{"id":16131,"date":"2024-04-12T10:07:21","date_gmt":"2024-04-12T10:07:21","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16131"},"modified":"2024-04-12T10:07:21","modified_gmt":"2024-04-12T10:07:21","slug":"transpiration-cooling-under-supersonic-rocket-engine-nozzle-flow-conditions","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/04\/12\/transpiration-cooling-under-supersonic-rocket-engine-nozzle-flow-conditions\/","title":{"rendered":"Transpiration Cooling under Supersonic Rocket Engine Nozzle Flow Conditions"},"content":{"rendered":"\n<p><strong>Jonas Peichl, Markus Selzer, Hannah B\u00f6hrk, Andreas Schwab, Bastian Hammer, Sandra Ludescher, Karl Alexander Heufer<\/strong><\/p>\n\n\n\n<p><strong>DOI Number XXX-YYY-ZZZ<\/strong><\/p>\n\n\n\n<p><strong>Conference Number HiSST-2022-95<\/strong><\/p>\n\n\n\n<p>In a preliminary feasibility study, transpiration cooling in the supersonic flow of a conical laval type<br>nozzle is investigated. Hot gas flow with the flow conditions of a rocket engine nozzle is created via a<br>detonation tube combusting hydrogen and oxygen at a stagnation pressure of 30 bar with a hot gas<br>flow Mach number of Ma = 3.35 at the beginning of the coolant injection. In this context, a variation of<br>the transpired coolant mass flow rate, using helium as a coolant gas, was conducted. Special emphasis<br>is laid on the heat flux reduction on both the transpiration cooled segment as well as the solid nozzle<br>structure in the wake flow. As result, cooling efficiencies of up to 0.85 at the end of the porous sample<br>could be measured. For the creation of an cooling film, it could be shown that comparably high blowing<br>ratios are needed for creating a lasting cooling film.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-95.pdf\" data-type=\"link\" data-id=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-95.pdf\">Read the full paper > <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Jonas Peichl, Markus Selzer, Hannah B\u00f6hrk, Andreas Schwab, Bastian Hammer, Sandra Ludescher, Karl Alexander Heufer<\/b><\/p>\n<p>DOI Number XXX-YYY-ZZZ<\/p>\n<p>Conference Number HiSST-2022-95<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1006,1011],"tags":[1080,1079,500],"class_list":["post-16131","post","type-post","status-publish","format-standard","hentry","category-events","category-hisst-2022","category-materials-and-structures-hisst-2022","tag-detonation-tube","tag-expansion-nozzle-cooling","tag-transpiration-cooling","category-993","category-1006","category-1011","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16131","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/comments?post=16131"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16131\/revisions"}],"predecessor-version":[{"id":16132,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16131\/revisions\/16132"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16131"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16131"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}