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Review of POGO and PSD  

고광웅 (한국과학기술원 기계공학과)
이한주 (한국항공우주연구원 추진기관그룹)
정동운 (한국과학기술원 기계공학과)
이상용 (한국과학기술원 기계공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.7, no.4, 2003 , pp. 1-9 More about this Journal
Abstract
To reduce the possibility of longitudinal dynamic instability, called "POGO", in the liquid rocket system due to the feedback effect of a main structure and a fuel-feeding system, several different types of PSD(POGO Suppression Device) systems have been studied. In the present study, several different types of PSD were reviewed. Basically, all PSD systems can be categorized into two groups; a passive PSD or an active PSD. We can classify the passive PSD's into more detailed groups according to their compliance methods; localized compliance methods or distributed compliance methods. As a result of our intensive review on various PSD's, the gas-filled accumulator with a level control system is considered to be the most suitable one to suppress the POGO instability without mal-effects to the performance of a fuel-feeding system.ng system.
Keywords
POGO; PSD;
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