{"id":16169,"date":"2024-04-12T10:40:42","date_gmt":"2024-04-12T10:40:42","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16169"},"modified":"2024-04-12T10:40:43","modified_gmt":"2024-04-12T10:40:43","slug":"radiative-comparison-between-high-and-low-density-hypersonic-argon","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/04\/12\/radiative-comparison-between-high-and-low-density-hypersonic-argon\/","title":{"rendered":"Radiative Comparison Between High and Low Density Hypersonic Argon"},"content":{"rendered":"\n<p><strong>Rory M. Kelly, David E. Gildfind, Timothy J. McIntyre<\/strong><\/p>\n\n\n\n<p><strong>DOI Number XXX-YYY-ZZZ<\/strong><\/p>\n\n\n\n<p><strong>Conference Number HiSST-2022-180<\/strong><\/p>\n\n\n\n<p>This paper reports on the analysis of hypersonic argon flows generated in the expansion tube X2 located<br>at the University of Queensland (UQ). A two dimensional wedge model was used for these experiments<br>with the goal of measuring the radiation over the surface of the model and in the expansion region.<br>Radiation was measured in front of the shock, between the shock and expansion fan and for some of<br>the region after the expansion fan. Measurements of the excitation temperature of the argon gas have<br>been made and reported twice previously for each density condition. In this paper, focus is placed on<br>the region in front of the shock. Significant electronic energy level populations were detected in the<br>freestream flow of both the low and high density experiments. It is found that this precursor radiation<br>is likely caused by radiation emitted from the hot argon above the wedge model, radiating upstream<br>and exciting the incoming free-stream argon and then re-radiating before reaching the shock layer.<br>Ionisation was measured in both low and high density experiments. The low density experiments were<br>found to have a higher amount of ionisation, and percentage ionisation before the shock layer.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-180.pdf\" data-type=\"link\" data-id=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-180.pdf\">Read the full paper> <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Rory M. Kelly, David E. Gildfind, Timothy J. McIntyre<\/b><\/p>\n<p>DOI Number XXX-YYY-ZZZ<\/p>\n<p>Conference Number HiSST-2022-180<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1006,1010],"tags":[1117,1119,546,1116,1118],"class_list":["post-16169","post","type-post","status-publish","format-standard","hentry","category-events","category-hisst-2022","category-hypersonic-fundamentals-and-history-hisst-2022","tag-argon","tag-free-stream","tag-hypersonics","tag-radiation","tag-spectroscopy","category-993","category-1006","category-1010","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16169","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=16169"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16169\/revisions"}],"predecessor-version":[{"id":16170,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16169\/revisions\/16170"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}