Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Study of Aluminum Agglomeration Model During Solid Propellant Combustion

고체추진제 연소 중 알루미늄 응집 모델 연구

  • Yoon, Jisang (Department of Mechanical Engineering, Yonsei University) ;
  • Lee, Kookjin (Department of Mechanical Engineering, Yonsei University) ;
  • Kim, Daeyu (Department of Mechanical Engineering, Yonsei University) ;
  • Park, Namho (Department of Mechanical Engineering, Yonsei University) ;
  • Ko, Seungwon (Propulsion Department, Agency for Defense Development) ;
  • Yoon, Woongsup (Department of Mechanical Engineering, Yonsei University)
  • Received : 2018.11.14
  • Accepted : 2019.02.17
  • Published : 2019.04.01
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Abstract

Aluminum, which is a metal fuel contained in the composite solid propellant, is not ignited and burned on the combustion surface by the oxide film, and it partially melts and coalesces with surrounding aluminum particles. For the evaluation and design of the propellant performance, modeling was performed to predict the size and distribution of agglomerated particles, and the size and distribution of agglomerates were compared and verified through experiment. The predicted values showed the tendency to decrease with pressure as in the experiment, but the error increased as the pressure increased. The agglomerated particle distribution graph showed a difference in the volume fraction although the diameter at the peak was the same.

복합 고체추진제에 포함된 금속 연료인 알루미늄은 산화피막에 의해 연소 표면에서 점화, 연소되지 못하고 일부분 녹아 주위 알루미늄 입자들과 응집한다. 추진제 성능 평가 및 설계를 위해 응집된 입자의 크기 및 분포를 예측하기 위해 모델링을 수행하였으며 직접 실험을 통해 응집된 입자의 크기 및 분포를 비교 및 검증하였다. 예측값은 실험과 동일하게 압력에 따라 평균직경이 감소하는 경향을 나타내었으나 압력이 증가할수록 오차가 증가하였다. 응집 입자 분포그래프는 최고점에서의 직경이 일치했지만 체적 분률에서 차이가 나타났다.

Keywords

References

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