韓国の宇宙企業INNOSPACEが、HANBIT-Microロケット用の4kN級液体メタンキックステージエンジンのホットファイア試験を完了しました。再生冷却や燃焼安定性が確認され、次段開発への進展が期待されています。

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Advancing LOX/LCH4 Dual-Propellant Cooling for HANBIT-Micro

INNOSPACE has successfully completed a series of combustion tests for its upgraded 4 kN-class liquid-methane kick-stage combustor for HANBIT-Micro. 🚀

Building on the 237-second long-duration ground test in May 2024, the combustor has been advanced with a Dual-Propellant Regenerative Cooling scheme. 📈

⚙️ Unlike conventional single-propellant regenerative cooling, this approach utilizes both fuel and oxidizer as coolants, enabling:
🔹 Reduced feed pressure requirements
🔹 Lighter propellant tanks
🔹 Lower overall kick-stage mass

🔥 By preheating and vaporizing both coolants, the system also achieves:
🔹 Improved mixing efficiency
🔹 Shorter ignition delay
🔹 Enhanced combustion stability and efficiency

💡 Overcoming High Technical Barriers
Most notably, the recent test validated stable regenerative cooling under low-pressure, subcritical conditions — a technically demanding regime — and mitigated the risks associated with using liquid oxygen (LOX) as a coolant.
The application of a gas–gas swirl injector further demonstrated improved mixing performance.

With this milestone, INNOSPACE continues to advance methane propulsion technology and enhance the maturity of the HANBIT-Micro kick-stage system.  Please stay tuned for the next phase of development. 🙌

#SpaceInnovation #HANBITMicro #KickStage #MethaneEngine #RocketEngineering #SpaceTech

・画像: HANBIT Microのロケット外観を示しています。・INNOSPACEがHANBIT‑Micro用4 kN級液体メタン（LCH4）キックステージのホットファイア試験を完了しました。
・LOX（液体酸素）/LCH4のデュアル再生冷却で給送圧低減、タンク軽量化、総質量低下を実証しました。
・予熱で混合改善・点火遅延短縮・燃焼安定化を確認し、低圧亜臨界下での安定冷却とガス–ガス渦流インジェクタの混合改善も示しました。・次段開発に期待していますぽい


韓国INNOSPACE、メタンエンジンの燃焼試験に成功

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