{"id":17356,"date":"2024-06-07T09:44:40","date_gmt":"2024-06-07T09:44:40","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=17356"},"modified":"2025-09-11T10:47:45","modified_gmt":"2025-09-11T10:47:45","slug":"expansion-tube-capabilities-for-studying-boost-glide-re-entry-conditions","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/06\/07\/expansion-tube-capabilities-for-studying-boost-glide-re-entry-conditions\/","title":{"rendered":"Expansion Tube Capabilities for Studying Boost-Glide Re-entry Conditions"},"content":{"rendered":"\n<p><strong>Yuhui LIN, James J. WALLINGTON, Thien BUI, Toby VAN DEN HERIK, Christopher M. JAMES, Eric Won Keun CHANG, Tobias A. HERMANN<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2024-355<\/strong><\/p>\n\n\n\n<p>The expansion tube is a unique hypersonic impulse facility capable of producing both high-enthalpy and high total pressure conditions simultaneously through the unsteady expansion of a non-stagnated test flow. When coupled with high-performance free-piston or detonation drivers, expansion tubes allow for the simulation of such conditions as scaled Earth re-entry, scaled entry into the atmospheres of other planets in the solar system, and high-speed flight through the Earth&#8217;s atmosphere. This paper focuses on the latter case and considers the capabilities of expansion tubes for re-creating the conditions experienced at various parts of the re-entry trajectory of a boost-glide vehicle. Boost-glide vehicles are a type of hypersonic vehicle which is boosted into space by a rocket and then `glides&#8217; through the Earth&#8217;s atmosphere to a target, often re-entering at very high-speeds for flight in the atmosphere of up to Mach 22 (greater than 6 km\/s). In a military sense, they are very important strategically and are currently being developed by several nations around the world. The expansion tube&#8217;s unique ability to simulate high-enthalpy and high total pressure flight makes it particularly well suited to the study of these conditions. This paper will present expansion tube performance envelopes compared to planned boost-glide trajectories and specific facility considerations required to generate these conditions. It will then provide sample experimental data and facility simulations to help quantify the sample conditions.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/06\/HiSST-2024-355.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Yuhui LIN, James J. WALLINGTON, Thien BUI, Toby VAN DEN HERIK, Christopher M. JAMES, Eric Won Keun CHANG, Tobias A. HERMANN<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2024-355<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1407,1415],"tags":[586,1842,1841,466],"class_list":["post-17356","post","type-post","status-publish","format-standard","hentry","category-events","category-11-hisst-2024","category-testing-evaluation","tag-expansion-tube","tag-high-enthalpy-testing","tag-impulse-facility","tag-shock-tunnel","category-993","category-1407","category-1415","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17356","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/comments?post=17356"}],"version-history":[{"count":2,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17356\/revisions"}],"predecessor-version":[{"id":20525,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17356\/revisions\/20525"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=17356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=17356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=17356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}