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Available in 22 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-22" 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">22 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A8%D9%88%D9%8A%D9%86%D8%BA_%D8%A5%D9%83%D8%B3-51" title="بوينغ إكس-51 – Arabic" lang="ar" hreflang="ar" data-title="بوينغ إكس-51" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Boeing_X-51_Waverider" title="Boeing X-51 Waverider – Czech" lang="cs" hreflang="cs" data-title="Boeing X-51 Waverider" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – German" lang="de" hreflang="de" data-title="Boeing X-51" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – Spanish" lang="es" hreflang="es" data-title="Boeing X-51" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A8%D9%88%D8%A6%DB%8C%D9%86%DA%AF_%D8%A7%DB%8C%DA%A9%D8%B3-%DB%B5%DB%B1" title="بوئینگ ایکس-۵۱ – Persian" lang="fa" hreflang="fa" data-title="بوئینگ ایکس-۵۱" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – French" lang="fr" hreflang="fr" data-title="Boeing X-51" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B3%B4%EC%9E%89_X-51" title="보잉 X-51 – Korean" lang="ko" hreflang="ko" data-title="보잉 X-51" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AC%E0%A5%8B%E0%A4%87%E0%A4%82%E0%A4%97_%E0%A4%8F%E0%A4%95%E0%A5%8D%E0%A4%B8-51_%E0%A4%B5%E0%A5%87%E0%A4%B5%E0%A4%B0%E0%A4%BE%E0%A4%87%E0%A4%A1%E0%A4%B0" title="बोइंग एक्स-51 वेवराइडर – Hindi" lang="hi" hreflang="hi" data-title="बोइंग एक्स-51 वेवराइडर" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Boeing_X-51_Waverider" title="Boeing X-51 Waverider – Croatian" lang="hr" hreflang="hr" data-title="Boeing X-51 Waverider" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – Indonesian" lang="id" hreflang="id" data-title="Boeing X-51" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Boeing_X-51_WaveRider" title="Boeing X-51 WaveRider – Italian" lang="it" hreflang="it" data-title="Boeing X-51 WaveRider" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%91%D7%95%D7%90%D7%99%D7%A0%D7%92_X-51" title="בואינג X-51 – Hebrew" lang="he" hreflang="he" data-title="בואינג X-51" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/X%E2%80%9351_Waverider" title="X–51 Waverider – Hungarian" lang="hu" hreflang="hu" data-title="X–51 Waverider" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – Dutch" lang="nl" hreflang="nl" data-title="Boeing X-51" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/X-51_(%E8%88%AA%E7%A9%BA%E6%A9%9F)" title="X-51 (航空機) – Japanese" lang="ja" hreflang="ja" data-title="X-51 (航空機)" 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-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Boeing X-51" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Boeing_X-51_Waverider" title="Boeing X-51 Waverider – Polish" lang="pl" hreflang="pl" data-title="Boeing X-51 Waverider" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – Russian" lang="ru" hreflang="ru" data-title="Boeing X-51" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – Slovenian" lang="sl" hreflang="sl" data-title="Boeing X-51" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/Boeing_X-51" title="Boeing X-51 – Ukrainian" lang="uk" hreflang="uk" data-title="Boeing X-51" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Boeing_X-51_Waverider" title="Boeing X-51 Waverider – Vietnamese" lang="vi" hreflang="vi" data-title="Boeing X-51 Waverider" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/X-51%E4%B9%98%E6%B3%A2%E8%80%85%E8%A9%A6%E9%A9%97%E6%A9%9F" title="X-51乘波者試驗機 – Chinese" lang="zh" hreflang="zh" data-title="X-51乘波者試驗機" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</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/Q135846#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 class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a 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.ib-aircraft .infobox-above{line-height:1.6em;background-color:#eee}.mw-parser-output .ib-aircraft .infobox-header{border-top:1px solid #a2a9b1;border-bottom:1px solid #a2a9b1;line-height:23px;background-color:#eee}.mw-parser-output .ib-aircraft-caption{padding:0.3em 0 0 0}.mw-parser-output .ib-aircraft-caption-left .infobox-full-data,.mw-parser-output .ib-aircraft-caption-left .infobox-data,.mw-parser-output .ib-aircraft-caption-left .infobox-label{text-align:left}.mw-parser-output .ib-aircraft .mergedbottomrow .infobox-full-data,.mw-parser-output .ib-aircraft .mergedbottomrow .infobox-data,.mw-parser-output .ib-aircraft .mergedbottomrow .infobox-label{border-bottom:1px solid #a2a9b1}@media(min-width:720px){.mw-parser-output .ib-aircraft .infobox-label{width:30%;padding-right:3px}.mw-parser-output .ib-aircraft .infobox-data{width:50%}}</style><table class="infobox ib-aircraft vcard"><tbody><tr><th colspan="2" class="infobox-above">X-51 Waverider</th></tr><tr><td colspan="2" class="infobox-full-data"><span typeof="mw:File"><a href="/wiki/File:X-51A_Waverider.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4b/X-51A_Waverider.jpg/300px-X-51A_Waverider.jpg" decoding="async" width="300" height="252" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4b/X-51A_Waverider.jpg/450px-X-51A_Waverider.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4b/X-51A_Waverider.jpg/600px-X-51A_Waverider.jpg 2x" data-file-width="2100" data-file-height="1763" /></a></span> <div class="ib-aircraft-caption">Artist's concept of X-51A during flight</div></td></tr><tr><th colspan="2" class="infobox-header">General information</th></tr><tr><th scope="row" class="infobox-label">Type</th><td class="infobox-data"><a href="/wiki/Robot" title="Robot">Robotic</a> <a href="/wiki/Technology_demonstrator" class="mw-redirect" title="Technology demonstrator">technology demonstrator</a>, <a href="/wiki/Hypersonic_flight" title="Hypersonic flight">hypersonic</a> test aircraft</td></tr><tr><th scope="row" class="infobox-label">National origin</th><td class="infobox-data">United States</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Aerospace_manufacturer" title="Aerospace manufacturer">Manufacturer</a></th><td class="infobox-data"><a href="/wiki/Boeing" title="Boeing">Boeing</a></td></tr><tr><th scope="row" class="infobox-label">Status</th><td class="infobox-data">Retired<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2024)">citation needed</span></a></i>]</sup></td></tr><tr><th scope="row" class="infobox-label">Primary user</th><td class="infobox-data"><a href="/wiki/United_States_Air_Force" title="United States Air Force">United States Air Force</a></td></tr><tr><th scope="row" class="infobox-label">Number built</th><td class="infobox-data">4<sup id="cite_ref-USAF_X-51_fact_sht_1-0" class="reference"><a href="#cite_note-USAF_X-51_fact_sht-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th colspan="2" class="infobox-header">History</th></tr><tr><th scope="row" class="infobox-label">First flight</th><td class="infobox-data">26 May 2010</td></tr><tr><th scope="row" class="infobox-label">Retired</th><td class="infobox-data">2013<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2024)">citation needed</span></a></i>]</sup></td></tr></tbody></table> <p>The <b>Boeing X-51 Waverider</b> is an <a href="/wiki/Unmanned_aerial_vehicle" title="Unmanned aerial vehicle">unmanned</a> research <a href="/wiki/Scramjet" title="Scramjet">scramjet</a> <a href="/wiki/Experimental_aircraft" title="Experimental aircraft">experimental aircraft</a> for <a href="/wiki/Hypersonic_flight" title="Hypersonic flight">hypersonic flight</a> at Mach 5 (3,300 mph; 5,300 km/h) and an altitude of 70,000 feet (21,000 m). The aircraft was designated X-51 in 2005. It completed its first powered hypersonic flight on 26 May 2010. After two unsuccessful test flights, the X-51 completed a flight of over six minutes and reached speeds of over Mach 5 for 210 seconds on 1 May 2013 for the longest duration powered hypersonic flight. </p><p><i><a href="/wiki/Waverider" title="Waverider">Waverider</a></i> refers in general to aircraft that take advantage of <a href="/wiki/Compression_lift" title="Compression lift">compression lift</a> produced by their own <a href="/wiki/Shock_wave" title="Shock wave">shock waves</a>. The X-51 program was a cooperative effort by the <a href="/wiki/United_States_Air_Force" title="United States Air Force">United States Air Force</a>, <a href="/wiki/DARPA" title="DARPA">DARPA</a>, <a href="/wiki/NASA" title="NASA">NASA</a>, <a href="/wiki/Boeing" title="Boeing">Boeing</a>, and <a href="/wiki/Pratt_%26_Whitney_Rocketdyne" title="Pratt & Whitney Rocketdyne">Pratt & Whitney Rocketdyne</a>. The program was managed by the Aerospace Systems Directorate within the U.S. <a href="/wiki/Air_Force_Research_Laboratory" title="Air Force Research Laboratory">Air Force Research Laboratory</a> (AFRL).<sup id="cite_ref-X-51_Closer_to_Flight_2-0" class="reference"><a href="#cite_note-X-51_Closer_to_Flight-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-New_AFRL_Directorate_3-0" class="reference"><a href="#cite_note-New_AFRL_Directorate-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Design_and_development">Design and development</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boeing_X-51_Waverider&action=edit&section=1" title="Edit section: Design and development"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In the 1990s, the Air Force Research Laboratory (AFRL) began the <a href="/wiki/Scramjet_programs#HyTECH" title="Scramjet programs">HyTECH</a> program for hypersonic <a href="/wiki/Air_propulsion" class="mw-redirect" title="Air propulsion">propulsion</a>. Pratt & Whitney received a contract from the AFRL to develop a <a href="/wiki/Hydrocarbon_fuel" title="Hydrocarbon fuel">hydrocarbon-fueled</a> <a href="/wiki/Scramjet" title="Scramjet">scramjet</a> engine which led to the development of the SJX61 engine. The SJX61 engine was originally meant for the <a href="/wiki/NASA_X-43#X-43C" title="NASA X-43">NASA X-43C</a>, which was eventually canceled. The engine was applied to the AFRL's Scramjet Engine Demonstrator program in late 2003.<sup id="cite_ref-FI_practical_scramjet_4-0" class="reference"><a href="#cite_note-FI_practical_scramjet-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The scramjet flight test vehicle was designated X-51 on 27 September 2005.<sup id="cite_ref-PD-MAP-2005_5-0" class="reference"><a href="#cite_note-PD-MAP-2005-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:X-51A_Waverider_on_B-52_2009.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/X-51A_Waverider_on_B-52_2009.jpg/220px-X-51A_Waverider_on_B-52_2009.jpg" decoding="async" width="220" height="157" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/X-51A_Waverider_on_B-52_2009.jpg/330px-X-51A_Waverider_on_B-52_2009.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e5/X-51A_Waverider_on_B-52_2009.jpg/440px-X-51A_Waverider_on_B-52_2009.jpg 2x" data-file-width="2100" data-file-height="1500" /></a><figcaption>X-51A under the wing of a B-52 at <a href="/wiki/Edwards_Air_Force_Base" title="Edwards Air Force Base">Edwards Air Force Base</a>, July 2009</figcaption></figure> <p>In flight demonstrations, the X-51 is carried by a <a href="/wiki/Boeing_B-52_Stratofortress" title="Boeing B-52 Stratofortress">B-52</a> to an altitude of about 50,000 feet (15 km; 9.5 mi) and then released over the Pacific Ocean.<sup id="cite_ref-AFT_6-0" class="reference"><a href="#cite_note-AFT-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> The X-51 is initially propelled by an <a href="/wiki/MGM-140_ATACMS" class="mw-redirect" title="MGM-140 ATACMS">MGM-140 ATACMS</a> solid rocket booster to approximately Mach 4.5 (3,000 mph; 4,800 km/h). The booster is then jettisoned and the vehicle's Pratt & Whitney Rocketdyne SJY61 scramjet accelerates it to a top flight speed near Mach 6 (4,000 mph; 6,400 km/h).<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><sup id="cite_ref-AFMIL20100520_8-0" class="reference"><a href="#cite_note-AFMIL20100520-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> The X-51 uses <a href="/wiki/JP-7" title="JP-7">JP-7</a> fuel for the SJY61 scramjet, carrying 270 lb (120 kg) on board.<sup id="cite_ref-USAF_X-51_fact_sht_1-1" class="reference"><a href="#cite_note-USAF_X-51_fact_sht-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Applications_for_hypersonic_technology">Applications for hypersonic technology</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boeing_X-51_Waverider&action=edit&section=2" title="Edit section: Applications for hypersonic technology"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>DARPA once viewed X-51 as a stepping stone to <a href="/wiki/DARPA_Falcon_Project#Blackswift" title="DARPA Falcon Project">Blackswift</a>,<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> a planned hypersonic demonstrator which was canceled in October 2008.<sup id="cite_ref-Flt_HTV_3_cancel_10-0" class="reference"><a href="#cite_note-Flt_HTV_3_cancel-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>In May 2013, the U.S. Air Force planned to apply X-51 technology to the High Speed Strike Weapon (HSSW), a missile similar in size to the X-51. The HSSW was expected to fly in 2020 and enter service in the mid-2020s. It was to have a range of 500–600 nautical miles (930–1,110 km), fly at Mach 5–6, and fit on an <a href="/wiki/Lockheed_Martin_F-35_Lightning_II" title="Lockheed Martin F-35 Lightning II">F-35</a> or in the internal bay of a <a href="/wiki/Northrop_Grumman_B-2_Spirit" class="mw-redirect" title="Northrop Grumman B-2 Spirit">B-2</a> bomber.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Testing">Testing</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boeing_X-51_Waverider&action=edit&section=3" title="Edit section: Testing"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:X-51A_Makes_Longest_Scramjet_Flight.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/X-51A_Makes_Longest_Scramjet_Flight.jpg/170px-X-51A_Makes_Longest_Scramjet_Flight.jpg" decoding="async" width="170" height="254" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/X-51A_Makes_Longest_Scramjet_Flight.jpg/255px-X-51A_Makes_Longest_Scramjet_Flight.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9b/X-51A_Makes_Longest_Scramjet_Flight.jpg/340px-X-51A_Makes_Longest_Scramjet_Flight.jpg 2x" data-file-width="2592" data-file-height="3872" /></a><figcaption>The SJX61-2 engine successfully completes ground tests simulating Mach 5 flight conditions.</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Ground_and_unpowered_testing">Ground and unpowered testing</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boeing_X-51_Waverider&action=edit&section=4" title="Edit section: Ground and unpowered testing"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Ground tests of the X-51A began in late 2005.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (September 2016)">citation needed</span></a></i>]</sup> A preliminary version of the X-51, the "Ground Demonstrator Engine No. 2", completed <a href="/wiki/Wind_tunnel" title="Wind tunnel">wind tunnel</a> tests at the NASA <a href="/wiki/Langley_Research_Center" title="Langley Research Center">Langley Research Center</a> on 27 July 2006.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> Testing continued there until a simulated X-51 flight at Mach 5 was successfully completed on 30 April 2007.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> The testing is intended to observe <a href="/wiki/Acceleration" title="Acceleration">acceleration</a> between Mach 4 and Mach 6 and to demonstrate that hypersonic <a href="/wiki/Thrust" title="Thrust">thrust</a> "isn't just luck".<sup id="cite_ref-december15_15-0" class="reference"><a href="#cite_note-december15-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Four captive test flights were initially planned for 2009. However, the first captive flight of the X-51A on a B-52 was conducted on 9 December 2009,<sup id="cite_ref-ride_aboard_B-52_17-0" class="reference"><a href="#cite_note-ride_aboard_B-52-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> with further flights in early 2010.<sup id="cite_ref-getting_ready_19-0" class="reference"><a href="#cite_note-getting_ready-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Powered_flight_testing">Powered flight testing</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boeing_X-51_Waverider&action=edit&section=5" title="Edit section: Powered flight testing"><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:Soaring_high_(8735649458).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Soaring_high_%288735649458%29.jpg/220px-Soaring_high_%288735649458%29.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Soaring_high_%288735649458%29.jpg/330px-Soaring_high_%288735649458%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Soaring_high_%288735649458%29.jpg/440px-Soaring_high_%288735649458%29.jpg 2x" data-file-width="2100" data-file-height="1400" /></a><figcaption>X-51 attached to a B-52H for testing on 1 May 2013</figcaption></figure> <p>The first powered flight of the X-51 was planned for 25 May 2010, but the presence of a <a href="/wiki/Cargo_ship" title="Cargo ship">cargo ship</a> traveling through a portion of the <a href="/wiki/Naval_Air_Station_Point_Mugu" title="Naval Air Station Point Mugu">Naval Air Station Point Mugu</a> Sea Range caused a 24-hour delay.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> The X-51 completed its first powered flight successfully on 26 May 2010. It reached a speed of Mach 5 (3,300 mph; 5,300 km/h), an altitude of 70,000 feet (21,000 m) and flew for over 200 seconds; it did not meet the planned 300 second flight duration, however.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FI_1st_test_23-0" class="reference"><a href="#cite_note-FI_1st_test-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> The test had the longest hypersonic flight time of 140 seconds while under its scramjet power.<sup id="cite_ref-FI_1st_test_23-1" class="reference"><a href="#cite_note-FI_1st_test-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/NASA_X-43" title="NASA X-43">X-43</a> had the previous longest flight burn time of 12 seconds,<sup id="cite_ref-FI_1st_test_23-2" class="reference"><a href="#cite_note-FI_1st_test-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Boeing_1st_flight_24-0" class="reference"><a href="#cite_note-Boeing_1st_flight-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-historic_flight_25-0" class="reference"><a href="#cite_note-historic_flight-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> while setting a new speed record of Mach 9.68. </p><p>Three more test flights were planned and used the same flight <a href="/wiki/Trajectory" title="Trajectory">trajectory</a>.<sup id="cite_ref-historic_flight_25-1" class="reference"><a href="#cite_note-historic_flight-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> Boeing proposed to the Air Force Research Laboratory (AFRL) that two test flights be added to increase the total to six, with flights taking place at four to six week intervals, provided there are no failures.<sup id="cite_ref-Trimble9_26-0" class="reference"><a href="#cite_note-Trimble9-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> </p><p>The second test flight was initially scheduled for 24 March 2011,<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> but was not conducted due to unfavorable test conditions.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> The flight took place on 13 June 2011. However, the flight over the Pacific Ocean ended early due to an inlet <a href="/wiki/Unstart" title="Unstart">unstart</a> event after being boosted to Mach 5 speed. The flight data from the test was being investigated.<sup id="cite_ref-flightglobal-2nd-flight_29-0" class="reference"><a href="#cite_note-flightglobal-2nd-flight-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> A B-52 released the X-51 at an approximate altitude of 50,000 feet (15,000 m). The X-51's scramjet engine lit on <a href="/wiki/Ethylene" title="Ethylene">ethylene</a>, but did not properly transition to JP-7 fuel operation.<sup id="cite_ref-AFAmag2011_30-0" class="reference"><a href="#cite_note-AFAmag2011-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> </p><p>The third test flight took place on 14 August 2012.<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> The X-51 was to make a 300-second (5 minutes) experimental flight at speeds of Mach 5 (3,300 mph; 5,300 km/h).<sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> After separating from its rocket booster, the craft lost control and crashed into the Pacific.<sup id="cite_ref-Weinberger15Aug12_33-0" class="reference"><a href="#cite_note-Weinberger15Aug12-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> The Air Force Research Laboratory (AFRL) determined the problem was the X-51's upper right aerodynamic fin unlocked during flight and became uncontrollable; all four fins are needed for aerodynamic control. The aircraft lost control before the scramjet engine could ignite.<sup id="cite_ref-flightglobal-3rd_34-0" class="reference"><a href="#cite_note-flightglobal-3rd-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> </p><p>On 1 May 2013, the X-51 performed its first fully successful flight test on its fourth test flight. The X-51 and booster detached from a B-52H and was powered to Mach 4.8 (3,200 mph; 5,100 km/h) by the booster rocket. It then separated cleanly from the booster and ignited its own engine. The test aircraft then accelerated to Mach 5.1 (3,400 mph; 5,400 km/h) and flew for 210 seconds until running out of fuel and plunging into the Pacific Ocean off Point Mugu for over six minutes of total flight time; this test was the longest air-breathing <a href="/wiki/Hypersonic" class="mw-redirect" title="Hypersonic">hypersonic</a> flight. Researchers collected telemetry data for 370 seconds of flight. The test signified the completion of the program.<sup id="cite_ref-boeing-4th_36-0" class="reference"><a href="#cite_note-boeing-4th-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-fg20130503_37-0" class="reference"><a href="#cite_note-fg20130503-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-aw20130502_38-0" class="reference"><a href="#cite_note-aw20130502-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> The Air Force Research Laboratory believes the successful flight will serve as research for practical applications of hypersonic flight, such as a missile, reconnaissance, transport, and <a href="/wiki/Air-breathing_engine" class="mw-redirect" title="Air-breathing engine">air-breathing</a> first stage for a space system.<sup id="cite_ref-aw20131002_39-0" class="reference"><a href="#cite_note-aw20131002-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Specifications">Specifications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boeing_X-51_Waverider&action=edit&section=6" title="Edit section: Specifications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p style="font-size: 90%; margin:0;"><i>Data from</i> Boeing,<sup id="cite_ref-40" class="reference"><a href="#cite_note-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> Air Force<sup id="cite_ref-USAF_X-51_fact_sht_1-2" class="reference"><a href="#cite_note-USAF_X-51_fact_sht-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></p> <ul><li><b>Crew:</b> None</li> <li><b>Length:</b> 25 ft 0 in (7.62 m)</li> <li><b>Empty weight:</b> 4,000 lb (1,814 kg)</li> <li><b>Powerplant:</b> 1 × <a href="/wiki/MGM-140_ATACMS" class="mw-redirect" title="MGM-140 ATACMS">MGM-140 ATACMS</a> rocket booster</li> <li><b>Powerplant:</b> 1 × <a href="/wiki/Pratt_%26_Whitney_Rocketdyne" title="Pratt & Whitney Rocketdyne">Pratt & Whitney Rocketdyne</a> SJY61 <a href="/wiki/Scramjet" title="Scramjet">scramjet</a></li></ul> <p><span style="font-size:120%"><b>Performance</b></span> </p> <ul><li><b>Maximum speed:</b> 3,900 mph (6,200 km/h, 3,400 kn)</li> <li><b>Maximum speed:</b> Mach 5.1</li> <li><b>Range:</b> 460 mi (740 km, 400 nmi)</li> <li><b>Service ceiling:</b> 70,000 ft (21,300 m)</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=Boeing_X-51_Waverider&action=edit&section=7" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Boeing_Small_Launch_Vehicle" title="Boeing Small Launch Vehicle">Boeing Small Launch Vehicle</a> concept, includes a hypersonic waverider as the second stage</li> <li><a href="/wiki/Flight_airspeed_record" title="Flight airspeed record">Flight airspeed record</a></li> <li><a href="/wiki/Scramjet_programs" title="Scramjet programs">Scramjet programs</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=Boeing_X-51_Waverider&action=edit&section=8" 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 reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-USAF_X-51_fact_sht-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-USAF_X-51_fact_sht_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-USAF_X-51_fact_sht_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-USAF_X-51_fact_sht_1-2"><sup><i><b>c</b></i></sup></a></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://www.af.mil/AboutUs/FactSheets/Display/tabid/224/Article/104467/x-51a-waverider.aspx">"Factsheets: X-51A Waverider"</a>. U.S. Air Force<span class="reference-accessdate">. Retrieved <span class="nowrap">6 April</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Factsheets%3A+X-51A+Waverider&rft.pub=U.S.+Air+Force&rft_id=http%3A%2F%2Fwww.af.mil%2FAboutUs%2FFactSheets%2FDisplay%2Ftabid%2F224%2FArticle%2F104467%2Fx-51a-waverider.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-X-51_Closer_to_Flight-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-X-51_Closer_to_Flight_2-0">^</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://web.archive.org/web/20080611210339/http://www.boeing.com/news/releases/2007/q2/070601a_nr.html">"Successful Design Review and Engine Test Bring Boeing X-51A Closer to Flight"</a>. Boeing. 1 June 2007. Archived from <a rel="nofollow" class="external text" href="http://www.boeing.com/news/releases/2007/q2/070601a_nr.html">the original</a> on 11 June 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Successful+Design+Review+and+Engine+Test+Bring+Boeing+X-51A+Closer+to+Flight&rft.pub=Boeing&rft.date=2007-06-01&rft_id=http%3A%2F%2Fwww.boeing.com%2Fnews%2Freleases%2F2007%2Fq2%2F070601a_nr.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-New_AFRL_Directorate-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-New_AFRL_Directorate_3-0">^</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://web.archive.org/web/20130309233339/http://www.wpafb.af.mil/news/story.asp?id=123307634">"New AFRL Aerospace Systems Directorate takes shape"</a>. 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Archived from <a rel="nofollow" class="external text" href="http://www.wpafb.af.mil/news/story.asp?id=123307634">the original</a> on 2013-03-09.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=New+AFRL+Aerospace+Systems+Directorate+takes+shape&rft.pub=USAF&rft.date=2012-06-27&rft_id=http%3A%2F%2Fwww.wpafb.af.mil%2Fnews%2Fstory.asp%3Fid%3D123307634&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-FI_practical_scramjet-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-FI_practical_scramjet_4-0">^</a></b></span> <span class="reference-text">Warwick, Graham. <a rel="nofollow" class="external text" href="http://www.flightglobal.com/articles/2007/07/20/215592/x-51a-to-demonstrate-first-practical-scramjet.html">"X-51A to demonstrate first practical scramjet"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100208001749/http://www.flightglobal.com/articles/2007/07/20/215592/x-51a-to-demonstrate-first-practical-scramjet.html">Archived</a> February 8, 2010, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. <i>Flight International</i>, 20 July 2007.</span> </li> <li id="cite_note-PD-MAP-2005-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-PD-MAP-2005_5-0">^</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://web.archive.org/web/20061212072043/http://www.pr.afrl.af.mil/mar/2005/sep2005.pdf">"Propulsion Directorate Monthly Accomplishment Report"</a> <span class="cs1-format">(PDF)</span>. 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Flight Global, 13 October 2008.</span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNorris2013" class="citation news cs1">Norris, Guy (20 May 2013). <a rel="nofollow" class="external text" href="https://aviationweek.com/defense-space/high-speed-strike-weapon-build-x-51-flight">"High-Speed Strike Weapon To Build On X-51 Flight"</a>. <i>Aviation Week & Space Technology</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Aviation+Week+%26+Space+Technology&rft.atitle=High-Speed+Strike+Weapon+To+Build+On+X-51+Flight&rft.date=2013-05-20&rft.aulast=Norris&rft.aufirst=Guy&rft_id=https%3A%2F%2Faviationweek.com%2Fdefense-space%2Fhigh-speed-strike-weapon-build-x-51-flight&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</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.spacedaily.com/reports/PWR_Completes_Mach_5_Testing_Of_Hypersonic_Propulsion_System_999.html">"Completes Mach 5 Testing Of Hypersonic Propulsion System"</a>. Space daily<span class="reference-accessdate">. Retrieved <span class="nowrap">28 July</span> 2008</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Completes+Mach+5+Testing+Of+Hypersonic+Propulsion+System&rft.pub=Space+daily&rft_id=http%3A%2F%2Fwww.spacedaily.com%2Freports%2FPWR_Completes_Mach_5_Testing_Of_Hypersonic_Propulsion_System_999.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.pw.utc.com/media_center/press_releases/2007/04_apr/4-30-2007_7712537.asp">"Pratt & Whitney Rocketdyne's Revolutionary Scramjet Engine Successfully Powers First X-51A Simulated Flight"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120319194421/http://www.pw.utc.com/media_center/press_releases/2007/04_apr/4-30-2007_7712537.asp">Archived</a> March 19, 2012, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Pratt & Whitney Rocketdyne, 30 April 2007.</span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://info.aiaa.org/tac/pc/HYTAPC/Newsletter/April_2008_HyTASP_Newsletter.pdf">"AIAA HyTASP Program Committee Inaugural Newsletter"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110726054847/https://info.aiaa.org/tac/pc/HYTAPC/Newsletter/April_2008_HyTASP_Newsletter.pdf">Archived</a> July 26, 2011, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. AIAA, April 2008.</span> </li> <li id="cite_note-december15-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-december15_15-0">^</a></b></span> <span class="reference-text">Coppinger, Rob. "<a rel="nofollow" class="external text" href="http://www.flightglobal.com/articles/2009/08/06/330670/hypersonic-x-51a-gets-december-launch-date.html">Hypersonic X-51A gets December launch date</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090809185652/http://www.flightglobal.com/articles/2009/08/06/330670/hypersonic-x-51a-gets-december-launch-date.html">Archived</a> August 9, 2009, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>". <i><a href="/wiki/Flight_Global" class="mw-redirect" title="Flight Global">Flight Global</a></i>, 6 August 2009. Retrieved: 29 April 2010.</span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.aviationweek.com/aw/generic/story_generic.jsp?channel=space&id=news/Hyper080509.xml&headline=Hypersonic%20Test%20Flight%20On%20Track">"Hypersonic Test Flight On Track"</a><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged December 2016">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup>. <i>Aviation Week</i>, 5 August 2009. </span> </li> <li id="cite_note-ride_aboard_B-52-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-ride_aboard_B-52_17-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.edwards.af.mil/news/story.asp?id=123181983">"X-51A WaveRider gets first ride aboard B-52"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110607122111/http://www.edwards.af.mil/news/story.asp?id=123181983">Archived</a> June 7, 2011, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Edwards AFB News, 11 December 2009.</span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</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.space-travel.com/reports/X_51A_WaveRider_Gets_First_Ride_Aboard_B_52_999.html">"X-51A WaveRider Gets First Ride Aboard B-52"</a>. Space travel. 18 December 2009.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=X-51A+WaveRider+Gets+First+Ride+Aboard+B-52&rft.pub=Space+travel&rft.date=2009-12-18&rft_id=http%3A%2F%2Fwww.space-travel.com%2Freports%2FX_51A_WaveRider_Gets_First_Ride_Aboard_B_52_999.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-getting_ready-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-getting_ready_19-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.edwards.af.mil/news/story.asp?id=123193363">"X-51 getting ready for first flight"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100308050239/http://www.edwards.af.mil/news/story.asp?id=123193363">Archived</a> March 8, 2010, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. USAF Edwards AFB News, 4 March 2010.</span> </li> <li id="cite_note-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-20">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.afmc.af.mil/news/story.asp?id=123205546">"X-51A flight planned May 25"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100525051747/http://www.afmc.af.mil/news/story.asp?id=123205546">Archived</a> May 25, 2010, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. US Air Force, 20 May 2010.</span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-21">^</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://web.archive.org/web/20100608233059/http://www.af.mil/news/story.asp?id=123206309">"Shipping traffic delays X-51A launch"</a>. USAF. 26 May 2010. Archived from <a rel="nofollow" class="external text" href="http://www.af.mil/news/story.asp?id=123206309">the original</a> on 8 June 2010.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Shipping+traffic+delays+X-51A+launch&rft.pub=USAF&rft.date=2010-05-26&rft_id=http%3A%2F%2Fwww.af.mil%2Fnews%2Fstory.asp%3Fid%3D123206309&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWarwick2010" class="citation web cs1">Warwick, Graham (26 May 2010). <a rel="nofollow" class="external text" href="http://www.aviationweek.com/aw/generic/story.jsp?id=news/awx/2010/05/26/awx_05_26_2010_p0-230043.xml&headline=First%20X-51A%20Hypersonic%20Flight%20Deemed%20Success&channel=defense">"First X-51A Hypersonic Flight Deemed Success"</a>. <i>Aviation Week</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Aviation+Week&rft.atitle=First+X-51A+Hypersonic+Flight+Deemed+Success&rft.date=2010-05-26&rft.aulast=Warwick&rft.aufirst=Graham&rft_id=http%3A%2F%2Fwww.aviationweek.com%2Faw%2Fgeneric%2Fstory.jsp%3Fid%3Dnews%2Fawx%2F2010%2F05%2F26%2Fawx_05_26_2010_p0-230043.xml%26headline%3DFirst%2520X-51A%2520Hypersonic%2520Flight%2520Deemed%2520Success%26channel%3Ddefense&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged March 2016">dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></span> </li> <li id="cite_note-FI_1st_test-23"><span class="mw-cite-backlink">^ <a href="#cite_ref-FI_1st_test_23-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FI_1st_test_23-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-FI_1st_test_23-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCroft2010" class="citation web cs1">Croft, John (27 May 2010). <a rel="nofollow" class="external text" href="http://www.flightglobal.com/news/articles/pictures-342468/">"X-51A Waverider reaches Mach 5 in 140s scramjet flight"</a>. <i>Flight International</i>. Flight global.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Flight+International&rft.atitle=X-51A+Waverider+reaches+Mach+5+in+140s+scramjet+flight&rft.date=2010-05-27&rft.aulast=Croft&rft.aufirst=John&rft_id=http%3A%2F%2Fwww.flightglobal.com%2Fnews%2Farticles%2Fpictures-342468%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-Boeing_1st_flight-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-Boeing_1st_flight_24-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation pressrelease cs1"><a rel="nofollow" class="external text" href="http://boeing.mediaroom.com/index.php?s=43&item=1227">"Boeing X-51A WaveRider Breaks Record in 1st Flight"</a>. <i>Boeing</i> (Press release). 26 May 2010.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Boeing+X-51A+WaveRider+Breaks+Record+in+1st+Flight&rft.date=2010-05-26&rft_id=http%3A%2F%2Fboeing.mediaroom.com%2Findex.php%3Fs%3D43%26item%3D1227&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-historic_flight-25"><span class="mw-cite-backlink">^ <a href="#cite_ref-historic_flight_25-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-historic_flight_25-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160410144856/http://www.wpafb.af.mil/news/story.asp?id=123206524">"X-51 Waverider makes historic hypersonic flight"</a>. <i>US Air Force</i>. 26 May 2010. Archived from <a rel="nofollow" class="external text" href="http://www.wpafb.af.mil/news/story.asp?id=123206524">the original</a> on 2016-04-10.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=US+Air+Force&rft.atitle=X-51+Waverider+makes+historic+hypersonic+flight&rft.date=2010-05-26&rft_id=http%3A%2F%2Fwww.wpafb.af.mil%2Fnews%2Fstory.asp%3Fid%3D123206524&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-Trimble9-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-Trimble9_26-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTrimble2009" class="citation journal cs1">Trimble, Stephen (31 March 2009). "X-51A flight may lead to B version". <i>Flight International</i>: 9.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Flight+International&rft.atitle=X-51A+flight+may+lead+to+B+version&rft.pages=9&rft.date=2009-03-31&rft.aulast=Trimble&rft.aufirst=Stephen&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text">Hennigan, W.J., "Retest Is Set For Hypersonic Craft", <i><a href="/wiki/Los_Angeles_Times" title="Los Angeles Times">Los Angeles Times</a></i>, 24 March 2011, p. B2.</span> </li> <li id="cite_note-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-28">^</a></b></span> <span class="reference-text">Croft, John. <a rel="nofollow" class="external text" href="http://www.flightglobal.com/articles/2011/03/25/354798/air-force-launches-mission-opts-not-to-drop-x-51a.html">"Air Force launches mission, opts not to drop X-51A"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110326220326/http://www.flightglobal.com/articles/2011/03/25/354798/air-force-launches-mission-opts-not-to-drop-x-51a.html">Archived</a> March 26, 2011, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. <i>Flight International</i>, 25 March 2011.</span> </li> <li id="cite_note-flightglobal-2nd-flight-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-flightglobal-2nd-flight_29-0">^</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.flightglobal.com/news/articles/second-x-51-hypersonic-flight-ends-prematurely-358056/">"Second X-51 hypersonic flight ends prematurely"</a>. <i>Flight International</i>. Flightglobal. 15 June 2011.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Flight+International&rft.atitle=Second+X-51+hypersonic+flight+ends+prematurely&rft.date=2011-06-15&rft_id=https%3A%2F%2Fwww.flightglobal.com%2Fnews%2Farticles%2Fsecond-x-51-hypersonic-flight-ends-prematurely-358056%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-AFAmag2011-30"><span class="mw-cite-backlink"><b><a href="#cite_ref-AFAmag2011_30-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMehuron2011" class="citation journal cs1">Mehuron, Tamar A (August 2011). <a rel="nofollow" class="external text" href="http://www.airforcemag.com/MagazineArchive/Documents/2011/August%202011/0811world.pdf">"Air Force World, Second X-51 Test Cut Short"</a> <span class="cs1-format">(PDF)</span>. <i>Air Force Magazine</i>. <b>94</b> (8): 17<span class="reference-accessdate">. Retrieved <span class="nowrap">4 August</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Air+Force+Magazine&rft.atitle=Air+Force+World%2C+Second+X-51+Test+Cut+Short&rft.volume=94&rft.issue=8&rft.pages=17&rft.date=2011-08&rft.aulast=Mehuron&rft.aufirst=Tamar+A&rft_id=http%3A%2F%2Fwww.airforcemag.com%2FMagazineArchive%2FDocuments%2F2011%2FAugust%25202011%2F0811world.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-31">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShachtman2012" class="citation journal cs1">Shachtman, Noah (August 2012). <a rel="nofollow" class="external text" href="https://www.wired.com/dangerroom/2012/08/mach-5-missile/#more-89143">"It's do or die for Mach 5 Missile"</a>. <i>Danger Room</i><span class="reference-accessdate">. Retrieved <span class="nowrap">14 August</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Danger+Room&rft.atitle=It%27s+do+or+die+for+Mach+5+Missile&rft.date=2012-08&rft.aulast=Shachtman&rft.aufirst=Noah&rft_id=https%3A%2F%2Fwww.wired.com%2Fdangerroom%2F2012%2F08%2Fmach-5-missile%2F%23more-89143&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-32">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="http://www.nydailynews.com/news/national/hypersonic-plane-fly-new-york-los-angeles-hour-article-1.1135917">"Hypersonic plane fly New York–Los Angeles in an hour"</a>. NY daily news.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Hypersonic+plane+fly+New+York%E2%80%93Los+Angeles+in+an+hour&rft_id=http%3A%2F%2Fwww.nydailynews.com%2Fnews%2Fnational%2Fhypersonic-plane-fly-new-york-los-angeles-hour-article-1.1135917&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-Weinberger15Aug12-33"><span class="mw-cite-backlink"><b><a href="#cite_ref-Weinberger15Aug12_33-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWeinberger2012" class="citation news cs1">Weinberger, Sharon (15 August 2012). <a rel="nofollow" class="external text" href="https://www.bbc.com/future/story/20120815-hypersonic-ambitions-fall-short">"X-51 Waverider: Hypersonic jet ambitions fall short"</a>. BBC<span class="reference-accessdate">. Retrieved <span class="nowrap">15 August</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=X-51+Waverider%3A+Hypersonic+jet+ambitions+fall+short&rft.date=2012-08-15&rft.aulast=Weinberger&rft.aufirst=Sharon&rft_id=http%3A%2F%2Fwww.bbc.com%2Ffuture%2Fstory%2F20120815-hypersonic-ambitions-fall-short&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-flightglobal-3rd-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-flightglobal-3rd_34-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMajumdar,_Dave2012" class="citation news cs1">Majumdar, Dave (15 August 2012). <a rel="nofollow" class="external text" href="http://www.flightglobal.com/news/articles/x-51a-waverider-test-flight-ends-in-failure-375529/">"X-51A Waverider test flight ends in failure"</a>. Flight International<span class="reference-accessdate">. Retrieved <span class="nowrap">15 August</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=X-51A+Waverider+test+flight+ends+in+failure&rft.date=2012-08-15&rft.au=Majumdar%2C+Dave&rft_id=http%3A%2F%2Fwww.flightglobal.com%2Fnews%2Farticles%2Fx-51a-waverider-test-flight-ends-in-failure-375529%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></span> </li> <li id="cite_note-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-35">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.flightglobal.com/news/articles/august-failure-of-boeing-x-51-likely-due-to-fin-resonance-378080/">"August failure of Boeing X-51 likely due to fin, resonance"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20161014135102/http://www.flightglobal.com/news/articles/august-failure-of-boeing-x-51-likely-due-to-fin-resonance-378080/">Archived</a> October 14, 2016, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Flightglobal.com, 25 October 2012.</span> </li> <li id="cite_note-boeing-4th-36"><span class="mw-cite-backlink"><b><a href="#cite_ref-boeing-4th_36-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://boeing.mediaroom.com/index.php?s=20295&item=128669">"Boeing X-51A WaveRider Sets Record with Successful 4th Flight"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304052913/http://boeing.mediaroom.com/index.php?s=20295&item=128669">Archived</a> March 4, 2016, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Boeing, 3 May 2013.</span> </li> <li id="cite_note-fg20130503-37"><span class="mw-cite-backlink"><b><a href="#cite_ref-fg20130503_37-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.flightglobal.com/news/articles/hypersonic-x-51-programme-ends-in-success-385481/">"Hypersonic X-51 programme ends in success"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20161011073942/http://www.flightglobal.com/news/articles/hypersonic-x-51-programme-ends-in-success-385481/">Archived</a> October 11, 2016, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Flight International, 3 May 2013.</span> </li> <li id="cite_note-aw20130502-38"><span class="mw-cite-backlink"><b><a href="#cite_ref-aw20130502_38-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://aviationweek.com/defense/x-51a-waverider-achieves-goal-final-flight">"X-51A Waverider Achieves Hypersonic Goal On Final Flight"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160412141711/http://aviationweek.com/defense/x-51a-waverider-achieves-goal-final-flight">Archived</a> April 12, 2016, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Aviation Week, 2 May 2013.</span> </li> <li id="cite_note-aw20131002-39"><span class="mw-cite-backlink"><b><a href="#cite_ref-aw20131002_39-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.aviationweek.com/Article/PrintArticle.aspx?id=/article-xml/AW_05_20_2013_p24-579062.xml&p=1&printView=true">"High-Speed Strike Weapon To Build On X-51 Flight"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140104023933/http://www.aviationweek.com/Article/PrintArticle.aspx?id=%2Farticle-xml%2FAW_05_20_2013_p24-579062.xml&p=1&printView=true">Archived</a> January 4, 2014, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Aviation Week, 20 May 2013.</span> </li> <li id="cite_note-40"><span class="mw-cite-backlink"><b><a href="#cite_ref-40">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.boeing.com/defense-space/military/waverider/docs/X-51A_overview.pdf">"X-51A Waverider Backgrounder"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120906233323/http://www.boeing.com/defense-space/military/waverider/docs/X-51A_overview.pdf">Archived</a> September 6, 2012, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Boeing, September 2012.</span> </li> </ol></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=Boeing_X-51_Waverider&action=edit&section=9" 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 #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><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" /></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:Boeing_X-51" class="extiw" title="commons:Category:Boeing X-51">Boeing X-51</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.af.mil/AboutUs/FactSheets/Display/tabid/224/Article/104467/x-51a-waverider.aspx">X-51 fact sheet on USAF site</a></li> <li><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/20121114010656/http://www.boeing.com/defense-space/military/waverider/index.html">"WaveRider page on Boeing.com"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.boeing.com/defense-space/military/waverider/index.html">the original</a> on 14 November 2012.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=WaveRider+page+on+Boeing.com&rft_id=http%3A%2F%2Fwww.boeing.com%2Fdefense-space%2Fmilitary%2Fwaverider%2Findex.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoeing+X-51+Waverider" class="Z3988"></span></li> <li><a rel="nofollow" class="external text" href="http://www.flightglobal.com/articles/2009/03/26/324373/afrl-mulls-adding-scope-to-x-51a-waverider-hypersonic.html">"AFRL mulls adding scope to X-51A Waverider hypersonic tests"</a>. Flight International, March 2009.</li> <li><a rel="nofollow" class="external text" href="http://www.aviationweek.com/search/AvnowSearchResult.do?reference=xml/awst_xml/2007/05/07/AW_05_07_2007_p93-01.xml&searchAction=display_result">"Pratt & Whitney Rocketdyne Scramjet Excels in USAF Tests"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20220405200929/http://www.aviationweek.com/search/AvnowSearchResult.do?reference=xml%2Fawst_xml%2F2007%2F05%2F07%2FAW_05_07_2007_p93-01.xml&searchAction=display_result">Archived</a> 2022-04-05 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Aviation Week - subscription</li> <li><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=a6PXTYO2Bx0">YouTube video of FoxNews report, preceding test flight</a></li> <li><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=0qGNEmDMVDU">YouTube video of test flight, shot from NASA chase plane</a></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 dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist 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P-29">XF7B</a></li> <li><a href="/wiki/Boeing_XF8B" title="Boeing XF8B">XF8B</a></li> <li><a href="/wiki/Boeing_XP-4" title="Boeing XP-4">XP-4</a></li> <li><a href="/wiki/Boeing_XP-7" title="Boeing XP-7">XP-7</a></li> <li><a href="/wiki/Boeing_XP-8" title="Boeing XP-8">XP-8</a></li> <li><a href="/wiki/Boeing_XP-9" title="Boeing XP-9">XP-9</a></li> <li><a href="/wiki/Boeing_P-12" title="Boeing P-12">P-12</a></li> <li><a href="/wiki/Boeing_XP-15" title="Boeing XP-15">XP-15</a></li> <li><a href="/wiki/Boeing_P-26_Peashooter" title="Boeing P-26 Peashooter">P-26</a></li> <li><a href="/wiki/Boeing_P-29" title="Boeing P-29">P-29</a></li> <li><a href="/wiki/Boeing_P-29" title="Boeing P-29">XP-32</a></li> <li><a href="/wiki/TFX_Program" title="TFX Program">818</a></li> <li><a href="/wiki/McDonnell_Douglas_F-15E_Strike_Eagle" title="McDonnell Douglas F-15E Strike Eagle">F-15E</a></li> <li><a href="/wiki/Boeing_F-15EX_Eagle_II" title="Boeing F-15EX Eagle II">F-15EX</a></li> <li><a href="/wiki/Lockheed_YF-22" title="Lockheed YF-22">YF-22</a></li> <li><a href="/wiki/Lockheed_Martin_F-22_Raptor" title="Lockheed Martin F-22 Raptor">F-22</a></li> <li><a href="/wiki/McDonnell_Douglas_AV-8B_Harrier_II" title="McDonnell Douglas AV-8B Harrier II">AV-8B</a></li> <li><a href="/wiki/Boeing_F/A-18E/F_Super_Hornet" title="Boeing F/A-18E/F Super Hornet">F/A-18E/F</a></li> <li><a href="/wiki/Boeing_EA-18G_Growler" title="Boeing EA-18G Growler">EA-18G</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Bombers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_YB-9" title="Boeing YB-9">YB-9</a></li> <li><a href="/wiki/Boeing_XB-15" title="Boeing XB-15">XB-15</a></li> <li><a href="/wiki/Boeing_B-17_Flying_Fortress" title="Boeing B-17 Flying Fortress">B-17</a></li> <li><a href="/wiki/Boeing_Y1B-20" title="Boeing Y1B-20">Y1B-20</a></li> <li><a href="/wiki/Boeing_B-29_Superfortress" title="Boeing B-29 Superfortress">B-29</a></li> <li><a href="/wiki/Boeing_XB-38_Flying_Fortress" title="Boeing XB-38 Flying Fortress">XB-38</a></li> <li><a href="/wiki/Boeing_XB-39_Superfortress" title="Boeing XB-39 Superfortress">XB-39</a></li> <li><a href="/wiki/Boeing_YB-40_Flying_Fortress" title="Boeing YB-40 Flying Fortress">YB-40</a></li> <li><a href="/wiki/Boeing_B-50_Superfortress" title="Boeing B-50 Superfortress">XB-44</a></li> <li><a href="/wiki/Boeing_B-47_Stratojet" title="Boeing B-47 Stratojet">B-47</a></li> <li><a href="/wiki/Boeing_B-50_Superfortress" title="Boeing B-50 Superfortress">B-50</a></li> <li><a href="/wiki/Boeing_B-52_Stratofortress" title="Boeing B-52 Stratofortress">B-52</a></li> <li><a href="/wiki/Boeing_B-54" title="Boeing B-54">B-54</a></li> <li><a href="/wiki/Boeing_XB-55" title="Boeing XB-55">XB-55</a></li> <li><a href="/wiki/Boeing_XB-56" title="Boeing XB-56">XB-56</a></li> <li><a href="/wiki/Boeing_XB-59" title="Boeing XB-59">XB-59</a></li> <li><a href="/wiki/Rockwell_B-1_Lancer" title="Rockwell B-1 Lancer">B-1</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Piston-engined transports</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_247" title="Boeing 247">C-73</a></li> <li><a href="/wiki/Boeing_307_Stratoliner" title="Boeing 307 Stratoliner">C-75</a></li> <li><a href="/wiki/Boeing_C-97_Stratofreighter" title="Boeing C-97 Stratofreighter">C-97</a></li> <li><a href="/wiki/Boeing_314_Clipper" title="Boeing 314 Clipper">C-98</a></li> <li><a href="/wiki/Boeing_XB-15" title="Boeing XB-15">XC-105</a></li> <li><a href="/wiki/Boeing_C-108_Flying_Fortress" title="Boeing C-108 Flying Fortress">C-108</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Jet transports</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_C-135_Stratolifter" title="Boeing C-135 Stratolifter">C-135</a></li> <li><a href="/wiki/Boeing_C-137_Stratoliner" title="Boeing C-137 Stratoliner">C-137</a></li> <li><a href="/wiki/Boeing_CC-137" title="Boeing CC-137">CC-137</a></li> <li><a href="/wiki/Boeing_YC-14" title="Boeing YC-14">YC-14</a></li> <li><a href="/wiki/Boeing_C-17_Globemaster_III" title="Boeing C-17 Globemaster III">C-17</a></li> <li><a href="/wiki/Boeing_727" title="Boeing 727">C-22</a></li> <li><a href="/wiki/Boeing_VC-25" title="Boeing VC-25">VC-25</a></li> <li><a href="/wiki/Boeing_C-32" title="Boeing C-32">C-32</a></li> <li><a href="/wiki/Boeing_C-40_Clipper" title="Boeing C-40 Clipper">C-40</a></li> <li><a href="/wiki/Boeing_T-43" title="Boeing T-43">CT-43</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Tanker-transports</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_KB-29_Superfortress" title="Boeing KB-29 Superfortress">KB-29</a></li> <li><a href="/wiki/Boeing_B-50_Superfortress" title="Boeing B-50 Superfortress">KB-50</a></li> <li><a href="/wiki/Boeing_KC-97_Stratofreighter" title="Boeing KC-97 Stratofreighter">KC-97</a></li> <li><a href="/wiki/Boeing_KC-135_Stratotanker" title="Boeing KC-135 Stratotanker">KC-135</a></li> <li><a href="/wiki/Boeing_C-137_Stratoliner" title="Boeing C-137 Stratoliner">KC-137</a></li> <li><a href="/wiki/McDonnell_Douglas_KC-10_Extender" title="McDonnell Douglas KC-10 Extender">KC-10</a></li> <li><a href="/wiki/Boeing_KC-46_Pegasus" title="Boeing KC-46 Pegasus">KC-46</a></li> <li><a href="/wiki/Boeing_KC-767" title="Boeing KC-767">KC-767</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Trainers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing-Stearman_Model_75" title="Boeing-Stearman Model 75">PT-13</a></li> <li><a href="/wiki/Boeing-Stearman_Model_75" title="Boeing-Stearman Model 75">PT-17</a></li> <li><a href="/wiki/Boeing-Stearman_Model_75" title="Boeing-Stearman Model 75">PT-18</a></li> <li><a href="/wiki/Boeing-Stearman_Model_75" title="Boeing-Stearman Model 75">PT-27</a></li> <li><a href="/wiki/Boeing_XAT-15" title="Boeing XAT-15">XAT-15</a></li> <li><a href="/wiki/Boeing_T-43" title="Boeing T-43">T-43</a></li> <li><a href="/wiki/McDonnell_Douglas_T-45_Goshawk" title="McDonnell Douglas T-45 Goshawk">T-45</a></li> <li><a href="/wiki/Boeing%E2%80%93Saab_T-7_Red_Hawk" title="Boeing–Saab T-7 Red Hawk">T-7</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Patrol and surveillance</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_XPB" title="Boeing XPB">XPB</a></li> <li><a href="/wiki/Boeing_XPBB_Sea_Ranger" title="Boeing XPBB Sea Ranger">XPBB</a></li> <li><a href="/wiki/Boeing_XP3B" title="Boeing XP3B">XP3B</a></li> <li><a href="/wiki/Boeing_P-8_Poseidon" title="Boeing P-8 Poseidon">P-8</a></li> <li><a href="/wiki/Boeing_EC-135" title="Boeing EC-135">EC-135</a></li> <li><a href="/wiki/Boeing_C-137_Stratoliner" title="Boeing C-137 Stratoliner">EC-18</a></li> <li><a href="/wiki/Boeing_E-3_Sentry" title="Boeing E-3 Sentry">E-3</a></li> <li><a href="/wiki/Boeing_E-4" title="Boeing E-4">E-4</a></li> <li><a href="/wiki/Boeing_E-6_Mercury" title="Boeing E-6 Mercury">E-6</a></li> <li><a href="/wiki/Boeing_E-7_Wedgetail" title="Boeing E-7 Wedgetail">E-7</a></li> <li><a href="/wiki/Northrop_Grumman_E-8_Joint_STARS" title="Northrop Grumman E-8 Joint STARS">E-8</a></li> <li><a href="/wiki/Northrop_Grumman_E-10_MC2A" title="Northrop Grumman E-10 MC2A">E-10</a></li> <li><a href="/wiki/Boeing_E-767" title="Boeing E-767">E-767</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Reconnaissance</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_NC-135" title="Boeing NC-135">NC-135</a></li> <li><a href="/wiki/Boeing_OC-135B_Open_Skies" title="Boeing OC-135B Open Skies">OC-135B</a></li> <li><a href="/wiki/Boeing_RC-135" title="Boeing RC-135">RC-135</a></li> <li><a href="/wiki/Boeing_WC-135_Constant_Phoenix" title="Boeing WC-135 Constant Phoenix">WC-135</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Drones/UAVs</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_YQM-94_B-Gull" title="Boeing YQM-94 B-Gull">YQM-94</a></li> <li><a href="/wiki/Boeing_CQM-121_Pave_Tiger" title="Boeing CQM-121 Pave Tiger">CQM-121</a></li> <li><a href="/wiki/Boeing_A160_Hummingbird" title="Boeing A160 Hummingbird">MQ-18</a></li> <li><a href="/wiki/Boeing_Insitu_RQ-21_Blackjack" title="Boeing Insitu RQ-21 Blackjack">RQ-21</a></li> <li><a href="/wiki/Boeing_MQ-25_Stingray" title="Boeing MQ-25 Stingray">MQ-25</a></li> <li><a href="/wiki/Boeing_Insitu_MQ-27_ScanEagle" title="Boeing Insitu MQ-27 ScanEagle">MQ-27</a></li> <li><a href="/wiki/Boeing_MQ-28_Ghost_Bat" title="Boeing MQ-28 Ghost Bat">MQ-28</a></li> <li><a href="/wiki/Boeing_X-50_Dragonfly" title="Boeing X-50 Dragonfly">X-50</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Experimental/prototypes</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/General_Dynamics%E2%80%93Boeing_AFTI/F-111A_Aardvark" title="General Dynamics–Boeing AFTI/F-111A Aardvark">AFTI/F-111A</a></li> <li><a href="/wiki/Boeing_Bird_of_Prey" title="Boeing Bird of Prey">Bird of Prey</a></li> <li><a href="/wiki/Boeing_Phantom_Eye" title="Boeing Phantom Eye">Phantom Eye</a></li> <li><a href="/wiki/Boeing_Phantom_Ray" title="Boeing Phantom Ray">Phantom Ray</a></li> <li><a href="/wiki/Boeing_Skyfox" title="Boeing Skyfox">Skyfox</a></li> <li><a href="/wiki/Boeing_X-20_Dyna-Soar" title="Boeing X-20 Dyna-Soar">X-20</a></li> <li><a href="/wiki/Boeing_X-32" title="Boeing X-32">X-32</a></li> <li><a href="/wiki/McDonnell_Douglas_X-36" title="McDonnell Douglas X-36">X-36</a></li> <li><a href="/wiki/Boeing_X-37" title="Boeing X-37">X-37</a></li> <li><a href="/wiki/Boeing_X-40" title="Boeing X-40">X-40</a></li> <li><a href="/wiki/Boeing_X-45" title="Boeing X-45">X-45</a></li> <li><a href="/wiki/Boeing_X-48" title="Boeing X-48">X-48</a></li> <li><a href="/wiki/Boeing_X-50_Dragonfly" title="Boeing X-50 Dragonfly">X-50</a></li> <li><a class="mw-selflink selflink">X-51</a></li> <li><a href="/wiki/Boeing_X-53_Active_Aeroelastic_Wing" title="Boeing X-53 Active Aeroelastic Wing">X-53</a></li> <li><a href="/wiki/Boeing_YAL-1" title="Boeing YAL-1">YAL-1</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"></div><div role="navigation" class="navbox" aria-labelledby="USAF_/_Joint_Service_experimental_aircraft_(X-plane)_designations_since_1941" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:US_experimental_aircraft" title="Template:US experimental aircraft"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:US_experimental_aircraft" title="Template talk:US experimental aircraft"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:US_experimental_aircraft" title="Special:EditPage/Template:US experimental aircraft"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="USAF_/_Joint_Service_experimental_aircraft_(X-plane)_designations_since_1941" style="font-size:114%;margin:0 4em">USAF / Joint Service <a href="/wiki/Experimental_aircraft" title="Experimental aircraft">experimental aircraft</a> (<a href="/wiki/List_of_X-planes" title="List of X-planes">X-plane</a>) designations since 1941</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Supersonic/special test<br />"S" (1946–1947)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bell_X-1" title="Bell X-1">S-1</a></li> <li><a href="/wiki/Bell_X-2" title="Bell X-2">S-2</a></li> <li><a href="/wiki/Douglas_X-3_Stiletto" title="Douglas X-3 Stiletto">S-3</a></li> <li><a href="/wiki/Northrop_X-4_Bantam" title="Northrop X-4 Bantam">S-4</a></li> <li><a href="/wiki/Bell_X-5" title="Bell X-5">S-5</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Experimental<br />"X" (1948–present)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">1–25</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bell_X-1" title="Bell X-1">X-1</a></li> <li><a href="/wiki/Bell_X-2" title="Bell X-2">X-2</a></li> <li><a href="/wiki/Douglas_X-3_Stiletto" title="Douglas X-3 Stiletto">X-3</a></li> <li><a href="/wiki/Northrop_X-4_Bantam" title="Northrop X-4 Bantam">X-4</a></li> <li><a href="/wiki/Bell_X-5" title="Bell X-5">X-5</a></li> <li><a href="/wiki/Convair_X-6" title="Convair X-6">X-6</a></li> <li><a href="/wiki/Lockheed_X-7" title="Lockheed X-7">X-7</a></li> <li><a href="/wiki/Aerojet_General_X-8" title="Aerojet General X-8">X-8</a></li> <li><a href="/wiki/Bell_X-9_Shrike" title="Bell X-9 Shrike">X-9</a></li> <li><a href="/wiki/North_American_X-10" title="North American X-10">X-10</a></li> <li><a href="/wiki/SM-65A_Atlas" title="SM-65A Atlas">X-11</a></li> <li><a href="/wiki/SM-65B_Atlas" title="SM-65B Atlas">X-12</a></li> <li><a href="/wiki/Ryan_X-13_Vertijet" title="Ryan X-13 Vertijet">X-13</a></li> <li><a href="/wiki/Bell_X-14" title="Bell X-14">X-14</a></li> <li><a href="/wiki/North_American_X-15" title="North American X-15">X-15</a></li> <li><a href="/wiki/Bell_X-16" title="Bell X-16">X-16</a></li> <li><a href="/wiki/Lockheed_X-17" title="Lockheed X-17">X-17</a></li> <li><a href="/wiki/Hiller_X-18" title="Hiller X-18">X-18</a></li> <li><a href="/wiki/Curtiss-Wright_X-19" title="Curtiss-Wright X-19">X-19</a></li> <li><a href="/wiki/Boeing_X-20_Dyna-Soar" title="Boeing X-20 Dyna-Soar">X-20</a></li> <li><a href="/wiki/Northrop_X-21" title="Northrop X-21">X-21</a></li> <li><a href="/wiki/Bell_X-22" title="Bell X-22">X-22</a></li> <li><a href="/wiki/Martin_X-23_PRIME" title="Martin X-23 PRIME">X-23</a><sup><small>3</small></sup></li> <li><a href="/wiki/Martin_Marietta_X-24" title="Martin Marietta X-24">X-24</a> <ul><li><a href="/wiki/Lockheed_L-301" title="Lockheed L-301">X-24C</a><sup><small>3</small></sup></li></ul></li> <li><a href="/wiki/Bensen_B-8" title="Bensen B-8">X-25</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">26–50</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Schweizer_X-26_Frigate" title="Schweizer X-26 Frigate">X-26</a></li> <li><a href="/wiki/Lockheed_CL-1200_Lancer" title="Lockheed CL-1200 Lancer">X-27</a></li> <li><a href="/wiki/Osprey_Osprey_I" title="Osprey Osprey I">X-28</a></li> <li><a href="/wiki/Grumman_X-29" title="Grumman X-29">X-29</a></li> <li><a href="/wiki/Rockwell_X-30" title="Rockwell X-30">X-30</a></li> <li><a href="/wiki/Rockwell-MBB_X-31" title="Rockwell-MBB X-31">X-31</a></li> <li><a href="/wiki/Boeing_X-32" title="Boeing X-32">X-32</a></li> <li><a href="/wiki/Lockheed_Martin_X-33" title="Lockheed Martin X-33">X-33</a></li> <li><a href="/wiki/Orbital_Sciences_X-34" title="Orbital Sciences X-34">X-34</a></li> <li><a href="/wiki/Lockheed_Martin_X-35" title="Lockheed Martin X-35">X-35</a></li> <li><a href="/wiki/McDonnell_Douglas_X-36" title="McDonnell Douglas X-36">X-36</a></li> <li><a href="/wiki/Boeing_X-37" title="Boeing X-37">X-37</a></li> <li><a href="/wiki/NASA_X-38" title="NASA X-38">X-38</a></li> <li><a href="/wiki/Future_Aircraft_Technology_Enhancements" title="Future Aircraft Technology Enhancements">X-39</a><sup><small>3</small></sup></li> <li><a href="/wiki/Boeing_X-40" title="Boeing X-40">X-40</a></li> <li><a href="/wiki/X-41_Common_Aero_Vehicle" title="X-41 Common Aero Vehicle">X-41</a></li> <li><a href="/wiki/X-42_Pop-Up_Upper_Stage" class="mw-redirect" title="X-42 Pop-Up Upper Stage">X-42</a></li> <li><a href="/wiki/NASA_X-43" title="NASA X-43">X-43</a></li> <li>X-44<sup><small>2</small></sup> <ul><li><a href="/wiki/Lockheed_Martin_X-44_MANTA" title="Lockheed Martin X-44 MANTA">X-44 MANTA</a></li> <li><a href="/wiki/Lockheed_Martin_X-44_(UAV)" title="Lockheed Martin X-44 (UAV)">X-44 (UAV)</a></li></ul></li> <li><a href="/wiki/Boeing_X-45" title="Boeing X-45">X-45</a></li> <li><a href="/wiki/Boeing_X-46" title="Boeing X-46">X-46</a></li> <li><a href="/wiki/Northrop_Grumman_X-47A_Pegasus" title="Northrop Grumman X-47A Pegasus">X-47</a> <ul><li><a href="/wiki/Northrop_Grumman_X-47B" title="Northrop Grumman X-47B">X-47B</a></li></ul></li> <li><a href="/wiki/Boeing_X-48" title="Boeing X-48">X-48</a></li> <li><a href="/wiki/Piasecki_X-49_SpeedHawk" title="Piasecki X-49 SpeedHawk">X-49</a></li> <li><a href="/wiki/Boeing_X-50_Dragonfly" title="Boeing X-50 Dragonfly">X-50</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">51–</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">X-51</a></li> <li><span class="tmp-color" style="color:grey">X-52</span><sup><small>1</small></sup></li> <li><a href="/wiki/Boeing_X-53_Active_Aeroelastic_Wing" title="Boeing X-53 Active Aeroelastic Wing">X-53</a></li> <li><a href="/wiki/Gulfstream_X-54" title="Gulfstream X-54">X-54</a></li> <li><a href="/wiki/Lockheed_Martin_X-55" title="Lockheed Martin X-55">X-55</a></li> <li><a href="/wiki/Lockheed_Martin_X-56" title="Lockheed Martin X-56">X-56</a></li> <li><a href="/wiki/NASA_X-57_Maxwell" title="NASA X-57 Maxwell">X-57</a></li> <li><span class="tmp-color" style="color:grey">X-58</span><sup><small>1</small></sup></li> <li><a href="/wiki/Lockheed_Martin_X-59_Quesst" title="Lockheed Martin X-59 Quesst">X-59</a></li> <li><a href="/wiki/Generation_Orbit_X-60" title="Generation Orbit X-60">X-60</a></li> <li><a href="/wiki/Dynetics_X-61_Gremlins" title="Dynetics X-61 Gremlins">X-61</a></li> <li><a href="/wiki/General_Dynamics_X-62_VISTA" title="General Dynamics X-62 VISTA">X-62</a></li> <li><a href="/wiki/ABL_Space_Systems_X-63" class="mw-redirect" title="ABL Space Systems X-63">X-63</a></li> <li><a href="/w/index.php?title=KT_Engineering_X-64&action=edit&redlink=1" class="new" title="KT Engineering X-64 (page does not exist)">X-64</a></li> <li><a href="/wiki/Aurora_X-65_CRANE" title="Aurora X-65 CRANE">X-65</a></li> <li><a href="/wiki/Boeing_X-66" title="Boeing X-66">X-66</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NASA_AD-1" title="NASA AD-1">AD-1</a></li> <li><a href="/wiki/Rockwell_HiMAT" title="Rockwell HiMAT">HiMAT</a></li> <li><a href="/wiki/Northrop_HL-10" title="Northrop HL-10">HL-10</a></li> <li><a href="/wiki/NASA_M2-F1" title="NASA M2-F1">M2-F1</a></li> <li><a href="/wiki/Northrop_M2-F2" title="Northrop M2-F2">M2-F2</a></li> <li><a href="/wiki/Northrop_M2-F3" title="Northrop M2-F3">M2-F3</a></li> <li><a href="/wiki/Kratos_XQ-58_Valkyrie" title="Kratos XQ-58 Valkyrie">XQ-58</a></li> <li><a href="/wiki/General_Atomics_XQ-67A" title="General Atomics XQ-67A">XQ-67</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><sup><small>1</small></sup> Not assigned</li> <li><sup>2</sup> Assigned to multiple types</li> <li><sup>3</sup> Unofficial</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"></div><div role="navigation" class="navbox" aria-labelledby="U.S._Air_Force_Research_Laboratory_(AFRL)_spacecraft_and_air_vehicles" style="wide;padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:AFRL_spacecraft" title="Template:AFRL spacecraft"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:AFRL_spacecraft" title="Template talk:AFRL spacecraft"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:AFRL_spacecraft" title="Special:EditPage/Template:AFRL spacecraft"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="U.S._Air_Force_Research_Laboratory_(AFRL)_spacecraft_and_air_vehicles" style="font-size:114%;margin:0 4em">U.S. <a href="/wiki/Air_Force_Research_Laboratory" title="Air Force Research Laboratory">Air Force Research Laboratory</a> (AFRL) spacecraft and air vehicles</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Launch/orbital vehicles</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Lockheed_Martin_X-33" title="Lockheed Martin X-33">X-33 <i>Venture Star</i></a> <small>(canceled)</small></li> <li><a href="/wiki/DARPA_Falcon_Project" title="DARPA Falcon Project">HTV-3X <i>Blackswift</i></a> <small>(canceled)</small></li> <li><a href="/wiki/Boeing_X-37" title="Boeing X-37">X-37 <i>Orbital Test Vehicle</i></a></li> <li><a href="/wiki/Boeing_X-40" title="Boeing X-40">X-40A <i>Space Maneuver Vehicle</i></a></li> <li><a href="/wiki/Boeing_X-51" class="mw-redirect" title="Boeing X-51">X-51A <i>WaveRider</i></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">University Nanosat Program</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/University_Nanosatellite_Program" title="University Nanosatellite Program">Program</a></li> <li><a href="/wiki/3_Corner_Satellite" title="3 Corner Satellite">3CS</a></li> <li><a href="/wiki/FASTRAC" title="FASTRAC">FASTRAC</a></li> <li><a href="/wiki/Cornell_University_Satellite" title="Cornell University Satellite">CUSat</a></li> <li><a href="/wiki/Drag_and_Atmospheric_Neutral_Density_Explorer" title="Drag and Atmospheric Neutral Density Explorer">DANDE</a></li> <li><a href="/wiki/ELFIN" title="ELFIN">ELFIN</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Space weather satellites</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/P91-1_ARGOS" class="mw-redirect" title="P91-1 ARGOS">ARGOS</a></li> <li><a href="/wiki/TSX-5" title="TSX-5">TSX-5</a></li> <li><a href="/wiki/Coriolis_(satellite)" title="Coriolis (satellite)">Coriolis</a></li> <li><a href="/wiki/C/NOFS" title="C/NOFS">C/NOFS</a></li> <li><a href="/wiki/Demonstration_and_Science_Experiments_(satellite)" class="mw-redirect" title="Demonstration and Science Experiments (satellite)">DSX</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technology demonstrators</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/TAOS_(satellite)" class="mw-redirect" title="TAOS (satellite)">TAOS</a></li> <li><a href="/wiki/MightySat-1" title="MightySat-1">MightySat-1</a></li> <li><a href="/wiki/MightySat-2" class="mw-redirect" title="MightySat-2">MightySat-2</a></li> <li><a href="/wiki/XSS_10" class="mw-redirect" title="XSS 10">XSS-10</a></li> <li><a href="/wiki/TechSat-21" title="TechSat-21">TechSat-21</a> <small>(canceled)</small></li> <li><a href="/wiki/XSS_11" class="mw-redirect" title="XSS 11">XSS-11</a></li> <li><a href="/wiki/Innovative_Space-based_Radar_Antenna_Technology" title="Innovative Space-based Radar Antenna Technology">ISAT</a></li> <li><a href="/wiki/PnPSat-1" title="PnPSat-1">PnPSat-1</a> <small> (canceled)</small></li> <li><a href="/wiki/Autonomous_Nanosatellite_Guardian_for_Evaluating_Local_Space" title="Autonomous Nanosatellite Guardian for Evaluating Local Space">ANGELS</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Tactical_Satellite_Program" title="Tactical Satellite Program">Tactical Satellite Program</a> satellites</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/TacSat-1" title="TacSat-1">TacSat-1</a></li> <li><a href="/wiki/TacSat-2" title="TacSat-2">TacSat-2</a></li> <li><a href="/wiki/TacSat-3" title="TacSat-3">TacSat-3</a></li> <li><a href="/wiki/TacSat-4" title="TacSat-4">TacSat-4</a></li> <li><a href="/wiki/TacSat-5" title="TacSat-5">TacSat-5</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" 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