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id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><table class="infobox" style="width:25.5em;border-spacing:2px;"> <tbody><tr> <th colspan="2" style="text-align: center; font-size: 125%;">XR-10 </th></tr> <tr> <td colspan="2" style="text-align: center;"><span typeof="mw:File"><a href="/wiki/File:Kellett_XR-10.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Kellett_XR-10.jpg/300px-Kellett_XR-10.jpg" decoding="async" width="300" height="221" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/4/46/Kellett_XR-10.jpg 1.5x" data-file-width="377" data-file-height="278" /></a></span> </td></tr> <tr> <th>Role </th> <td>Military transport helicopter<div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Type of aircraft</div> </td></tr> <tr> <th><span class="nowrap">National origin</span> </th> <td>United States </td></tr> <tr> <th>Manufacturer </th> <td><a href="/wiki/Kellett_Autogiro_Corporation" title="Kellett Autogiro Corporation">Kellett Autogiro Corporation</a> </td></tr> <tr> <th>First flight </th> <td>24 April 1947<sup id="cite_ref-jawa48p274c_1-0" class="reference"><a href="#cite_note-jawa48p274c-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <th><span class="nowrap">Number built</span> </th> <td>2 </td></tr> <tr> <th><span class="nowrap">Developed from</span> </th> <td><a href="/wiki/Kellett_XR-8" title="Kellett XR-8">Kellett XR-8</a> </td></tr> </tbody></table> <p>The <b>Kellett XR-10</b> was a military transport helicopter developed in the United States in the 1940s that only flew in prototype form. It was designed in response to a USAAF Technical Instruction issued for the development of a helicopter to transport passengers, cargo, or wounded personnel within an enclosed fuselage. Kellett's proposal followed the general layout that the company was developing in the <a href="/wiki/Kellett_XR-8" title="Kellett XR-8">XR-8</a>, with twin <a href="/wiki/Intermeshing_rotors" class="mw-redirect" title="Intermeshing rotors">intermeshing rotors</a>, and was accepted by the Air Force on 16 October over proposals by Sikorsky, Bell, and Platt-LePage. </p><p>The XR-10 resembled a scaled-up XR-8, although its twin engines were carried in nacelles at the fuselage sides, driving the rotors via long driveshafts, and the aircraft was skinned entirely in metal. The first of two prototypes flew on 24 April 1947, and at the time, was the largest rotorcraft to fly in the United States.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> During test-flights, however, the same problem that had been encountered with the XR-8's rotor system emerged when blades from the two rotors collided in flight. With fixes in place, flight testing continued, but on 3 October 1949, the first prototype crashed due to a control system failure and killed Kellett's chief test pilot, Dave Driskill. The project was abandoned shortly thereafter, and a 16-seat civil variant, the <b>KH-2</b>, never left the drawing board. </p><p><br /> </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=Kellett_XR-10&action=edit&section=1" 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> Jane's All the World's Aircraft 1948<sup id="cite_ref-jawa48p274c_1-1" class="reference"><a href="#cite_note-jawa48p274c-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></p><p><span style="font-size:120%"><b>General characteristics</b></span> </p><ul><li><b>Crew:</b> Two pilots</li> <li><b>Capacity:</b> 10 troops <i>or</i> 1,100 lb (500 kg) of cargo</li> <li><b>Length:</b> 28 ft 8 in (8.74 m) (fuselage length)</li> <li><b>Height:</b> 13 ft 9 in (4.19 m)</li> <li><b>Empty weight:</b> 8,200 lb (3,719 kg)</li> <li><b>Gross weight:</b> 11,000 lb (4,990 kg)</li> <li><b>Powerplant:</b> 2 × <a href="/wiki/Continental_R-975" class="mw-redirect" title="Continental R-975">Continental R-975</a>-15 nine-cylinder <a href="/wiki/Radial_engine" title="Radial engine">radial engines</a>, 525 hp (391 kW) each</li> <li><b>Main rotor diameter:</b> 2 × 65 ft 0 in (19.81 m)</li> <li><b>Main rotor area:</b> 3,320 sq ft (308 m<sup>2</sup>)</li></ul> <p><span style="font-size:120%"><b>Performance</b></span> </p> <ul><li><b>Maximum speed:</b> 120 mph (190 km/h, 100 kn)</li> <li><b>Range:</b> 362 mi (583 km, 315 nmi)</li> <li><b>Endurance:</b> 4.9 hr at 62 mph (100 km/h; 54 kn)</li> <li><b>Service ceiling:</b> 6,000 ft (1,800 m) (hover ceiling)</li></ul> <p class="mw-empty-elt"> </p> <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=Kellett_XR-10&action=edit&section=2" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <dl><dt>Notes</dt></dl> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-jawa48p274c-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-jawa48p274c_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-jawa48p274c_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Bridgman 1948, p. 274c</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">NASM</span> </li> </ol></div></div> <dl><dt>Bibliography</dt></dl> <ul><li><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 id="CITEREFBridgman1948" class="citation book cs1">Bridgman, Leonard (1948). <i>Jane's All the World's Aircraft 1948</i>. London: Sampson Low, Marston & Company, Ltd.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Jane%27s+All+the+World%27s+Aircraft+1948&rft.place=London&rft.pub=Sampson+Low%2C+Marston+%26+Company%2C+Ltd.&rft.date=1948&rft.aulast=Bridgman&rft.aufirst=Leonard&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKellett+XR-10" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLambermont1958" class="citation book cs1">Lambermont, Paul Marcel (1958). <i>Helicopters and Autogyros of the World</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Helicopters+and+Autogyros+of+the+World&rft.date=1958&rft.aulast=Lambermont&rft.aufirst=Paul+Marcel&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKellett+XR-10" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSimpson1998" class="citation book cs1">Simpson, R. W. (1998). <i>Airlife's Helicopters and Rotorcraft</i>. Ramsbury: Airlife Publishing. p. 225.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Airlife%27s+Helicopters+and+Rotorcraft&rft.place=Ramsbury&rft.pages=225&rft.pub=Airlife+Publishing&rft.date=1998&rft.aulast=Simpson&rft.aufirst=R.+W.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKellett+XR-10" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTaylor1989" class="citation book cs1">Taylor, Michael J. H. (1989). <i>Jane's Encyclopedia of Aviation</i>. London: Studio Editions. p. 558.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Jane%27s+Encyclopedia+of+Aviation&rft.place=London&rft.pages=558&rft.pub=Studio+Editions&rft.date=1989&rft.aulast=Taylor&rft.aufirst=Michael+J.+H.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKellett+XR-10" class="Z3988"></span></li></ul> <p><br /> </p> <ul><li><a rel="nofollow" class="external text" href="http://aerofiles.com/_kellett.html">aerofiles.com</a></li> <li><a rel="nofollow" class="external text" href="http://collections.nasm.si.edu/code/emuseum.asp?style=browse&currentrecord=1&page=search&profile=objects&searchdesc=kellett&quicksearch=kellett&newvalues=1&newstyle=single&newcurrentrecord=6">NASM website</a></li></ul> <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=Kellett_XR-10&action=edit&section=3" 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style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Kellett_K-1&action=edit&redlink=1" class="new" title="Kellett K-1 (page does not exist)">K-1</a></li> <li><a href="/wiki/Kellett_K-2" title="Kellett K-2">K-2</a></li> <li><a href="/wiki/Kellett_K-2" title="Kellett K-2">K-3</a></li> <li><a href="/wiki/Kellett_K-2" title="Kellett K-2">K-4</a></li> <li><a href="/wiki/Kellett_KD-1" title="Kellett KD-1">KD-1</a></li> <li><a class="mw-selflink selflink">KD-2</a></li> <li><a href="/w/index.php?title=Kellett_KD-10&action=edit&redlink=1" class="new" title="Kellett KD-10 (page does not exist)">KD-10</a></li> <li><a href="/w/index.php?title=Kellett_KH-15&action=edit&redlink=1" class="new" title="Kellett KH-15 (page does not exist)">KH-15</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Military designations</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <dl><dd><a href="/wiki/Kellett_KD-1" title="Kellett KD-1">YG-1</a></dd> <dd><a href="/wiki/Kellett_KD-1" title="Kellett KD-1">YO-60</a></dd> <dd><a href="/wiki/Kellett_KD-1" title="Kellett KD-1">XR-2</a></dd> <dd><a href="/wiki/Kellett_KD-1" title="Kellett KD-1">XR-3</a></dd> <dd><a href="/wiki/Kellett_XR-8" title="Kellett XR-8">XR-8</a></dd> <dd><a class="mw-selflink selflink">XR-10</a></dd></dl> </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="United_States_helicopter_designations,_Army/Air_Force_and_Tri-Service_systems" style="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:US_helicopters" title="Template:US helicopters"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:US_helicopters" title="Template talk:US helicopters"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:US_helicopters" title="Special:EditPage/Template:US helicopters"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="United_States_helicopter_designations,_Army/Air_Force_and_Tri-Service_systems" style="font-size:114%;margin:0 4em">United States <a href="/wiki/Helicopter" title="Helicopter">helicopter</a> designations, Army/Air Force and <a href="/wiki/1962_United_States_Tri-Service_aircraft_designation_system" title="1962 United States Tri-Service aircraft designation system">Tri-Service</a> systems</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>Numerical sequence used by USAAC/USAAF/USAF 1941–present; <a href="/wiki/United_States_Army" title="United States Army">U.S. Army</a> 1948–1956 and 1962–present; <a href="/wiki/United_States_Navy" title="United States Navy">U.S. Navy</a> 1962–present</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Army/Air Force sequence<br />(1941–1962)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" 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%">Prefix R-, 1941–1948</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/Platt-LePage_XR-1" title="Platt-LePage XR-1">R-1</a></li> <li><a href="/wiki/Kellett_KD-1" title="Kellett KD-1">R-2</a></li> <li><a href="/wiki/Kellett_KD-1" title="Kellett KD-1">R-3</a></li> <li><a href="/wiki/Sikorsky_R-4" title="Sikorsky R-4">R-4</a></li> <li><a href="/wiki/Sikorsky_H-5" title="Sikorsky H-5">R-5</a></li> <li><a href="/wiki/Sikorsky_R-6" title="Sikorsky R-6">R-6</a></li> <li><a href="/wiki/Sikorsky_R-6" title="Sikorsky R-6">R-7</a></li> <li><a href="/wiki/Kellett_XR-8" title="Kellett XR-8">R-8</a></li> <li><a href="/wiki/Firestone_XR-9" title="Firestone XR-9">R-9</a></li> <li><a class="mw-selflink selflink">R-10</a></li> <li><a href="/wiki/Rotorcraft_XR-11" title="Rotorcraft XR-11">R-11</a></li> <li><a href="/wiki/Bell_H-12" title="Bell H-12">R-12</a></li> <li><a href="/wiki/Bell_H-13_Sioux" title="Bell H-13 Sioux">R-13</a></li> <li><a href="/wiki/Firestone_XR-14" title="Firestone XR-14">R-14</a></li> <li><a href="/wiki/Bell_XH-15" title="Bell XH-15">R-15</a></li> <li><a href="/wiki/Piasecki_H-16_Transporter" title="Piasecki H-16 Transporter">R-16</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Prefix H-, 1948–1962</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/Sikorsky_H-5" title="Sikorsky H-5">H-5</a></li> <li><a href="/wiki/Sikorsky_R-6" title="Sikorsky R-6">H-6</a></li> <li><a href="/wiki/Firestone_XR-9" title="Firestone XR-9">H-9</a></li> <li><a class="mw-selflink selflink">H-10</a></li> <li><a href="/wiki/Rotorcraft_XR-11" title="Rotorcraft XR-11">H-11</a></li> <li><a href="/wiki/Bell_H-12" title="Bell H-12">H-12</a></li> <li><a href="/wiki/Bell_H-13_Sioux" title="Bell H-13 Sioux">H-13</a> <ul><li><a href="/wiki/Bell_47J_Ranger" title="Bell 47J Ranger">H-13J</a></li></ul></li> <li><a href="/wiki/Bell_XH-15" title="Bell XH-15">H-15</a></li> <li><a href="/wiki/Piasecki_H-16_Transporter" title="Piasecki H-16 Transporter">H-16</a></li> <li><a href="/wiki/Hughes_XH-17" title="Hughes XH-17">H-17</a></li> <li><a href="/wiki/Sikorsky_S-52" title="Sikorsky S-52">H-18</a></li> <li><a href="/wiki/Sikorsky_H-19_Chickasaw" title="Sikorsky H-19 Chickasaw">H-19</a></li> <li><a href="/wiki/McDonnell_XH-20_Little_Henry" title="McDonnell XH-20 Little Henry">H-20</a></li> <li><a href="/wiki/Piasecki_H-21" title="Piasecki H-21">H-21</a></li> <li><a href="/wiki/Kaman_K-225" title="Kaman K-225">H-22</a></li> <li><a href="/wiki/Hiller_OH-23_Raven" title="Hiller OH-23 Raven">H-23</a></li> <li><a href="/wiki/Seibel_S-4" title="Seibel S-4">H-24</a></li> <li><a href="/wiki/Piasecki_HUP_Retriever" title="Piasecki HUP Retriever">H-25</a></li> <li><a href="/wiki/American_Helicopter_XH-26_Jet_Jeep" title="American Helicopter XH-26 Jet Jeep">H-26</a></li> <li><a href="/wiki/Piasecki_H-16_Transporter" title="Piasecki H-16 Transporter">H-27</a></li> <li><a href="/wiki/Hughes_XH-17" title="Hughes XH-17">H-28</a></li> <li><a href="/wiki/McDonnell_XH-20_Little_Henry" title="McDonnell XH-20 Little Henry">H-29</a></li> <li><a href="/wiki/McCulloch_MC-4" title="McCulloch MC-4">H-30</a></li> <li><a href="/wiki/Doman_LZ-5" title="Doman LZ-5">H-31</a></li> <li><a href="/wiki/Hiller_YH-32_Hornet" title="Hiller YH-32 Hornet">H-32</a></li> <li><a href="/wiki/Bell_XV-3" title="Bell XV-3">H-33</a></li> <li><a href="/wiki/Sikorsky_H-34" title="Sikorsky H-34">H-34</a></li> <li><a href="/wiki/McDonnell_XV-1" title="McDonnell XV-1">H-35</a></li> <li><span class="tmp-color" style="color:grey">H-36</span><sup><small>1</small></sup></li> <li><a href="/wiki/Sikorsky_CH-37_Mojave" title="Sikorsky CH-37 Mojave">H-37</a></li> <li><span class="tmp-color" style="color:grey">H-38</span><sup><small>1</small></sup></li> <li><a href="/wiki/Sikorsky_XH-39" title="Sikorsky XH-39">H-39</a></li> <li><a href="/wiki/Bell_UH-1_Iroquois" title="Bell UH-1 Iroquois">H-40</a></li> <li><a href="/wiki/Cessna_CH-1_Skyhook" title="Cessna CH-1 Skyhook">H-41</a></li> <li><a href="/wiki/Hughes_TH-55_Osage" title="Hughes TH-55 Osage">H-42</a></li> <li><a href="/wiki/Kaman_HH-43_Huskie" title="Kaman HH-43 Huskie">H-43</a></li> <li><span class="tmp-color" style="color:grey">H-44</span><sup><small>1</small></sup></li> <li><span class="tmp-color" style="color:grey">H-45</span><sup><small>1</small></sup></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/1962_United_States_Tri-Service_aircraft_designation_system" title="1962 United States Tri-Service aircraft designation system">Tri-Service sequence</a><br />(1962–present)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" 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%">1962 redesignations</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_H-13_Sioux" title="Bell H-13 Sioux">H-13</a> <ul><li><a href="/wiki/Bell_201" title="Bell 201">H-13F</a></li> <li><a href="/wiki/Bell_47J_Ranger" title="Bell 47J Ranger">H-13J</a></li></ul></li> <li><a href="/wiki/Sikorsky_H-19_Chickasaw" title="Sikorsky H-19 Chickasaw">H-19</a></li> <li><a href="/wiki/Piasecki_H-21" title="Piasecki H-21">H-21</a></li> <li><a href="/wiki/Hiller_OH-23_Raven" title="Hiller OH-23 Raven">H-23</a></li> <li><a href="/wiki/Piasecki_HUP_Retriever" title="Piasecki HUP Retriever">H-25</a></li> <li><a href="/wiki/Sikorsky_H-34" title="Sikorsky H-34">H-34</a></li> <li><a href="/wiki/Sikorsky_CH-37_Mojave" title="Sikorsky CH-37 Mojave">H-37</a></li> <li><a href="/wiki/Kaman_HH-43_Huskie" title="Kaman HH-43 Huskie">H-43</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">New designations</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_Vertol_CH-46_Sea_Knight" title="Boeing Vertol CH-46 Sea Knight">H-46</a></li> <li><a href="/wiki/Boeing_CH-47_Chinook" title="Boeing CH-47 Chinook">H-47</a></li> <li><a href="/wiki/Bell_UH-1_Iroquois" title="Bell UH-1 Iroquois">H-48</a></li> <li><a href="/wiki/Boeing_Vertol_CH-46_Sea_Knight" title="Boeing Vertol CH-46 Sea Knight">H-49</a></li> <li><a href="/wiki/Gyrodyne_QH-50_DASH" title="Gyrodyne QH-50 DASH">H-50</a></li> <li><a href="/wiki/Lockheed_XH-51" title="Lockheed XH-51">H-51</a></li> <li><a href="/wiki/Sikorsky_HH-52_Seaguard" title="Sikorsky HH-52 Seaguard">H-52</a></li> <li>H-53 <ul><li><a href="/wiki/Sikorsky_CH-53_Sea_Stallion" title="Sikorsky CH-53 Sea Stallion">CH-53</a>/<a href="/wiki/Sikorsky_CH-53E_Super_Stallion" title="Sikorsky CH-53E Super Stallion">E</a>/<a href="/wiki/Sikorsky_CH-53K_King_Stallion" title="Sikorsky CH-53K King Stallion">K</a></li> <li><a href="/wiki/Sikorsky_MH-53" title="Sikorsky MH-53">HH-53/MH-53</a></li></ul></li> <li><a href="/wiki/Sikorsky_CH-54_Tarhe" title="Sikorsky CH-54 Tarhe">H-54</a></li> <li><a href="/wiki/Hughes_TH-55_Osage" title="Hughes TH-55 Osage">H-55</a></li> <li><a href="/wiki/Lockheed_AH-56_Cheyenne" title="Lockheed AH-56 Cheyenne">H-56</a></li> <li><a href="/wiki/Bell_206" title="Bell 206">H-57</a></li> <li><a href="/wiki/Bell_OH-58_Kiowa" title="Bell OH-58 Kiowa">H-58</a></li> <li><a href="/wiki/Sikorsky_S-69" title="Sikorsky S-69">H-59</a></li> <li>H-60 <ul><li><a href="/wiki/Sikorsky_UH-60_Black_Hawk" title="Sikorsky UH-60 Black Hawk">UH-60</a></li> <li><a href="/wiki/Sikorsky_SH-60_Seahawk" title="Sikorsky SH-60 Seahawk">SH-60</a></li> <li><a href="/wiki/Sikorsky_HH-60_Pave_Hawk" title="Sikorsky HH-60 Pave Hawk">HH-60</a></li> <li><a href="/wiki/Sikorsky_MH-60_Jayhawk" title="Sikorsky MH-60 Jayhawk">MH-60</a></li></ul></li> <li><a href="/wiki/Boeing_Vertol_YUH-61" title="Boeing Vertol YUH-61">H-61</a></li> <li><a href="/wiki/Boeing_Vertol_XCH-62" title="Boeing Vertol XCH-62">H-62</a></li> <li><a href="/wiki/Bell_YAH-63" title="Bell YAH-63">H-63</a></li> <li><a href="/wiki/Boeing_AH-64_Apache" title="Boeing AH-64 Apache">H-64</a></li> <li><a href="/wiki/Eurocopter_MH-65_Dolphin" title="Eurocopter MH-65 Dolphin">H-65</a></li> <li><a href="/wiki/Boeing%E2%80%93Sikorsky_RAH-66_Comanche" title="Boeing–Sikorsky RAH-66 Comanche">H-66</a></li> <li><a href="/wiki/Bell_206" title="Bell 206">H-67</a></li> <li><a href="/wiki/AgustaWestland_AW109" title="AgustaWestland AW109">H-68</a></li> <li><span class="tmp-color" style="color:grey">H-69</span><sup><small>1</small></sup></li> <li><a href="/wiki/Bell_ARH-70_Arapaho" title="Bell ARH-70 Arapaho">H-70</a></li> <li><a href="/wiki/Lockheed_Martin_VH-71_Kestrel" title="Lockheed Martin VH-71 Kestrel">H-71</a></li> <li><a href="/wiki/Eurocopter_UH-72_Lakota" title="Eurocopter UH-72 Lakota">H-72</a></li> <li><a href="/wiki/AgustaWestland_AW119_Koala" title="AgustaWestland AW119 Koala">H-73</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Alternate sequence</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_Huey_family" title="Bell Huey family">H-1</a> <ul><li><a href="/wiki/Bell_AH-1_Cobra" title="Bell AH-1 Cobra">AH-1</a>/<a href="/wiki/Bell_AH-1_SuperCobra" title="Bell AH-1 SuperCobra">J/T/W</a>/<a href="/wiki/Bell_AH-1Z_Viper" title="Bell AH-1Z Viper">Z</a></li> <li><a href="/wiki/Bell_UH-1_Iroquois" title="Bell UH-1 Iroquois">UH-1</a>/<a href="/wiki/Bell_UH-1N_Twin_Huey" title="Bell UH-1N Twin Huey">N</a>/<a href="/wiki/Bell_UH-1Y_Venom" title="Bell UH-1Y Venom">Y</a></li></ul></li> <li><a href="/wiki/Kaman_SH-2_Seasprite" title="Kaman SH-2 Seasprite">H-2</a> <ul><li><a href="/wiki/Kaman_SH-2G_Super_Seasprite" title="Kaman SH-2G Super Seasprite">G</a></li></ul></li> <li>H-3 <ul><li><a href="/wiki/Sikorsky_S-61R" title="Sikorsky S-61R">CH-3/HH-3</a></li> <li><a href="/wiki/Sikorsky_SH-3_Sea_King" title="Sikorsky SH-3 Sea King">SH-3</a></li></ul></li> <li><a href="/wiki/Bell_YOH-4" title="Bell YOH-4">H-4</a></li> <li><a href="/wiki/Fairchild_Hiller_FH-1100" title="Fairchild Hiller FH-1100">H-5</a></li> <li>H-6 <ul><li><a href="/wiki/Boeing_AH-6" title="Boeing AH-6">AH-6</a></li> <li><a href="/wiki/MD_Helicopters_MH-6_Little_Bird" title="MD Helicopters MH-6 Little Bird">MH-6</a></li> <li><a href="/wiki/Hughes_OH-6_Cayuse" title="Hughes OH-6 Cayuse">OH-6</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Non-sequential</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/MD_Helicopters_MD_Explorer" title="MD Helicopters MD Explorer">H-90</a></li> <li><a href="/wiki/Sikorsky_S-92" title="Sikorsky S-92">H-92</a> <ul><li><a href="/wiki/Sikorsky_VH-92_Patriot" title="Sikorsky VH-92 Patriot">CH-92/VH-92</a></li></ul></li> <li><a href="/wiki/Boeing_MH-139_Grey_Wolf" title="Boeing MH-139 Grey Wolf">H-139</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><sup>1</sup> Not assigned</div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Kellett_XR-10&oldid=1145173299">https://en.wikipedia.org/w/index.php?title=Kellett_XR-10&oldid=1145173299</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div 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