{"id":200420,"date":"2021-04-14T18:44:00","date_gmt":"2021-04-14T23:44:00","guid":{"rendered":"https:\/\/www.panix.com\/~msaroff\/40years\/2021\/04\/14\/russians-test-pulse-detonation-engine\/"},"modified":"2021-04-14T18:44:00","modified_gmt":"2021-04-14T23:44:00","slug":"russians-test-pulse-detonation-engine","status":"publish","type":"post","link":"https:\/\/www.panix.com\/~msaroff\/40years\/2021\/04\/14\/russians-test-pulse-detonation-engine\/","title":{"rendered":"Russians Test Pulse-Detonation Engine"},"content":{"rendered":"<p><a href=\"https:\/\/i.imgur.com\/iFJ7Ndl.jpg\"><img decoding=\"async\" src=\"https:\/\/i.imgur.com\/iFJ7Ndl.jpg\" style=\"cursor: pointer; float: right; margin: 0px 0px 10px 10px;\" width=\"350\" \/><\/a>Russia&#8217;s United Engine has <a href=\"https:\/\/www.flightglobal.com\/aerospace\/united-engine-tests-spaceplane-pulse-detonation-demonstrator\/143237.article\">has successfully tested a low thrust pulse detonation engine<\/a>.<\/p>\n<p>The short version of what a PDE is is that it is a formed of pulsed propulsion where instead of just burning the fuel (subsonic combustion) it detonates the fuel (supersonic combustion) creating about 50% more specific thrust.&nbsp; (Ratio to thrust to all mass flow through the engine)<\/p>\n<p>Higher specific thrust engines are more efficient, thermodynamics favors constant volume combustion, particularly at higher speeds.<\/p>\n<p>My guess would be that the first real-world application might be as an afterburner, but seeing as how this program is funded by Rostec, they clearly see space applications:<\/p>\n<\/p>\n<blockquote>\n<p><span style=\"color: #2b00fe;\">Russian powerplant specialist United Engine has carried out initial  testing of a pulse-detonation rocket motor which has potential  application to orbital spaceplanes or hypersonic aircraft.<\/span><\/p>\n<p><span style=\"color: #2b00fe;\">Pulse-detonation propulsion combusts fuel and oxidizer using  detonation waves, with relatively few mechanical moving parts, offering a  more efficient thermodynamic cycle than conventional gas turbines.<\/span><\/p>\n<p><span style=\"color: #2b00fe;\">United Engine\u2019s Lyulka design bureau \u2013 part of its Ufa-based UMPO  division \u2013 has established a specific development project for such  powerplants.<\/span><\/p>\n<p><span style=\"color: #2b00fe;\">Russian state technology firm Rostec says the bureau has completed the first stage of tests for a demonstrator engine.<\/span><\/p>\n<p><span style=\"color: #2b00fe;\">\u201cIn some operating modes the powerplant demonstrated up to 50%  increase in specific thrust compared with traditional engines,\u201d it adds,  enabling aircraft range and payload to rise by a factor of 1.3-1.5.<\/span><\/p>\n<p><span style=\"color: #2b00fe;\">Rostec envisions the design being applied to orbital spaceplanes and  other future-generation aircraft operating at supersonic and hypersonic  speeds.<\/span><\/p>\n<\/blockquote>\n<p>I think that this is some seriously neat tech, but much like fusion, its application always seems to be about 10 years away.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Russia&#8217;s United Engine has has successfully tested a low thrust pulse detonation engine. The short version of what a PDE is is that it is a formed of pulsed propulsion where instead of just burning the fuel (subsonic combustion) it detonates the fuel (supersonic combustion) creating about 50% more specific thrust.&nbsp; (Ratio to thrust to &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1007,1128,1033,1025],"tags":[],"class_list":["post-200420","post","type-post","status-publish","format-standard","hentry","category-aviation","category-propulsion","category-russia","category-technology"],"_links":{"self":[{"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/posts\/200420"}],"collection":[{"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/comments?post=200420"}],"version-history":[{"count":0,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/posts\/200420\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/media?parent=200420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/categories?post=200420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/tags?post=200420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}