Proceedings of the Korean Society of Propulsion Engineers Conference (한국추진공학회:학술대회논문집)

  • 2001.11a
  • /
  • Pages.15-18
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  • 2001
  • /
  • 1975-342X(pISSN)
The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지

The Rotordynamic Analysis of TurboPump System for 9.5ton thrust Liquid Rocket Engine

9.5톤급 액체추진엔진용 터보펌프 시스템의 로터다이나믹 해석

  • 양홍준 (현대모비스 기술연구소) ;
  • 김경호 (현대모비스 기술연구소) ;
  • 김영수 (현대모비스 기술연구소) ;
  • 우유철 (현대모비스 기술연구소)
  • Published : 2001.11.01
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Abstract

In this paper, we investigate the rotordynamic characteristics of turbopump system for 9.5ton thrust liquid rocket engine. A finite element method is used to analyze the vibratior characteristics of a rotor-bearing system. The turbopump rotating system is modeled by shaft with sixty elements, nine rigid disks, four ball bearings and four floating ring seals. The calculation results show that the margin of 1st critical speed is increased from 12% to 68% by use of elastic damping ring. In addition, the margin of the 2nd critical speed near the operating speed is increased from 30% to 63% by the stiffness and damping of floating ring seals.

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