{"id":16667,"date":"2024-05-08T11:31:56","date_gmt":"2024-05-08T11:31:56","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16667"},"modified":"2025-09-21T14:54:53","modified_gmt":"2025-09-21T14:54:53","slug":"development-of-a-dual-layer-ablator-for-spacecraft-heat-shield-applications","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/05\/08\/development-of-a-dual-layer-ablator-for-spacecraft-heat-shield-applications\/","title":{"rendered":"Development of a Dual-Layer Ablator for Spacecraft Heat Shield Applications"},"content":{"rendered":"\n<p><strong>Rajesh Kumar CHINNARAJ, Young Chan KIM, Seong Man CHOI<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: 10.82241\/ceas-hisst-2024-026<\/strong><\/p>\n\n\n\n<p><strong>Conference Number: HiSST-2024-026<\/strong><\/p>\n\n\n\n<p>For spacecraft heat shield applications, we developed a dual-layer carbon-phenolic\/silica phenolic ablator. The development of this dual-layer ablator began with testing a carbon-phenolic material with two different lamination angles of 0\u00b0 and 30\u00b0, using a high-velocity oxygen fuel (HVOF) material ablation test facility. Based on HVOF results, the 30\u00b0 carbon-phenolic material (used as a recession layer) is selected as the base for the dual-layer ablator. The 30\u00b0 carbon-phenolic material was augmented with a silica-phenolic material (used as an insulating layer) and tested in a 0.4 MW supersonic arc-jet plasma wind tunnel. In plasma wind tunnel tests, dual-layer ablator specimens with varying thicknesses of carbon-phenolic layers and different surface shapes (flat-faced and hemispherical-faced) were tested. The plasma wind tunnel tests showed the specimen silica-phenolic recession layer internal temperatures were well below the set design limit of 453.15 K (180 \u00b0C). The surface temperatures of the hemispherical-faced specimens measured around 3000 K, approximately 350 K higher than those of the flat-faced specimens, leading to elevated internal temperatures. Under identical test conditions, hemispherical-faced specimens exhibited approximately 1.4 times greater recession and mass loss compared to the flat-faced specimens.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/05\/HiSST-2024-26.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Rajesh Kumar CHINNARAJ, Young Chan KIM, Seong Man CHOI<\/b><\/p>\n<p>DOI Number: https:\/\/doi.org\/10.82241\/ceas-hisst-2024-026<\/p>\n<p>Conference Number: HiSST-2024-026<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1407,1412],"tags":[1419,1420,1418,565],"class_list":["post-16667","post","type-post","status-publish","format-standard","hentry","category-events","category-11-hisst-2024","category-materials-and-structures-11-hisst-2024","tag-ablative-materials","tag-carbon-phenolic","tag-spacecraft-heat-shield","tag-thermal-protection-system","category-993","category-1407","category-1412","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16667","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=16667"}],"version-history":[{"count":4,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16667\/revisions"}],"predecessor-version":[{"id":21309,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16667\/revisions\/21309"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}