Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Study on Spray Angle of a Throttleable Pintle Injector according to Total Momentum Ratio based on Hot Fire Test Conditions

연소시험 조건 기반 총운동량비에 따른 가변추력 핀틀 분사기의 분무각 분석

  • 허수범 (서울대학교 항공우주공학과) ;
  • 김대환 (서울대학교 항공우주공학과) ;
  • 이수지 (서울대학교 항공우주공학과) ;
  • 윤영빈 (서울대학교 항공우주신기술연구소)
  • Received : 2020.08.17
  • Accepted : 2020.09.05
  • Published : 2020.09.30
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Abstract

Throttleable rocket engines are in high demand due to the diversification of space missions. Pintle injector is known to be suitable for throttleable rocket engines, because of its high efficiency in overall thrust zone. In this study, the relationship between spray angle of a throttleable pintle injector and total momentum ratio based on hot fire test conditions was investigated. As a result, the spray angle in 100% and 60% throttling level is higher than the spray angle obtained by the case which considers only propellant mass flow rate, owing to higher total momentum ratio (TMR). The results of this study may be useful for predicting spray angle in hot fire test.

Keywords

References

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