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class="vector-toc-list"> <li id="toc-F.1" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#F.1"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>F.1</span> </div> </a> <ul id="toc-F.1-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-F.2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#F.2"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>F.2</span> </div> </a> <ul id="toc-F.2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-F.2/2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#F.2/2"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>F.2/2</span> </div> </a> <ul id="toc-F.2/2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-F.2/3" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#F.2/3"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.4</span> <span>F.2/3</span> </div> </a> <ul id="toc-F.2/3-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-F.2/4_Beryl" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#F.2/4_Beryl"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.5</span> <span>F.2/4 Beryl</span> </div> </a> <ul id="toc-F.2/4_Beryl-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-F.3" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#F.3"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.6</span> <span>F.3</span> </div> </a> <ul id="toc-F.3-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-F.5" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#F.5"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7</span> <span>F.5</span> </div> </a> <ul id="toc-F.5-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-F.9_Sapphire" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#F.9_Sapphire"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.8</span> <span>F.9 Sapphire</span> </div> </a> <ul id="toc-F.9_Sapphire-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Engines_on_display" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Engines_on_display"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Engines on display</span> </div> </a> <ul id="toc-Engines_on_display-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Specifications_(F.2/2)" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Specifications_(F.2/2)"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Specifications (F.2/2)</span> </div> </a> <button aria-controls="toc-Specifications_(F.2/2)-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Specifications (F.2/2) subsection</span> </button> <ul id="toc-Specifications_(F.2/2)-sublist" class="vector-toc-list"> <li id="toc-General_characteristics" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#General_characteristics"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>General characteristics</span> </div> </a> <ul id="toc-General_characteristics-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Components" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Components"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Components</span> </div> </a> <ul id="toc-Components-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Performance" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Performance"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>Performance</span> </div> </a> <ul id="toc-Performance-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </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" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </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"><span class="mw-page-title-main">Metropolitan-Vickers F.2</span></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 5 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-5" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">5 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Metropolitan-Vickers_F.2" title="Metropolitan-Vickers F.2 – Czech" lang="cs" hreflang="cs" data-title="Metropolitan-Vickers F.2" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Metropolitan-Vickers_F.2" title="Metropolitan-Vickers F.2 – French" lang="fr" hreflang="fr" data-title="Metropolitan-Vickers F.2" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Metropolitan-Vickers_F.2" title="Metropolitan-Vickers F.2 – Italian" lang="it" hreflang="it" data-title="Metropolitan-Vickers F.2" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%A1%E3%83%88%E3%83%AD%E3%83%B4%E3%82%A3%E3%83%83%E3%82%AF_F.2" title="メトロヴィック F.2 – Japanese" lang="ja" hreflang="ja" data-title="メトロヴィック F.2" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/Metropolitan-Vickers_F.2" title="Metropolitan-Vickers F.2 – Tajik" lang="tg" hreflang="tg" data-title="Metropolitan-Vickers F.2" data-language-autonym="Тоҷикӣ" data-language-local-name="Tajik" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q3855741#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul 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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-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><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></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Metropolitan-Vickers_F.2" title="Special:EditPage/Metropolitan-Vickers F.2">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Metropolitan-Vickers+F.2%22">"Metropolitan-Vickers F.2"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Metropolitan-Vickers+F.2%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Metropolitan-Vickers+F.2%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Metropolitan-Vickers+F.2%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Metropolitan-Vickers+F.2%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Metropolitan-Vickers+F.2%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">March 2012</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <table class="infobox" style="width:25.5em;border-spacing:2px;"> <tbody><tr> <th colspan="2" style="text-align: center; font-size: 125%;">F.2/Beryl </th></tr> <tr> <td colspan="2" style="text-align: center;"><span typeof="mw:File"><a href="/wiki/File:Metropolitan-Vickers_Beryl.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Metropolitan-Vickers_Beryl.jpg/300px-Metropolitan-Vickers_Beryl.jpg" decoding="async" width="300" height="241" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Metropolitan-Vickers_Beryl.jpg/450px-Metropolitan-Vickers_Beryl.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Metropolitan-Vickers_Beryl.jpg/600px-Metropolitan-Vickers_Beryl.jpg 2x" data-file-width="2562" data-file-height="2062" /></a></span> </td></tr> <tr> <td colspan="2" style="border-bottom: 1px solid #aaa;text-align:center;">Beryl engine preserved at <a href="/wiki/Solent_Sky_Museum" class="mw-redirect" title="Solent Sky Museum">Solent Sky Museum</a> </td></tr> <tr> <th>Type </th> <td><a href="/wiki/Turbojet" title="Turbojet">Turbojet</a> </td></tr> <tr> <th>Manufacturer </th> <td><a href="/wiki/Metropolitan-Vickers" title="Metropolitan-Vickers">Metropolitan-Vickers</a> </td></tr> <tr> <th>First run </th> <td>1941 </td></tr> <tr> <th><span class="nowrap">Major applications</span> </th> <td><a href="/wiki/Saunders-Roe_SR.A/1" title="Saunders-Roe SR.A/1">Saunders-Roe SR.A/1</a> </td></tr> </tbody></table> <p>The <b>Metropolitan-Vickers F.2</b> is an early <a href="/wiki/Turbojet_engine" class="mw-redirect" title="Turbojet engine">turbojet engine</a> and the first British design to be based on an <a href="/wiki/Axial_compressor" title="Axial compressor">axial-flow compressor</a>. It was an extremely advanced design for the era,<sup id="cite_ref-Flight,_Sapphire_1-0" class="reference"><a href="#cite_note-Flight,_Sapphire-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> using a nine-stage axial compressor, <a href="/wiki/Annular_combustor" class="mw-redirect" title="Annular combustor">annular combustor</a>, and a two-stage turbine. </p><p>It first powered a <a href="/wiki/Gloster_Meteor" title="Gloster Meteor">Gloster Meteor</a> in November 1943, outperforming contemporary models from <a href="/wiki/Power_Jets" title="Power Jets">Power Jets</a>. Despite this excellent start, it was considered unreliable and did not see use during the war. In the post-war era, newer engine designs provided much higher performance, and interest in the F.2 waned. </p><p>The potential of the engine and the investment did not go to waste, however; the design was passed from <a href="/wiki/Metropolitan-Vickers" title="Metropolitan-Vickers">Metropolitan-Vickers</a> (Metrovick) to <a href="/wiki/Armstrong_Siddeley" title="Armstrong Siddeley">Armstrong Siddeley</a> when Metrovick left the gas turbine business. Armstrong Siddeley produced a larger version as the successful <a href="/wiki/Armstrong_Siddeley_Sapphire" title="Armstrong Siddeley Sapphire">Sapphire</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Development">Development</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=1" title="Edit section: Development"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Alan_Arnold_Griffith" title="Alan Arnold Griffith">Alan Arnold Griffith</a> published a seminal paper in 1926, <i>An Aerodynamic Theory of Turbine Design</i>, that for the first time clearly demonstrated that a <a href="/wiki/Gas_turbine" title="Gas turbine">gas turbine</a> could be used as a practical, and even desirable, aircraft powerplant. The paper started by demonstrating that existing axial compressor designs were "flying stalled" due to their use of flat blades, and dramatic improvements could be made by using <a href="/wiki/Aerofoil" class="mw-redirect" title="Aerofoil">aerofoil</a> designs instead. It went on to outline a complete compressor and turbine design, using the extra exhaust power to drive a second turbine that would power a propeller. In today's terminology, the design was a <a href="/wiki/Turboprop" title="Turboprop">turboprop</a>. </p><p>In order to prove the design, Griffith and several other engineers at the <a href="/wiki/Royal_Aircraft_Establishment" title="Royal Aircraft Establishment">Royal Aircraft Establishment</a> built a testbed example of the compressor in 1928 known as <i>Anne</i>, the machinery being built for them by <a href="/wiki/Fraser_and_Chalmers" class="mw-redirect" title="Fraser and Chalmers">Fraser and Chalmers</a>. After <i>Anne's</i> successful testing they planned to follow this up with a complete engine known as <i>Betty</i>, or B.10. As Betty was designed for test purposes, it was designed to allow the compressor and turbine sections to be run separately. To do this, the exhaust from the compressor was at the "front" of the engine, where it was piped through the combustion section to the "end" of the engine where it entered the turbine. This also meant the driveshaft between the sections was very short. </p><p>In 1929 <a href="/wiki/Frank_Whittle" title="Frank Whittle">Frank Whittle</a>'s thesis on pure jet engines was published, and after speaking to his commanding officer Whittle was taken by the Air Ministry to see Griffith. Griffith was critical of Whittle's work, identifying an error in Whittle's calculations, noting that the <a href="/wiki/Centrifugal_compressor" title="Centrifugal compressor">centrifugal compressor</a> Whittle used would be impractical for aircraft use due to its large frontal area, and that the use of the jet exhaust directly for power would be extremely inefficient at the temperatures given.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Whittle was distraught but was convinced that he should patent the idea anyway. Five years later a group of investors persuaded him to start work on what would be the first working British jet engine. </p><p>Griffith continued development of his own concepts, eventually developing an advanced compressor design using two <a href="/wiki/Contra-rotating" title="Contra-rotating">contra-rotating</a> stages that improved efficiency. His partner, <a href="/wiki/Hayne_Constant" title="Hayne Constant">Hayne Constant</a>, started discussions in 1937 with <a href="/wiki/Manchester" title="Manchester">Manchester</a>-based Metrovick, a maker of <a href="/wiki/Steam_turbine" title="Steam turbine">steam turbines</a>, to produce the new machinery. By 1939 this work had developed several improved versions of the Betty compressor design, which were incorporated into the new <i>Freda</i>. Incidentally, Metrovick had recently merged with <a href="/wiki/British_Thomson-Houston" title="British Thomson-Houston">British Thomson-Houston</a>, another turbine builder who were supporting Whittle's efforts. </p><p>In April 1939, Whittle gave a startling demonstration of his experimental engine, the <a href="/wiki/Power_Jets_WU" title="Power Jets WU">WU</a>, running it for 20 minutes at high power. This led to a rash of contracts to build a production quality design suitable for aircraft use. Metrovick's head of design, David Smith, decided to end development of the turboprop concepts and focus on pure-jets instead. Development had just started when Whittle started building his <a href="/wiki/Power_Jets_W.1" title="Power Jets W.1">W.1</a> design, planning to install one for flight in the <a href="/wiki/Gloster_E.28/39" title="Gloster E.28/39">Gloster E.28/39</a> the next year. </p> <div class="mw-heading mw-heading3"><h3 id="F.1">F.1</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=2" title="Edit section: F.1"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In July 1940 the RAE signed a contract with Metrovick to build a flight-quality pure-turbojet engine based on the Freda turbine. This emerged as the F.1 concept, which was built in several forms, with the first running engine starting on the testbed in late 1941. The design cleared its special-category flight-tests in 1942, and flew for the first time on 29 June 1943 in the open bomb bay of an <a href="/wiki/Avro_Lancaster" title="Avro Lancaster">Avro Lancaster</a>. Compared to the centrifugal-flow Whittle designs, the F.1 was extremely advanced, using a nine-stage axial compressor, <a href="/wiki/Annular_combustor" class="mw-redirect" title="Annular combustor">annular combustion chamber</a>, and a two-stage turbine.<sup id="cite_ref-Flight,_Sapphire_1-1" class="reference"><a href="#cite_note-Flight,_Sapphire-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="F.2">F.2</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=3" title="Edit section: F.2"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Development of the F.2 <a href="/wiki/Turbojet" title="Turbojet">turbojet</a> progressed rapidly, and the engine ran for the first time in November 1941. By that time, there were a number of engines in development based on the Whittle concept, but the F.2 looked considerably more capable than any of them. A flyable version, the F.2/1, received its test rating in 1942. One was fitted to an Avro Lancaster test-bed (the first prototype Lancaster, s/n <i>BT308</i>), mounted at the rear in place of the rear turret, with a single air intake on the top of the fuselage, in front of the twin tail plane. The aircraft first flew on 29 June 1943.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Production quality versions of the F.2 were tested on the F.9/40M (<a href="/wiki/Gloster_Meteor" title="Gloster Meteor">Gloster Meteor</a>) s/n <i>DG204/G</i>, which made its first flight on 13 November 1943. They were installed in underslung <a href="/wiki/Nacelles" class="mw-redirect" title="Nacelles">nacelles</a>, in a manner similar to the engines of the <a href="/wiki/Messerschmitt_Me_262" title="Messerschmitt Me 262">Messerschmitt Me 262</a>.<sup id="cite_ref-Flight,_Sapphire_1-2" class="reference"><a href="#cite_note-Flight,_Sapphire-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>As expected, the F.2 engines were more powerful than the Whittle design, first delivering 1,800 lbf (8,000 N), but soon scaling up to well over 2,000 lbf (8,900 N). Around that time, the <a href="/wiki/Power_Jets_W.2" title="Power Jets W.2">Whittle W.2B</a> was developing only 1,600 lbf (7,100 N). However, there were doubts about the reliability of the F.2, mainly due to problems associated with hot spots building up on the turbine bearing and combustion chamber, which caused warping and fracturing of the turbine inlet nozzles. </p><p>The axial compressor of the F.2 was later offered to <a href="/wiki/Rolls-Royce_Limited" title="Rolls-Royce Limited">Rolls-Royce</a> and used as the initial stage of the <a href="/wiki/Rolls-Royce_Clyde" title="Rolls-Royce Clyde">Rolls-Royce Clyde</a>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="F.2/2"><span id="F.2.2F2"></span>F.2/2</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=4" title="Edit section: F.2/2"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>To address these problems, in August 1942 a minor redesign delivered the F.2/2, which changed the turbine material from Rex 75 to <a href="/wiki/Nimonic" title="Nimonic">Nimonic 75</a>, and lengthened the combustion chamber by 6 inches (150 mm). Thrust was improved to 2,400 lbf (11,000 N) static, but the problems with overheating remained. </p> <div class="mw-heading mw-heading3"><h3 id="F.2/3"><span id="F.2.2F3"></span>F.2/3</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=5" title="Edit section: F.2/3"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Another attempt to solve the overheating problems resulted in the more highly modified F.2/3 during 1943. This version replaced the original annular combustion chamber with can-type burners like those on the Whittle designs. This appears to have solved the problems, raising the thrust to 2,700 lbf (12,000 N) in the process. However, by this time it was decided to move on to a much more powerful version of the engine. </p> <div class="mw-heading mw-heading3"><h3 id="F.2/4_Beryl"><span id="F.2.2F4_Beryl"></span>F.2/4 Beryl</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=6" title="Edit section: F.2/4 Beryl"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Development of the F.2 continued on a version using a ten-stage compressor for additional airflow driven by a single stage turbine.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Flight,_Sapphire_1-3" class="reference"><a href="#cite_note-Flight,_Sapphire-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The new F.2/4 - the <i>Beryl</i> - initially developed 3,250 lbf (14.5 kN) and was test flown in Avro Lancaster Mk.II <a href="/wiki/United_Kingdom_military_aircraft_serials" class="mw-redirect" title="United Kingdom military aircraft serials">s/n</a> <i>LL735</i> before being installed in the <a href="/wiki/Saunders-Roe_SR.A/1" title="Saunders-Roe SR.A/1">Saunders-Roe SR.A/1</a> flying boat fighter. Thrust had already improved to 3,850 lbf (17.1 kN) for the third prototype, and eventually settled at 4,000 lbf (18 kN). </p><p>In comparison, the contemporary <a href="/wiki/Rolls-Royce_Derwent" title="Rolls-Royce Derwent">Derwent</a> 5 developed over 3,600 lbf (16.0 kN) of thrust in its final form. Development of the SR.A/1 ended in 1947, ending development of the Beryl along with it. Nevertheless, later on a Beryl from the SR.A/1 prototype was removed and used by <a href="/wiki/Donald_Campbell" title="Donald Campbell">Donald Campbell</a> for early runs in his famous 1955 <a href="/wiki/Bluebird_K7" title="Bluebird K7">Bluebird K7</a> hydroplane in which he set seven water speed records between 1955 and 1964. </p> <div class="mw-heading mw-heading3"><h3 id="F.3">F.3</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=7" title="Edit section: F.3"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1942 MV started work on thrust augmentation. The resulting Metropolitan-Vickers F.3 was the first British <a href="/wiki/Turbofan_engine" class="mw-redirect" title="Turbofan engine">turbofan engine</a> to be designed, built and tested. It could be said that the F.3 was also the first three-shaft jet engine to be built, although the configuration was completely different from that of the much later <a href="/wiki/Rolls-Royce_RB211" title="Rolls-Royce RB211">Rolls-Royce RB211</a> turbofan series, since the fan was located at the rear of the engine, not unlike that of the <a href="/wiki/General_Electric_CJ805" title="General Electric CJ805">General Electric CJ805</a>-23. Using a stock F.2/2, MV added a separate module to the rear of the engine (directly behind the HP turbine) which comprised contra-rotating LP turbines attached to two contra-rotating fans.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Apart from the first stage nozzle guide vanes, the LP turbine was completely statorless, with four consecutive rotor stages. Rotors one and three drove the front fan clockwise (viewed from the front), whereas the rear fan was driven anticlockwise by rotors two and four. Although the front fan had inlet guide vanes, there were no vanes between the contra-rotating fan rotors or, downstream, any exit guide vanes. The core and bypass streams exhausted through separate coaxial propelling nozzles. </p><p>The project was generally successful, raising static thrust from around 2,400 to 4,000 lbf (11 to 18 kN) (4,600 lbf (20 kN) in 1947). Furthermore, <a href="/wiki/Thrust_specific_fuel_consumption" class="mw-redirect" title="Thrust specific fuel consumption">specific fuel consumption</a> fell from 1.05 to 0.65 lb/(lbf⋅h) (30 to 18 g/(kN⋅s)), which was the true aim of the project. The weight increase for all the extra turbomachinery and ducting was significant, however. A bonus was a marked decrease in noise levels which resulted from the slower, cold air from the fan mixing with the fast, hot exhaust from the gas generator. </p><p>Although the F.3 progressed nicely, development was curtailed by the pressures of war. When the war ended the F.2/2 was no longer current, so some of the ideas were applied to the more up-to-date F.2/4 to produce the Metropolitan-Vickers F.5 propfan. </p> <div class="mw-heading mw-heading3"><h3 id="F.5">F.5</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=8" title="Edit section: F.5"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Following on where the F.3 left off, the F.5 was a version of the F.2/4 with an <a href="/wiki/Propfan" title="Propfan">open rotor</a> (unducted) thrust augmenter added to the end of the jet pipe, somewhat remote from the HP turbine The 5 ft 6 in diameter fixed pitch propellers, which contra-rotated, were driven by a four-stage statorless LP turbine unit, similar to that of the F.3. Static thrust increased from the 3,500lbf of the F.2/2 to in excess of 4,710 lbf (21,000 N), with a corresponding reduction in specific fuel consumption. Relative to the parent turbojet, the weight increase for this prop fan configuration was about 26%, compared to 53% for the F.3 turbofan.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Development was cancelled when they sold their gas turbine business to Armstrong Siddeley in 1946. </p> <div class="mw-heading mw-heading3"><h3 id="F.9_Sapphire">F.9 Sapphire</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=9" title="Edit section: F.9 Sapphire"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .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">Main article: <a href="/wiki/Armstrong_Siddeley_Sapphire" title="Armstrong Siddeley Sapphire">Armstrong Siddeley Sapphire</a></div> <p>Development of the F.2 ended in 1944. Development of the basic concept continued, however, eventually leading to the considerably larger F.9 Sapphire. However, in 1947, Metrovick left jet engine production and their design team moved to <a href="/wiki/Armstrong_Siddeley" title="Armstrong Siddeley">Armstrong Siddeley</a>. The Sapphire matured into a successful design, initially besting the thrust of its Rolls-Royce contemporary, the <a href="/wiki/Rolls-Royce_Avon" title="Rolls-Royce Avon">Avon</a>. Design features of the Metrovick line were worked into Armstrong Siddeley's own line of axial compressor turboprops, although Armstrong Siddeley dropped Metrovick's use of gemstone names for their engines in favour of continuing with animal names, in particular snakes. </p><p>An example of the prototype engine can be found in the <a href="/wiki/Science_Museum_(London)" class="mw-redirect" title="Science Museum (London)">Science Museum</a> Flight Gallery in London. </p> <div class="mw-heading mw-heading2"><h2 id="Engines_on_display">Engines on display</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=10" title="Edit section: Engines on display"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A Metrovick Beryl is on display at the <a href="/wiki/Rolls-Royce_Heritage_Trust" title="Rolls-Royce Heritage Trust">Rolls-Royce Heritage Trust</a> (Derby). </p> <div class="mw-heading mw-heading2"><h2 id="Specifications_(F.2/2)"><span id="Specifications_.28F.2.2F2.29"></span>Specifications (F.2/2)</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=11" title="Edit section: Specifications (F.2/2)"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Metrovic_Beryl.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Metrovic_Beryl.jpg/220px-Metrovic_Beryl.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Metrovic_Beryl.jpg/330px-Metrovic_Beryl.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Metrovic_Beryl.jpg/440px-Metrovic_Beryl.jpg 2x" data-file-width="3648" data-file-height="2736" /></a><figcaption>On display at the Rolls-Royce Heritage Trust (Derby)</figcaption></figure> <p style="font-size: 90%; margin:0; padding: .2em"><i>Data from</i> <i>Wilkinson.</i> <sup id="cite_ref-Wilkinson_8-0" class="reference"><a href="#cite_note-Wilkinson-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></p> <div class="mw-heading mw-heading4"><h4 id="General_characteristics">General characteristics</h4></div> <ul><li><b>Type:</b> axial flow <a href="/wiki/Turbojet" title="Turbojet">turbojet</a></li> <li><b>Length:</b> 159 in (4,039 mm)</li> <li><b>Diameter:</b> 34.9 in (886 mm)</li> <li><b>Dry weight:</b> ~1,500 lb (680 kg)</li></ul> <div class="mw-heading mw-heading4"><h4 id="Components">Components</h4></div> <ul><li><b>Compressor:</b> 9-stage axial flow compressor</li> <li><b><a href="/wiki/Combustor" title="Combustor">Combustors</a>:</b> one <a href="/wiki/Annular_combustor" class="mw-redirect" title="Annular combustor">annular</a> stainless steel combustion chamber</li> <li><b><a href="/wiki/Turbine" title="Turbine">Turbine</a>:</b> two stage axial flow turbine</li> <li><b>Fuel type:</b> <a href="/wiki/Kerosene" title="Kerosene">kerosene</a></li></ul> <div class="mw-heading mw-heading4"><h4 id="Performance">Performance</h4></div> <ul><li><b>Maximum <a href="/wiki/Thrust" title="Thrust">thrust</a>:</b> 2,400 lbf (11 kN) at sea level static, take-off</li> <li><b><a href="/wiki/Overall_pressure_ratio" title="Overall pressure ratio">Overall pressure ratio</a>:</b> 3.5:1</li> <li><b>Air mass flow:</b> ~50.23lb/s (~22.78kg/s)</li> <li><b>Turbine inlet temperature:</b> 1,382 °F (750 °C)</li> <li><b><a href="/wiki/Thrust_specific_fuel_consumption" class="mw-redirect" title="Thrust specific fuel consumption">Specific fuel consumption</a>:</b> 1.07 lb/(lbf⋅h) (30 g/(kN⋅s))</li> <li><b><a href="/wiki/Thrust-to-weight_ratio" title="Thrust-to-weight ratio">Thrust-to-weight ratio</a>:</b> ~1.6</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=12" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p> <b>Comparable engines</b> </p> <ul><li><a href="/wiki/BMW_003" title="BMW 003">BMW 003</a></li> <li><a href="/wiki/General_Electric_J47" title="General Electric J47">General Electric J47</a></li></ul> <p><b>Related lists</b> </p> <ul><li><a href="/wiki/List_of_aircraft_engines" title="List of aircraft engines">List of aircraft engines</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=13" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></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"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Flight,_Sapphire-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Flight,_Sapphire_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Flight,_Sapphire_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Flight,_Sapphire_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Flight,_Sapphire_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.flightglobal.com/pdfarchive/view/1956/1956%20-%200017.html">"Armstrong Siddeley Sapphire"</a>, <i>Flight</i>, 6 January 1956, pp. 17-22.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">Golley <i>Whittle, the true story</i> 1987 pp32-33</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><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://tanks45.tripod.com/Jets45/Histories/Lancaster/Lancaster.htm">"Avro Lancaster"</a>. <i>The Future of Aviation</i><span class="reference-accessdate">. Retrieved <span class="nowrap">15 April</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Future+of+Aviation&rft.atitle=Avro+Lancaster&rft_id=http%3A%2F%2Ftanks45.tripod.com%2FJets45%2FHistories%2FLancaster%2FLancaster.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMetropolitan-Vickers+F.2" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text">"World Encyclopedia of Aero Engines – 5th edition" by <a href="/wiki/Bill_Gunston" title="Bill Gunston">Bill Gunston</a>, Sutton Publishing, 2006, P.195</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><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.research.manchester.ac.uk/portal/files/54530197/FULL_TEXT.PDF">"Metropolitan Vickers, the Gas Turbine, and the State: A SocioTechnical History, 1935-1960"</a> <span class="cs1-format">(PDF)</span><span class="reference-accessdate">. Retrieved <span class="nowrap">29 September</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Metropolitan+Vickers%2C+the+Gas+Turbine%2C+and+the+State%3A+A+SocioTechnical+History%2C+1935-1960&rft_id=https%3A%2F%2Fwww.research.manchester.ac.uk%2Fportal%2Ffiles%2F54530197%2FFULL_TEXT.PDF&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMetropolitan-Vickers+F.2" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><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.flightglobal.com/airspace/media/aeroenginesjetcutaways/metrovick-f3-cutaway-5614.aspx">"Metrovick F3 Cutaway - Pictures & Photos on FlightGlobal Airspace"</a>. Flightglobal.com. 7 November 2007<span class="reference-accessdate">. Retrieved <span class="nowrap">5 March</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Metrovick+F3+Cutaway+-+Pictures+%26+Photos+on+FlightGlobal+Airspace&rft.pub=Flightglobal.com&rft.date=2007-11-07&rft_id=http%3A%2F%2Fwww.flightglobal.com%2Fairspace%2Fmedia%2Faeroenginesjetcutaways%2Fmetrovick-f3-cutaway-5614.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMetropolitan-Vickers+F.2" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.flightglobal.com/pdfarchive/view/1947/1947%20-%200022.html">"Metrovick F.5"</a>, <i>Flight</i>, 2 January 1947, p. 18.</span> </li> <li id="cite_note-Wilkinson-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-Wilkinson_8-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWilkinson1946" class="citation book cs1">Wilkinson, Paul H. (1946). <i>Aircraft Engines of the world 1946</i>. London: Sir Isaac Pitman & Sons. pp. 288–289.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Aircraft+Engines+of+the+world+1946&rft.place=London&rft.pages=288-289&rft.pub=Sir+Isaac+Pitman+%26+Sons&rft.date=1946&rft.aulast=Wilkinson&rft.aufirst=Paul+H.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMetropolitan-Vickers+F.2" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metropolitan-Vickers_F.2&action=edit&section=14" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid 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data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Metrovick_F.2_Beryl" class="extiw" title="commons:Category:Metrovick F.2 Beryl">Metrovick F.2 Beryl</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.flightglobal.com/pdfarchive/view/1946/1946%20-%200812.html">"Metro-Vick Gas Turbine"</a> a 1946 <i>Flight</i> article</li> <li><a rel="nofollow" class="external text" href="http://www.flightglobal.com/pdfarchive/view/1947/1947%20-%200022.html">"Metrovick F.5"</a> a 1947 <i>Flight</i> article on the F.5 propfan</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 ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist 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