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http://dx.doi.org/10.6108/KSPE.2022.26.4.054

Conceptual Design of a LOX/Methane Rocket Engine for a Small Launcher Upper Stage  

Kim, Cheulwoong (Small Launcher R&D Office, Korea Aerospace Research Institute)
Lim, Byoungjik (Small Launcher R&D Office, Korea Aerospace Research Institute)
Lee, Junseong (Small Launcher R&D Office, Korea Aerospace Research Institute)
Seo, Daeban (Small Launcher R&D Office, Korea Aerospace Research Institute)
Lim, Seokhee (Small Launcher R&D Office, Korea Aerospace Research Institute)
Lee, Keum-Oh (Small Launcher R&D Office, Korea Aerospace Research Institute)
Lee, Keejoo (Small Launcher R&D Office, Korea Aerospace Research Institute)
Park, Jaesung (Small Launcher R&D Office, Korea Aerospace Research Institute)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.26, no.4, 2022 , pp. 54-63 More about this Journal
Abstract
A 3-tonf class liquid rocket engine that powers the upper stage of a small launcher and lifts 500 kg payload to 500 km SSO is designed. The small launcher is to utilize the flight-proven technology of the 75-tonf class engine for the first stage. A combination of liquid oxygen and liquid methane has been selected as their cryogenic states can provide an extra boost in specific impulse as well as enable a weight saving via the common dome arrangement. An expander cycle is chosen among others as the low-pressure operation makes it robust and reliable while a specific impulse of over 360 seconds is achievable with the nozzle extension ratio of 120. Key components such as combustion chamber and turbopump are designed for additive manufacturing to a target cost. The engine system provides an evaporated methane for the autogenous pressurization system and the reaction control of the stage. This upper stage propulsion system can be extended to various missions including deep space exploration.
Keywords
Liquid Rocket Engine; Propulsion System; Small Launch Vehicle; Expander Cycle; Methane;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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