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Analytical Investigation on Temperature Rise of Liquid Oxygen in Propellant Tank  

Cho Namkyung (한국항공우주연구원 추진제어그룹)
Jeong Yonggahp (한국항공우주연구원 추진제어그룹)
Kim Youngmog (한국항공우주연구원 추진제어그룹)
Jeong Sangkwon (한국과학기술원 기계공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.9, no.3, 2005 , pp. 25-37 More about this Journal
Abstract
For pump-fed rocket propulsion system, the temperature of LOX to be supplied to turbopump inlet should be satisfied with pump inlet temperature requirement during all operating stages, as excessive temperatures can result in cavitation due to reduction in NPSH, thus either damaging the pump or adversely affecting pump performance rise. So exact estimation of LOX temperature rise is absolutely needed for developing reliable propulsion system. This paper presents systematic analysis scheme for estimating inner process of cryogenic propellant tank which is needed for LOX temperature rise. And this paper presents LOX temperature rise and thermal stratification for all rocket operating stages including cooling, filling, waiting, pre-pressurization and firing, with the application of buoyancy driven boundary layer theory.
Keywords
LOX; Temperature Rise; Thermal Stratification; Pump-fed; Operating Stage;
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