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class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Tumansky R-11</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. 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mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A2%D1%83%D0%BC%D0%B0%D0%BD%D1%81%D0%BA%D0%B8_%D0%A0-11" title="Тумански Р-11 – Bulgarian" lang="bg" hreflang="bg" data-title="Тумански Р-11" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Tumanskij_R-11" title="Tumanskij R-11 – Czech" lang="cs" hreflang="cs" data-title="Tumanskij R-11" 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/Tumanski_R-11" title="Tumanski R-11 – German" lang="de" hreflang="de" data-title="Tumanski R-11" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Tumansky_R-11" title="Tumansky R-11 – Spanish" lang="es" hreflang="es" data-title="Tumansky R-11" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Toumanski_R-11" title="Toumanski R-11 – French" lang="fr" hreflang="fr" data-title="Toumanski R-11" 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/Tumanskij_R-11" title="Tumanskij R-11 – Italian" lang="it" hreflang="it" data-title="Tumanskij R-11" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Tumanszkij_R%E2%80%9311" title="Tumanszkij R–11 – Hungarian" lang="hu" hreflang="hu" data-title="Tumanszkij R–11" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%84%E3%83%9E%E3%83%B3%E3%82%B9%E3%82%AD%E3%83%BC_R-11" title="ツマンスキー R-11 – Japanese" lang="ja" hreflang="ja" data-title="ツマンスキー R-11" 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-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Tumansky_R-11" title="Tumansky R-11 – Portuguese" lang="pt" hreflang="pt" data-title="Tumansky R-11" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Tumansky_R-11" title="Tumansky R-11 – Romanian" lang="ro" hreflang="ro" data-title="Tumansky R-11" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A011-300" title="Р11-300 – Russian" lang="ru" hreflang="ru" data-title="Р11-300" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Tumansky_R-11" title="Tumansky R-11 – Vietnamese" lang="vi" hreflang="vi" data-title="Tumansky R-11" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" 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class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/Tumansky_R-11.jpg/450px-Tumansky_R-11.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/40/Tumansky_R-11.jpg/600px-Tumansky_R-11.jpg 2x" data-file-width="1200" data-file-height="797" /></a></span> </td></tr> <tr> <td colspan="2" style="border-bottom: 1px solid #aaa;text-align:center;">Preserved Tumansky R-11 turbojet engine at the <a href="/wiki/Polish_Aviation_Museum" title="Polish Aviation Museum">Polish Aviation Museum</a> </td></tr> <tr> <th>Type </th> <td><a href="/wiki/Turbojet" title="Turbojet">Turbojet</a> </td></tr> <tr> <th><span class="nowrap">National origin</span> </th> <td>Soviet Union </td></tr> <tr> <th>Manufacturer </th> <td><a href="/wiki/Tumansky" class="mw-redirect" title="Tumansky">Tumansky</a> </td></tr> <tr> <th>First run </th> <td>1956 </td></tr> <tr> <th><span class="nowrap">Major applications</span> </th> <td><a href="/wiki/Sukhoi_Su-15" title="Sukhoi Su-15">Sukhoi Su-15</a> <br /><a href="/wiki/Mikoyan-Gurevich_MiG-21" title="Mikoyan-Gurevich MiG-21">Mikoyan-Gurevich MiG-21</a> <br /><a href="/wiki/Yakovlev_Yak-28" title="Yakovlev Yak-28">Yakovlev Yak-28</a> </td></tr> <tr> <th><span class="nowrap">Number built</span> </th> <td>20,900 </td></tr> </tbody></table> <p>The <b>Tumansky R-11</b> (initially AM-11) is a <a href="/wiki/Soviet" class="mw-redirect" title="Soviet">Soviet</a> <a href="/wiki/Cold_War" title="Cold War">Cold War</a>-era <a href="/wiki/Turbojet" title="Turbojet">turbojet</a> engine. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Design_and_development">Design and development</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tumansky_R-11&action=edit&section=1" title="Edit section: Design and development"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Tumansky" class="mw-redirect" title="Tumansky">Tumansky</a> R-11 was developed by <a href="/wiki/Alexander_Mikulin" class="mw-redirect" title="Alexander Mikulin">A.A. Mikulin</a>, <a href="/wiki/Sergei_Tumansky" class="mw-redirect" title="Sergei Tumansky">Sergei Tumansky</a>, and <a href="/w/index.php?title=B.S._Stechkin&action=edit&redlink=1" class="new" title="B.S. Stechkin (page does not exist)">B.S. Stechkin</a> as a twin-spool <a href="/wiki/Axial-flow" class="mw-redirect" title="Axial-flow">axial-flow</a> high-altitude non-afterburning turbojet for <a href="/wiki/Yakovlev_Yak-25" title="Yakovlev Yak-25">Yakovlev Yak-25</a>RV reconnaissance aircraft. This engine was the first Soviet twin-spool turbojet. It was first run in early 1956<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> and was later employed in some variants of the <a href="/wiki/Yakovlev_Yak-26" title="Yakovlev Yak-26">Yakovlev Yak-26</a> and <a href="/wiki/Yakovlev_Yak-27" title="Yakovlev Yak-27">Yakovlev Yak-27</a>, as well as the <a href="/wiki/Yakovlev_Yak-28" title="Yakovlev Yak-28">Yak-28</a>.<sup id="cite_ref-vs_2-0" class="reference"><a href="#cite_note-vs-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The R-11's basic design was very successful and it was later developed into the <a href="/wiki/Tumansky_R-13" title="Tumansky R-13">Tumansky R-13</a> and <a href="/wiki/Tumansky_R-25" title="Tumansky R-25">Tumansky R-25</a> along with the experimental <a href="/wiki/Tumansky_R-21" title="Tumansky R-21">Tumansky R-21</a>. A total of 20,900 R-11 engines were built. </p> <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=Tumansky_R-11&action=edit&section=2" title="Edit section: Variants"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>R-11V-300 - first production version, high-altitude, non-afterburning</li> <li>R-11F-300 (R-37F) - afterburning version, entered production in 1956, used on <a href="/wiki/MiG-21" class="mw-redirect" title="MiG-21">MiG-21</a>F, P and U.</li> <li>R-11AF-300 - improved version for <a href="/wiki/Yakovlev_Yak-28" title="Yakovlev Yak-28">Yakovlev Yak-28</a>B, L and U.</li> <li>R-11F2-300 - new compressor, afterburner and nozzle, used on <a href="/wiki/MiG-21" class="mw-redirect" title="MiG-21">MiG-21</a>P, PF and FL.</li> <li>R-11AF2-300 - R-11F2-300 adapted for <a href="/wiki/Yakovlev_Yak-28" title="Yakovlev Yak-28">Yakovlev Yak-28</a>I, R and P.</li> <li>R-11F2S-300 - upgraded version for <a href="/wiki/MiG-21" class="mw-redirect" title="MiG-21">MiG-21</a>PFM, PFS, S, U and UM, and for <a href="/wiki/Sukhoi_Su-15" title="Sukhoi Su-15">Sukhoi Su-15</a>, UT and UM.</li> <li><b>Shenyang WP-7</b>, Chinese license built copies of the R-11</li></ul> <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=Tumansky_R-11&action=edit&section=3" title="Edit section: Applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Sukhoi_Su-15" title="Sukhoi Su-15">Sukhoi Su-15</a></li> <li><a href="/wiki/Mikoyan-Gurevich_MiG-21" title="Mikoyan-Gurevich MiG-21">Mikoyan-Gurevich MiG-21</a></li> <li><a href="/wiki/Yakovlev_Yak-25" title="Yakovlev Yak-25">Yakovlev Yak-25</a></li> <li><a href="/wiki/Yakovlev_Yak-26" title="Yakovlev Yak-26">Yakovlev Yak-26</a></li> <li><a href="/wiki/Yakovlev_Yak-27" title="Yakovlev Yak-27">Yakovlev Yak-27</a></li> <li><a href="/wiki/Yakovlev_Yak-28" title="Yakovlev Yak-28">Yakovlev Yak-28</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Specifications_(R-11F2S-300)"><span id="Specifications_.28R-11F2S-300.29"></span>Specifications (R-11F2S-300)</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tumansky_R-11&action=edit&section=4" title="Edit section: Specifications (R-11F2S-300)"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading4"><h4 id="General_characteristics">General characteristics</h4></div> <ul><li><b>Type:</b> Afterburning <a href="/wiki/Turbojet" title="Turbojet">turbojet</a></li> <li><b>Length:</b> 4,600 mm (181.1 in)</li> <li><b>Diameter:</b> 906 mm (35.7 in)</li> <li><b>Dry weight:</b> 1,124 kg (2,477 lb)</li></ul> <div class="mw-heading mw-heading4"><h4 id="Components">Components</h4></div> <ul><li><b>Compressor:</b> <a href="/wiki/Axial_compressor" title="Axial compressor">Axial compressor</a>, 3-stage LP, 3-stage HP</li> <li><b><a href="/wiki/Turbine" title="Turbine">Turbine</a>:</b> one stage LP, one stage HP</li></ul> <div class="mw-heading mw-heading4"><h4 id="Performance">Performance</h4></div> <ul><li><b>Maximum <a href="/wiki/Thrust" title="Thrust">thrust</a>:</b> <br /></li> <li>38.7 kN (8,708 lbf) military power</li> <li>60.6 kN (13,635 lbf) with afterburner</li> <li><b><a href="/wiki/Overall_pressure_ratio" title="Overall pressure ratio">Overall pressure ratio</a>:</b> 8.9:1</li> <li><b>Turbine inlet temperature:</b> 955 °C (1,750 °F)</li> <li><b><a href="/wiki/Thrust_specific_fuel_consumption" class="mw-redirect" title="Thrust specific fuel consumption">Specific fuel consumption</a>:</b> <br /></li> <li>97 kg/(h·kN) (0.95 lb/(h·lbf)) at idle</li> <li>242 kg/(h·kN) (2.37 lb/(h·lbf)) with afterburner</li> <li><b><a href="/wiki/Thrust-to-weight_ratio" title="Thrust-to-weight ratio">Thrust-to-weight ratio</a>:</b> 3.51; 5.50 with afterburner.</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=Tumansky_R-11&action=edit&section=5" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <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=Tumansky_R-11&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="Citations">Citations</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tumansky_R-11&action=edit&section=7" title="Edit section: Citations"><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">Gunston 1989, p.167.</span> </li> <li id="cite_note-vs-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-vs_2-0">^</a></b></span> <span class="reference-text">Goebel, Greg. <a rel="nofollow" class="external text" href="http://www.airvectors.net/avyak25.html">"The Yakovlev Yak-25 & Yak-28."</a> AirVectors. Retrieved: 17 July 2012.</span> </li> </ol></div></div> <div class="mw-heading mw-heading3"><h3 id="Sources">Sources</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tumansky_R-11&action=edit&section=8" title="Edit section: Sources"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin" style=""> <ul><li><a href="/wiki/Bill_Gunston" title="Bill Gunston">Gunston, Bill</a>. <i>World Encyclopedia of Aero Engines</i>. Cambridge, England. Patrick Stephens Limited, 1989. <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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