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Analysis on stability of POGO and parameters of propulsion system in liquid rocket

  • Hou Wang Li*
  • , Cong Wang
  • , Xiao Shi Zhang
  • *Corresponding author for this work
  • School of Astronautics, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

To explore effective methods of avoiding POGO instability, this paper starts with a thorough study on influence of parameters on natural frequency of propulsion system in liquid rocket. By adopting the method of critical damping ratio, stability of coupled structure-propulsion system is analyzed. The results show that installing an accumulator in suction line can effectively decrease natural frequency of propulsion system, which can improve the stability of coupled system. When cavitation and inertance of accumulator increases or installation position gets closer to top of pump, the influence of accumulator on the natural frequency becomes more significant.

Original languageEnglish
Title of host publicationMechatronics and Mechanical Engineering I
EditorsTeresa T. Zhang, He Rui, Puneet Tandon, Puneet Tandon, Teresa T. Zhang, He Rui
PublisherTrans Tech Publications Ltd
Pages158-162
Number of pages5
ISBN (Electronic)9783038352921, 9783038352921
DOIs
StatePublished - 2014
Externally publishedYes
Event2014 International Conference on Mechatronics and Mechanical Engineering, ICMME 2014 - Chengdu, China
Duration: 6 Sep 20148 Sep 2014

Publication series

NameApplied Mechanics and Materials
Volume664
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2014 International Conference on Mechatronics and Mechanical Engineering, ICMME 2014
Country/TerritoryChina
CityChengdu
Period6/09/148/09/14

Keywords

  • Critical damping ratio
  • POGO
  • Parameters
  • Propulsion system
  • Stability

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