{"id":23287,"date":"2025-10-26T12:31:44","date_gmt":"2025-10-26T12:31:44","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=23287"},"modified":"2025-10-26T12:31:45","modified_gmt":"2025-10-26T12:31:45","slug":"investigation-of-heat-flux-and-stagnation-pressure-integrated-measurement-probe-using-gardon-gauge","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/10\/26\/investigation-of-heat-flux-and-stagnation-pressure-integrated-measurement-probe-using-gardon-gauge\/","title":{"rendered":"Investigation of Heat flux and Stagnation Pressure Integrated Measurement Probe using Gardon Gauge"},"content":{"rendered":"\n<p><strong>Jeongwoo KIM, Seonghyun SO, Kyungsoo PARK, Jungmin LEE, Jaejeong NA, Minwook KIM, Dongki HYUN, Gisu PARK, Christian DUERNHOFER, Stefan LOEHLE<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2025-005<\/strong><\/p>\n\n\n\n<p>The growing demand for hypersonic vehicle development requires accurate ground testing under appropriate thermal and pressure conditions. This study introduces a novel integrated probe capable of simultaneously measuring heat flux and stagnation pressure for arcjet testing. The apparatus incorporates a water-cooled Gardon gauge and dual stagnation pressure ports in a compact design compliant with ESA standards. Three experimental campaigns were conducted in the PWK4 arcjet facility at IRS, Germany, under both low- and high-enthalpy conditions. Key findings include: (1) a 2 mm pressure port is sufficient for stable stagnation pressure measurement; (2) graphite paste on the Gardon gauge significantly influences heat flux readings, with paste depletion increasing measured flux due to reduced emissivity; (3) the exposed constantan surface exhibits a higher catalytic effect than oxidized copper, leading to elevated heat flux values compared with calorimeter references; and (4) both pressure and heat flux profiles exhibit a bell-shaped distribution, with higher values along the central axis. The integrated probe demonstrated durability, repeatability, and sensitivity to surface conditions, providing a reliable tool for pinpoint heat flux measurements in high-enthalpy arcjet testing.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/10\/HISST2025_5_paper.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Jeongwoo KIM, Seonghyun SO, Kyungsoo PARK, Jungmin LEE, Jaejeong NA, Minwook KIM, Dongki HYUN, Gisu PARK, Christian DUERNHOFER, Stefan LOEHLE<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2025-005<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,3361,3368],"tags":[3760,3762,480,3761,1225],"class_list":["post-23287","post","type-post","status-publish","format-standard","hentry","category-events","category-1-hisst-2025","category-testing-evaluation-1-hisst-2025","tag-arcjet","tag-gardon-gauge","tag-heat-flux","tag-integrated-probe","tag-stagnation-pressure","category-993","category-3361","category-3368","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/23287","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=23287"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/23287\/revisions"}],"predecessor-version":[{"id":23289,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/23287\/revisions\/23289"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=23287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=23287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=23287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}