Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Turbine Rotor-Pyrostarter Coupled Test for the Verification of Thermo-Structural Suitability of a Turbopump Turbine

터보펌프 터빈의 열구조적 적합성 검증을 위한 터빈로터-파이로시동기 연계시험

  • Jeong, Eunhwan (Turbopump Department, Korea Aerospace Research Institute) ;
  • Kang, Sang Hun (Advanced Propulsion System Department, Korea Aerospace Research Institute) ;
  • Hong, Moongeun (Advanced Propulsion System Department, Korea Aerospace Research Institute) ;
  • Lee, Hanggi (Turbopump Department, Korea Aerospace Research Institute) ;
  • Lee, Soo Yong (Advanced Propulsion System Department, Korea Aerospace Research Institute) ;
  • Kim, Jinhan (Turbopump Department, Korea Aerospace Research Institute)
  • Received : 2013.06.07
  • Accepted : 2014.01.02
  • Published : 2014.02.01
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Abstract

Turbine rotor-pyrostarter coupled test was performed for the verification of thermo-structural suitability of a turbopump turbine. Newly developed solid propellant and design concept were used in pyrostarter development. In case of turbine rotor, rotor configuration modification and post EDM machining process are adopted in rotor manufacturing respectively for the thermal stress relief and the surface integrity improvement on the blade surfaces. In the test, combustion gas of pyrostarter was directly ejected from the nozzles and impinged on the stationary turbine rotor specimen through the identically shaped flow passage of turbopump. Three kind of thermal load - design to extreme condition - test were performed and no damages were found on the turbine rotor specimens.

터보펌프 터빈로터의 열구조적 적합성 검증을 위한 터빈로터-파이로시동기 연계시험을 수행하였다. 새로운 추진제를 적용한 파이로시동기와 열응력 경감 설계 및 터빈 동익 표면 건전성 향상을 위한 후 가공 공정이 적용된 터빈로터시편이 시험에 사용되었다. 시험은 75톤급 엔진시동을 위한 파이로 시동기의 연소가스를 터보펌프 터빈로터와 동일한 형상의 시편에 분사하는 방식으로 이루어졌다. 터빈에 가해지는 열 부하는 운용 설계점에서 극한 조건까지 세 종류로 구분하여 시험을 진행하였으며 모든 시험에서 터빈로터의 손상은 발견되지 않았다.

Keywords

References

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