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<span>Applications</span> </div> </a> <ul id="toc-Applications-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Engines_on_display" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Engines_on_display"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Engines on display</span> </div> </a> <ul id="toc-Engines_on_display-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Specifications_(R-1690_S1E-G)" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Specifications_(R-1690_S1E-G)"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Specifications (R-1690 S1E-G)</span> </div> </a> <button aria-controls="toc-Specifications_(R-1690_S1E-G)-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> 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id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Pratt & Whitney R-1690 Hornet</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 13 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-13" 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">13 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Pratt_%26_Whitney_R-1690_Hornet" title="Pratt & Whitney R-1690 Hornet – Afrikaans" lang="af" hreflang="af" data-title="Pratt & Whitney R-1690 Hornet" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A8%D8%B1%D8%A7%D8%AA_%D8%A2%D9%86%D8%AF_%D9%88%D9%8A%D8%AA%D9%86%D9%8A_%D8%A2%D8%B1-1690_%D9%87%D9%88%D8%B1%D9%86%D8%AA" title="برات آند ويتني آر-1690 هورنت – Arabic" lang="ar" hreflang="ar" data-title="برات آند ويتني آر-1690 هورنت" 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/Pratt_%26_Whitney_R-1690" title="Pratt & Whitney R-1690 – Czech" lang="cs" hreflang="cs" data-title="Pratt & Whitney R-1690" 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/Pratt_%26_Whitney_R-1690" title="Pratt & Whitney R-1690 – German" lang="de" hreflang="de" data-title="Pratt & Whitney R-1690" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Pratt_%26_Whitney_R-1690_Hornet" title="Pratt & Whitney R-1690 Hornet – Estonian" lang="et" hreflang="et" data-title="Pratt & Whitney R-1690 Hornet" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Pratt_%26_Whitney_R-1690_Hornet" title="Pratt & Whitney R-1690 Hornet – Spanish" lang="es" hreflang="es" data-title="Pratt & Whitney R-1690 Hornet" 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/%D9%BE%D8%B1%D8%AA_%D8%A7%D9%86%D8%AF_%D9%88%DB%8C%D8%AA%D9%86%DB%8C_%D8%A2%D8%B1-%DB%B1%DB%B6%DB%B9%DB%B0_%D9%87%D9%88%D8%B1%D9%86%D8%AA" title="پرت اند ویتنی آر-۱۶۹۰ هورنت – Persian" lang="fa" hreflang="fa" data-title="پرت اند ویتنی آر-۱۶۹۰ هورنت" 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/Pratt_%26_Whitney_R-1690_Hornet" title="Pratt & Whitney R-1690 Hornet – French" lang="fr" hreflang="fr" data-title="Pratt & Whitney R-1690 Hornet" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Pratt_%26_Whitney_R-1690" title="Pratt & Whitney R-1690 – Italian" lang="it" hreflang="it" data-title="Pratt & Whitney R-1690" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%97%E3%83%A9%E3%83%83%E3%83%88%E3%83%BB%E3%82%A2%E3%83%B3%E3%83%89%E3%83%BB%E3%83%9B%E3%82%A4%E3%83%83%E3%83%88%E3%83%8B%E3%83%BC_R-1690" title="プラット・アンド・ホイットニー R-1690 – Japanese" lang="ja" hreflang="ja" data-title="プラット・アンド・ホイットニー R-1690" 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/Pratt_%26_Whitney_R-1690" title="Pratt & Whitney R-1690 – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Pratt & Whitney R-1690" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li 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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div 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"><style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"Pratt & Whitney Hornet" redirects here. For the Pratt & Whitney R-1860 Hornet B, see <a href="/wiki/Pratt_%26_Whitney_R-1860" class="mw-redirect" title="Pratt & Whitney R-1860">Pratt & Whitney R-1860</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_footnotes_needed plainlinks metadata ambox ambox-style ambox-More_footnotes_needed" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Text_document_with_red_question_mark.svg/40px-Text_document_with_red_question_mark.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Text_document_with_red_question_mark.svg/60px-Text_document_with_red_question_mark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Text_document_with_red_question_mark.svg/80px-Text_document_with_red_question_mark.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article includes a list of <a href="/wiki/Wikipedia:Citing_sources#General_references" title="Wikipedia:Citing sources">general references</a>, but <b>it lacks sufficient corresponding <a href="/wiki/Wikipedia:Citing_sources#Inline_citations" title="Wikipedia:Citing sources">inline citations</a></b>.<span class="hide-when-compact"> Please help to <a href="/wiki/Wikipedia:WikiProject_Reliability" title="Wikipedia:WikiProject Reliability">improve</a> this article by <a href="/wiki/Wikipedia:When_to_cite" title="Wikipedia:When to cite">introducing</a> more precise citations.</span> <span class="date-container"><i>(<span class="date">April 2018</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <table class="infobox" style="width:25.5em;border-spacing:2px;"> <tbody><tr> <th colspan="2" style="text-align: center; font-size: 125%;">R-1690 Hornet </th></tr> <tr> <td colspan="2" style="text-align: center;"><span typeof="mw:File"><a href="/wiki/File:Pratt_%26_Whitney_R-1690_Hornet_jaypee.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8c/Pratt_%26_Whitney_R-1690_Hornet_jaypee.jpg/300px-Pratt_%26_Whitney_R-1690_Hornet_jaypee.jpg" decoding="async" width="300" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8c/Pratt_%26_Whitney_R-1690_Hornet_jaypee.jpg/450px-Pratt_%26_Whitney_R-1690_Hornet_jaypee.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8c/Pratt_%26_Whitney_R-1690_Hornet_jaypee.jpg/600px-Pratt_%26_Whitney_R-1690_Hornet_jaypee.jpg 2x" data-file-width="1600" data-file-height="1200" /></a></span> </td></tr> <tr> <td colspan="2" style="border-bottom: 1px solid #aaa;text-align:center;">Pratt & Whitney Hornet, at the <a href="/wiki/Deutsches_Museum" title="Deutsches Museum">Deutsches Museum</a>, Munich. </td></tr> <tr> <th>Type </th> <td><a href="/wiki/Radial_engine" title="Radial engine">Radial engine</a> </td></tr> <tr> <th><span class="nowrap">National origin</span> </th> <td>United States </td></tr> <tr> <th>Manufacturer </th> <td><a href="/wiki/Pratt_%26_Whitney" title="Pratt & Whitney">Pratt & Whitney</a> </td></tr> <tr> <th>First run </th> <td>June 1926 </td></tr> <tr> <th><span class="nowrap">Major applications</span> </th> <td><a href="/wiki/Boeing_80" title="Boeing 80">Boeing 80</a> <br /> <a href="/wiki/Lockheed_Lodestar" class="mw-redirect" title="Lockheed Lodestar">Lockheed Lodestar</a> <br /> <a href="/wiki/Sikorsky_S-42" title="Sikorsky S-42">Sikorsky S-42</a> <br /> <a href="/wiki/Vought_O2U_Corsair" title="Vought O2U Corsair">Vought O2U Corsair</a> </td></tr> <tr> <th><span class="nowrap">Number built</span> </th> <td>2,944 </td></tr> <tr> <th><span class="nowrap">Developed into</span> </th> <td><a href="/wiki/Pratt_%26_Whitney_R-1860" class="mw-redirect" title="Pratt & Whitney R-1860">Pratt & Whitney R-1860</a> <br /> <a href="/wiki/BMW_132" title="BMW 132">BMW 132</a> <br /> <a href="/wiki/Mitsubishi_Kinsei" title="Mitsubishi Kinsei">Mitsubishi Kinsei</a> </td></tr></tbody></table> <p>The <b>Pratt & Whitney R-1690 Hornet</b> was a widely used American <a href="/wiki/Aircraft_engine" title="Aircraft engine">aircraft engine</a>. Developed by <a href="/wiki/Pratt_%26_Whitney" title="Pratt & Whitney">Pratt & Whitney</a>, 2,944 were produced from 1926 through 1942.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> It first flew in 1927. It was a single-row, 9-cylinder air-cooled radial design. Displacement was 1,690 cubic inches (27.7 L). It was built under license in Italy as the <b>Fiat A.59</b>. In Germany, the <a href="/wiki/BMW_132" title="BMW 132">BMW 132</a> was a developed version of this engine. The <a href="/wiki/Pratt_%26_Whitney_R-1860" class="mw-redirect" title="Pratt & Whitney R-1860">R-1860 Hornet B</a> was an enlarged version produced from 1929. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Variants">Variants</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=1" title="Edit section: Variants"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">For the R-1860 Hornet B series, see <a href="/wiki/Pratt_%26_Whitney_R-1860" class="mw-redirect" title="Pratt & Whitney R-1860">Pratt & Whitney R-1860</a>.</div> <dl><dt>R-1690-3</dt> <dd>525 hp (391 kW)</dd> <dt>R-1690-5</dt> <dd>525 hp (391 kW)</dd> <dt>R-1690-11</dt> <dd>775 hp (578 kW)</dd> <dt>R-1690-13</dt> <dd>625 hp (466 kW)</dd> <dt>R-1690-S5D1G</dt> <dd>700 hp (520 kW)</dd> <dt>R-1690-52</dt> <dd>750 hp (560 kW)</dd> <dt>R-1690-SDG</dt> <dd></dd> <dt>R-1690-S1EG</dt> <dd>750 hp (560 kW)</dd> <dt>R-1690-S2EG</dt> <dd></dd> <dt>R-1690-25</dt> <dd>850 hp (630 kW)</dd> <dt>R-1690-S1C3G</dt> <dd>1,050 hp (780 kW)</dd> <dt>Fiat A.59 R.</dt> <dd>License built in Italy with reduction gearing.</dd> <dt>Fiat A.59 R.C.</dt> <dd>License built in Italy with reduction gearing and supercharger.</dd> <dt>BMW Hornet</dt> <dd>License production of the Hornet in <a href="/wiki/Germany" title="Germany">Germany</a>, independently developed as the <a href="/wiki/BMW_132" title="BMW 132">BMW 132</a>.</dd></dl> <div class="mw-heading mw-heading2"><h2 id="Applications">Applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=2" title="Edit section: Applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col" style="column-width: 30em;"> <ul><li><a href="/wiki/Bach_Air_Yacht" title="Bach Air Yacht">Bach Air Yacht</a></li> <li><a href="/wiki/Bellanca_31-40" title="Bellanca 31-40">Bellanca 31-40</a></li> <li><a href="/wiki/Boeing_80" title="Boeing 80">Boeing 80</a></li> <li><a href="/wiki/Boeing_Model_95" title="Boeing Model 95">Boeing Model 95</a></li> <li><a href="/wiki/Boeing_Model_299" class="mw-redirect" title="Boeing Model 299">Boeing Model 299</a></li> <li><a href="/wiki/Burnelli_UB-14" title="Burnelli UB-14">Burnelli UB-14</a></li> <li><a href="/wiki/Douglas_O-38" title="Douglas O-38">Douglas O-38</a></li> <li><a href="/wiki/Focke-Wulf_Fw_200_V1" class="mw-redirect" title="Focke-Wulf Fw 200 V1">Focke-Wulf Fw 200 V1</a></li> <li><a href="/wiki/Granville_Gee_Bee_Model_R_Super_Sportster" title="Granville Gee Bee Model R Super Sportster">Gee Bee Model R-2</a> (1933)</li> <li><a href="/wiki/Granville_Brothers_Aircraft" title="Granville Brothers Aircraft">Gee Bee R 1/2 Super Sportster</a></li> <li><a href="/wiki/Granville_Gee_Bee_R-6" title="Granville Gee Bee R-6">Granville-Miller-de Lackner R-6H "Q.E.D."</a></li> <li><a href="/wiki/Junkers_Ju_52" title="Junkers Ju 52">Junkers Ju 52</a></li> <li><a href="/wiki/Junkers_Ju_86" title="Junkers Ju 86">Junkers Ju 86</a></li> <li><a href="/wiki/Junkers_W_34" title="Junkers W 34">Junkers W 34</a></li> <li><a href="/wiki/Keystone_B-3" title="Keystone B-3">Keystone B-3</a></li> <li><a href="/wiki/Lockheed_Model_14_Super_Electra" title="Lockheed Model 14 Super Electra">Lockheed Model 14 Super Electra</a> (L-14H)</li> <li><a href="/wiki/Lockheed_Lodestar" class="mw-redirect" title="Lockheed Lodestar">Lockheed Lodestar</a> (C-56A, C-56B, C-56C, C-56D, C-56E, C-59/Mk 1a)</li> <li><a href="/wiki/Martin_BM" title="Martin BM">Martin BM</a></li> <li><a href="/wiki/Martin_XB-14" class="mw-redirect" title="Martin XB-14">Martin XB-14</a></li> <li><a href="/wiki/Vought_O2U_Corsair" title="Vought O2U Corsair">Vought O2U Corsair</a></li> <li><a href="/wiki/Sikorsky_S-40A" class="mw-redirect" title="Sikorsky S-40A">Sikorsky S-40A</a></li> <li><a href="/wiki/Sikorsky_S-42" title="Sikorsky S-42">Sikorsky S-42</a></li> <li><a href="/wiki/Sikorsky_S-43" title="Sikorsky S-43">Sikorsky S-43</a></li> <li><a href="/wiki/Wedell-Williams_Model_44" title="Wedell-Williams Model 44">Wedell-Williams Model 44</a></li></ul></div> <div class="mw-heading mw-heading2"><h2 id="Engines_on_display">Engines on display</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=3" title="Edit section: Engines on display"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>There is a R-1690 on display at the <a href="/wiki/New_England_Air_Museum" title="New England Air Museum">New England Air Museum</a>, <a href="/wiki/Bradley_International_Airport" title="Bradley International Airport">Bradley International Airport</a>, Windsor Locks, CT.<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></li></ul> <div class="mw-heading mw-heading2"><h2 id="Specifications_(R-1690_S1E-G)"><span id="Specifications_.28R-1690_S1E-G.29"></span>Specifications (R-1690 S1E-G)</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=4" title="Edit section: Specifications (R-1690 S1E-G)"><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:Pratt_%26_Whitney_R-1690_Hornet_with_cutaways_detail.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Pratt_%26_Whitney_R-1690_Hornet_with_cutaways_detail.jpg/220px-Pratt_%26_Whitney_R-1690_Hornet_with_cutaways_detail.jpg" decoding="async" width="220" height="222" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Pratt_%26_Whitney_R-1690_Hornet_with_cutaways_detail.jpg/330px-Pratt_%26_Whitney_R-1690_Hornet_with_cutaways_detail.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/87/Pratt_%26_Whitney_R-1690_Hornet_with_cutaways_detail.jpg/440px-Pratt_%26_Whitney_R-1690_Hornet_with_cutaways_detail.jpg 2x" data-file-width="1702" data-file-height="1721" /></a><figcaption>R-1690 with chamber walls cut away to show internal workings</figcaption></figure> <p style="font-size: 90%; margin:0; padding: .2em"><i>Data from</i> <sup id="cite_ref-tsygulev_3-0" class="reference"><a href="#cite_note-tsygulev-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></p> <div class="mw-heading mw-heading3"><h3 id="General_characteristics">General characteristics</h3></div> <ul><li><b>Type:</b> Nine-cylinder single-row supercharged air-cooled <a href="/wiki/Radial_engine" title="Radial engine">radial engine</a></li> <li><b><a href="/wiki/Bore_(engine)" title="Bore (engine)">Bore</a>:</b> <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style><span class="frac">6<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">8</span></span> in (155.6 mm)</li> <li><b><a href="/wiki/Stroke_(engine)" title="Stroke (engine)">Stroke</a>:</b> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">6<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">8</span></span> in (161.9 mm)</li> <li><b><a href="/wiki/Engine_displacement" title="Engine displacement">Displacement</a>:</b> 1,690.5 cu in (27.7 L)</li> <li><b>Length:</b> 50.98 in (1,295 mm)</li> <li><b>Diameter:</b> 54.41 in (1,382 mm)</li> <li><b><a href="/wiki/Dry_weight" class="mw-redirect" title="Dry weight">Dry weight</a>:</b> 1,014 lb (460 kg)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Components">Components</h3></div> <ul><li><b><a href="/wiki/Valvetrain" title="Valvetrain">Valvetrain</a>:</b> <a href="/wiki/Pushrod" class="mw-redirect" title="Pushrod">Pushrod</a>-actuated</li> <li><b><a href="/wiki/Supercharger" title="Supercharger">Supercharger</a>:</b> Single-speed <a href="/wiki/Centrifugal_type_supercharger" class="mw-redirect" title="Centrifugal type supercharger">centrifugal type supercharger</a>, 12.0:1 gear ratio</li> <li><b>Fuel system:</b> Two-barrel <a href="/wiki/Bendix-Stromberg_pressure_carburetor" title="Bendix-Stromberg pressure carburetor">Stromberg</a> <a href="/wiki/Carburetor" title="Carburetor">carburetor</a></li> <li><b>Fuel type:</b> 87 <a href="/wiki/Octane_rating" title="Octane rating">octane rating</a> <a href="/wiki/Gasoline" title="Gasoline">gasoline</a></li> <li><b>Cooling system:</b> Air-cooled</li> <li><b><a href="/wiki/Propeller_speed_reduction_unit" title="Propeller speed reduction unit">Reduction gear</a>:</b> <a href="/wiki/Epicyclic_gearing" title="Epicyclic gearing">Epicyclic gearing</a>, 2:3</li></ul> <div class="mw-heading mw-heading3"><h3 id="Performance">Performance</h3></div> <ul><li><b>Power output:</b> <br /></li> <li>789 hp (588 kW) at 2,300 rpm for takeoff</li> <li>740 hp (550 kW) at 2,250 rpm at 7,000 ft (2,100 m)</li> <li><b><a href="/wiki/Power_density" title="Power density">Specific power</a>:</b> 0.47 hp/cu in (21.39 kW/L)</li> <li><b><a href="/wiki/Compression_ratio" title="Compression ratio">Compression ratio</a>:</b> 6.0:1</li> <li><b><a href="/wiki/Brake_specific_fuel_consumption" class="mw-redirect" title="Brake specific fuel consumption">Specific fuel consumption</a>:</b> 0.6 lb/(hp•h) (362 g/(kW•h))</li> <li><b>Oil consumption:</b> 0.42 oz/(hp•h) (16 g/(kW•h))</li> <li><b><a href="/wiki/Power-to-weight_ratio" title="Power-to-weight ratio">Power-to-weight ratio</a>:</b> 0.78 hp/lb (1.28 kW/kg)</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=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=5" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p> <b>Related development</b> </p> <ul><li><a href="/wiki/BMW_132" title="BMW 132">BMW 132</a></li> <li><a href="/wiki/Mitsubishi_Kinsei" title="Mitsubishi Kinsei">Mitsubishi Kinsei</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1860_Hornet_B" title="Pratt & Whitney R-1860 Hornet B">Pratt & Whitney R-1860 Hornet B</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2180-A_Twin_Hornet" title="Pratt & Whitney R-2180-A Twin Hornet">Pratt & Whitney R-2180-A Twin Hornet</a></li></ul> <p> <b>Comparable engines</b> </p> <ul><li><a href="/wiki/Bristol_Pegasus" title="Bristol Pegasus">Bristol Pegasus</a></li> <li><a href="/wiki/Wright_R-1750" class="mw-redirect" title="Wright R-1750">Wright R-1750</a></li></ul> <p><b>Related lists</b> </p> <ul><li><a href="/wiki/List_of_aircraft_engines" title="List of aircraft engines">List of aircraft engines</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=6" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Notes">Notes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=7" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.pw.utc.com/vgn-ext-templating/v/index.jsp?vgnextoid=ea4cf3b8f77fb010VgnVCM1000000881000aRCRD">Pratt & Whitney - R-1690 page</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080126093207/http://www.pw.utc.com/vgn-ext-templating/v/index.jsp?vgnextoid=ea4cf3b8f77fb010VgnVCM1000000881000aRCRD">Archived</a> 2008-01-26 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> Retrieved: 25 October 2008</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"><a rel="nofollow" class="external free" href="http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1129">http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1129</a> "Pratt & Whitney R-1690 Hornet"</span> </li> <li id="cite_note-tsygulev-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-tsygulev_3-0">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px 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.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="CITEREFTsygulev1939" class="citation book cs1 cs1-prop-foreign-lang-source">Tsygulev (1939). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090324160448/http://base13.glasnet.ru/text/aviamotory/t.htm"><i>Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств)</i></a> (in Russian). <a href="/wiki/Moscow" title="Moscow">Moscow</a>: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR. Archived from <a rel="nofollow" class="external text" href="http://base13.glasnet.ru/text/aviamotory/t.htm">the original</a> on 2009-03-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Aviacionnye+motory+voennykh+vozdushnykh+sil+inostrannykh+gosudarstv+%28%D0%90%D0%B2%D0%B8%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D1%8B%D0%B5+%D0%BC%D0%BE%D1%82%D0%BE%D1%80%D1%8B+%D0%B2%D0%BE%D0%B5%D0%BD%D0%BD%D1%8B%D1%85+%D0%B2%D0%BE%D0%B7%D0%B4%D1%83%D1%88%D0%BD%D1%8B%D1%85+%D1%81%D0%B8%D0%BB+%D0%B8%D0%BD%D0%BE%D1%81%D1%82%D1%80%D0%B0%D0%BD%D0%BD%D1%8B%D1%85+%D0%B3%D0%BE%D1%81%D1%83%D0%B4%D0%B0%D1%80%D1%81%D1%82%D0%B2%29&rft.place=Moscow&rft.pub=Gosudarstvennoe+voennoe+izdatelstvo+Narkomata+Oborony+Soyuza+SSR&rft.date=1939&rft.au=Tsygulev&rft_id=http%3A%2F%2Fbase13.glasnet.ru%2Ftext%2Faviamotory%2Ft.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3APratt+%26+Whitney+R-1690+Hornet" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading3"><h3 id="Bibliography">Bibliography</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=8" title="Edit section: Bibliography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGunston2006" class="citation book cs1">Gunston, Bill (2006). <i>World Encyclopedia of Aero Engines, 5th Edition</i>. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-7509-4479-X" title="Special:BookSources/0-7509-4479-X"><bdi>0-7509-4479-X</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=World+Encyclopedia+of+Aero+Engines%2C+5th+Edition&rft.place=Phoenix+Mill%2C+Gloucestershire%2C+England%2C+UK&rft.pub=Sutton+Publishing+Limited&rft.date=2006&rft.isbn=0-7509-4479-X&rft.aulast=Gunston&rft.aufirst=Bill&rfr_id=info%3Asid%2Fen.wikipedia.org%3APratt+%26+Whitney+R-1690+Hornet" class="Z3988"></span></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=Pratt_%26_Whitney_R-1690_Hornet&action=edit&section=9" title="Edit section: External 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style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pratt_%26_Whitney_R-985_Wasp_Junior" title="Pratt & Whitney R-985 Wasp Junior">R-985</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1340_Wasp" title="Pratt & Whitney R-1340 Wasp">R-1340</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1535_Twin_Wasp_Junior" title="Pratt & Whitney R-1535 Twin Wasp Junior">R-1535</a></li> <li><a class="mw-selflink selflink">R-1690</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1830_Twin_Wasp" title="Pratt & Whitney R-1830 Twin Wasp">R-1830</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1860_Hornet_B" title="Pratt & Whitney R-1860 Hornet B">R-1860</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2000_Twin_Wasp" title="Pratt & Whitney R-2000 Twin Wasp">R-2000</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2060_Yellow_Jacket" title="Pratt & Whitney R-2060 Yellow Jacket">R-2060</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2180-A_Twin_Hornet" title="Pratt & Whitney R-2180-A Twin Hornet">R-2180-A</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2180-E_Twin_Wasp_E" title="Pratt & Whitney R-2180-E Twin Wasp E">R-2180-E</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_R-2270&action=edit&redlink=1" class="new" title="Pratt & Whitney R-2270 (page does not exist)">R-2270</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2800_Double_Wasp" title="Pratt & Whitney R-2800 Double Wasp">R-2800</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-4360_Wasp_Major" title="Pratt & Whitney R-4360 Wasp Major">R-4360</a></li></ul> <ul><li><a href="/wiki/Pratt_%26_Whitney_R-2800_Double_Wasp" title="Pratt & Whitney R-2800 Double Wasp">Double Wasp</a></li> <li><a class="mw-selflink selflink">Hornet (A)</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1860_Hornet_B" title="Pratt & Whitney R-1860 Hornet B">Hornet B</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2180-A_Twin_Hornet" title="Pratt & Whitney R-2180-A Twin Hornet">Twin Hornet</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1830_Twin_Wasp" title="Pratt & Whitney R-1830 Twin Wasp">Twin Wasp (R-1830)</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2000_Twin_Wasp" title="Pratt & Whitney R-2000 Twin Wasp">Twin Wasp (R-2000)</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2180-E_Twin_Wasp_E" title="Pratt & Whitney R-2180-E Twin Wasp E">Twin Wasp E</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1535_Twin_Wasp_Junior" title="Pratt & Whitney R-1535 Twin Wasp Junior">Twin Wasp Junior</a></li> <li><a href="/wiki/Pratt_%26_Whitney_Wasp_series" title="Pratt & Whitney Wasp series">Wasp series</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1340_Wasp" title="Pratt & Whitney R-1340 Wasp">Wasp</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-985_Wasp_Junior" title="Pratt & Whitney R-985 Wasp Junior">Wasp Junior</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-4360_Wasp_Major" title="Pratt & Whitney R-4360 Wasp Major">Wasp Major</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2060_Yellow_Jacket" title="Pratt & Whitney R-2060 Yellow Jacket">Yellow Jacket</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/H_engine" title="H engine">H piston engines</a></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/Pratt_%26_Whitney_X-1800" title="Pratt & Whitney X-1800">X-1800/XH-2600</a></li> <li><a href="/wiki/Pratt_%26_Whitney_XH-3130" title="Pratt & Whitney XH-3130">XH-3130 (XH-3730)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Free-piston_gas_turbine" class="mw-redirect" title="Free-piston gas turbine">Free-piston gas turbines</a></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/Pratt_%26_Whitney_PT1" title="Pratt & Whitney PT1">PT1</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Turbojet" title="Turbojet">Turbojets</a></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/Pratt_%26_Whitney_J57" title="Pratt & Whitney J57">JT3C</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J75" title="Pratt & Whitney J75">JT4A</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J42" class="mw-redirect" title="Pratt & Whitney J42">JT6</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J48" title="Pratt & Whitney J48">JT7</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J52" title="Pratt & Whitney J52">JT8A</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_J91&action=edit&redlink=1" class="new" title="Pratt & Whitney J91 (page does not exist)">JT9</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J58" title="Pratt & Whitney J58">JT11</a></li> <li><a href="/wiki/Pratt_%26_Whitney_JT12" title="Pratt & Whitney JT12">JT12</a></li></ul> <ul><li><a href="/wiki/Pratt_%26_Whitney_J42" class="mw-redirect" title="Pratt & Whitney J42">J42</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J48" title="Pratt & Whitney J48">J48</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J52" title="Pratt & Whitney J52">J52</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J57" title="Pratt & Whitney J57">J57</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J58" title="Pratt & Whitney J58">J58</a></li> <li><a href="/wiki/Pratt_%26_Whitney_JT12" title="Pratt & Whitney JT12">J60</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J75" title="Pratt & Whitney J75">J75</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_J91&action=edit&redlink=1" class="new" title="Pratt & Whitney J91 (page does not exist)">J91</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Turbofan" title="Turbofan">Turbofans</a></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/Engine_Alliance_GP7000" title="Engine Alliance GP7000">GP7000</a>†</li> <li><a href="/wiki/Pratt_%26_Whitney_JT3D" title="Pratt & Whitney JT3D">JT3D</a></li> <li><a href="/wiki/Pratt_%26_Whitney_J75#Design_and_development" title="Pratt & Whitney J75">JT4D</a></li> <li><a href="/wiki/Pratt_%26_Whitney_JT8D" title="Pratt & Whitney JT8D">JT8D</a></li> <li><a href="/wiki/Pratt_%26_Whitney_JT9D" title="Pratt & Whitney JT9D">JT9D</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_JTF10&action=edit&redlink=1" class="new" title="Pratt & Whitney JTF10 (page does not exist)">JTF10</a></li> <li><a href="/wiki/Pratt_%26_Whitney_TF30" title="Pratt & Whitney TF30">JTF10A</a></li> <li><a href="/wiki/Pratt_%26_Whitney_PW2000" title="Pratt & Whitney PW2000">JT10D</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_JTF14&action=edit&redlink=1" class="new" title="Pratt & Whitney JTF14 (page does not exist)">JTF14</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_JTF16&action=edit&redlink=1" class="new" title="Pratt & Whitney JTF16 (page does not exist)">JTF16</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_JTF17&action=edit&redlink=1" class="new" title="Pratt & Whitney JTF17 (page does not exist)">JTF17</a></li> <li><a href="/wiki/Pratt_%26_Whitney_F100" title="Pratt & Whitney F100">JTF22</a></li> <li><a href="/wiki/Pratt_%26_Whitney_PW1000G" title="Pratt & Whitney PW1000G">PW1000G</a></li> <li><a href="/wiki/Pratt_%26_Whitney_PW1120" title="Pratt & Whitney PW1120">PW1120</a></li> <li><a href="/wiki/Pratt_%26_Whitney_PW2000" title="Pratt & Whitney PW2000">PW2000</a></li> <li><a href="/wiki/Pratt_%26_Whitney_PW4000" title="Pratt & Whitney PW4000">PW4000</a></li> <li><a href="/wiki/Pratt_%26_Whitney_F119" title="Pratt & Whitney F119">PW5000</a></li> <li><a href="/wiki/Pratt_%26_Whitney_PW6000" title="Pratt & Whitney PW6000">PW6000</a></li> <li><a href="/wiki/MTU/Pratt_%26_Whitney_RTF-180" title="MTU/Pratt & Whitney RTF-180">RTF-180</a>†</li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_STF200&action=edit&redlink=1" class="new" title="Pratt & Whitney STF200 (page does not exist)">STF200</a></li> <li><a href="/wiki/IAE_SuperFan" title="IAE SuperFan">SuperFan</a>†</li> <li><a href="/wiki/IAE_V2500" title="IAE V2500">V2500</a>†</li></ul> <ul><li><a href="/wiki/Pratt_%26_Whitney_F100" title="Pratt & Whitney F100">F100</a></li> <li><a href="/wiki/Pratt_%26_Whitney_JT9D" title="Pratt & Whitney JT9D">F105</a></li> <li><a href="/wiki/Pratt_%26_Whitney_PW2000" title="Pratt & Whitney PW2000">F117</a></li> <li><a href="/wiki/Pratt_%26_Whitney_F119" title="Pratt & Whitney F119">F119</a></li> <li><a href="/wiki/Pratt_%26_Whitney_F135" title="Pratt & Whitney F135">F135</a></li> <li><a href="/wiki/Pratt_%26_Whitney_F401" title="Pratt & Whitney F401">F401</a></li> <li><a href="/wiki/Volvo_RM8" title="Volvo RM8">RM8</a>†</li> <li><a href="/wiki/Pratt_%26_Whitney_TF30" title="Pratt & Whitney TF30">TF30</a></li> <li><a href="/wiki/Pratt_%26_Whitney_JT3D" title="Pratt & Whitney JT3D">TF33</a></li> <li><a href="/wiki/Pratt_%26_Whitney_XA101" title="Pratt & Whitney XA101">XA101</a></li> <li><a href="/wiki/Pratt_%26_Whitney_XA103" title="Pratt & Whitney XA103">XA103</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Turboprop" title="Turboprop">Turboprops</a>/<a href="/wiki/Turboshaft" title="Turboshaft">Turboshafts</a></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/Avco/Pratt_%26_Whitney_T800" title="Avco/Pratt & Whitney T800">APW34</a>†</li> <li><a href="/wiki/Pratt_%26_Whitney_T73" title="Pratt & Whitney T73">JFTD12</a></li> <li><a href="/wiki/Pratt_%26_Whitney_T34" title="Pratt & Whitney T34">PT2</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_T52&action=edit&redlink=1" class="new" title="Pratt & Whitney T52 (page does not exist)">PT3</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_XT45&action=edit&redlink=1" class="new" title="Pratt & Whitney XT45 (page does not exist)">PT4</a></li> <li><a href="/wiki/Pratt_%26_Whitney_XT57" title="Pratt & Whitney XT57">PT5</a></li></ul> <ul><li><a href="/wiki/Pratt_%26_Whitney_T34" title="Pratt & Whitney T34">T34</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_XT45&action=edit&redlink=1" class="new" title="Pratt & Whitney XT45 (page does not exist)">XT45</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_T52&action=edit&redlink=1" class="new" title="Pratt & Whitney T52 (page does not exist)">T52</a></li> <li><a href="/wiki/Pratt_%26_Whitney_XT57" title="Pratt & Whitney XT57">XT57</a></li> <li><a href="/wiki/Pratt_%26_Whitney_T73" title="Pratt & Whitney T73">T73</a></li> <li><a href="/wiki/Avco/Pratt_%26_Whitney_T800" title="Avco/Pratt & Whitney T800">T800-APW</a>†</li> <li><a href="/wiki/ATEC_T900" title="ATEC T900">T900</a>†</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Propfan" title="Propfan">Propfans</a></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/Pratt_%26_Whitney/Allison_578-DX" title="Pratt & Whitney/Allison 578-DX">578-DX</a>†</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Rocket_engines" class="mw-redirect" title="Rocket engines">Rocket engines</a></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/RL10" title="RL10">RL10</a></li> <li><a href="/wiki/Pratt_%26_Whitney_XLR-129" title="Pratt & Whitney XLR-129">XLR-129</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Aeroderivative_gas_turbine_engine" class="mw-redirect" title="Aeroderivative gas turbine engine">Aeroderivative gas <br /> turbine engines</a></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="/w/index.php?title=Pratt_%26_Whitney_GG3&action=edit&redlink=1" class="new" title="Pratt & Whitney GG3 (page does not exist)">GG3/FT3</a></li> <li><a href="/wiki/Pratt_%26_Whitney_GG4" title="Pratt & Whitney GG4">GG4/FT4</a></li> <li><a href="/w/index.php?title=Pratt_%26_Whitney_FT8&action=edit&redlink=1" class="new" title="Pratt & Whitney FT8 (page does not exist)">FT8</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Subsidiaries</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/Pratt_%26_Whitney_Canada" title="Pratt & Whitney Canada">Pratt & Whitney Canada</a></li> <li><a href="/wiki/Pratt_%26_Whitney_Rocketdyne" title="Pratt & Whitney Rocketdyne">Pratt & Whitney Rocketdyne</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Key people</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/Leonard_S._Hobbs" title="Leonard S. Hobbs">Leonard S. Hobbs</a></li> <li><a href="/wiki/George_J._Mead" title="George J. Mead">George J. Mead</a></li> <li><a href="/w/index.php?title=Wright_Parkins&action=edit&redlink=1" class="new" title="Wright Parkins (page does not exist)">Wright Parkins</a></li> <li><a href="/w/index.php?title=Perry_Pratt&action=edit&redlink=1" class="new" title="Perry Pratt (page does not exist)">Perry Pratt</a></li> <li><a href="/wiki/Frederick_Rentschler" title="Frederick Rentschler">Frederick Rentschler</a></li> <li><a href="/wiki/Richard_S%C3%B6derberg" title="Richard Söderberg">Richard "Dick" Soderberg</a></li> <li><a href="/w/index.php?title=Andrew_Willgoos&action=edit&redlink=1" class="new" title="Andrew Willgoos (page does not exist)">Andrew Willgoos</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>† <a href="/wiki/Template:Joint_development_aeroengines" title="Template:Joint development aeroengines">Joint development aeroengines</a> <br /> <b>See also:</b> <a href="/wiki/Template:Pratt_%26_Whitney_Canada_aeroengines" title="Template:Pratt & Whitney Canada aeroengines">Pratt & Whitney Canada aeroengines</a></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="Fiat_aircraft_engines" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed 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:Fiat_aeroengines" title="Template:Fiat aeroengines"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Fiat_aeroengines" title="Template talk:Fiat aeroengines"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Fiat_aeroengines" title="Special:EditPage/Template:Fiat aeroengines"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Fiat_aircraft_engines" style="font-size:114%;margin:0 4em"><a href="/wiki/Fiat_Aviazione" title="Fiat Aviazione">Fiat</a> <a href="/wiki/Aircraft_engine" title="Aircraft engine">aircraft engines</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Reciprocating_engine" title="Reciprocating engine">Piston engines</a></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/Fiat_A.10" title="Fiat A.10">A.10</a></li> <li><a href="/wiki/Fiat_A.12" title="Fiat A.12">A.12</a></li> <li><a href="/wiki/Fiat_A.14" title="Fiat A.14">A.14</a></li> <li><a href="/w/index.php?title=Fiat_A.15&action=edit&redlink=1" class="new" title="Fiat A.15 (page does not exist)">A.15</a></li> <li><a href="/w/index.php?title=Fiat_A.18&action=edit&redlink=1" class="new" title="Fiat A.18 (page does not exist)">A.18</a></li> <li><a href="/wiki/Fiat_A.20" title="Fiat A.20">A.20</a></li> <li><a href="/wiki/Fiat_A.22" title="Fiat A.22">A.22</a></li> <li><a href="/wiki/Fiat_A.24" title="Fiat A.24">A.24</a></li> <li><a href="/wiki/Fiat_A.25" title="Fiat A.25">A.25</a></li> <li><a href="/wiki/Fiat_A.30" title="Fiat A.30">A.30</a></li> <li><a href="/wiki/Fiat_A.50" title="Fiat A.50">A.50</a></li> <li><a href="/wiki/Fiat_A.53" title="Fiat A.53">A.53</a></li> <li><a href="/wiki/Fiat_A.54" title="Fiat A.54">A.54</a></li> <li><a href="/wiki/Fiat_A.55" title="Fiat A.55">A.55</a></li> <li><a href="/w/index.php?title=Fiat_A.58&action=edit&redlink=1" class="new" title="Fiat A.58 (page does not exist)">A.58</a></li> <li><a class="mw-selflink selflink">A.59</a></li> <li><a href="/wiki/Fiat_A.60" title="Fiat A.60">A.60</a></li> <li><a href="/wiki/Fiat_A.70" title="Fiat A.70">A.70</a></li> <li><a href="/wiki/Fiat_A.74" title="Fiat A.74">A.74</a></li> <li><a href="/w/index.php?title=Fiat_A.76&action=edit&redlink=1" class="new" title="Fiat A.76 (page does not exist)">A.76</a></li> <li><a href="/w/index.php?title=Fiat_A.78&action=edit&redlink=1" class="new" title="Fiat A.78 (page does not exist)">A.78</a></li> <li><a href="/wiki/Fiat_A.80" title="Fiat A.80">A.80</a></li> <li><a href="/wiki/Fiat_A.82" title="Fiat A.82">A.82</a></li> <li><a href="/wiki/Fiat_AN.1" title="Fiat AN.1">AN.1</a></li> <li><a href="/wiki/Fiat_AS.2" title="Fiat AS.2">AS.2</a></li> <li><a href="/wiki/Fiat_AS.3" title="Fiat AS.3">AS.3</a></li> <li><a href="/wiki/Fiat_AS.5" title="Fiat AS.5">AS.5</a></li> <li><a href="/wiki/Fiat_AS.6" title="Fiat AS.6">AS.6</a></li> <li><a href="/wiki/Fiat_AS.8" title="Fiat AS.8">AS.8</a></li> <li><a href="/w/index.php?title=Fiat_SA8/75&action=edit&redlink=1" class="new" title="Fiat SA8/75 (page does not exist)">SA8/75</a></li> <li><a href="/w/index.php?title=Fiat_S.55&action=edit&redlink=1" class="new" title="Fiat S.55 (page does not exist)">S.55</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Turbine_engines" class="mw-redirect" title="Turbine engines">Turbine engines</a></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="/w/index.php?title=Fiat_4002&action=edit&redlink=1" class="new" title="Fiat 4002 (page does not exist)">4002</a></li> <li><a href="/w/index.php?title=Fiat_4004&action=edit&redlink=1" class="new" title="Fiat 4004 (page does not exist)">4004</a></li> <li><a href="/w/index.php?title=Fiat_4301&action=edit&redlink=1" class="new" title="Fiat 4301 (page does not exist)">4301</a></li> <li><a href="/wiki/Fiat_4700" title="Fiat 4700">4700</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="United_States_military_piston_aircraft_engine_designation_system" 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_military_piston_aeroengines" title="Template:US military piston aeroengines"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:US_military_piston_aeroengines" title="Template talk:US military piston aeroengines"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:US_military_piston_aeroengines" title="Special:EditPage/Template:US military piston aeroengines"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="United_States_military_piston_aircraft_engine_designation_system" style="font-size:114%;margin:0 4em"><a href="/wiki/United_States_Department_of_Defense" title="United States Department of Defense">United States military</a> piston aircraft engine <a href="/wiki/United_States_military_aircraft_engine_designations" title="United States military aircraft engine designations">designation system</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/H_engine" title="H engine">H (four-bank <br /> H-configuration inline)</a></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/Curtiss_H-1640" class="mw-redirect" title="Curtiss H-1640">H-1640</a></li> <li><a href="/wiki/Pratt_%26_Whitney_X-1800" title="Pratt & Whitney X-1800">XH-2240</a></li> <li><a href="/wiki/Lycoming_XH-2470" title="Lycoming XH-2470">XH-2470</a></li> <li><a href="/wiki/Pratt_%26_Whitney_X-1800" title="Pratt & Whitney X-1800">XH-2600</a></li> <li><a href="/wiki/Pratt_%26_Whitney_XH-3130" title="Pratt & Whitney XH-3130">XH-3130</a></li> <li><a href="/wiki/Pratt_%26_Whitney_XH-3130" title="Pratt & Whitney XH-3130">XH-3730</a></li> <li><a href="/w/index.php?title=Menasco_H-4070&action=edit&redlink=1" class="new" title="Menasco H-4070 (page does not exist)">H-4070</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/V_engine" title="V engine">IV (inverted-V inline)</a></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/Continental_XI-1430" title="Continental XI-1430">IV-1430</a></li> <li><a href="/w/index.php?title=Menasco_XIV-2040&action=edit&redlink=1" class="new" title="Menasco XIV-2040 (page does not exist)">IV-2040</a></li> <li><a href="/wiki/Chrysler_IV-2220" title="Chrysler IV-2220">IV-2220</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Straight_engine" title="Straight engine">L (single-bank inline)</a></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="/w/index.php?title=Martin_L-330&action=edit&redlink=1" class="new" title="Martin L-330 (page does not exist)">L-330</a></li> <li><a href="/wiki/Menasco_Pirate" title="Menasco Pirate">L-365</a></li> <li><a href="/wiki/De_Havilland_Gipsy_Major" title="De Havilland Gipsy Major">L-375</a></li> <li><a href="/w/index.php?title=Ranger_6-390B&action=edit&redlink=1" class="new" title="Ranger 6-390B (page does not exist)">L-390</a></li> <li><a href="/w/index.php?title=Ranger_6-410B-2&action=edit&redlink=1" class="new" title="Ranger 6-410B-2 (page does not exist)">L-410</a></li> <li><a href="/wiki/Ranger_L-440" title="Ranger L-440">L-440</a></li> <li><a href="/w/index.php?title=Miller_44-255&action=edit&redlink=1" class="new" title="Miller 44-255 (page does not exist)">L-510</a></li> <li><a href="/wiki/Liberty_L-8" title="Liberty L-8">L-825</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Flat_engine" title="Flat engine">O (opposed)</a></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="/w/index.php?title=Righter_O-15&action=edit&redlink=1" class="new" title="Righter O-15 (page does not exist)">O-15</a></li> <li><a href="/w/index.php?title=Muncie_Gear_O-40&action=edit&redlink=1" class="new" title="Muncie Gear O-40 (page does not exist)">O-40</a></li> <li><a href="/wiki/Righter_O-45" title="Righter O-45">O-45</a></li> <li><a href="/w/index.php?title=McCulloch_O-90&action=edit&redlink=1" class="new" title="McCulloch O-90 (page does not exist)">O-90</a></li> <li><a href="/w/index.php?title=McCulloch_O-100&action=edit&redlink=1" class="new" title="McCulloch O-100 (page does not exist)">O-100</a></li> <li><a href="/wiki/Lycoming_O-145" title="Lycoming O-145">O-145</a></li> <li><a href="/wiki/Franklin_O-150" title="Franklin O-150">O-150</a></li> <li><a href="/wiki/Continental_O-170" title="Continental O-170">O-170</a></li> <li><a href="/wiki/Franklin_O-175" title="Franklin O-175">O-175</a></li> <li><a href="/wiki/Franklin_O-175" title="Franklin O-175">O-180</a></li> <li><a href="/wiki/Continental_O-190" title="Continental O-190">O-190</a></li> <li><a href="/wiki/Continental_O-200" title="Continental O-200">O-200 (C)</a></li> <li><a href="/wiki/Franklin_O-200" title="Franklin O-200">O-200 (F)</a></li> <li><a href="/wiki/Continental_O-200" title="Continental O-200">O-205</a></li> <li><a href="/wiki/Lycoming_O-235" title="Lycoming O-235">O-235</a></li> <li><a href="/wiki/Lycoming_O-290" title="Lycoming O-290">O-290</a></li> <li><a href="/wiki/Franklin_O-300" title="Franklin O-300">O-300</a></li> <li><a href="/wiki/Franklin_O-335" title="Franklin O-335">O-335</a></li> <li><a href="/wiki/Continental_IO-360" title="Continental IO-360">O-360 (C)</a></li> <li><a href="/wiki/Lycoming_O-360" title="Lycoming O-360">O-360 (L)</a></li> <li><a href="/wiki/Franklin_O-405" title="Franklin O-405">O-405</a></li> <li><a href="/wiki/Franklin_O-425" title="Franklin O-425">O-425</a></li> <li><a href="/wiki/Lycoming_O-435" title="Lycoming O-435">O-435</a></li> <li><a href="/wiki/Continental_O-470" title="Continental O-470">O-470</a></li> <li><a href="/wiki/Lycoming_O-480" title="Lycoming O-480">O-480</a></li> <li><a href="/wiki/Continental_O-520" class="mw-redirect" title="Continental O-520">O-520</a></li> <li><a href="/wiki/Franklin_O-540" title="Franklin O-540">O-540 (F)</a></li> <li><a href="/wiki/Lycoming_O-540" title="Lycoming O-540">O-540 (L)</a></li> <li><a href="/wiki/Continental_IO-550" title="Continental IO-550">O-550</a></li> <li><a href="/wiki/Lycoming_GSO-580" title="Lycoming GSO-580">O-580</a></li> <li><a href="/wiki/Franklin_O-805" title="Franklin O-805">O-805</a></li> <li><a href="/wiki/Lycoming_O-1230" title="Lycoming O-1230">O-1230</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Radial_engine" title="Radial engine">R (radial)</a></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="/w/index.php?title=General_Motors_Research_X-250&action=edit&redlink=1" class="new" title="General Motors Research X-250 (page does not exist)">R-250</a></li> <li><a href="/w/index.php?title=LeBlond_5G&action=edit&redlink=1" class="new" title="LeBlond 5G (page does not exist)">R-265</a></li> <li><a href="/w/index.php?title=Lambert_R-270&action=edit&redlink=1" class="new" title="Lambert R-270 (page does not exist)">R-270</a></li> <li><a href="/w/index.php?title=LeBlond_7G&action=edit&redlink=1" class="new" title="LeBlond 7G (page does not exist)">R-370 (LB)</a></li> <li><a href="/wiki/Kinner_K-5" title="Kinner K-5">R-370 (K)</a></li> <li><a href="/wiki/Warner_Scarab" title="Warner Scarab">R-420</a></li> <li><a href="/wiki/Kinner_B-5" title="Kinner B-5">R-440</a></li> <li><a href="/wiki/Warner_Scarab" title="Warner Scarab">R-500</a></li> <li><a href="/wiki/Wright_R-540_Whirlwind" title="Wright R-540 Whirlwind">R-540 (W)</a></li> <li><a href="/wiki/Kinner_R-5" title="Kinner R-5">R-540 (K)</a></li> <li><a href="/w/index.php?title=Continental_A70&action=edit&redlink=1" class="new" title="Continental A70 (page does not exist)">R-545</a></li> <li><a href="/wiki/Warner_Scarab" title="Warner Scarab">R-550</a></li> <li><a href="/wiki/Curtiss_R-600_Challenger" title="Curtiss R-600 Challenger">R-600</a></li> <li><a href="/wiki/Continental_R-670" title="Continental R-670">R-670</a></li> <li><a href="/wiki/Lycoming_R-680" title="Lycoming R-680">R-680</a></li> <li><a href="/wiki/Kinner_C-5" title="Kinner C-5">R-720</a></li> <li><a href="/wiki/Jacobs_R-755" title="Jacobs R-755">R-755</a></li> <li><a href="/wiki/Wright_R-760_Whirlwind" title="Wright R-760 Whirlwind">R-760</a></li> <li><a href="/wiki/Wright_R-790_Whirlwind" title="Wright R-790 Whirlwind">R-790</a></li> <li><a href="/wiki/Jacobs_R-830" title="Jacobs R-830">R-830</a></li> <li><a href="/wiki/Jacobs_R-915" title="Jacobs R-915">R-915</a></li> <li><a href="/wiki/Wright_R-975_Whirlwind" title="Wright R-975 Whirlwind">R-975</a></li> <li><a href="/w/index.php?title=Packard_Diesel&action=edit&redlink=1" class="new" title="Packard Diesel (page does not exist)">DR-980</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-985_Wasp_Junior" title="Pratt & Whitney R-985 Wasp Junior">R-985</a></li> <li><a href="/w/index.php?title=Kinner_C-7&action=edit&redlink=1" class="new" title="Kinner C-7 (page does not exist)">R-1044</a></li> <li><a href="/wiki/Wright_R-1300_Cyclone_7" title="Wright R-1300 Cyclone 7">R-1300</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1340_Wasp" title="Pratt & Whitney R-1340 Wasp">R-1340</a></li> <li><a href="/wiki/Curtiss_R-1454" class="mw-redirect" title="Curtiss R-1454">R-1454</a></li> <li><a href="/wiki/Wright_Whirlwind_series" title="Wright Whirlwind series">R-1510</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1535_Twin_Wasp_Junior" title="Pratt & Whitney R-1535 Twin Wasp Junior">R-1535</a></li> <li><a href="/wiki/Curtiss_H-1640" class="mw-redirect" title="Curtiss H-1640">R-1640</a></li> <li><a href="/wiki/Wright_Whirlwind_series" title="Wright Whirlwind series">R-1670</a></li> <li><a class="mw-selflink selflink">R-1690</a></li> <li><a href="/wiki/Wright_Cyclone_series" title="Wright Cyclone series">R-1750</a></li> <li><a href="/wiki/Wright_R-1820_Cyclone" title="Wright R-1820 Cyclone">R-1820</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1830_Twin_Wasp" title="Pratt & Whitney R-1830 Twin Wasp">R-1830</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-1860_Hornet_B" title="Pratt & Whitney R-1860 Hornet B">R-1860</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2000_Twin_Wasp" title="Pratt & Whitney R-2000 Twin Wasp">R-2000</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2060_Yellow_Jacket" title="Pratt & Whitney R-2060 Yellow Jacket">R-2060</a></li> <li><a href="/wiki/Wright_R-2160_Tornado" title="Wright R-2160 Tornado">R-2160</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2180" title="Pratt & Whitney R-2180">R-2180</a></li> <li><a href="/wiki/Wright_R-2600_Twin_Cyclone" title="Wright R-2600 Twin Cyclone">R-2600</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-2800_Double_Wasp" title="Pratt & Whitney R-2800 Double Wasp">R-2800</a></li> <li><a href="/wiki/Wright_R-3350_Duplex-Cyclone" title="Wright R-3350 Duplex-Cyclone">R-3350</a></li> <li><a href="/wiki/Wright_R-4090_Cyclone_22" title="Wright R-4090 Cyclone 22">R-4090</a></li> <li><a href="/wiki/Pratt_%26_Whitney_R-4360_Wasp_Major" title="Pratt & Whitney R-4360 Wasp Major">R-4360</a></li> <li><a href="/wiki/Lycoming_XR-7755" title="Lycoming XR-7755">XR-7755</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/V_engine" title="V engine">V (upright-V inline)</a></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/Hispano-Suiza_8" title="Hispano-Suiza 8">V-720</a></li> <li><a href="/wiki/Curtiss_D-12" title="Curtiss D-12">V-1150</a></li> <li><a href="/w/index.php?title=Packard_V-1237&action=edit&redlink=1" class="new" title="Packard V-1237 (page does not exist)">V-1237</a></li> <li><a href="/wiki/Curtiss_D-12" title="Curtiss D-12">V-1400</a></li> <li><a href="/w/index.php?title=Continental_V-1440&action=edit&redlink=1" class="new" title="Continental V-1440 (page does not exist)">V-1440</a></li> <li><a href="/w/index.php?title=Wright_V-1460&action=edit&redlink=1" class="new" title="Wright V-1460 (page does not exist)">V-1460</a></li> <li><a href="/w/index.php?title=Curtiss_V-1510&action=edit&redlink=1" class="new" title="Curtiss V-1510 (page does not exist)">V-1510</a></li> <li><a href="/w/index.php?title=Wright_V-1560&action=edit&redlink=1" class="new" title="Wright V-1560 (page does not exist)">V-1560</a></li> <li><a href="/wiki/Curtiss_V-1570" class="mw-redirect" title="Curtiss V-1570">V-1570</a></li> <li><a href="/wiki/Packard_V-1650_Merlin" title="Packard V-1650 Merlin">V-1650 (P)</a></li> <li><a href="/wiki/Allison_V-1710" title="Allison V-1710">V-1710</a></li> <li><a href="/wiki/Wright_T-3_Tornado" title="Wright T-3 Tornado">V-1950</a></li> <li><a href="/wiki/Allison_V-3420" title="Allison V-3420">V-3420</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/V_engine" title="V engine">V (inverted-V inline)</a></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/Ranger_V-770" title="Ranger V-770">V-770</a></li> <li><a href="/wiki/Liberty_L-12" title="Liberty L-12">V-1650 (L)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/V_engine" title="V engine">VG (inverted-V inline)</a></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/Liberty_L-12" title="Liberty L-12">VG-1410</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/W_engine" title="W engine">W (three-bank <br /> W-configuration inline)</a></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="/w/index.php?title=Engineering_Division_W-2779&action=edit&redlink=1" class="new" title="Engineering Division W-2779 (page does not exist)">W-2779</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow hlist" colspan="2"><div> <ul><li><i>See also:</i> <a href="/wiki/Pratt_%26_Whitney_X-1800" title="Pratt & Whitney X-1800">X-1800</a></li> <li><a href="/wiki/Template:US_military_gas_turbine_aeroengines" title="Template:US military gas turbine aeroengines">US military gas turbine aeroengines</a></li> <li><a href="/wiki/Template:Piston_engine_configurations" title="Template:Piston engine configurations">Piston engine configurations</a></li></ul> </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=Pratt_%26_Whitney_R-1690_Hornet&oldid=1181710702">https://en.wikipedia.org/w/index.php?title=Pratt_%26_Whitney_R-1690_Hornet&oldid=1181710702</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:1920s_aircraft_piston_engines" title="Category:1920s aircraft piston engines">1920s aircraft piston engines</a></li><li><a href="/wiki/Category:Aircraft_air-cooled_radial_piston_engines" title="Category:Aircraft air-cooled radial piston engines">Aircraft air-cooled radial piston engines</a></li><li><a href="/wiki/Category:Pratt_%26_Whitney_aircraft_engines" title="Category:Pratt & Whitney aircraft engines">Pratt & Whitney aircraft engines</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Webarchive_template_wayback_links" title="Category:Webarchive template wayback links">Webarchive template wayback links</a></li><li><a href="/wiki/Category:CS1_Russian-language_sources_(ru)" title="Category:CS1 Russian-language sources (ru)">CS1 Russian-language sources (ru)</a></li><li><a href="/wiki/Category:Articles_lacking_in-text_citations_from_April_2018" title="Category:Articles lacking in-text citations from April 2018">Articles lacking in-text citations from April 2018</a></li><li><a href="/wiki/Category:All_articles_lacking_in-text_citations" title="Category:All articles lacking in-text citations">All articles lacking in-text citations</a></li><li><a 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