{"id":22428,"date":"2025-10-21T10:39:38","date_gmt":"2025-10-21T10:39:38","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=22428"},"modified":"2025-10-21T10:39:39","modified_gmt":"2025-10-21T10:39:39","slug":"modeling-and-simulation-of-a-solid-propellant-gas-generator-for-hypersonic-airbreathing-propulsion","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/10\/21\/modeling-and-simulation-of-a-solid-propellant-gas-generator-for-hypersonic-airbreathing-propulsion\/","title":{"rendered":"Modeling and Simulation of a Solid Propellant Gas Generator for Hypersonic Airbreathing Propulsion"},"content":{"rendered":"\n<p><strong>Daniil KALAEV, Luca ARMANI, Rahman ABDUL, Daniele IANNARELLI, Francesco MARGANI, Antonella INGENITO<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2025-346<\/strong><\/p>\n\n\n\n<p>Gas generators play a central role in solid-propellant air-breathing propulsion systems, particularly in hypersonic vehicles where compactness, reliability, and thermal efficiency are crucial. Their function is to supply a controlled flow of hot gases that sustain combustion in the main chamber, directly influencing overall performance and stability. This study presents a validated methodology for designing gas generators for solid-propellant air-breathing hypersonic systems. A quasi-one-dimensional model is coupled with high-fidelity 3D CFD simulations to enable both rapid performance prediction and detailed flow analysis. A dynamic grain regression model, implemented via a User Defined Function based on<br>Vielle\u2019s law, allows the simulation of evolving geometry in response to chamber pressure. Results show strong agreement between 1D and 3D models in predicting pressure, mass generation, and temperature evolution. A newly developed fuel-rich propellant demonstrated improved thermochemical performance and stable gas output, supporting integration with a ramjet combustor. This framework provides a foundation for future coupling with the main combustor and grain geometry optimization across various flight conditions.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/10\/HISST2025_346_paper.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Daniil KALAEV, Luca ARMANI, Rahman ABDUL, Daniele IANNARELLI, Francesco MARGANI, Antonella INGENITO<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2025-346<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,3361,3363],"tags":[436,3391,3390,564,3389],"class_list":["post-22428","post","type-post","status-publish","format-standard","hentry","category-events","category-1-hisst-2025","category-propulsion-systems-components","tag-cfd-simulation","tag-fuel-grain-regression","tag-gas-generator-design","tag-hypersonic-vehicles","tag-solid-propellant-air-breathing-propulsion","category-993","category-3361","category-3363","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22428","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=22428"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22428\/revisions"}],"predecessor-version":[{"id":22430,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22428\/revisions\/22430"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=22428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=22428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=22428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}