Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Study on Combustion Characteristics of Thermoplastic Solid Propellants Embedded with Metal Wires

금속선이 삽입된 열가소성 추진제의 연소 특성 고찰

  • Lee, Sunyoung (PGM Mechanical R&D, Solid Rocket Propulsion, LIG Nex1 Co., Ltd.) ;
  • Oh, Jongyun (PGM Mechanical R&D, Solid Rocket Propulsion, LIG Nex1 Co., Ltd.) ;
  • Lee, Hyunseob (PGM Mechanical R&D, Solid Rocket Propulsion, LIG Nex1 Co., Ltd.) ;
  • Khil, Taeock (PGM Mechanical R&D, Solid Rocket Propulsion, LIG Nex1 Co., Ltd.) ;
  • Kim, Minho (R&D Lab, LIGPOONGSAN Protech)
  • Received : 2021.12.03
  • Accepted : 2022.05.18
  • Published : 2022.08.31
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Abstract

In this paper, the combustion characteristics of solid propellant embedded with metal wires were analyzed by the ground tests of motors. The propellant grains were made of thermoplastic propellants with Al and Cu as metal wires for the enhancement of burning area and designed with cone shape for better ignition. These metals were used to confirm the enhancement of burning rate on thermal diffusivity properties. The internal ballistics analysis and ground test were performed to investigate the effect of burning rate for each metal wire. We obtained the results of burning rate on a difference of thermal diffusivity of each metal wire with well-made propellant grains.

본 논문에서는 금속선이 삽입된 열가소성 고체 추진제의 연소특성을 모터의 지상연소시험을 수행하여 분석하였다. 추진제 그레인은 연소면적 증가를 위한 금속선으로 알루미늄과 구리로 적용하여 열가소성 추진제로 제작하였으며, 더 나은 점화를 위하여 Cone형상으로 설계하였다. 이들 금속들은 열확산 계수 성질에 따른 연소속도 향상효과를 확인하기 위하여 사용되었다. 내탄도 분석과 지상연소시험은 각 금속선에 따른 연소속도 효과를 조사하기 위하여 수행되었고, 잘 제작된 추진제 그레인으로 각 금속선들의 열확산 계수의 차이에 따른 추진제의 연소속도 결과들을 얻었다.

Keywords

References

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