Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Strain Characteristics of a 75 tonf-class Engine for Ground Firing Test

75톤급 엔진 지상 연소 시험 변형율 특성

  • Yoo, Jaehan (Rocket Engine Team, Korea Aerospace Research Institute) ;
  • Kim, Jinhyuk (Rocket Engine Team, Korea Aerospace Research Institute) ;
  • Jeon, Seongmin (Rocket Engine Team, Korea Aerospace Research Institute)
  • Received : 2018.05.10
  • Accepted : 2018.08.02
  • Published : 2018.12.01
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Abstract

A liquid rocket engine experiences various static loads in flight, such as high pressures due to propellents, thrust and thermal loads due to cryogenic liquid oxygen and combustion gas with extreme vibration. During the engine development stage, structural analyses and investigation on the strain measured from ground firing tests are necessary for determining the structural reliability of the engine. In this study, the strain characteristics, obtained from the ground firing tests of a 75 tonf-class engine, were analyzed.

액체로켓엔진은 비행 중에 극심한 진동 환경뿐만 아니라 추진제의 고압, 추력, 극저온 산화제나 고온 연소 가스에 의한 열하중 등의 다양한 정적 하중을 겪는다. 엔진 개발 단계에서는 구조 안정성을 위해 엔진 시스템에 대한 구조 해석과 지상 연소 시험에서 측정된 변형율을 분석이 필요하다. 여기서는 75톤급 엔진의 지상 연소 시험에서 얻어진 변형율 특성을 분석하였다.

Keywords

References

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