Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Experimental approach for catalyst bed sizing of liquid propellant thruster

액체추력기 촉매베드 크기 결정을 위한 실험적 방법

  • 안성용 (KAIST, 항공우주공학과, 로켓 실험실) ;
  • 권세진 (KAIST, 항공우주공학과, 로켓 실험실)
  • Published : 2008.06.30
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Abstract

A 50 Newton monopropellant thruster being developed for attitude control in a variety of aerospace application systems is described in this paper. A scaled down thruster with platinum on aluminum oxide in the reaction chamber was tested to determine the catalyst capacity. A scaled up thruster which was designed and fabricated using data obtained from a small scale device was evaluated by its decomposition efficiency based on the temperature, the efficiency of characteristic velocity, and the measurement of thrust. The performance of a scaled up thruster was marked by a measured thrust of 42 Newton, 98 % efficiency of the characteristic velocity, a specific impulse of 123 sec at sea level.

진공 작동 조건에서 50 Newton 추력 레벨을 가지는 과산화수소 단일추진제 추력기를 개발하였다. 축소형 추력기를 제작하여 제조한 촉매의 추진제 분해 성능을 평가하였다. 축소형 추력기의 성능 평가 결과로부터 50 Newton 추력을 위한 추진제 유량을 완전히 촉매 분해시키기 위해 필요한 반응기를 설계하였다. 스케일 업을 통해 제작된 추력기는 34.8 g/s의 추진제 유량에서 98%의 특성속도 효율을, 대기압 조건에서 42 Newton의 추력, 123 sec의 비추력 결과를 보임으로써 반응기 스케일 업 과정이 적절함을 확인하였다.

Keywords

References

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