Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Study on Penetration Performance of Precision Linear Shaped Charge

정밀선상성형장약의 침투·관통 성능에 관한 연구

  • Lee, Si-Eun (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Lee, Juho (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Moon, Mi-Ae (The 4th Research and Development Institute, Agency for Defense Development)
  • Received : 2019.01.15
  • Accepted : 2019.05.16
  • Published : 2019.06.01
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Abstract

Linear Shaped Charge (LSC) that is widely used as separation system in aerospace system has to charge lots of explosives due to lack of uniformity. In addition, it is hard to optimize shape of liner and explosives because of manufacturing process. In order to overcome aforementioned drawbacks, Precision Linear Shaped Charge (PLSC) is currently under development. PLSC is made in two steps: prepare liner independently and charge explosive uniformly. In this study, PLSC is designed to have proper amount of explosives and penetration test of PLSC with different stand-off distance from liner to target is conducted to confirm penetration performance. Based on the penetration test results of PLSC, the numerical analysis method using AUTODYN is established and verified. Penetration mechanism and characteristics of PLSC is analyzed from the numerical and experimental results.

항공우주시스템에서 절단/분리 시스템에 널리 사용되는 선상성형장약은 복합화약 충전량의 불균일로 인해 과량의 복합화약을 충전해야 하며 제작 공정의 특성상 라이너 및 복합화약 형상을 자유자재로 조절하기 어렵다는 단점을 가지고 있다. 이를 개선하기 위하여 라이너를 단독으로 제작하여 균일한 복합화약량을 충전할 수 있는 정밀선상성형장약에 대한 연구 개발이 진행되고 있다. 본 연구에서는 정밀선상성형장약이 적정 복합화약량을 갖도록 설계하고 설계된 정밀선상성형장약의 최적 침투 관통 성능을 확인하기 위하여 라이너로부터 표적까지의 거리에 단차를 두어 이격거리에 따른 침투 관통 성능시험을 수행하였다. 정밀선상성형장약의 침투 관통 성능시험 결과를 바탕으로 AUTODYN 기반의 수치 해석 환경을 구축하였다. 수치해석 및 시험 결과의 비교 분석을 통해 정밀선상성형장약의 침투 관통 메커니즘과 특성을 분석하였다.

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