Bulletin of the Korean Space Science Society (한국우주과학회:학술대회논문집(한국우주과학회보))

The Korean Space Science Society (한국우주과학회)
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AN ANALYTICAL STUDY ON THE DYNAMIC CHARACTERISTICS OF A LIQUID PROPULSION SYSTEM

  • Lee Han Ju (Propulsion System Department, KSLV Program Office, KARI) ;
  • Lim Seok Hee (Propulsion System Department, KSLV Program Office, KARI) ;
  • Jung Dong Ho (Propulsion System Department, KSLV Program Office, KARI) ;
  • Kim Yong Wook (Propulsion System Department, KSLV Program Office, KARI) ;
  • Oh Seung Hyub (Propulsion System Department, KSLV Program Office, KARI)
  • Published : 2004.10.01
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Abstract

The longitudinal instability (POGO) of the rocket should not be occurred during the whole flight time for the large class liquid propulsion system to complete a mission successfully. The longitudinal instability is caused by the resonance between the propulsion system and rocket structure in the low frequency range below 50Hz, ordinarily. Analysis on the low frequency dynamic characteristics on the liquid propulsion system with staged combustion cycle engine system was performed as a preliminary study on the longitudinal instability analysis.

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