Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Experimental Study on Fluid Viscosity Effects for Centrifugal Turbopump Efficiency

유체점성에 따른 원심형 터보펌프 효율에 관한 실험적 연구

  • Kim, Jin-Sun (Turbopump Department, Korea Aerospace Research Institute) ;
  • Choi, Chang-Ho (Turbopump Department, Korea Aerospace Research Institute) ;
  • Ko, Youngsung (Department of Aerospace Engineering, Chungnam National University)
  • Received : 2016.06.18
  • Accepted : 2016.11.13
  • Published : 2016.12.01
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Abstract

Efficiency characteristics of centrifugal turbopumps for a liquid rocket engine were investigated. Predicting the performance of pumps for a turbopump assembly test, the variation on pump efficiency by working fluids was analyzed from pump component tests. Water and liquid nitrogen (LN2) were used for the component test, kerosene (Jet A-1) and liquid oxygen (LOX) were adapted for the turbopump assembly (TPU) test as working fluids. Overall performance of the pumps was investigated covering design/off-design operating points and the pump efficiency on the environment of real media (LOX/kerosene) could be modified from the pump component tests.

액체로켓엔진에 적용되는 원심형 터보펌프의 효율특성을 실험적으로 고찰하였다. 펌프 단품에 대한 시험결과를 토대로 터보펌프 조립체의 성능을 예측하면서 시험매질에 따른 펌프의 효율특성에 대한 변화를 분석하였다. 펌프에 적용된 작동유체로 단품시험을 위해서는 상온 청수와 액체질소, 터보펌프 조립체 시험에서는 케로신(Jet A-1)과 액체산소(LOX)가 적용되었다. 설계점과 탈설계점 영역을 포함하는 전반적인 작동조건에 대하여 펌프의 효율특성을 파악하였고, 단품시험으로부터 실매질 환경에서 보정된 펌프효율을 구할 수 있었다.

Keywords

References

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