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http://dx.doi.org/10.6108/KSPE.2020.24.6.093

Operational Characteristic of Liquid Rocket Engine by Cavitation Instability at Low Inlet Pressure Condition  

Kim, Dae-Jin (Turbopump Team, Korea Aerospace Research Institute)
Kang, Byung Yun (Turbopump Team, Korea Aerospace Research Institute)
Choi, Chang-Ho (Turbopump Team, Korea Aerospace Research Institute)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.24, no.6, 2020 , pp. 93-100 More about this Journal
Abstract
The turbopump of the liquid rocket engine adapts an inducer to minimize the cavitation due to the variations of the propellants supply condition. However, the inducer introduces cavitation instabilities which are well-known problems in the engine development. In this paper, operational characteristics by the cavitation instabilities are analyzed and the reliability of the engine is checked when the first stage engine of the KSLV-II is tested at the low inlet pressure conditions. The characteristic frequencies representing the cavitation instabilities of the LOx pump are clearly found in various high frequency sensor signals around the entire engine in addition to the LOx and fuel pump.
Keywords
Liquid Rocket Engine; Turbopump; Cavitation Instabilities; Super-synchronous Rotating Cavitation; Attached-uneven Cavitation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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