Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Experimental Investigation on Combustion Performance of a Pintle Injector Engine with Double-row Rectangular Slot

핀틀 인젝터 Rectangular Slot 2열 형상에 따른 연소성능에 관한 연구

  • Ryu, Hobin (Department of Aerospace Engineering, Chungnam National University) ;
  • Yu, Isang (Department of Aerospace Engineering, Chungnam National University) ;
  • Kim, Wanchan (Department of Aerospace Engineering, Chungnam National University) ;
  • Shin, Donghae (Department of Aerospace Engineering, Chungnam National University) ;
  • Ko, Youngsung (Department of Aerospace Engineering, Chungnam National University) ;
  • Kim, Seonjin (Fire Safety Engineering, Korea Chungnam State University)
  • Received : 2016.11.18
  • Accepted : 2017.02.16
  • Published : 2017.06.01
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Abstract

In this study, combustion tests were performed to investigate combustion performance of a pintle injector engine with double row rectangular slot which uses kerosene and liquid oxygens as propellants. The double row rectangular slot was designed to improve the combustion performance of a pintle engine with a single row and the blockage factor was changed from 0.7 to 1.0. The main design parameters of the double row were distance between rows, area ratio and aspect ratio. The characteristic velocity efficiency was measured from 92.4 to 96.9 percentage for double row but 86.8 percentage for single row. It showed the highest combustion performance at the BF 0.85.

본 논문에서는 액체산소/케로신을 추진제로 사용하는 핀틀 인젝터 로켓엔진의 연소성능을 확인하였다. Rectangular slot 1열 인젝터의 연소성능을 개선하기 위하여 2열 배치를 통해 BF (Blockage Factor)를 0.7~1.0으로 변화하였고, 2열 설계 변수로 1열/2열의 간격, 면적비, 가로세로비를 고려하였다. 실험 결과 92.4 ~ 96.9%의 특성속도효율을 확인하였고, 1열 인젝터 특성속도효율 86.8%와 확연한 차이를 보였다. Rectangular slot 2열 적용 시 BF 0.85에서 최적의 연소성능을 보임을 확인하였다.

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References

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