville,_Texas" title="Brownsville, Texas">Brownsville, Texas</a>. FAW 2 also patrolled the northern Caribbean from San Julian,[<a href="/wiki/Wikipedia:Please_clarify" title="Wikipedia:Please clarify">clarification needed</a>] the Isle of Pines (now called <a href="/wiki/Isla_de_la_Juventud" title="Isla de la Juventud">Isla de la Juventud</a>) and <a href="/wiki/Guant%C3%A1namo_Bay" title="Guantánamo Bay">Guantánamo Bay</a>, Cuba as well as <a href="/wiki/Vernam_Field" title="Vernam Field">Vernam Field</a>, <a href="/wiki/Jamaica" title="Jamaica">Jamaica</a>. <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Completed_interiour_view_of_80th_CB%27s_LTA.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Completed_interiour_view_of_80th_CB%27s_LTA.jpg/220px-Completed_interiour_view_of_80th_CB%27s_LTA.jpg" decoding="async" width="220" height="159" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Completed_interiour_view_of_80th_CB%27s_LTA.jpg/330px-Completed_interiour_view_of_80th_CB%27s_LTA.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/48/Completed_interiour_view_of_80th_CB%27s_LTA.jpg/440px-Completed_interiour_view_of_80th_CB%27s_LTA.jpg 2x" data-file-width="645" data-file-height="466" /></a><figcaption>Interior view of <a href="/wiki/Carlsen_Air_Force_Base" title="Carlsen Air Force Base">Carlsen Field's</a> LTA hangar built by African American <a href="/wiki/Seabee" title="Seabee">Seabees</a> of the 80th Naval Construction in 1943</figcaption></figure> Navy blimps of Fleet Airship Wing Five, (ZP-51) operated from bases in <a href="/wiki/Trinidad" title="Trinidad">Trinidad</a>, <a href="/wiki/British_Guiana" title="British Guiana">British Guiana</a> and <a href="/wiki/Paramaribo" title="Paramaribo">Paramaribo</a>, <a href="/wiki/Suriname_(Dutch_colony)" class="mw-redirect" title="Suriname (Dutch colony)">Suriname</a>. Fleet Airship Wing Four operated along the coast of <a href="/wiki/Brazil" title="Brazil">Brazil</a>. Two squadrons, VP-41 and VP-42 flew from bases at <a href="/wiki/Amap%C3%A1" title="Amapá">Amapá</a>, <a href="/wiki/Igarap%C3%A9-A%C3%A7u" title="Igarapé-Açu">Igarapé-Açu</a>, <a href="/wiki/S%C3%A3o_Lu%C3%ADs,_Maranh%C3%A3o" title="São Luís, Maranhão">São Luís</a> <a href="/wiki/Fortaleza" title="Fortaleza">Fortaleza</a>, <a href="/wiki/Fernando_de_Noronha" title="Fernando de Noronha">Fernando de Noronha</a>, <a href="/wiki/Recife" title="Recife">Recife</a>, <a href="/wiki/Macei%C3%B3" title="Maceió">Maceió</a>, <a href="/w/index.php?title=Ipitanga&action=edit&redlink=1" class="new" title="Ipitanga (page does not exist)">Ipitanga</a> (near <a href="/wiki/Salvador,_Bahia" title="Salvador, Bahia">Salvador, Bahia</a>), <a href="/wiki/Caravelas" title="Caravelas">Caravelas</a>, <a href="/wiki/Vit%C3%B3ria,_Esp%C3%ADrito_Santo" title="Vitória, Espírito Santo">Vitória</a> and the hangar built for the Graf Zeppelin at <a href="/wiki/Santa_Cruz,_Rio_de_Janeiro" title="Santa Cruz, Rio de Janeiro">Santa Cruz, Rio de Janeiro</a>. Fleet Airship Wing Three operated squadrons, ZP-32 from Moffett Field, ZP-31 at NAS Santa Ana, and ZP-33 at <a href="/wiki/Naval_Air_Station_Tillamook" title="Naval Air Station Tillamook">NAS Tillamook, Oregon</a>. Auxiliary fields were at <a href="/wiki/Del_Mar,_California" title="Del Mar, California">Del Mar</a>, <a href="/wiki/Lompoc,_California" title="Lompoc, California">Lompoc</a>, <a href="/wiki/Watsonville,_California" title="Watsonville, California">Watsonville</a> and <a href="/wiki/Eureka,_California" title="Eureka, California">Eureka</a>, California, <a href="/wiki/North_Bend,_Oregon" title="North Bend, Oregon">North Bend</a> and <a href="/wiki/Astoria,_Oregon" title="Astoria, Oregon">Astoria, Oregon</a>, as well as <a href="/wiki/Shelton,_Washington" title="Shelton, Washington">Shelton</a> and <a href="/wiki/Quillayute_Airport" title="Quillayute Airport">Quillayute</a> in Washington. From 2 January 1942 until the end of war airship operations in the Atlantic, the blimps of the Atlantic fleet made 37,554 flights and flew 378,237 hours. Of the over 70,000 ships in convoys protected by blimps, only one was sunk by a submarine while under blimp escort.<a href="#cite_note-Vaeth_1992-119">[118]</a> The <a href="/wiki/Soviet_Union" title="Soviet Union">Soviet Union</a> flew a single airship during the war. The W-12, built in 1939, entered service in 1942 for paratrooper training and equipment transport. It made 1432 flights with 300 <a href="/wiki/Tonne" title="Tonne">metric tons</a> of cargo until 1945. On 1 February 1945, the Soviets constructed a second airship, a Pobeda-class (Victory-class) unit (used for mine-sweeping and wreckage clearing in the Black Sea) that crashed on 21 January 1947. Another W-class – W-12bis Patriot – was commissioned in 1947 and was mostly used until the mid-1950s for crew training, parades and propaganda. <div class="mw-heading mw-heading3"><h3 id="Postwar_period">Postwar period</h3>[<a href="/w/index.php?title=Airship&action=edit&section=32" title="Edit section: Postwar period">edit</a>]</div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Goodyear_blimp.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Goodyear_blimp.jpg/220px-Goodyear_blimp.jpg" decoding="async" width="220" height="144" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Goodyear_blimp.jpg/330px-Goodyear_blimp.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/4/4d/Goodyear_blimp.jpg 2x" data-file-width="429" data-file-height="280" /></a><figcaption>One of the <a href="/wiki/Goodyear_Tire_and_Rubber_Company" title="Goodyear Tire and Rubber Company">Goodyear Tire and Rubber Company</a>'s <a href="/wiki/Goodyear_Blimp" title="Goodyear Blimp">blimp</a> fleet, being replaced by <a href="/wiki/LZ_N07-101" class="mw-redirect" title="LZ N07-101">Zeppelin NT semirigids</a></figcaption></figure> Although airships are no longer used for major cargo and passenger transport, they are still used for other purposes such as <a href="/wiki/Advertising" title="Advertising">advertising</a>, <a href="/wiki/Sightseeing" class="mw-redirect" title="Sightseeing">sightseeing</a>, surveillance, research and <a href="/wiki/Advocacy" title="Advocacy">advocacy</a>. There were several studies and proposals for <a href="/wiki/Atomic_airship" class="mw-redirect" title="Atomic airship">nuclear-powered airships</a>, starting with a 1954 study by F.W. Locke Jr for US Navy.<a href="#cite_note-123">[122]</a> In 1957 Edwin J. Kirschner published the book The Zeppelin in the Atomic Age,<a href="#cite_note-124">[123]</a> which promoted the use of atomic airships. In 1959 <a href="/wiki/Goodyear_Aerospace" title="Goodyear Aerospace">Goodyear</a> presented a plan for nuclear-powered airship for both military and commercial use. Several other proposals and papers were published during the next decades.<a href="#cite_note-125">[124]</a> In the 1980s, <a href="/wiki/Per_Lindstrand" title="Per Lindstrand">Per Lindstrand</a> and his team introduced the GA-42 airship, the first airship to use <a href="/wiki/Aircraft_flight_control_system#Fly-by-wire_control_systems" title="Aircraft flight control system">fly-by-wire flight control</a>, which considerably reduced the pilot's workload. An airship was prominently featured in the <a href="/wiki/James_Bond_(film_series)" class="mw-redirect" title="James Bond (film series)">James Bond film</a> <a href="/wiki/A_View_to_a_Kill" title="A View to a Kill">A View to a Kill</a>, released in 1985. The Skyship 500 had the livery of Zorin Industries.<a href="#cite_note-126">[125]</a> The world's largest <a href="/wiki/Thermal_airship" title="Thermal airship">thermal airship</a> (300,000 cubic feet; 8,500 cubic metres) was constructed by the <a href="/wiki/Per_Lindstrand" title="Per Lindstrand">Per Lindstrand</a> company for French botanists in 1993. The AS-300 carried an underslung raft, which was positioned by the airship on top of tree canopies in the rain forest, allowing the botanists to carry out their treetop research without significant damage to the rainforest. When research was finished at a given location, the airship returned to pick up and relocate the raft.<a href="#cite_note-127">[126]</a> In June 1987, the U.S. Navy awarded a US$168.9 million contract to <a href="/wiki/Westinghouse_Electric" class="mw-redirect" title="Westinghouse Electric">Westinghouse Electric</a> and <a href="/wiki/Airship_Industries" title="Airship Industries">Airship Industries</a> of the UK to find out whether an airship could be used as an airborne platform to detect the threat of sea-skimming missiles, such as the <a href="/wiki/Exocet" title="Exocet">Exocet</a>.<a href="#cite_note-nyt870606-128">[127]</a> At 2.5 million cubic feet, the Westinghouse/Airship Industries Sentinel 5000 (Redesignated YEZ-2A by the U.S. Navy) prototype design was to have been the largest blimp ever constructed.<a href="#cite_note-129">[128]</a> Additional funding for the Naval Airship Program was killed in 1995 and development was discontinued. The <a href="/wiki/SVAM_CA-80" title="SVAM CA-80">SVAM CA-80</a> airship, which was produced in 2000 by Shanghai Vantage Airship Manufacture Co., Ltd., had a successful trial flight in September 2001. This was designed for advertisement and propagation, air-photo, scientific test, tour and surveillance duties. It was certified as a grade-A Hi-Tech introduction program (No. 20000186) in Shanghai. The CAAC authority granted a type design approval and certificate of airworthiness for the airship.<a href="#cite_note-130">[129]</a> In the 1990s the Zeppelin company returned to the airship business. Their new model, designated the <a href="/wiki/Zeppelin_NT" title="Zeppelin NT">Zeppelin NT</a>, made its maiden flight on 18 September 1997. As of 2009<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Airship&action=edit">[update]</a> there were four NT aircraft flying, a fifth was completed in March 2009 and an expanded NT-14 (14,000 cubic meters of helium, capable of carrying 19 passengers) was under construction. One was sold to a Japanese company, and was planned to be flown to Japan in the summer of 2004. Due to delays getting permission from the Russian government, the company decided to transport the airship to Japan by sea. One of the four NT craft is in South Africa carrying diamond detection equipment from De Beers, an application at which the very stable low vibration NT platform excels. The project included design adaptations for high temperature operation and desert climate, as well as a separate <a href="/wiki/Mooring_mast" title="Mooring mast">mooring mast</a> and a very heavy mooring truck. NT-4 belonged to <a href="/wiki/Airship_Ventures" title="Airship Ventures">Airship Ventures</a> of Moffett Field, Mountain View in the San Francisco Bay Area, and provided sight-seeing tours. <a href="/wiki/Blimp" title="Blimp">Blimps</a> are used for advertising and as TV camera platforms at major sporting events. The most iconic of these are the <a href="/wiki/Goodyear_Blimp" title="Goodyear Blimp">Goodyear Blimps</a>. Goodyear operates three blimps in the United States, and <a href="/wiki/American_Blimp_Corporation" title="American Blimp Corporation">The Lightship Group</a>, now The AirSign Airship Group,<a href="#cite_note-131">[130]</a> operates up to 19 advertising blimps around the world. <a href="/wiki/Airship_Management_Services" title="Airship Management Services">Airship Management Services</a> owns and operates three <a href="/wiki/Skyship_600" class="mw-redirect" title="Skyship 600">Skyship 600</a> blimps. Two operate as advertising and security ships in North America and the Caribbean. <a href="/wiki/Airship_Ventures" title="Airship Ventures">Airship Ventures</a> operated a Zeppelin NT for advertising, passenger service and special mission projects. They were the only airship operator in the U.S. authorized to fly commercial passengers, until closing their doors in 2012. <a href="/w/index.php?title=Skycruise_Switzerland_AG&action=edit&redlink=1" class="new" title="Skycruise Switzerland AG (page does not exist)">Skycruise Switzerland AG</a> owns and operates two <a href="/wiki/Skyship_600" class="mw-redirect" title="Skyship 600">Skyship 600</a> blimps. One operates regularly over Switzerland used on sightseeing tours. <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Spiritofdubai.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Spiritofdubai.jpg/170px-Spiritofdubai.jpg" decoding="async" width="170" height="329" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Spiritofdubai.jpg/255px-Spiritofdubai.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/55/Spiritofdubai.jpg/340px-Spiritofdubai.jpg 2x" data-file-width="391" data-file-height="756" /></a><figcaption>The <a href="/wiki/Spirit_of_Dubai" class="mw-redirect" title="Spirit of Dubai">Spirit of Dubai</a> approaches its motorized <a href="/wiki/Mooring_mast" title="Mooring mast">mooring mast</a></figcaption></figure> The Switzerland-based Skyship 600 has also played other roles over the years. For example, it was flown over <a href="/wiki/Athens" title="Athens">Athens</a> during the <a href="/wiki/2004_Summer_Olympics" title="2004 Summer Olympics">2004 Summer Olympics</a> as a security measure. In November 2006, it carried advertising calling it The <a href="/wiki/Spirit_of_Dubai" class="mw-redirect" title="Spirit of Dubai">Spirit of Dubai</a> as it began a publicity tour from London to Dubai, UAE on behalf of <a href="/wiki/The_Palm_Islands" class="mw-redirect" title="The Palm Islands">The Palm Islands</a>, the world's largest man-made islands created as a residential complex. Los Angeles-based <a href="/wiki/Worldwide_Aeros_Corp." class="mw-redirect" title="Worldwide Aeros Corp.">Worldwide Aeros Corp.</a> produces FAA Type Certified <a href="/w/index.php?title=Aeros_40D_Sky_Dragon&action=edit&redlink=1" class="new" title="Aeros 40D Sky Dragon (page does not exist)">Aeros 40D Sky Dragon</a> airships.<a href="#cite_note-132">[131]</a> In May 2006, the U.S. Navy began to fly airships again after a hiatus of nearly 44 years. The program uses a single <a href="/wiki/American_Blimp_Company" class="mw-redirect" title="American Blimp Company">American Blimp Company</a> A-170 nonrigid airship, with designation <a href="/wiki/American_Blimp_MZ-3" title="American Blimp MZ-3">MZ-3A</a>. Operations focus on crew training and research, and the platform integrator is <a href="/wiki/Northrop_Grumman" title="Northrop Grumman">Northrop Grumman</a>. The program is directed by the <a href="/wiki/Naval_Air_Systems_Command" title="Naval Air Systems Command">Naval Air Systems Command</a> and is being carried out at <a href="/wiki/NAES_Lakehurst" class="mw-redirect" title="NAES Lakehurst">NAES Lakehurst</a>, the original centre of U.S. Navy lighter-than-air operations in previous decades. In November 2006 the U.S. Army bought an A380+ airship from <a href="/wiki/American_Blimp_Corporation" title="American Blimp Corporation">American Blimp Corporation</a> through a Systems level contract with <a href="/wiki/Northrop_Grumman" title="Northrop Grumman">Northrop Grumman</a> and <a href="/wiki/Booz_Allen_Hamilton" title="Booz Allen Hamilton">Booz Allen Hamilton</a>. The airship started flight tests in late 2007, with a primary goal of carrying 2,500 lb (1,100 kg) of payload to an altitude of 15,000 ft (4,600 m) under <a href="/wiki/Remote_control" title="Remote control">remote control</a> and <a href="/w/index.php?title=Autonomous_waypoint_navigation&action=edit&redlink=1" class="new" title="Autonomous waypoint navigation (page does not exist)">autonomous waypoint navigation</a>. The program will also demonstrate carrying 1,000 lb (450 kg) of payload to 20,000 ft (6,100 m) The platform could be used for intelligence collection. In 2008, the CA-150 airship was launched by Vantage Airship. This is an improved modification of model CA-120 and completed manufacturing in 2008. With larger volume and increased passenger capacity, it is the largest manned nonrigid airship in China at present.<a href="#cite_note-133">[132]</a> In late June 2014 the <a href="/wiki/Electronic_Frontier_Foundation" title="Electronic Frontier Foundation">Electronic Frontier Foundation</a> flew the GEFA-FLUG AS 105 GD/4<a href="#cite_note-134">[133]</a> blimp AE Bates (owned by, and in conjunction with, <a href="/wiki/Greenpeace" title="Greenpeace">Greenpeace</a>) over the <a href="/wiki/NSA" class="mw-redirect" title="NSA">NSA</a>'s <a href="/wiki/Bluffdale,_Utah" title="Bluffdale, Utah">Bluffdale</a> <a href="/wiki/Utah_Data_Center" title="Utah Data Center">Utah Data Center</a> in protest.<a href="#cite_note-135">[134]</a> <div class="mw-heading mw-heading4"><h4 id="Postwar_projects">Postwar projects</h4>[<a href="/w/index.php?title=Airship&action=edit&section=33" title="Edit section: Postwar projects">edit</a>]</div> Hybrid designs such as the <a href="/wiki/Helistat" class="mw-redirect" title="Helistat">Heli-Stat</a> airship/helicopter, the <a href="/wiki/Aereon" title="Aereon">Aereon</a> aerostatic/aerodynamic craft, and the <a href="/wiki/AeroLift_CycloCrane" title="AeroLift CycloCrane">CycloCrane</a> (a hybrid aerostatic/rotorcraft), struggled to take flight. The Cyclocrane was also interesting in that the airship's envelope rotated along its longitudinal axis. In 2005, a short-lived project of the U.S. <a href="/wiki/Defense_Advanced_Research_Projects_Agency" class="mw-redirect" title="Defense Advanced Research Projects Agency">Defense Advanced Research Projects Agency</a> (DARPA) was <a href="/wiki/Walrus_HULA" title="Walrus HULA">Walrus HULA</a>, which explored the potential for using airships as long-distance, heavy lift craft.<a href="#cite_note-136">[135]</a><a href="#cite_note-137">[136]</a> The primary goal of the research program was to determine the feasibility of building an airship capable of carrying 500 short tons (450 t) of payload a distance of 12,000 mi (19,000 km) and land on an unimproved location without the use of external <a href="https://en.wiktionary.org/wiki/ballast" class="extiw" title="wikt:ballast">ballast</a> or ground equipment (such as masts). In 2005, two contractors, <a href="/wiki/Lockheed_Martin" title="Lockheed Martin">Lockheed Martin</a> and <a href="/w/index.php?title=US_Aeros_Airships&action=edit&redlink=1" class="new" title="US Aeros Airships (page does not exist)">US Aeros Airships</a> were each awarded approximately $3 million to do feasibility studies of designs for WALRUS. Congress removed funding for Walrus HULA in 2006.<a href="#cite_note-138">[137]</a> <div class="mw-heading mw-heading2"><h2 id="Modern">Modern</h2>[<a href="/w/index.php?title=Airship&action=edit&section=34" title="Edit section: Modern">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-More_citations_needed_section plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></div></td><td class="mbox-text"><div class="mbox-text-span">This section needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a>. Please help <a href="/wiki/Special:EditPage/Airship" title="Special:EditPage/Airship">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a> in this section. Unsourced material may be challenged and removed. (July 2010) (<a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a>)</div></td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Military">Military</h3>[<a href="/w/index.php?title=Airship&action=edit&section=35" title="Edit section: Military">edit</a>]</div> In 2010, the U.S. Army awarded a $517 million (£350.6 million) contract to <a href="/wiki/Northrop_Grumman" title="Northrop Grumman">Northrop Grumman</a> and partner <a href="/wiki/Hybrid_Air_Vehicles" title="Hybrid Air Vehicles">Hybrid Air Vehicles</a> to develop a <a href="/wiki/Long_Endurance_Multi-Intelligence_Vehicle" class="mw-redirect" title="Long Endurance Multi-Intelligence Vehicle">Long Endurance Multi-Intelligence Vehicle</a> (LEMV) system, in the form of three HAV 304s.<a href="#cite_note-139">[138]</a><a href="#cite_note-140">[139]</a><a href="#cite_note-141">[140]</a> The project was cancelled in February 2012 due to it being behind schedule and over budget; also the forthcoming U.S. withdrawal from <a href="/wiki/Afghanistan" title="Afghanistan">Afghanistan</a> where it was intended to be deployed.<a href="#cite_note-142">[141]</a> Following this the <a href="/wiki/Hybrid_Air_Vehicles_HAV_304_Airlander_10" class="mw-redirect" title="Hybrid Air Vehicles HAV 304 Airlander 10">Hybrid Air Vehicles HAV 304 Airlander 10</a> was repurchased by <a href="/wiki/Hybrid_Air_Vehicles" title="Hybrid Air Vehicles">Hybrid Air Vehicles</a> then modified and reassembled in <a href="/wiki/Bedford" title="Bedford">Bedford</a>, UK, and renamed the Airlander 10.<a href="#cite_note-143">[142]</a> As of 2018, it was being tested in readiness for its UK flight test programme.<a href="#cite_note-144">[143]</a> <a href="/w/index.php?title=A-NSE&action=edit&redlink=1" class="new" title="A-NSE (page does not exist)">A-NSE</a> [<a href="https://fr.wikipedia.org/wiki/A-NSE" class="extiw" title="fr:A-NSE">fr</a>], a French company, manufactures and operates airships and aerostats. For 2 years, A-NSE has been testing its airships for the French Army. Airships and aerostats are operated to provide intelligence, surveillance, and reconnaissance (ISR) support. Their airships include many innovative features such as water ballast take-off and landing systems, variable geometry envelopes and thrust–vectoring systems.<figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:A-N400.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5e/A-N400.jpg/220px-A-N400.jpg" decoding="async" width="220" height="146" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5e/A-N400.jpg/330px-A-N400.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5e/A-N400.jpg/440px-A-N400.jpg 2x" data-file-width="4288" data-file-height="2848" /></a><figcaption>A-N400 (A-NSE company)</figcaption></figure><a href="#cite_note-145">[144]</a> The U.S. government has funded two major projects in the high altitude arena. The <a href="/w/index.php?title=Composite_Hull_High_Altitude_Powered_Platform&action=edit&redlink=1" class="new" title="Composite Hull High Altitude Powered Platform (page does not exist)">Composite Hull High Altitude Powered Platform</a> (CHHAPP) is sponsored by <a href="/wiki/U.S._Army_Space_and_Missile_Defense_Command" class="mw-redirect" title="U.S. Army Space and Missile Defense Command">U.S. Army Space and Missile Defense Command</a>. This aircraft is also sometimes called HiSentinel High-Altitude Airship. This prototype ship made a five-hour test flight in September 2005. The second project, the <a href="/wiki/High-altitude_airship" class="mw-redirect" title="High-altitude airship">high-altitude airship</a> (HAA), is sponsored by DARPA. In 2005, DARPA awarded a contract for nearly $150 million to Lockheed Martin for prototype development. First flight of the HAA was planned for 2008 but suffered programmatic and funding delays. The HAA project evolved into the High Altitude Long Endurance-Demonstrator (HALE-D). The U.S. Army and Lockheed Martin launched the first-of-its kind HALE-D on July 27, 2011.<a href="#cite_note-146">[145]</a> After attaining an altitude of 32,000 ft (9,800 m), due to an anomaly, the company decided to abort the mission. The airship made a controlled descent in an unpopulated area of southwest Pennsylvania.<a href="#cite_note-147">[146]</a><a href="#cite_note-148">[147]</a><a href="#cite_note-149">[148]</a> On 31 January 2006 Lockheed Martin made the first flight of their secretly built <a href="/wiki/Hybrid_airship" title="Hybrid airship">hybrid airship</a> designated the <a href="/wiki/P-791" class="mw-redirect" title="P-791">P-791</a>. The design is very similar to the <a href="/wiki/SkyCat" title="SkyCat">SkyCat</a>, unsuccessfully promoted for many years by the British company <a href="/wiki/Airship_Industries#ATG_and_its_successors" title="Airship Industries">Advanced Technologies Group</a> (ATG). Dirigibles have been used in the <a href="/wiki/War_in_Afghanistan_(2001%E2%80%93present)" class="mw-redirect" title="War in Afghanistan (2001–present)">War in Afghanistan</a> for <a href="/wiki/Reconnaissance" title="Reconnaissance">reconnaissance</a> purposes, as they allow for constant monitoring of a specific area through cameras mounted on the airships.<a href="#cite_note-150">[149]</a> <div class="mw-heading mw-heading3"><h3 id="Passenger_transport">Passenger transport</h3>[<a href="/w/index.php?title=Airship&action=edit&section=36" title="Edit section: Passenger transport">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Zeppelin_NT_im_Flug.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Zeppelin_NT_im_Flug.jpg/220px-Zeppelin_NT_im_Flug.jpg" decoding="async" width="220" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Zeppelin_NT_im_Flug.jpg/330px-Zeppelin_NT_im_Flug.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Zeppelin_NT_im_Flug.jpg/440px-Zeppelin_NT_im_Flug.jpg 2x" data-file-width="778" data-file-height="302" /></a><figcaption>A <a href="/wiki/Zeppelin_NT" title="Zeppelin NT">Zeppelin NT</a> airship</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Yokoso!_Japan.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Yokoso%21_Japan.jpg/220px-Yokoso%21_Japan.jpg" decoding="async" width="220" height="108" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Yokoso%21_Japan.jpg/330px-Yokoso%21_Japan.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Yokoso%21_Japan.jpg/440px-Yokoso%21_Japan.jpg 2x" data-file-width="600" data-file-height="295" /></a><figcaption>Yokoso! Japan passenger airship at the <a href="/wiki/Malmi_Airport" class="mw-redirect" title="Malmi Airport">Malmi Airport</a> in <a href="/wiki/Helsinki" title="Helsinki">Helsinki</a>, <a href="/wiki/Finland" title="Finland">Finland</a></figcaption></figure> In the 1990s, the successor of the original Zeppelin company in <a href="/wiki/Friedrichshafen" title="Friedrichshafen">Friedrichshafen</a>, the Zeppelin Luftschifftechnik GmbH, reengaged in airship construction. The first experimental craft (later christened Friedrichshafen) of the type "<a href="/wiki/Zeppelin_NT" title="Zeppelin NT">Zeppelin NT</a>" flew in September 1997. Though larger than common blimps, the Neue Technologie (New Technology) zeppelins are much smaller than their giant ancestors and not actually Zeppelin-types in the classical sense. They are sophisticated semirigids. Apart from the greater payload, their main advantages compared to blimps are higher speed and excellent maneuverability. Meanwhile, several Zeppelin NT have been produced and operated profitably in joyrides, research flights and similar applications. In June 2004, a Zeppelin NT was sold for the first time to a Japanese company, Nippon Airship Corporation, for tourism and advertising mainly around Tokyo. It was also given a role at the <a href="/wiki/Expo_2005" title="Expo 2005">2005 Expo</a> in <a href="/wiki/Aichi" class="mw-redirect" title="Aichi">Aichi</a>. The aircraft began a flight from Friedrichshafen to Japan, stopping at <a href="/wiki/Geneva" title="Geneva">Geneva</a>, Paris, <a href="/wiki/Rotterdam" title="Rotterdam">Rotterdam</a>, <a href="/wiki/Munich" title="Munich">Munich</a>, Berlin, <a href="/wiki/Stockholm" title="Stockholm">Stockholm</a> and other European cities to carry passengers on short legs of the flight. Russian authorities denied overflight permission, so the airship had to be dismantled and shipped to Japan rather than following the historic <a href="/wiki/LZ_127_Graf_Zeppelin#Round-the-world_flight_(1929)" title="LZ 127 Graf Zeppelin">Graf Zeppelin flight from Germany to Japan</a>. In 2008, <a href="/wiki/Airship_Ventures" title="Airship Ventures">Airship Ventures Inc.</a> began operations from <a href="/wiki/Moffett_Federal_Airfield" title="Moffett Federal Airfield">Moffett Federal Airfield</a> near <a href="/wiki/Mountain_View,_California" title="Mountain View, California">Mountain View, California</a> and until November 2012 offered tours of the <a href="/wiki/San_Francisco_Bay_Area" title="San Francisco Bay Area">San Francisco Bay Area</a> for up to 12 passengers. <div class="mw-heading mw-heading3"><h3 id="Exploration">Exploration</h3>[<a href="/w/index.php?title=Airship&action=edit&section=37" title="Edit section: Exploration">edit</a>]</div> In November 2005, <a href="/wiki/De_Beers" title="De Beers">De Beers</a>, a diamond mining company, launched an airship exploration program over the remote <a href="/wiki/Kalahari_Desert" title="Kalahari Desert">Kalahari Desert</a>. A <a href="/wiki/Zeppelin_NT" title="Zeppelin NT">Zeppelin NT</a>, equipped with a Bell Geospace <a href="/wiki/Gravity_gradiometer" class="mw-redirect" title="Gravity gradiometer">gravity gradiometer</a>, was used to find potential diamond mines by scanning the local geography for low-density rock formations, known as <a href="/wiki/Kimberlite_pipes" class="mw-redirect" title="Kimberlite pipes">kimberlite pipes</a>. On 21 September 2007, the airship was severely damaged by a whirlwind while in <a href="/wiki/Botswana" title="Botswana">Botswana</a>. One crew member, who was on watch aboard the moored craft, was slightly injured but released after overnight observation in hospital. <div class="mw-heading mw-heading3"><h3 id="Thermal">Thermal</h3>[<a href="/w/index.php?title=Airship&action=edit&section=38" title="Edit section: Thermal">edit</a>]</div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Prallluftschiff_01_KMJ.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/39/Prallluftschiff_01_KMJ.jpg/170px-Prallluftschiff_01_KMJ.jpg" decoding="async" width="170" height="164" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/39/Prallluftschiff_01_KMJ.jpg/255px-Prallluftschiff_01_KMJ.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/39/Prallluftschiff_01_KMJ.jpg/340px-Prallluftschiff_01_KMJ.jpg 2x" data-file-width="768" data-file-height="740" /></a><figcaption><a href="/wiki/Thermal_airship" title="Thermal airship">Thermal airship</a> (manufacturer GEFA-FLUG/Germany)</figcaption></figure> Several companies, such as <a href="/wiki/Cameron_Balloons" title="Cameron Balloons">Cameron Balloons</a> in <a href="/wiki/Bristol" title="Bristol">Bristol</a>, United Kingdom, build <a href="/wiki/Thermal_airship" title="Thermal airship">hot-air airships</a>. These combine the structures of both hot-air balloons and small airships. The envelope is the normal cigar shape, complete with tail fins, but is inflated with hot air instead of helium to provide the lifting force. A small gondola, carrying the pilot and passengers, a small engine, and the burners to provide the hot air are suspended below the envelope, beneath an opening through which the burners protrude. Hot-air airships typically cost less to buy and maintain than modern helium-based <a href="/wiki/Blimp" title="Blimp">blimps</a>, and can be quickly deflated after flights. This makes them easy to carry in trailers or trucks and inexpensive to store. They are usually very slow moving, with a typical top speed of 25–30 km/h (16–19 mph; 6.9–8.3 m/s). They are mainly used for advertising, but at least one has been used in <a href="/wiki/Rainforest" title="Rainforest">rainforests</a> for wildlife observation, as they can be easily transported to remote areas. <div class="mw-heading mw-heading3"><h3 id="Unmanned_remote">Unmanned remote</h3>[<a href="/w/index.php?title=Airship&action=edit&section=39" title="Edit section: Unmanned remote">edit</a>]</div> <a href="/wiki/Remote_control" title="Remote control">Remote-controlled</a> (RC) airships, a type of <a href="/wiki/Unmanned_aerial_system" class="mw-redirect" title="Unmanned aerial system">unmanned aerial system</a> (UAS), are sometimes used for commercial purposes such as advertising and aerial video and photography as well as recreational purposes. They are particularly common as an advertising mechanism at indoor stadiums. While RC airships are sometimes flown outdoors, doing so for commercial purposes is illegal in the US.<a href="#cite_note-151">[150]</a> Commercial use of an unmanned airship must be certified under part 121.[<a href="/wiki/Wikipedia:Please_clarify" title="Wikipedia:Please clarify">clarification needed</a>] <div class="mw-heading mw-heading3"><h3 id="Adventures">Adventures</h3>[<a href="/w/index.php?title=Airship&action=edit&section=40" title="Edit section: Adventures">edit</a>]</div> In 2008, French adventurer <a href="https://fr.wikipedia.org/wiki/St%C3%A9phane_Rousson" class="extiw" title="fr:Stéphane Rousson">Stephane Rousson</a> attempted to cross the English Channel with a muscular pedal powered airship.<a href="#cite_note-152">[151]</a><a href="#cite_note-153">[152]</a><a href="#cite_note-154">[153]</a> Stephane Rousson also flies the Aérosail, a <a href="https://fr.wikipedia.org/wiki/Voilier_des_airs" class="extiw" title="fr:Voilier des airs">sky sailing yacht</a>.<a href="#cite_note-155">[154]</a><a href="#cite_note-156">[155]</a><a href="#cite_note-157">[156]</a> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><a href="/wiki/File:Aerosail.jpg" class="mw-file-description" title="Aerosail"><img alt="Aerosail" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Aerosail.jpg/120px-Aerosail.jpg" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Aerosail.jpg/180px-Aerosail.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Aerosail.jpg/240px-Aerosail.jpg 2x" data-file-width="2816" data-file-height="2112" /></a></div> <div class="gallerytext">Aerosail</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><a href="/wiki/File:Mlle_Louise_ballon_dirigeable_%C3%A0_propulsion_humaine.jpg" class="mw-file-description" title="Mlle Louise pedal Airship by Stephane Rousson"><img alt="Mlle Louise pedal Airship by Stephane Rousson" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Mlle_Louise_ballon_dirigeable_%C3%A0_propulsion_humaine.jpg/120px-Mlle_Louise_ballon_dirigeable_%C3%A0_propulsion_humaine.jpg" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Mlle_Louise_ballon_dirigeable_%C3%A0_propulsion_humaine.jpg/180px-Mlle_Louise_ballon_dirigeable_%C3%A0_propulsion_humaine.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Mlle_Louise_ballon_dirigeable_%C3%A0_propulsion_humaine.jpg/240px-Mlle_Louise_ballon_dirigeable_%C3%A0_propulsion_humaine.jpg 2x" data-file-width="2592" data-file-height="1944" /></a></div> <div class="gallerytext">Mlle Louise pedal Airship by Stephane Rousson </div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><a href="/wiki/File:Zeppy_Pilot%C3%A9_par_Stephane_Belgrand_Rousson_%C3%A0_Villefranche_sur_Mer.jpg" class="mw-file-description" title="Zeppy 3 by Stephane Rousson"><img alt="Zeppy 3 by Stephane Rousson" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/10/Zeppy_Pilot%C3%A9_par_Stephane_Belgrand_Rousson_%C3%A0_Villefranche_sur_Mer.jpg/120px-Zeppy_Pilot%C3%A9_par_Stephane_Belgrand_Rousson_%C3%A0_Villefranche_sur_Mer.jpg" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/10/Zeppy_Pilot%C3%A9_par_Stephane_Belgrand_Rousson_%C3%A0_Villefranche_sur_Mer.jpg/180px-Zeppy_Pilot%C3%A9_par_Stephane_Belgrand_Rousson_%C3%A0_Villefranche_sur_Mer.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/10/Zeppy_Pilot%C3%A9_par_Stephane_Belgrand_Rousson_%C3%A0_Villefranche_sur_Mer.jpg/240px-Zeppy_Pilot%C3%A9_par_Stephane_Belgrand_Rousson_%C3%A0_Villefranche_sur_Mer.jpg 2x" data-file-width="4000" data-file-height="3008" /></a></div> <div class="gallerytext">Zeppy 3 by Stephane Rousson </div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><a href="/wiki/File:Zeppy_Base_Nature_Frejus.jpg" class="mw-file-description" title="Zeppy One"><img alt="Zeppy One" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Zeppy_Base_Nature_Frejus.jpg/120px-Zeppy_Base_Nature_Frejus.jpg" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Zeppy_Base_Nature_Frejus.jpg/180px-Zeppy_Base_Nature_Frejus.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Zeppy_Base_Nature_Frejus.jpg/240px-Zeppy_Base_Nature_Frejus.jpg 2x" data-file-width="3488" data-file-height="2616" /></a></div> <div class="gallerytext">Zeppy One</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="Current_design_projects">Current design projects</h2>[<a href="/w/index.php?title=Airship&action=edit&section=41" title="Edit section: Current design projects">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-More_citations_needed_section plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></div></td><td class="mbox-text"><div class="mbox-text-span">This section needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a>. Please help <a href="/wiki/Special:EditPage/Airship" title="Special:EditPage/Airship">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a> in this section. Unsourced material may be challenged and removed. (June 2008) (<a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a>)</div></td></tr></tbody></table> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Giant_Aircraft_Comparison.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Giant_Aircraft_Comparison.svg/220px-Giant_Aircraft_Comparison.svg.png" decoding="async" width="220" height="73" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Giant_Aircraft_Comparison.svg/330px-Giant_Aircraft_Comparison.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Giant_Aircraft_Comparison.svg/440px-Giant_Aircraft_Comparison.svg.png 2x" data-file-width="1200" data-file-height="400" /></a><figcaption>The largest airship, the <a href="/wiki/LZ_129_Hindenburg" title="LZ 129 Hindenburg">LZ 129 Hindenburg</a> at 245 meters length and 41 meters diameter, dwarfs the size of the largest historic and modern passenger and cargo aeroplanes.</figcaption></figure> Today, with large, fast, and more cost-efficient <a href="/wiki/Fixed-wing_aircraft" title="Fixed-wing aircraft">fixed-wing aircraft</a> and <a href="/wiki/Helicopters" class="mw-redirect" title="Helicopters">helicopters</a>, it is unknown whether huge airships can operate profitably in regular passenger transport though, as energy costs rise, attention is once again returning to these lighter-than-air vessels as a possible alternative. At the very least, the idea of comparatively slow, "majestic" cruising at relatively low altitudes and in comfortable atmosphere certainly has retained some appeal. There have been some niches for airships in and after World War II, such as long-duration observations, <a href="/wiki/Anti-submarine_warfare" title="Anti-submarine warfare">antisubmarine</a> patrol, platforms for TV camera crews, and <a href="/wiki/Advertising" title="Advertising">advertising</a>; these generally require only small and flexible craft, and have thus generally been better fitted for cheaper (non-passenger) blimps. <div class="mw-heading mw-heading3"><h3 id="Heavy_lifting">Heavy lifting</h3>[<a href="/w/index.php?title=Airship&action=edit&section=42" title="Edit section: Heavy lifting">edit</a>]</div> It has periodically been suggested that airships could be employed for <a href="/wiki/Cargo_transport" class="mw-redirect" title="Cargo transport">cargo transport</a>, especially delivering extremely heavy loads to areas with poor infrastructure over great distances. This has also been called roadless trucking.<a href="#cite_note-158">[157]</a> Also, airships could be used for heavy lifting over short distances (e.g. on construction sites); this is described as heavy-lift, short-haul.<a href="#cite_note-159">[158]</a> In both cases, the airships are <a href="/wiki/Heavy_hauler" title="Heavy hauler">heavy haulers</a>. One recent enterprise of this sort was the <a href="/wiki/Cargolifter" class="mw-redirect" title="Cargolifter">Cargolifter</a> project, in which a hybrid (thus not entirely Zeppelin-type) airship even larger than Hindenburg was projected. Around 2000, CargoLifter AG built the world's largest self-supporting hall, measuring 360 m (1,180 ft) long, 210 m (690 ft) wide and 107 m (351 ft) high about 60 km (37 mi) south of Berlin. In May 2002, the project was stopped for financial reasons; the company had to file <a href="/wiki/Bankruptcy" title="Bankruptcy">bankruptcy</a>. The enormous CargoLifter hangar was later converted to house the <a href="/wiki/Tropical_Islands_Resort" title="Tropical Islands Resort">Tropical Islands Resort</a>.<a href="#cite_note-Lasker2016-160">[159]</a> Although no rigid airships are currently used for heavy lifting, <a href="/wiki/Hybrid_airship" title="Hybrid airship">hybrid airships</a> are being developed for such purposes. <a href="/wiki/AEREON_26" class="mw-redirect" title="AEREON 26">AEREON 26</a>, tested in 1971, was described in <a href="/wiki/John_McPhee" title="John McPhee">John McPhee</a>'s The Deltoid Pumpkin Seed. An impediment to the large-scale development of airships as heavy haulers has been figuring out how they can be used in a cost-efficient way. In order to have a significant economic advantage over ocean transport, cargo airships must be able to deliver their payload faster than ocean carriers but more cheaply than airplanes. William Crowder, a fellow at the <a href="/wiki/Logistics_Management_Institute" title="Logistics Management Institute">Logistics Management Institute</a>, has calculated that cargo airships are only economical when they can transport 500 to 1,000 tons, approximately the same as a super-jumbo aircraft.<a href="#cite_note-Lasker2016-160">[159]</a> The large initial investment required to build such a large airship has been a hindrance to production, especially given the risk inherent in a new technology. The chief commercial officer of the company hoping to sell the <a href="/wiki/LMH1" class="mw-redirect" title="LMH1">LMH-1</a>, a cargo airship currently being developed by <a href="/wiki/Lockheed_Martin" title="Lockheed Martin">Lockheed Martin</a>, believes that airships can be economical in hard-to-reach locations such as mining operations in northern Canada that currently require <a href="/wiki/Ice_road" title="Ice road">ice roads</a>.<a href="#cite_note-Lasker2016-160">[159]</a> <div class="mw-heading mw-heading3"><h3 id="Metal-clad_airships">Metal-clad airships</h3>[<a href="/w/index.php?title=Airship&action=edit&section=43" title="Edit section: Metal-clad airships">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Metal-clad_airship" title="Metal-clad airship">Metal-clad airship</a></div> A metal-clad airship has a very thin metal envelope, rather than the usual fabric. The shell may be either internally braced or <a href="/wiki/Monocoque" title="Monocoque">monocoque</a> as in the <a href="/wiki/ZMC-2" class="mw-redirect" title="ZMC-2">ZMC-2</a>, which flew many times in the 1920s, the only example ever to do so. The shell may be gas-tight as in a non-rigid blimp, or the design may employ internal gas bags as in a rigid airship. Compared to a fabric envelope the metal cladding is expected to be more durable. <div class="mw-heading mw-heading3"><h3 id="Hybrid_airships">Hybrid airships</h3>[<a href="/w/index.php?title=Airship&action=edit&section=44" title="Edit section: Hybrid airships">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Hybrid_airship" title="Hybrid airship">Hybrid airship</a></div> A <a href="/wiki/Hybrid_airship" title="Hybrid airship">hybrid airship</a> is a general term for an aircraft that combines characteristics of heavier-than-air (aeroplane or helicopter) and lighter-than-air technology. Examples include helicopter/airship hybrids intended for heavy lift applications and dynamic lift airships intended for long-range cruising. Most airships, when fully loaded with cargo and fuel, are usually ballasted to be heavier than air, and thus must use their propulsion system and shape to create aerodynamic lift, necessary to stay aloft. All airships can be operated to be slightly heavier than air at periods during flight (<a href="/wiki/Descent_(aircraft)" class="mw-redirect" title="Descent (aircraft)">descent</a>). Accordingly, the term "hybrid airship" refers to craft that obtain a significant portion of their lift from aerodynamic lift or other <a href="/wiki/Kinetic_energy" title="Kinetic energy">kinetic</a> means. For example, the <a href="/wiki/Aeroscraft" class="mw-redirect" title="Aeroscraft">Aeroscraft</a> is a buoyancy assisted air vehicle that generates lift through a combination of aerodynamics, thrust vectoring and gas buoyancy generation and management, and for much of the time will fly heavier than air. Aeroscraft is <a href="/wiki/Worldwide_Aeros_Corp" title="Worldwide Aeros Corp">Worldwide Aeros Corporation's</a> continuation of <a href="/wiki/DARPA" title="DARPA">DARPA</a>'s now cancelled <a href="/wiki/Walrus_HULA" title="Walrus HULA">Walrus HULA</a> (Hybrid Ultra Large Aircraft) project.<a href="#cite_note-161">[160]</a> The Patroller P3 hybrid airship developed by Advanced Hybrid Aircraft Ltd, BC, Canada, is a relatively small (85,000 cu ft / 2,400 m3) buoyant craft, manned by the crew of five and with the endurance of up to 72 hours. The flight-tests with the 40% RC scale model proved that such a craft can be launched and landed without a large team of strong ground-handlers.<a href="#cite_note-162">[161]</a> Design features a special "winglet" for aerodynamic lift control.<a href="#cite_note-163">[162]</a> <div class="mw-heading mw-heading3"><h3 id="Airships_in_space_exploration">Airships in space exploration</h3>[<a href="/w/index.php?title=Airship&action=edit&section=45" title="Edit section: Airships in space exploration">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:NASA_Cloud_City_on_Venus.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/NASA_Cloud_City_on_Venus.jpg/220px-NASA_Cloud_City_on_Venus.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/NASA_Cloud_City_on_Venus.jpg/330px-NASA_Cloud_City_on_Venus.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e8/NASA_Cloud_City_on_Venus.jpg/440px-NASA_Cloud_City_on_Venus.jpg 2x" data-file-width="1920" data-file-height="1080" /></a><figcaption>Artist's rendering of a NASA crewed floating outpost in the atmosphere of Venus</figcaption></figure> Airships have been proposed as a potential cheap alternative to surface rocket launches for achieving Earth orbit. <a href="/wiki/JP_Aerospace" title="JP Aerospace">JP Aerospace</a> have proposed the Airship to Orbit project, which intends to float a multi-stage airship up to <a href="/wiki/Mesosphere" title="Mesosphere">mesospheric</a> altitudes of 55 km (180,000 ft) and then use <a href="/wiki/Ion_propulsion" class="mw-redirect" title="Ion propulsion">ion propulsion</a> to accelerate to <a href="/wiki/Orbital_speed" title="Orbital speed">orbital speed</a>.<a href="#cite_note-164">[163]</a> At these heights, air resistance would not be a significant problem for achieving such speeds. The company has not yet built any of the three stages. <a href="/wiki/NASA" title="NASA">NASA</a> has proposed the <a href="/wiki/High_Altitude_Venus_Operational_Concept" title="High Altitude Venus Operational Concept">High Altitude Venus Operational Concept</a>, which comprises a series of five missions including crewed missions to the <a href="/wiki/Atmosphere_of_Venus" title="Atmosphere of Venus">atmosphere of Venus</a> in airships.<a href="#cite_note-165">[164]</a><a href="#cite_note-166">[165]</a><a href="#cite_note-167">[166]</a><a href="#cite_note-168">[167]</a> Pressures on the surface of the planet are too high for human habitation, but at a specific altitude the pressure is equal to that found on Earth and this makes Venus a potential target for human <a href="/wiki/Colonization_of_Venus" title="Colonization of Venus">colonization</a>. Hypothetically, there could be an <a href="/wiki/Vacuum_airship" title="Vacuum airship">airship lifted by a vacuum</a>—that is, by material that can contain nothing at all inside but withstand the atmospheric pressure from the outside. It is, at this point, science fiction, although NASA has posited that some kind of vacuum airship could eventually be used to explore the surface of Mars.<a href="#cite_note-169">[168]</a> <div class="mw-heading mw-heading3"><h3 id="Cruiser_feeder_transport_airship">Cruiser feeder transport airship</h3>[<a href="/w/index.php?title=Airship&action=edit&section=46" title="Edit section: Cruiser feeder transport airship">edit</a>]</div> EU FP7 MAAT Project<a href="#cite_note-170">[169]</a> has studied an innovative cruiser/feeder airship system,<a href="#cite_note-171">[170]</a> for the stratosphere with a cruiser remaining airborne for a long time and feeders connecting it to the ground and flying as piloted balloons.<a href="#cite_note-172">[171]</a> <div class="mw-heading mw-heading3"><h3 id="Airships_for_humanitarian_and_cargo_transport">Airships for humanitarian and cargo transport</h3>[<a href="/w/index.php?title=Airship&action=edit&section=47" title="Edit section: Airships for humanitarian and cargo transport">edit</a>]</div> <a href="/wiki/Google" title="Google">Google</a> co-founder <a href="/wiki/Sergey_Brin" title="Sergey Brin">Sergey Brin</a> founded LTA Research in 2015 to develop airships for humanitarian and cargo transport. The company's 124-meter-long airship Pathfinder 1 received from the <a href="/wiki/Federal_Aviation_Administration" title="Federal Aviation Administration">FAA</a> a special airworthiness certificate for the helium-filled airship in September 2023.<a href="#cite_note-173">[172]</a> The certificate allowed the largest airship since the ill-fated Hindenburg to begin flight tests at <a href="/wiki/Moffett_Federal_Airfield" title="Moffett Federal Airfield">Moffett Field</a>, a joint civil-military airport in Silicon Valley. <div class="mw-heading mw-heading2"><h2 id="Comparison_with_heavier-than-air_aircraft">Comparison with heavier-than-air aircraft</h2>[<a href="/w/index.php?title=Airship&action=edit&section=48" title="Edit section: Comparison with heavier-than-air aircraft">edit</a>]</div> The advantage of airships over aeroplanes is that <a href="/wiki/Buoyancy" title="Buoyancy">static lift</a> sufficient for flight is generated by the lifting gas and requires no engine power. This was an immense advantage before the middle of <a href="/wiki/World_War_I" title="World War I">World War I</a> and remained an advantage for long-distance or long-duration operations until <a href="/wiki/World_War_II" title="World War II">World War II</a>. Modern concepts for high-altitude airships include <a href="/wiki/Solar_cell" title="Solar cell">photovoltaic cells</a> to reduce the need to land to refuel, thus they can remain in the air until consumables expire. This similarly reduces or eliminates the need to consider variable fuel weight in buoyancy calculations. The disadvantages are that an airship has a very large reference area and comparatively large <a href="/wiki/Drag_coefficient" title="Drag coefficient">drag coefficient</a>, thus a larger drag force compared to that of aeroplanes and even helicopters. Given the large frontal area and wetted surface of an airship, a practical limit is reached around 130–160 kilometres per hour (80–100 mph), only about one-third the typical airspeed of a modern commercial airplane. Thus, airships are used where speed is not critical. The lift capability of an airship is equal to the buoyant force minus the weight of the airship. This assumes standard air-temperature and pressure conditions. Corrections are usually made for water vapor and impurity of lifting gas, as well as percentage of inflation of the gas cells at liftoff.<a href="#cite_note-174">[173]</a> Based on specific lift (lifting force per unit volume of gas), the greatest static lift is provided by hydrogen (11.15 N/m3 or 71 lbf/1000 cu ft) with helium (10.37 N/m3 or 66 lbf/1000 cu ft) a close second.<a href="#cite_note-175">[174]</a> In addition to static lift, an airship can obtain a certain amount of dynamic lift from its engines. Dynamic lift in past airships has been about 10% of the static lift. Dynamic lift allows an airship to "take off heavy" from a runway similar to fixed-wing and rotary-wing aircraft. This requires additional weight in engines, fuel, and landing gear, negating some of the static lift capacity. The altitude at which an airship can fly largely depends on how much lifting gas it can lose due to expansion before <a href="/wiki/Mechanical_equilibrium" title="Mechanical equilibrium">stasis</a> is reached. The ultimate altitude record for a rigid airship was set in 1917 by the L-55 under the command of Hans-Kurt Flemming when he forced the airship to 7,300 m (24,000 ft) attempting to cross France after the "Silent Raid" on London. The L-55 lost lift during the descent to lower altitudes over Germany and crashed due to loss of lift.<a href="#cite_note-176">[175]</a> While such waste of gas was necessary for the survival of airships in the later years of World War I, it was impractical for commercial operations, or operations of helium-filled military airships. The highest flight made by a hydrogen-filled passenger airship was 1,700 m (5,500 ft) on the Graf Zeppelin's around-the-world flight.<a href="#cite_note-177">[176]</a> The greatest disadvantage of the airship is size, which is essential to increasing performance. As size increases, the problems of ground handling increase geometrically.<a href="#cite_note-178">[177]</a> As the German Navy changed from the <a href="/wiki/Zeppelin_P_Class" title="Zeppelin P Class">P class</a> of 1915 with a volume of over 31,000 m3 (1,100,000 cu ft) to the larger <a href="/wiki/Zeppelin_Q_Class" class="mw-redirect" title="Zeppelin Q Class">Q class</a> of 1916, the <a href="/wiki/Zeppelin_R_Class" title="Zeppelin R Class">R class</a> of 1917, and finally the <a href="/w/index.php?title=Zeppelin_W_Class&action=edit&redlink=1" class="new" title="Zeppelin W Class (page does not exist)">W class</a> of 1918, at almost 62,000 m3 (2,200,000 cu ft) ground handling problems reduced the number of days the Zeppelins were able to make patrol flights. This availability declined from 34% in 1915, to 24.3% in 1916 and finally 17.5% in 1918.<a href="#cite_note-179">[178]</a> So long as the <a href="/wiki/Power-to-weight_ratio" title="Power-to-weight ratio">power-to-weight ratios</a> of aircraft engines remained low and <a href="/wiki/Brake_specific_fuel_consumption" class="mw-redirect" title="Brake specific fuel consumption">specific fuel consumption</a> high, the airship had an edge for long-range or -duration operations. As those figures changed, the balance shifted rapidly in the aeroplane's favour. By mid-1917, the airship could no longer survive in a combat situation where the threat was aeroplanes. By the late 1930s, the airship barely had an advantage over the aeroplane on intercontinental over-water flights, and that advantage had vanished by the end of World War II. This is in face-to-face tactical situations. Currently, a <a href="/wiki/High-altitude_airship" class="mw-redirect" title="High-altitude airship">high-altitude airship</a> project is planned to survey hundreds of kilometres as their operation radius, often much farther than the normal engagement range of a military aeroplane.[<a href="/wiki/Wikipedia:Please_clarify" title="Wikipedia:Please clarify">clarification needed</a>] For example, a <a href="/wiki/Radar" title="Radar">radar</a> mounted on a vessel platform 30 m (100 ft) high has radio horizon at 20 km (12 mi) range, while a radar at 18,000 m (59,000 ft) altitude has radio horizon at 480 km (300 mi) range. This is significantly important for detecting low-flying cruise missiles or fighter-bombers. <div class="mw-heading mw-heading2"><h2 id="Safety">Safety</h2>[<a href="/w/index.php?title=Airship&action=edit&section=49" title="Edit section: Safety">edit</a>]</div> The most commonly used lifting gas, helium, is <a href="/wiki/Inert_gas" title="Inert gas">inert</a> and therefore presents no fire risk.<a href="#cite_note-stwertka-180">[179]</a> A series of vulnerability tests were done by the UK Defence Evaluation and Research Agency DERA on a <a href="/wiki/Skyship_600" class="mw-redirect" title="Skyship 600">Skyship 600</a>. Since the internal gas pressure was maintained at only 1–2% above the surrounding air pressure, the vehicle proved highly tolerant to physical damage or to attack by small-arms fire or missiles. Several hundred high-velocity bullets were fired through the hull, and even two hours later the vehicle would have been able to return to base. Ordnance passed through the envelope without causing critical helium loss. The results and related mathematical model have presented in the hypothesis of considering a Zeppelin NT size airship.<a href="#cite_note-181">[180]</a> In all instances of light armament fire evaluated under both test and live conditions, the airship was able to complete its mission and return to base.<a href="#cite_note-182">[181]</a> <div class="mw-heading mw-heading2"><h2 id="Licensing">Licensing</h2>[<a href="/w/index.php?title=Airship&action=edit&section=50" title="Edit section: Licensing">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Pilot_licensing_and_certification" title="Pilot licensing and certification">Pilot licensing and certification</a></div> In the United Kingdom, the basic pilot licence for airships is the PPL(As), or private pilot licence, which requires a minimum of 35 hours instruction on airships.<a href="#cite_note-UK_CAA-183">[182]</a> To fly commercially, an Commercial Pilot Licence (Airships) is required. <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2>[<a href="/w/index.php?title=Airship&action=edit&section=51" title="Edit section: See also">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239009302">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{clear:left;float:left;margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aviacionavion.png/28px-Aviacionavion.png" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aviacionavion.png/42px-Aviacionavion.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aviacionavion.png/56px-Aviacionavion.png 2x" data-file-width="1600" data-file-height="1600" /><a href="/wiki/Portal:Aviation" title="Portal:Aviation">Aviation portal</a></li></ul> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col" style="column-width: 22em;"> <ul><li><a href="/wiki/Airborne_aircraft_carrier" title="Airborne aircraft carrier">Airborne aircraft carrier</a></li> <li><a href="/wiki/Aircruise" title="Aircruise">Aircruise</a></li> <li><a href="/wiki/Airship_hangar" title="Airship hangar">Airship hangar</a></li> <li><a href="/wiki/Barrage_balloon" title="Barrage balloon">Barrage balloon</a></li> <li><a href="/wiki/Conrad_Airship_CA_80" title="Conrad Airship CA 80">Conrad Airship CA 80</a> (1975–1977)</li> <li><a href="/wiki/Evolutionary_Air_and_Space_Global_Laser_Engagement" title="Evolutionary Air and Space Global Laser Engagement">Evolutionary Air and Space Global Laser Engagement</a></li> <li><a href="/wiki/High-altitude_platform_station" title="High-altitude platform station">High-altitude platform station</a></li> <li><a href="/wiki/The_Island_at_the_Top_of_the_World" title="The Island at the Top of the World">Hyperion</a>, fictional airship type.</li> <li><a href="/wiki/List_of_airship_accidents" title="List of airship accidents">List of airship accidents</a></li> <li><a href="/wiki/List_of_British_airships" title="List of British airships">List of British airships</a></li> <li><a href="/wiki/List_of_current_airships_in_the_United_States" title="List of current airships in the United States">List of current airships in the United States</a></li> <li><a href="/wiki/List_of_Zeppelins" title="List of Zeppelins">List of Zeppelins</a></li> <li><a href="/wiki/Mystery_airship" title="Mystery airship">Mystery airship</a></li> <li><a href="/wiki/Stratellite" title="Stratellite">Stratellite</a></li> <li><a href="/wiki/SVAM_CA-80" title="SVAM CA-80">SVAM CA-80</a></li> <li><a href="/wiki/Worldwide_Aeros_Corp" title="Worldwide Aeros Corp">Worldwide Aeros Corp</a></li> <li><a href="/wiki/Zeppelin_mail" title="Zeppelin mail">Zeppelin mail</a></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2>[<a href="/w/index.php?title=Airship&action=edit&section=52" title="Edit section: Notes">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-3"><a href="#cite_ref-3">^</a> A few airships after <a href="/wiki/World_War_II" title="World War II">World War II</a> still used hydrogen. The first British airship to use helium was the <a href="/wiki/Chitty_Bang_Bang_(airship)" title="Chitty Bang Bang (airship)">Chitty Bang Bang</a> of 1967. </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2>[<a href="/w/index.php?title=Airship&action=edit&section=53" title="Edit section: References">edit</a>]</div> <div class="mw-heading mw-heading3"><h3 id="Citations">Citations</h3>[<a href="/w/index.php?title=Airship&action=edit&section=54" title="Edit section: Citations">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.merriam-webster.com/dictionary/airship">"Definition of AIRSHIP"</a>. merriam-webster.com. Retrieved 4 October 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=merriam-webster.com&rft.atitle=Definition+of+AIRSHIP&rft_id=http%3A%2F%2Fwww.merriam-webster.com%2Fdictionary%2Fairship&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.acs.org/content/acs/en/education/whatischemistry/landmarks/heliumnaturalgas.html">"Discovery of Helium in Natural Gas at the University of Kansas"</a>. National Historic Chemical Landmarks. American Chemical Society. Retrieved 2014-02-21.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=National+Historic+Chemical+Landmarks&rft.atitle=Discovery+of+Helium+in+Natural+Gas+at+the+University+of+Kansas&rft_id=http%3A%2F%2Fwww.acs.org%2Fcontent%2Facs%2Fen%2Feducation%2Fwhatischemistry%2Flandmarks%2Fheliumnaturalgas.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-ege-4">^ <a href="#cite_ref-ege_4-0">a</a> <a href="#cite_ref-ege_4-1">b</a> <a href="#cite_ref-ege_4-2">c</a> <a href="#cite_ref-ege_4-3">d</a> Ege (1973). </li> <li id="cite_note-5"><a href="#cite_ref-5">^</a> Mowthorpe, C. E. S. Battlebags, British Airships of the First World War, Phoenix Mill, United Kingdom. Alan Sutton Publishing, 1995, p. xx. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-7509-0989-7" title="Special:BookSources/0-7509-0989-7">0-7509-0989-7</a>. </li> <li id="cite_note-6"><a href="#cite_ref-6">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.etymonline.com/index.php?term=zeppelin">"Online Etymology Dictionary"</a>. EtymOnline.com. Retrieved 2016-09-04.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=EtymOnline.com&rft.atitle=Online+Etymology+Dictionary&rft_id=http%3A%2F%2Fwww.etymonline.com%2Findex.php%3Fterm%3Dzeppelin&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-7"><a href="#cite_ref-7">^</a> <a rel="nofollow" class="external text" href="http://texashistory.unt.edu/ark:/67531/metapth172915/">US patent 467069</a> "Air-ship" referring to a compound aerostat/rotorcraft. </li> <li id="cite_note-8"><a href="#cite_ref-8">^</a> <a href="/wiki/Ezekiel_Airship" title="Ezekiel Airship">Ezekiel Airship</a> (1902) <a rel="nofollow" class="external text" href="http://www.wright-brothers.org/History_Wing/History_of_the_Airplane/History_of_the_Airplane_Intro/History_of_the_Airplane_Intro.htm">wright-brothers.org</a><a rel="nofollow" class="external text" href="http://altereddimensions.net/2012/burrell-cannon-flies-first-airplane">altereddimensions.net</a> "airship" – referring to an HTA aeroplane. </li> <li id="cite_note-9"><a href="#cite_ref-9">^</a> <a rel="nofollow" class="external text" href="http://gustavewhitehead.org/news_journalism/1901_-_flying.html">The Bridgeport Herald, August 18, 1901</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130803021718/http://gustavewhitehead.org/news_journalism/1901_-_flying.html">Archived</a> August 3, 2013, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> – "air ship" referring to Whitehead's aeroplane. </li> <li id="cite_note-10"><a href="#cite_ref-10">^</a> Cooley Airship of 1910, also called the Cooley monoplane.<a rel="nofollow" class="external autonumber" href="http://www.wright-brothers.org/History_Wing/Aviations_Attic/UFOs/UFOs.htm">[1]</a><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120402075442/http://celticowboy.com/Round%20Aircraft%20Designs.htm">"Round Aircraft Designs"</a>. Archived from <a rel="nofollow" class="external text" href="http://celticowboy.com/Round%20Aircraft%20Designs.htm">the original</a> on 2012-04-02. Retrieved 2011-09-07.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Round+Aircraft+Designs&rft_id=http%3A%2F%2Fcelticowboy.com%2FRound%2520Aircraft%2520Designs.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> – a heavier-than-air monoplane. </li> <li id="cite_note-11"><a href="#cite_ref-11">^</a> Frater, A.; The Balloon Factory, Picador (2009), p. 163 – Wright brothers' "airship". </li> <li id="cite_note-12"><a href="#cite_ref-12">^</a> <a rel="nofollow" class="external text" href="http://www.technovelgy.com/ct/content.asp?Bnum=879">George Griffith, The angel of the Revolution, 1893</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140222154830/http://www.technovelgy.com/ct/content.asp?Bnum=879">Archived</a> 2014-02-22 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> – "air-ship", "vessel" referring to a VTOL compound rotorcraft (not clear from the reference if it might be an aerostat hybrid). </li> <li id="cite_note-13"><a href="#cite_ref-13">^</a> <a rel="nofollow" class="external text" href="http://paperspast.natlib.govt.nz/cgi-bin/paperspast?a=d&d=AS19190224.2.104">Auckland Star, 24 February 1919</a> "Ships of the air", "Air yachts" – passenger landplanes large and small </li> <li id="cite_note-14"><a href="#cite_ref-14">^</a> <a rel="nofollow" class="external text" href="http://nla.gov.au/nla.news-article17455790">The Sydney Morning Herald, Monday 11 April 1938</a> – "ship of the airs", "flying-ship", referring to a large flying-boat. </li> <li id="cite_note-15"><a href="#cite_ref-15">^</a> <a rel="nofollow" class="external text" href="http://airandspace.si.edu/exhibitions/america-by-air/online/innovation/innovation16.cfm">Smithsonian, America by air</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140118135217/http://airandspace.si.edu/exhibitions/america-by-air/online/innovation/innovation16.cfm">Archived</a> 2014-01-18 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> "Ships of the Air" referring to Pan Am's Boeing Clipper flying-boat fleet. </li> <li id="cite_note-16"><a href="#cite_ref-16">^</a> Liao, L., & Pasternak, I. (2009). "A review of airship structural research and development". Progress in Aerospace Sciences, 45(4), 83–96. </li> <li id="cite_note-17"><a href="#cite_ref-17">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTuckerman1926" class="citation web cs1">Tuckerman, Louis Bryant Jr. (January 1, 1926). <a rel="nofollow" class="external text" href="https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930091277.pdf">"Inertia Factors of Ellipsoids for Use in Airship Design"</a> (PDF). <a href="/wiki/National_Advisory_Committee_for_Aeronautics" title="National Advisory Committee for Aeronautics">National Advisory Committee for Aeronautics</a> – via ntrs.nasa.gov.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Inertia+Factors+of+Ellipsoids+for+Use+in+Airship+Design&rft.pub=National+Advisory+Committee+for+Aeronautics&rft.date=1926-01-01&rft.aulast=Tuckerman&rft.aufirst=Louis+Bryant+Jr.&rft_id=https%3A%2F%2Fntrs.nasa.gov%2Farchive%2Fnasa%2Fcasi.ntrs.nasa.gov%2F19930091277.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-18"><a href="#cite_ref-18">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.oed.com/;jsessionid=07EA994A2F49A80A15E17252C57AC109?authRejection=true&url=%2Fview%2FEntry%2F3207%3FredirectedFrom%3Daerostat">"Home : Oxford English Dictionary"</a>. Retrieved 2018-01-18.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Home+%3A+Oxford+English+Dictionary&rft_id=http%3A%2F%2Fwww.oed.com%2F%3Bjsessionid%3D07EA994A2F49A80A15E17252C57AC109%3FauthRejection%3Dtrue%26url%3D%252Fview%252FEntry%252F3207%253FredirectedFrom%253Daerostat&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-:0-19">^ <a href="#cite_ref-:0_19-0">a</a> <a href="#cite_ref-:0_19-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFInceTopuzPanayirci1998" class="citation book cs1">Ince, A. Nejat; Topuz, Ercan; Panayirci, Erdal (1998). <a rel="nofollow" class="external text" href="https://archive.org/details/principlesintegr00ince">Principles of Integrated Maritime Surveillance Systems</a>. New York: Springer Science + Business Media, LLC. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/principlesintegr00ince/page/n217">204</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781461374046" title="Special:BookSources/9781461374046"><bdi>9781461374046</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Principles+of+Integrated+Maritime+Surveillance+Systems&rft.place=New+York&rft.pages=204&rft.pub=Springer+Science+%2B+Business+Media%2C+LLC&rft.date=1998&rft.isbn=9781461374046&rft.aulast=Ince&rft.aufirst=A.+Nejat&rft.au=Topuz%2C+Ercan&rft.au=Panayirci%2C+Erdal&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fprinciplesintegr00ince&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-20"><a href="#cite_ref-20">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrewin" class="citation news cs1">Brewin, Bob. <a rel="nofollow" class="external text" href="https://www.computerworld.com/article/2591179/mobile-wireless/giant-aerostats-developed-for-rural-cell-phone-service.html">"Giant Aerostats Developed For Rural Cell Phone Service"</a>. Computerworld. Retrieved 2018-08-29.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Computerworld&rft.atitle=Giant+Aerostats+Developed+For+Rural+Cell+Phone+Service&rft.aulast=Brewin&rft.aufirst=Bob&rft_id=https%3A%2F%2Fwww.computerworld.com%2Farticle%2F2591179%2Fmobile-wireless%2Fgiant-aerostats-developed-for-rural-cell-phone-service.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-21"><a href="#cite_ref-21">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRyanFrater2002" class="citation book cs1">Ryan, Michael; Frater, Michael (2002). <a rel="nofollow" class="external text" href="https://archive.org/details/tacticalcommunic00ryan">Tactical Communications for the Digitized Battlefield</a>. Boston, Massachusetts: Artech House. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/tacticalcommunic00ryan/page/n332">315</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781580533232" title="Special:BookSources/9781580533232"><bdi>9781580533232</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Tactical+Communications+for+the+Digitized+Battlefield&rft.place=Boston%2C+Massachusetts&rft.pages=315&rft.pub=Artech+House&rft.date=2002&rft.isbn=9781580533232&rft.aulast=Ryan&rft.aufirst=Michael&rft.au=Frater%2C+Michael&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Ftacticalcommunic00ryan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-22"><a href="#cite_ref-22">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHandwerk2013" class="citation news cs1">Handwerk, Brian (2013-06-18). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130620173300/http://news.nationalgeographic.com/news/2013/06/130618-google-balloon-wireless-communication-internet-hap-satellite-stratosphere-loon-project/">"Google's Loon Project Puts Balloon Technology in Spotlight"</a>. Archived from <a rel="nofollow" class="external text" href="https://news.nationalgeographic.com/news/2013/06/130618-google-balloon-wireless-communication-internet-hap-satellite-stratosphere-loon-project/">the original</a> on June 20, 2013. Retrieved 2018-08-29.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Google%27s+Loon+Project+Puts+Balloon+Technology+in+Spotlight&rft.date=2013-06-18&rft.aulast=Handwerk&rft.aufirst=Brian&rft_id=https%3A%2F%2Fnews.nationalgeographic.com%2Fnews%2F2013%2F06%2F130618-google-balloon-wireless-communication-internet-hap-satellite-stratosphere-loon-project%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-23"><a href="#cite_ref-23">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEl-Sayed2016" class="citation book cs1">El-Sayed, Ahmed F. (2016). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=kWJBDAAAQBAJ&q=A+blimp+is+a+non-rigid+aerostat&pg=PA3">Fundamentals of Aircraft and Rocket Propulsion</a>. Springer. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781447167969" title="Special:BookSources/9781447167969"><bdi>9781447167969</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Fundamentals+of+Aircraft+and+Rocket+Propulsion&rft.pub=Springer&rft.date=2016&rft.isbn=9781447167969&rft.aulast=El-Sayed&rft.aufirst=Ahmed+F.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DkWJBDAAAQBAJ%26q%3DA%2Bblimp%2Bis%2Ba%2Bnon-rigid%2Baerostat%26pg%3DPA3&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-24"><a href="#cite_ref-24">^</a> Wragg, D; Historical Dictionary of Aviation, History Press (2008) p. 27. </li> <li id="cite_note-piece-25"><a href="#cite_ref-piece_25-0">^</a> Mackinnon, Jim, <a rel="nofollow" class="external text" href="http://www.ohio.com/news/local-news/piece-by-piece-goodyear-s-new-airship-arrives-at-wingfoot-hangar-1.332411">"Piece by piece, Goodyear's new airship arrives at Wingfoot hangar"</a>, September 6, 2012, updated September 7, 2012, <a href="/wiki/Akron_Beacon_Journal" title="Akron Beacon Journal">Akron Beacon Journal</a>, <a href="/wiki/Akron,_Ohio" title="Akron, Ohio">Akron, Ohio</a> (Goodyear blimps' base), retrieved June 28, 2021 </li> <li id="cite_note-26"><a href="#cite_ref-26">^</a> Cf. <a href="/wiki/Zeppelin_NT" title="Zeppelin NT">Zeppelin NT</a>. </li> <li id="cite_note-27"><a href="#cite_ref-27">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFde_Syon2002" class="citation book cs1">de Syon, Guillaume (2002). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=ABW6BoUm9HkC">Zeppelin!: Germany and the airship, 1900–1939</a>. <a href="/wiki/JHU_Press" class="mw-redirect" title="JHU Press">JHU Press</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8018-8634-8" title="Special:BookSources/978-0-8018-8634-8"><bdi>978-0-8018-8634-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Zeppelin%21%3A+Germany+and+the+airship%2C+1900%E2%80%931939&rft.pub=JHU+Press&rft.date=2002&rft.isbn=978-0-8018-8634-8&rft.aulast=de+Syon&rft.aufirst=Guillaume&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DABW6BoUm9HkC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-28"><a href="#cite_ref-28">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHartcup1974" class="citation book cs1"><a href="/wiki/Guy_Hartcup" title="Guy Hartcup">Hartcup, Guy</a> (1974). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=w4FTAAAAMAAJ">The Achievement of the Airship: A History of the Development of Rigid, Semi-rigid, and Non-rigid Airships</a>. <a href="/wiki/David_%26_Charles" title="David & Charles">David & Charles</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7153-6551-9" title="Special:BookSources/978-0-7153-6551-9"><bdi>978-0-7153-6551-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Achievement+of+the+Airship%3A+A+History+of+the+Development+of+Rigid%2C+Semi-rigid%2C+and+Non-rigid+Airships&rft.pub=David+%26+Charles&rft.date=1974&rft.isbn=978-0-7153-6551-9&rft.aulast=Hartcup&rft.aufirst=Guy&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dw4FTAAAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-29"><a href="#cite_ref-29">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBuerge2009" class="citation web cs1">Buerge, B. T. (2009). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160924190844/http://www.enu.kz/repository/2010/AIAA-2010-1014.pdf">"The Suitability of Hybrid vs. Conventional Airships for Persistent Surveillance Missions"</a> (PDF). Unpublished report from Dr. Charles Perkins. Archived from <a rel="nofollow" class="external text" href="http://www.enu.kz/repository/2010/AIAA-2010-1014.pdf">the original</a> (PDF) on 2016-09-24. 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Retrieved December 29, 2020.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Atlanta+Journal-Constitution&rft.atitle=First+in+flight+%E2%80%93+a+case+for+Georgian&rft.date=2012-08-11&rft.aulast=Hendrick&rft.aufirst=Bill&rft_id=https%3A%2F%2Fwww.ajc.com%2Fnews%2Flocal%2Ffirst-flight-case-for-georgian%2FAhRDEUU8Umc13xHA2gVx6I%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-63"><a href="#cite_ref-63">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://pdfpiw.uspto.gov/.piw?PageNum=0&docid=00154654&IDKey=A5B9E6BB217B&HomeUrl=http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2%2526Sect2=HITOFF%2526u=%25252Fnetahtml%25252FPTO%25252Fsearch-adv.htm%2526r=1%2526p=1%2526f=G%2526l=50%2526d=PALL%2526S1=0154,654.PN.%2526OS=PN/154,654%2526RS=PN/154,654">"Patent Images"</a>. uspto.gov. Retrieved 4 October 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=uspto.gov&rft.atitle=Patent+Images&rft_id=http%3A%2F%2Fpdfpiw.uspto.gov%2F.piw%3FPageNum%3D0%26docid%3D00154654%26IDKey%3DA5B9E6BB217B%26HomeUrl%3Dhttp%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%252526Sect2%3DHITOFF%252526u%3D%2525252Fnetahtml%2525252FPTO%2525252Fsearch-adv.htm%252526r%3D1%252526p%3D1%252526f%3DG%252526l%3D50%252526d%3DPALL%252526S1%3D0154%2C654.PN.%252526OS%3DPN%2F154%2C654%252526RS%3DPN%2F154%2C654&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-64"><a href="#cite_ref-64">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://patents.google.com/patent/US154654">"Micajah dyee"</a>. google.com. 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Retrieved 4 October 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=therevivalist.info&rft.atitle=Georgia%3A+First+in+Flight%3F&rft.date=2014-03-09&rft_id=http%3A%2F%2Ftherevivalist.info%2Fgeorgia-first-in-flight-micajah-clark-dyer%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-66"><a href="#cite_ref-66">^</a> July 31, 1875 article in the Gainesville (Georgia) Eagle </li> <li id="cite_note-67"><a href="#cite_ref-67">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.yourbook.com/BookInfo/IP32675-09.asp">"Georgia's Pioneer Aviator, Micajah Clark Dyer – From A Leading Self Publishing Company"</a>. yourbook.com. 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Then-and-Now project, publication January 2018</a> </li> <li id="cite_note-75"><a href="#cite_ref-75">^</a> (2019) AirBike...1897. Ed. by A. B. Akimov and W. J. Welker. Sapphire Publications, US, 342 p. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-62374-015-3" title="Special:BookSources/978-1-62374-015-3">978-1-62374-015-3</a> (Digital edition) <a rel="nofollow" class="external text" href="https://airbike.welweb.org">Free download</a>. Late 1800s work of Dr. Konstantin Dalilewsky to solve the problem of human flight presented for the first time in English. Including reproduction of the original Russian and German 1900 editions. </li> <li id="cite_note-76"><a href="#cite_ref-76">^</a> Niccoli, R. The Book of Flight: From the flying machines of Leonardo da Vinci to the conquest of space, New York, Friedman/Fairfax, 2002, p. 24. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-58663-716-3" title="Special:BookSources/978-1-58663-716-3">978-1-58663-716-3</a> </li> <li id="cite_note-77"><a href="#cite_ref-77">^</a> Toland (1957), pp. 25–37. </li> <li id="cite_note-Christchurch_Star-78"><a href="#cite_ref-Christchurch_Star_78-0">^</a> <a rel="nofollow" class="external text" href="http://paperspast.natlib.govt.nz/cgi-bin/paperspast?a=d&d=TS19031231.2.12&cl=&srpos=0&e=-------10-PubMetaTS-1-byDA---2%2522cashmere+road%2522--">Papers Past – Christchurch Star, 31 December 1903, Ways of Airships (p. 2)</a> </li> <li id="cite_note-79"><a href="#cite_ref-79">^</a> Toland (1957), pp. 49–51. </li> <li id="cite_note-80"><a href="#cite_ref-80">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1"><a rel="nofollow" class="external text" href="http://hemerotecadigital.bne.es/issue.vm?id=0000682851&page=3&search=%22leonardo+torres+quevedo%22&lang=es">"La dirección de globos y un inventor español"</a>. La Época. 1902.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=La+%C3%89poca&rft.atitle=La+direcci%C3%B3n+de+globos+y+un+inventor+espa%C3%B1ol&rft.date=1902&rft_id=http%3A%2F%2Fhemerotecadigital.bne.es%2Fissue.vm%3Fid%3D0000682851%26page%3D3%26search%3D%2522leonardo%2Btorres%2Bquevedo%2522%26lang%3Des&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-Redondo2008-81"><a href="#cite_ref-Redondo2008_81-0">^</a> Francisco A. González Redondo. <a rel="nofollow" class="external text" href="https://www.researchgate.net/publication/348018483_Leonardo_Torres_Quevedo_1902-1908_The_Foundations_for_100_years_of_Airship_designs">Leonardo Torres Quevedo, 1902–1908. The Foundations for 100 years of Airship designs</a> In book: Proceedings of the 7th International Airship Convention, pp. 1–12, Publisher: German Society for Aeronautics and Astronautics (DGLR), October 2008. </li> <li id="cite_note-82"><a href="#cite_ref-82">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFrancisco_A._González_Redondo2019" class="citation web cs1">Francisco A. González Redondo (2019). <a rel="nofollow" class="external text" href="https://www.aend.org/Revistas%20digitales/RevAEND88.pdf">"Leonardo Torres Quevedo: Ingeniero, Matemático, Inventor"</a> (PDF). 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Prabhat Prakashan. pp. 30–32. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-8184305012" title="Special:BookSources/978-8184305012"><bdi>978-8184305012</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Airships+of+War&rft.btitle=Aeroplanes+and+Dirigibles+of+War&rft.pages=30-32&rft.pub=Prabhat+Prakashan&rft.date=2020&rft.isbn=978-8184305012&rft.aulast=Ambrose+Talbot&rft.aufirst=Frederick+Arthur&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dq346DQAAQBAJ%26pg%3DPT30&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-Whale-84"><a href="#cite_ref-Whale_84-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWhale2013" class="citation book cs1">Whale, George (2013). 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Read Books Ltd. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1473391529" title="Special:BookSources/978-1473391529"><bdi>978-1473391529</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Airship+design&rft.btitle=British+Airships+%E2%80%93+Past%2C+Present+And+Future&rft.pub=Read+Books+Ltd&rft.date=2013&rft.isbn=978-1473391529&rft.aulast=Whale&rft.aufirst=George&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DKkN-CgAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-85"><a href="#cite_ref-85">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStarkings" class="citation web cs1">Starkings, Peter. <a rel="nofollow" class="external text" href="http://www.j-aircraft.com/research/jas_jottings/japanese_airships.htm">"Japanese Military Airships 1910–1945"</a>. 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González Redondo. <a rel="nofollow" class="external text" href="https://www.researchgate.net/profile/Francisco-Gonzalez-Redondo/publication/347906296_The_Mooring_Mast_history_and_controversy_Dirigible_The_Journal_of_The_Airship_Heritage_Trust_1753-2175/links/5fe67094299bf14088440363/The-Mooring-Mast-history-and-controversy-Dirigible-The-Journal-of-The-Airship-Heritage-Trust-1753-2175.pdf">The Mooring Mast: History and Controversy</a>, pp. 12–17, The Airship Heritage Trust (1753-2175): No. 69, 2013. </li> <li id="cite_note-87"><a href="#cite_ref-87">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGonzález-RedondoCamplin2015" class="citation book cs1">González-Redondo, F.; Camplin, G. (2015). The Controversial Origins of the Mooring Mast for Airships: An Historical Overview of a Neglected Branch of Aeronautical Technology that has Great Potential for Future Use. <a href="/wiki/International_Committee_for_the_History_of_Technology" title="International Committee for the History of Technology">International Committee for the History of Technology</a>. pp. 81–108.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Controversial+Origins+of+the+Mooring+Mast+for+Airships%3A+An+Historical+Overview+of+a+Neglected+Branch+of+Aeronautical+Technology+that+has+Great+Potential+for+Future+Use&rft.pages=81-108&rft.pub=International+Committee+for+the+History+of+Technology&rft.date=2015&rft.aulast=Gonz%C3%A1lez-Redondo&rft.aufirst=F.&rft.au=Camplin%2C+G.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-88"><a href="#cite_ref-88">^</a> (<a rel="nofollow" class="external text" href="https://www.semanticscholar.org/paper/LEONARDO-TORRES-QUEVEDO%2C-1902-1908.-THE-FOUNDATIONS-Redondo/908ea29044d0bc3879e85f97ecbd0006885d0a1b/figure/7">see Fig.1</a>) </li> <li id="cite_note-LuegerLuftschiff-89"><a href="#cite_ref-LuegerLuftschiff_89-0">^</a> <a href="#Lueger1920">Lueger 1920</a>, pp. 404–412, <a rel="nofollow" class="external text" href="http://www.zeno.org/Lueger-1904/A/Luftschiff">Luftschiff</a> </li> <li id="cite_note-Lig-90"><a href="#cite_ref-Lig_90-0">^</a> <a href="#Lig">Ligugnana, Sandro</a> </li> <li id="cite_note-severodeath-91"><a href="#cite_ref-severodeath_91-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.lookandlearn.com/history-images/M500050/Death-of-the-aeronaut-Auguste-Severo-and-his-mechanic-George-Sache?img=2&search=Sache&bool=phrase">"Death of the aeronaut Auguste Severo and his mechanic George Sache"</a>. lookandlearn.com. Retrieved 4 October 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=lookandlearn.com&rft.atitle=Death+of+the+aeronaut+Auguste+Severo+and+his+mechanic+George+Sache&rft_id=http%3A%2F%2Fwww.lookandlearn.com%2Fhistory-images%2FM500050%2FDeath-of-the-aeronaut-Auguste-Severo-and-his-mechanic-George-Sache%3Fimg%3D2%26search%3DSache%26bool%3Dphrase&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-severo-92"><a href="#cite_ref-severo_92-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20161005121233/http://cabanus.e-monsite.com/pages/les-dirigeables/la-belle-epoque-1890-1905.html">"La belle époque. 1890–1905"</a>. e-monsite.com. Archived from <a rel="nofollow" class="external text" href="http://cabanus.e-monsite.com/pages/les-dirigeables/la-belle-epoque-1890-1905.html">the original</a> on 5 October 2016. Retrieved 4 October 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=e-monsite.com&rft.atitle=La+belle+%C3%A9poque.+1890%E2%80%931905.&rft_id=http%3A%2F%2Fcabanus.e-monsite.com%2Fpages%2Fles-dirigeables%2Fla-belle-epoque-1890-1905.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-93"><a href="#cite_ref-93">^</a> <a rel="nofollow" class="external text" href="http://www.flightglobal.com/pdfarchive/view/1912/1912%20-%200298.html">With the Dirigibles at Tripoli</a><a href="/wiki/Flight_International" title="Flight International">Flight</a> 30 March 1912 </li> <li id="cite_note-94"><a href="#cite_ref-94">^</a> Ventry & Koesnik (1982), p. 85. </li> <li id="cite_note-95"><a href="#cite_ref-95">^</a> Robinson (1973), pp. 126–127. </li> <li id="cite_note-96"><a href="#cite_ref-96">^</a> Robinson 1994, p. 360. </li> <li id="cite_note-97"><a href="#cite_ref-97">^</a> Cole, Christopher and Cheesman, E. F. The Air Defence of Great Britain 1914–1918. London: Putnam, 1984. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-370-30538-8" title="Special:BookSources/0-370-30538-8">0-370-30538-8</a>. p. 449 </li> <li id="cite_note-98"><a href="#cite_ref-98">^</a> Robinson (1994), pp. 340–341. </li> <li id="cite_note-99"><a href="#cite_ref-99">^</a> Higham (1961), p. 111. </li> <li id="cite_note-100"><a href="#cite_ref-100">^</a> Mowthorpe, Ces, Battlebags, Stroud, Gloucs, Allan Sutton Publishing, 1995, p. xxiii. </li> <li id="cite_note-101"><a href="#cite_ref-101">^</a> Patrick Abbott and Nick Walmsley, British Airships in Pictures: An Illustrated History, House of Lochar 1998, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-899863-48-6" title="Special:BookSources/1-899863-48-6">1-899863-48-6</a> (pp. 59–69) </li> <li id="cite_note-102"><a href="#cite_ref-102">^</a> Ventry & Koesnik (1982), p. 97. </li> <li id="cite_note-103"><a href="#cite_ref-103">^</a> Higham (1961), p. 138. </li> <li id="cite_note-Higham_176-104">^ <a href="#cite_ref-Higham_176_104-0">a</a> <a href="#cite_ref-Higham_176_104-1">b</a> Higham (1961), p. 176. </li> <li id="cite_note-105"><a href="#cite_ref-105">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation magazine cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=gtoDAAAAMBAJ&pg=PA819">"Navy's First Dirigible Meets Disaster"</a>. Popular Mechanics. Vol. 25, no. 6. June 1916. p. 819. Retrieved 4 October 2016 – via Google Books.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Popular+Mechanics&rft.atitle=Navy%27s+First+Dirigible+Meets+Disaster&rft.volume=25&rft.issue=6&rft.pages=819&rft.date=1916-06&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DgtoDAAAAMBAJ%26pg%3DPA819&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-106"><a href="#cite_ref-106">^</a> Higham 1961, pp. 222–223. </li> <li id="cite_note-107"><a href="#cite_ref-107">^</a> Swanborough, G. and Bowyers, P. M. United States Navy Aircraft Since 1912. London: Putnam, 1976 (2nd ed.) <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0851778380" title="Special:BookSources/0851778380">0851778380</a>, p. 586 </li> <li id="cite_note-Hnavy-108"><a href="#cite_ref-Hnavy_108-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20021206160908/http://www.history.navy.mil/photos/ac-usn22/z-types/zr1-v.htm">"USS Shenandoah (ZR-1), Airship 1923–1925 -Construction and Christening, 1922–1923"</a>. Naval Historical Center. Archived from <a rel="nofollow" class="external text" href="http://www.history.navy.mil/photos/ac-usn22/z-types/zr1-v.htm">the original</a> on December 6, 2002. Retrieved December 28, 2011.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=USS+Shenandoah+%28ZR-1%29%2C+Airship+1923%E2%80%931925+-Construction+and+Christening%2C+1922%E2%80%931923&rft.pub=Naval+Historical+Center&rft_id=http%3A%2F%2Fwww.history.navy.mil%2Fphotos%2Fac-usn22%2Fz-types%2Fzr1-v.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-109"><a href="#cite_ref-109">^</a> Althoff, William F., USS Los Angeles, Washington DC, Brassey's, 2004, p. 48, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-57488-620-7" title="Special:BookSources/1-57488-620-7">1-57488-620-7</a> </li> <li id="cite_note-110"><a href="#cite_ref-110">^</a> Countryman, Barry, R100 in Canada, Erin, Ontario, Boston Mills, 1982, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-919822-36-3" title="Special:BookSources/0-919822-36-3">0-919822-36-3</a> </li> <li id="cite_note-111"><a href="#cite_ref-111">^</a> Botting, Douglas, Dr. Eckener's Dream Machine. New York: Henry Hold, 2001. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-8050-6458-3" title="Special:BookSources/0-8050-6458-3">0-8050-6458-3</a> </li> <li id="cite_note-112"><a href="#cite_ref-112">^</a> Smith (1965), pp. 171–174. </li> <li id="cite_note-113"><a href="#cite_ref-113">^</a> Smith (1965), pp. 157–161. </li> <li id="cite_note-114"><a href="#cite_ref-114">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLienhard2010" class="citation podcast cs1">Lienhard, John H. (2010). <a rel="nofollow" class="external text" href="https://engines.egr.uh.edu/episode/2571">"Intercity Dirigible Service"</a>. The Engines of Our Ingenuity (Podcast). No. 2571.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Intercity+Dirigible+Service&rft.date=2010&rft.aulast=Lienhard&rft.aufirst=John+H.&rft_id=https%3A%2F%2Fengines.egr.uh.edu%2Fepisode%2F2571&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-115"><a href="#cite_ref-115">^</a> Botting, Douglas, Dr. Eckener's Dream Machine. New York, Henry Hold, 2001, p. 235, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-8050-6458-3" title="Special:BookSources/0-8050-6458-3">0-8050-6458-3</a> </li> <li id="cite_note-116"><a href="#cite_ref-116">^</a> Dick, Harold G., with Robinson, Douglas H., Graf Zeppelin & Hindenburg, Washington DC, Smithsonian Institution Press, 1985, p. 83, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-87474-364-8" title="Special:BookSources/0-87474-364-8">0-87474-364-8</a> </li> <li id="cite_note-117"><a href="#cite_ref-117">^</a> Theodore Richard, Reconsidering the <a href="/wiki/Letter_of_Marque" class="mw-redirect" title="Letter of Marque">Letter of Marque</a>: Utilizing Private Security Providers Against Piracy (April 1, 2010). Public Contract Law Journal, Vol. 39, No. 3, pp. 411–464 at 429 n. 121, Spring 2010. Available at <a rel="nofollow" class="external text" href="http://ssrn.com/abstract=1591039">SSRN</a> </li> <li id="cite_note-FOOTNOTEVaeth199220–21-118"><a href="#cite_ref-FOOTNOTEVaeth199220–21_118-0">^</a> <a href="#CITEREFVaeth1992">Vaeth (1992)</a>, pp. 20–21. </li> <li id="cite_note-Vaeth_1992-119">^ <a href="#cite_ref-Vaeth_1992_119-0">a</a> <a href="#cite_ref-Vaeth_1992_119-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVaeth1992" class="citation book cs1">Vaeth, J. Gordon (1992). Blimps & U-Boats. Annapolis, Maryland: U.S. Naval Institute Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-55750-876-3" title="Special:BookSources/1-55750-876-3"><bdi>1-55750-876-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Blimps+%26+U-Boats&rft.place=Annapolis%2C+Maryland&rft.pub=U.S.+Naval+Institute+Press&rft.date=1992&rft.isbn=1-55750-876-3&rft.aulast=Vaeth&rft.aufirst=J.+Gordon&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-120"><a href="#cite_ref-120">^</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20010612154236/http://www.history.navy.mil/download/lta-08.pdf">U.S. Navy LTA history</a>. </li> <li id="cite_note-121"><a href="#cite_ref-121">^</a> <a rel="nofollow" class="external text" href="http://uboat.net/boats/u134.htm">U-134 history</a>, Uboat.net. </li> <li id="cite_note-122"><a href="#cite_ref-122">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKaiser2011" class="citation magazine cs1">Kaiser, Don (2011). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20150217071129/http://naval-airships.org/resources/documents/NAN_vol93_no2_KShips_feature.pdf">"K-Ships Across the Atlantic"</a> (PDF). Naval Aviation News. Vol. 93, no. 2. pp. 20–23. Archived from <a rel="nofollow" class="external text" href="http://www.naval-airships.org/resources/documents/NAN_vol93_no2_KShips_feature.pdf">the original</a> (PDF) on 2015-02-17. Retrieved 2013-06-19.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Naval+Aviation+News&rft.atitle=K-Ships+Across+the+Atlantic&rft.volume=93&rft.issue=2&rft.pages=20-23&rft.date=2011&rft.aulast=Kaiser&rft.aufirst=Don&rft_id=http%3A%2F%2Fwww.naval-airships.org%2Fresources%2Fdocuments%2FNAN_vol93_no2_KShips_feature.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> <li id="cite_note-123"><a href="#cite_ref-123">^</a> <a rel="nofollow" class="external text" href="http://www.historynet.com/atomic-airships.htm">Atomic Airships</a> by John J. Geoghegan. Originally published in the January 2013 issue of Aviation History magazine. </li> <li id="cite_note-124"><a href="#cite_ref-124">^</a> The Zeppelin in the Atomic Age: The Past, Present, and Future of the Rigid Lighter-Than-Air Aircraft, Kirschner, Edwin J. Published by University of Illinois Press (1957) </li> <li id="cite_note-125"><a href="#cite_ref-125">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJurich1960" class="citation journal cs1">Jurich, Leo (1 January 1960). <a rel="nofollow" class="external text" href="https://doi.org/10.4271/600278">"The Nuclear Powered Airship"</a>. SAE Mobilus. SAE Technical Paper Series. 1. 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SAE Technical Paper; 2018 October 30. </li> <li id="cite_note-182"><a href="#cite_ref-182">^</a> <a rel="nofollow" class="external text" href="http://www.worldskycat.com/images/SkyCat.pdf">High Safety Level (p. 5) and Structural Vulnerability Tests (p. 7)</a>. World Skycat. Retrieved 25 April 2008. </li> <li id="cite_note-UK_CAA-183"><a href="#cite_ref-UK_CAA_183-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.caa.co.uk/general-aviation/pilot-licences/part-fcl-requirements/ppl-spl-bpl-private-pilot-licences/ppl-as-requirements/">"PPL (As) requirements"</a>. CAA.co.uk. United Kingdom Civil Aviation Authority. Retrieved 14 May 2023.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CAA.co.uk&rft.atitle=PPL+%28As%29+requirements&rft_id=https%3A%2F%2Fwww.caa.co.uk%2Fgeneral-aviation%2Fpilot-licences%2Fpart-fcl-requirements%2Fppl-spl-bpl-private-pilot-licences%2Fppl-as-requirements%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"> </li> </ol></div></div> <div class="mw-heading mw-heading3"><h3 id="Bibliography">Bibliography</h3>[<a href="/w/index.php?title=Airship&action=edit&section=55" title="Edit section: Bibliography">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin refbegin-columns references-column-width" style="column-width: 30em"> <ul><li>Althoff, William F., <a rel="nofollow" class="external text" href="https://books.google.com/books?id=uraKiSbbW1YC">USS Los Angeles: The Navy's Venerable Airship and Aviation Technology</a>, 2003, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-57488-620-7" title="Special:BookSources/1-57488-620-7">1-57488-620-7</a></li> <li>Ausrotas, R. A., "Basic Relationships for LTA Technical Analysis," Proceedings of the Interagency Workshop on Lighter-Than-Air Vehicles, Massachusetts Institute of Technology Flight Transportation Library, 1975</li> <li>Archbold, Rich and Ken Marshall, Hindenburg, an Illustrated History, 1994 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-446-51784-4" title="Special:BookSources/0-446-51784-4">0-446-51784-4</a></li> <li>Bailey, D. B., and Rappoport, H. K., Maritime Patrol Airship Study, Naval Air Development Center, 1980</li> <li>Botting, Douglas, Dr. Eckener's Dream Machine. New York Henry Hold and Company, 2001, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-8050-6458-3" title="Special:BookSources/0-8050-6458-3">0-8050-6458-3</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrooks1992" class="citation book cs1">Brooks, Peter W. (1992). Zeppelin: Rigid Airships 1893–1940. Washington: Smithsonian Institution Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-56098-228-4" title="Special:BookSources/1-56098-228-4"><bdi>1-56098-228-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Zeppelin%3A+Rigid+Airships+1893%E2%80%931940&rft.place=Washington&rft.pub=Smithsonian+Institution+Press&rft.date=1992&rft.isbn=1-56098-228-4&rft.aulast=Brooks&rft.aufirst=Peter+W.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrooks2004" class="citation book cs1">Brooks, Peter W. (2004). Zeppelin: Rigid Airships 1893–1940. Putnam Aeronautical Books. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-85177-845-3" title="Special:BookSources/0-85177-845-3"><bdi>0-85177-845-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Zeppelin%3A+Rigid+Airships+1893%E2%80%931940&rft.pub=Putnam+Aeronautical+Books&rft.date=2004&rft.isbn=0-85177-845-3&rft.aulast=Brooks&rft.aufirst=Peter+W.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"></li> <li>Burgess, Charles P., Airship Design, (1927) 2004 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-4102-1173-8" title="Special:BookSources/1-4102-1173-8">1-4102-1173-8</a></li> <li><a href="/wiki/Wilbur_Cross_(author)" title="Wilbur Cross (author)">Cross, Wilbur</a>, Disaster at the Pole, 2002 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-58574-496-4" title="Special:BookSources/1-58574-496-4">1-58574-496-4</a></li> <li>Dick, Harold G., with Robinson, Douglas H., Graf Zeppelin & Hindenburg, Washington, D.C., Smithsonian Institution Press, 1985, ISBN</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="Dooley" class="citation thesis cs1">Dooley, Sean C (2004). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080625092823/http://biblion.epfl.ch/EPFL/theses/2004/2986/EPFL_TH2986_screen.pdf">"Part II: Appendices"</a> (PDF). <a rel="nofollow" class="external text" href="http://biblion.epfl.ch/EPFL/theses/2004/2986/EPFL_TH2986_screen.pdf">The Development of Material-Adapted Structural Form</a> (PDF) (PhD). VD, CH: <a href="/wiki/%C3%89cole_Polytechnique_F%C3%A9d%C3%A9rale_de_Lausanne" title="École Polytechnique Fédérale de Lausanne">École Polytechnique Fédérale de Lausanne</a>. Archived from <a rel="nofollow" class="external text" href="http://biblion.epfl.ch/EPFL/theses/2004/2986/EPFL_TH2986_app_screen.pdf">the original</a> (PDF) on 2008-06-25.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.title=The+Development+of+Material-Adapted+Structural+Form&rft.inst=%C3%89cole+Polytechnique+F%C3%A9d%C3%A9rale+de+Lausanne&rft.date=2004&rft.aulast=Dooley&rft.aufirst=Sean+C&rft_id=http%3A%2F%2Fbiblion.epfl.ch%2FEPFL%2Ftheses%2F2004%2F2986%2FEPFL_TH2986_app_screen.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"></li> <li>Ege, L.; Balloons and Airships, Blandford (1973).</li> <li>Frederick, Arthur, et al., Airship saga: The history of airships seen through the eyes of the men who designed, built, and flew them, 1982, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-7137-1001-2" title="Special:BookSources/0-7137-1001-2">0-7137-1001-2</a></li> <li>Griehl, Manfred and Joachim Dressel, Zeppelin! The German Airship Story, 1990, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-85409-045-3" title="Special:BookSources/1-85409-045-3">1-85409-045-3</a></li> <li>Higham, Robin, The British Rigid Airship, 1908–1931: A study in weapons policy, London, G. T. Foulis, 1961, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/830820">830820</a></li> <li>Keirns, Aaron J, "America's Forgotten Airship Disaster: The Crash of the USS Shenandoah", Howard, Little River Publishing, 1998, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-9647800-5-7" title="Special:BookSources/978-0-9647800-5-7">978-0-9647800-5-7</a>.</li> <li>Khoury, Gabriel Alexander (Editor), Airship Technology (Cambridge Aerospace Series), 2004, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-521-60753-1" title="Special:BookSources/0-521-60753-1">0-521-60753-1</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLeasor2001" class="citation book cs1">Leasor, James (2001) [1957]. The Millionth Chance: The Story of the R.101. London: Stratus Books. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7551-0048-4" title="Special:BookSources/978-0-7551-0048-4"><bdi>978-0-7551-0048-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Millionth+Chance%3A+The+Story+of+the+R.101&rft.place=London&rft.pub=Stratus+Books&rft.date=2001&rft.isbn=978-0-7551-0048-4&rft.aulast=Leasor&rft.aufirst=James&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"></li> <li><style data-mw-deduplicate="TemplateStyles:r1041539562">.mw-parser-output .citation{word-wrap:break-word}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}</style><cite class="citation wikicite" id="Lig">Ligugnana, Sandro <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071011044542/http://www.officineleonardo.com/storia/uk/0001.html">The History — Enrico Formanini and the Officine Leonardo da Vinci</a>, LPVC S.p.A. retrieved on 30 June 2008</cite></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLueger1920" class="citation book cs1 cs1-prop-foreign-lang-source">Lueger, Otto (1920). <a rel="nofollow" class="external text" href="http://www.zeno.org/Lueger-1904">Lexikon der gesamten Technik und ihrer Hilfswissenschaften</a> (in German). Bd1 Stuttgart, Leipzig.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Lexikon+der+gesamten+Technik+und+ihrer+Hilfswissenschaften&rft.pub=Bd1+Stuttgart%2C+Leipzig&rft.date=1920&rft.aulast=Lueger&rft.aufirst=Otto&rft_id=http%3A%2F%2Fwww.zeno.org%2FLueger-1904&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"></li> <li>McKee, Alexander, Ice crash, 1980, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-312-40382-8" title="Special:BookSources/0-312-40382-8">0-312-40382-8</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMeiklejohn1906" class="citation journal cs1">Meiklejohn, Bernard (December 1906). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=3IfNAAAAMAAJ&pg=PA8283">"The Conquest of the Air"</a>. <a href="/wiki/World%27s_Work" class="mw-redirect" title="World's Work">The World's Work: A History of Our Time</a>. XIII: 8283–10. Retrieved 10 July 2009.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+World%27s+Work%3A+A+History+of+Our+Time&rft.atitle=The+Conquest+of+the+Air&rft.volume=XIII&rft.pages=8283-10&rft.date=1906-12&rft.aulast=Meiklejohn&rft.aufirst=Bernard&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D3IfNAAAAMAAJ%26pg%3DPA8283&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"></li> <li>Morgala, Andrzej, Sterowce w II Wojnie Światowej (Airships in the Second World War), Lotnictwo, 1992 (in Polish)</li> <li>Mowthorpe, Ces, Battlebags: British Airships of the First World War, 1995 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-905778-13-8" title="Special:BookSources/0-905778-13-8">0-905778-13-8</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNabben2011" class="citation book cs1">Nabben, Han (2011). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20150904062620/http://www.ballonboek.nl/">Lichter dan Lucht, los van de aarde</a>. Barneveld, Netherlands: BDU Boeken. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-90-8788-151-1" title="Special:BookSources/978-90-8788-151-1"><bdi>978-90-8788-151-1</bdi></a>. Archived from <a rel="nofollow" class="external text" href="http://ballonboek.nl">the original</a> on 2015-09-04.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Lichter+dan+Lucht%2C+los+van+de+aarde&rft.place=Barneveld%2C+Netherlands&rft.pub=BDU+Boeken&rft.date=2011&rft.isbn=978-90-8788-151-1&rft.aulast=Nabben&rft.aufirst=Han&rft_id=http%3A%2F%2Fballonboek.nl&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"></li> <li>Robinson, Douglas H., Giants in the Sky, University of Washington Press, 1973, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-295-95249-0" title="Special:BookSources/0-295-95249-0">0-295-95249-0</a></li> <li>Robinson, Douglas H., The Zeppelin in Combat: A history of the German Naval Airship Division, 1912–1918, Atglen, PA, Shiffer Publications, 1994, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-88740-510-X" title="Special:BookSources/0-88740-510-X">0-88740-510-X</a></li> <li>Smith, Richard K. The Airships Akron & Macon: flying aircraft carriers of the United States Navy, Annapolis MD, US Naval Institute Press, 1965, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-87021-065-5" title="Special:BookSources/978-0-87021-065-5">978-0-87021-065-5</a></li> <li>Shock, James R., Smith, David R., The Goodyear Airships, Bloomington, Illinois, Airship International Press, 2002, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-9711637-0-7" title="Special:BookSources/0-9711637-0-7">0-9711637-0-7</a></li> <li>Sprigg, C., The Airship: Its design, history, operation and future, London 1931, Samson Low, Marston and Company.</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSquier1908" class="citation journal cs1"><a href="/wiki/George_Owen_Squier" title="George Owen Squier">Squier, George Owen</a> (1908). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=gtQWAAAAYAAJ&pg=PA117">"The Present Status of Military Aeronautics"</a>. Annual Report of the Board of Regents of the Smithsonian Institution: 143–144. Retrieved 7 August 2009.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Annual+Report+of+the+Board+of+Regents+of+the+Smithsonian+Institution&rft.atitle=The+Present+Status+of+Military+Aeronautics&rft.pages=143-144&rft.date=1908&rft.aulast=Squier&rft.aufirst=George+Owen&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DgtQWAAAAYAAJ%26pg%3DPA117&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAirship" class="Z3988"></li> <li>Toland, John, Ships in the Sky, New York, Henry Hold; London, Muller, 1957, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/2905721">2905721</a></li> <li>Vaeth, J. Gordon, Blimps & U-Boats, Annapolis, Maryland, US Naval Institute Press, 1992, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-55750-876-3" title="Special:BookSources/1-55750-876-3">1-55750-876-3</a></li> <li>Ventry, Lord; Kolesnik, Eugene, Jane's Pocket Book 7: Airship Development, 1976 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-356-04656-7" title="Special:BookSources/0-356-04656-7">0-356-04656-7</a></li> <li>Ventry, Lord; Koesnik, Eugene M., Airship Saga, Poole, Dorset, Blandford Press, 1982, p. 97 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-7137-1001-2" title="Special:BookSources/0-7137-1001-2">0-7137-1001-2</a></li> <li>Winter, Lumen; Degner, Glenn, Minute Epics of Flight, New York, Grosset & Dunlap, 1933. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/738688">738688</a></li> <li>US War Department, Airship Aerodynamics: Technical Manual, (1941) 2003, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-4102-0614-9" title="Special:BookSources/1-4102-0614-9">1-4102-0614-9</a></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2>[<a 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height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/60px-Wiktionary-logo-en-v2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/80px-Wiktionary-logo-en-v2.svg.png 2x" data-file-width="512" data-file-height="512" /></div> <div class="side-box-text plainlist">Look up <a href="https://en.wiktionary.org/wiki/airship" class="extiw" title="wiktionary:airship">airship</a> or <a href="https://en.wiktionary.org/wiki/dirigible" class="extiw" title="wiktionary:dirigible">dirigible</a> in Wiktionary, the free dictionary.</div></div> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1235681985"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237033735"><div class="side-box side-box-right plainlinks sistersitebox"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"> <div class="side-box-flex"> <div class="side-box-image"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <a href="https://commons.wikimedia.org/wiki/Airship" class="extiw" title="commons:Airship">Airship</a>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=ZjBgEkbnX2I">Should Airships Make a Comeback?</a> – Veritasium YouTube channel</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist 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.navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Aircraft_types_(by_method_of_thrust_and_lift)" title="Template:Aircraft types (by method of thrust and lift)"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Aircraft_types_(by_method_of_thrust_and_lift)" title="Template talk:Aircraft types (by method of thrust and lift)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Aircraft_types_(by_method_of_thrust_and_lift)" title="Special:EditPage/Template:Aircraft types (by method of thrust and lift)"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Types_of_aircraft_by_methods_of_thrust_and_lift" style="font-size:114%;margin:0 4em">Types of <a href="/wiki/Aircraft" title="Aircraft">aircraft</a> by methods of <a href="/wiki/Thrust" title="Thrust">thrust</a> and <a href="/wiki/Lift_(force)" title="Lift (force)">lift</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0;text-align:left"><div style="padding:0 0.25em"> <table class="wikitable" style="width:100%; margin:auto; text-align:center;"> <tbody><tr> <th rowspan="2" style="background-color: #efefef;">  </th> <th style="background-color: #e6e6ff"><a href="/wiki/Aerostat" title="Aerostat">Aerostat</a> </th> <th colspan="3" style="background-color: #e6e6ff"><a href="/wiki/Aircraft#Heavier_than_air_–_aerodynes" title="Aircraft">Aerodyne</a> </th></tr> <tr> <th style="background-color: #e6e6ff">Lift: Lighter than air gas</th> <th style="background-color: #e6e6ff">Lift: Fixed wing</th> <th style="background-color: #e6e6ff">Lift: Unpowered rotor</th> <th style="background-color: #e6e6ff">Lift: Powered rotor </th></tr> <tr> <th style="text-align:left; background-color: #e6e6ff">Unpowered free flight </th> <td>(Free) <a href="/wiki/Balloon_(aeronautics)" title="Balloon (aeronautics)">balloon</a></td> <td><a href="/wiki/Glider_(aircraft)" title="Glider (aircraft)">Glider</a></td> <td><a href="/wiki/Helicopter" title="Helicopter">Helicopter</a>, etc. in <a href="/wiki/Autorotation" title="Autorotation">autorotation</a></td> <td>(None – see note 2) </td></tr> <tr> <th style="text-align:left; background-color: #e6e6ff">Tethered (static or towed) </th> <td><a href="/wiki/Tethered_balloon" title="Tethered balloon">Tethered balloon</a></td> <td><a href="/wiki/Kite" title="Kite">Kite</a></td> <td><a href="/wiki/Rotor_kite" title="Rotor kite">Rotor kite</a></td> <td>(None – see note 2) </td></tr> <tr> <th style="text-align:left; background-color: #e6e6ff">Powered </th> <td><a class="mw-selflink selflink">Airship</a></td> <td><a href="/wiki/Airplane" title="Airplane">Airplane</a>, <a href="/wiki/Ornithopter" title="Ornithopter">ornithopter</a>, etc.</td> <td><a href="/wiki/Autogyro" title="Autogyro">Autogyro</a></td> <td><a href="/wiki/Gyrodyne" title="Gyrodyne">Gyrodyne</a>, <a href="/wiki/Helicopter" title="Helicopter">helicopter</a> </td></tr></tbody></table> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-even hlist" style="width:100%;padding:0;text-align:left"><div style="padding:0 0.25em"> <ul><li>Note 1: A <a href="/wiki/Tiltwing" title="Tiltwing">tiltwing</a> or <a href="/wiki/Tiltrotor" title="Tiltrotor">tiltrotor</a> aircraft functions as an aeroplane during normal (horizontal) flight and as a helicopter during low-speed flight.</li></ul> <ul><li>Note 2: For full-size aircraft with powered rotors the rotor is normally tilted to achieve thrust (e.g. in a helicopter). Some toys (e.g. <a href="/wiki/Balloon_helicopter" title="Balloon helicopter">balloon helicopter</a>) do have a powered rotor with no means to tilt the rotor to produce horizontal thrust.</li></ul> <ul><li>Note 3: <a href="/wiki/Ground-effect_vehicle" title="Ground-effect vehicle">Ground-effect vehicles</a> and <a href="/wiki/Hovercraft" title="Hovercraft">hovercraft</a> are not included in the table, nor are <a href="/wiki/Experimental_aircraft" title="Experimental aircraft">experimental aircraft</a> with novel thrust / lift solutions (e.g. <a href="/wiki/Coleopter" title="Coleopter">coleopter</a>, <a href="/wiki/Rolls-Royce_Thrust_Measuring_Rig" title="Rolls-Royce Thrust Measuring Rig">Flying Bedstead</a>, <a href="/wiki/Avro_Canada_VZ-9_Avrocar" title="Avro Canada VZ-9 Avrocar">Avrocar</a> and <a href="/wiki/Flettner_airplane" title="Flettner airplane">flettner airplane</a>) or balloon-wing hybrids (e.g. <a href="/wiki/Kytoon" title="Kytoon">kytoon</a> and <a href="/wiki/Hybrid_airship" title="Hybrid airship">hybrid airship</a>).</li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"><style data-mw-deduplicate="TemplateStyles:r1038841319">.mw-parser-output .tooltip-dotted{border-bottom:1px dotted;cursor:help}</style><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319"></div><div role="navigation" class="navbox authority-control" aria-label="Navbox" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a>: 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