Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Extinction Characteristic of AP/HTPB Composite Solid Propellant by Rapid Depressurization

급감압에 의한 AP/HTPB 복합고체추진제의 소화 특성

  • Kim, Daeyu (Department of Mechanical Engineering, Yonsei University) ;
  • Yoon, Jisang (Department of Mechanical Engineering, Yonsei University) ;
  • Lee, Kukjin (Department of Mechanical Engineering, Yonsei University) ;
  • Yoon, Woongsup (Department of Mechanical Engineering, Yonsei University)
  • Received : 2018.10.31
  • Accepted : 2018.11.29
  • Published : 2019.04.01
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Abstract

Exposure to a rapidly depressurized environment causes extinction of a burning solid propellant. Experiments have been conducted to determine the rate of depressurization required to extinguish a burning solid propellant. For this purpose, a depressurization combustor was designed and fabricated. The results of this experiment were used to determine the boundary between extinction and non-extinction of AP/HTPB solid propellants under different propellant compositions. Experimental results show that the initial and final pressures have a considerable effect on the critical depressurization rate.

신속하게 감압되는 환경에 노출되면 연소중인 고체추진제는 소화가 일어난다. 연소되는 중인 고체추진제를 소화하는데 필요한 압력 감소율인 임계감압률을 찾는 실험이 진행되었다. 이를 위해 감압 시점, 감압 속도, 초기 압력, 최종 압력을 조절할 수 있는 감압연소기를 설계 및 제작하였다. 이 실험의 결과는 특정 AP/HTPB 복합고체추진제 조성에서 소화와 비소화 사이의 경계를 결정하는데 사용되었다. 실험 결과 초기 압력과 최종 압력이 소화를 위한 임계감압률에 큰 영향을 미치는 것으로 나타났다.

Keywords

References

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