![\"Deep](\"\/wp-content\/uploads\/2026\/08\/Deep-Blue-Aerospace-Completes-First-100-Second-Long-Duration-Test-of-130-Tonne-Class-THUNDER-RS-Engine2.webp\")
<\/p>\nAugust 21 \u2014 Deep Blue Aerospace has successfully completed a 100-second, long-duration steady-state hot-fire test of its 130-tonne-class THUNDER-RS liquid oxygen\/kerosene engine at the company\u2019s liquid rocket engine and propulsion-system test facility.<\/p>\n
The engine operated steadily and without faults throughout the test, achieving all test objectives. The milestone marks a key engineering breakthrough for high-thrust reusable propulsion in China\u2019s commercial space sector.<\/p>\n
Test data showed that the THUNDER-RS generated 1,297.5 kilonewtons of thrust, equivalent to approximately 132.3 tonnes-force. All operating parameters closely matched their design targets. The test fully validated the reliability of the complete engine while assessing the thrust chamber\u2019s thermal-protection capabilities under prolonged exposure to high temperatures and pressures. The control system and other core hardware were also subjected to realistic, sustained operating conditions.<\/p>\n
The THUNDER-RS is China\u2019s most powerful gas-generator-cycle, pintle-injector liquid oxygen\/kerosene engine. The 100-second test represents a significant step in scaling this technological approach from smaller engines to a high-thrust, 100-tonne-class propulsion system.<\/p>\n
Designed as the primary propulsion system for the large reusable NEBULA-2 launch vehicle, the THUNDER-RS incorporates independently developed core technologies. It uses a gas-generator-cycle architecture and a pintle injector developed in-house by Deep Blue Aerospace, while extensively employing integrated metal 3D-printing processes.<\/p>\n
Pintle injection is one of Deep Blue Aerospace\u2019s signature technologies. It has already undergone multiple rounds of validation on smaller engines and has now been applied to a 100-tonne-class high-thrust model. Metal 3D printing simplifies the engine\u2019s structure, shortens development cycles and further improves its reliability and potential for repeated use.<\/p>\n
<\/p>\n
Why does the space industry attach such importance to a 100-second long-duration test?<\/p>\n
A short-duration firing can verify whether an engine starts and shuts down properly, but 100 seconds of steady-state operation broadly covers the principal powered phase of a rocket flight. It is therefore a critical threshold that an engine must cross before progressing from a prototype to an engineering-ready system.<\/p>\n
Such a test comprehensively evaluates the engine\u2019s structural strength, thermal-protection system and coordination among its various components while simulating sustained operation under actual flight conditions. By passing the 100-second steady-state threshold, the THUNDER-RS has moved beyond the laboratory-prototype stage and laid a solid foundation for subsequent tests involving an 11-engine cluster, rocket recovery and reusability.<\/p>\n
Propulsion is the lifeblood of a reusable launch vehicle, and engine maturity directly determines the pace of the overall rocket development program. With the THUNDER-RS completing its long-duration test, development of Deep Blue Aerospace\u2019s large reusable NEBULA-2 rocket is now accelerating.<\/p>\n
Work is proceeding simultaneously on the vehicle structure, avionics and control system, recovery-navigation system, servo mechanisms and other major subsystems. Deep Blue Aerospace follows a development strategy of achieving an engine breakthrough before beginning full rocket integration. By progressively accumulating ground-test data, the company aims to reduce the risks associated with subsequent integration and flight testing.<\/p>\n
Competition in China\u2019s commercial reusable-launch-vehicle market is intensifying. Companies are moving from conceptual designs to hardware validation, with high-thrust liquid engines and rocket-recovery technologies reaching milestone after milestone.<\/p>\n
The principal value of reusable rockets lies in reducing launch costs per mission and supporting large-scale satellite constellation deployment, near-Earth space development and space-station resupply. Highly reliable reusable propulsion is an indispensable prerequisite for achieving commercial operations at scale.<\/p>\n
The THUNDER-RS engine\u2019s 100-second test represents an important building block in the industry\u2019s continued progress. Deep Blue Aerospace plans to conduct further routine ground testing and technological iterations to refine the high-thrust engine, advance the reusable NEBULA-2 toward design finalization, and provide China\u2019s commercial space industry with highly reliable, low-cost space transportation solutions.<\/p>\n","protected":false},"excerpt":{"rendered":"
August 21 \u2014 Deep Blue Aerospace has successfully completed a 100-second, long-duration steady-state hot-fire test of its 130-tonne-class THUNDER-RS liquid oxygen\/kerosene engine at the company\u2019s liquid rocket engine and propulsion-system test facility. The engine operated steadily and without faults throughout the test, achieving all test objectives. The milestone marks a key engineering breakthrough for high-thrust […]<\/p>\n","protected":false},"author":1,"featured_media":88492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[1682,135,5786,8295,10152,10151,10150,238,9775,10149],"class_list":["post-88491","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-3d-printing","tag-china","tag-commercial-spaceflight","tag-deep-blue-aerospace","tag-hot-fire-testing","tag-liquid-propulsion","tag-nebula-2","tag-reusable-rockets","tag-rocket-engines","tag-thunder-rs"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/88491"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=88491"}],"version-history":[{"count":1,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/88491\/revisions"}],"predecessor-version":[{"id":88494,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/88491\/revisions\/88494"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/88492"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=88491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=88491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=88491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}