Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Test and Evaluation for Time Delay Function of Point Detonating Fuze by Underwater Sound Analysis

수중음향 분석을 통한 충격신관 지연기능 시험평가

  • Na, Taeheum (The 8th Research and Development Institute, Agency for Defense Development) ;
  • Jang, Yohan (The 8th Research and Development Institute, Agency for Defense Development) ;
  • Jeong, Jihoon (The 8th Research and Development Institute, Agency for Defense Development) ;
  • Kim, Kwanju (Department of Mechanical and System Design Engineering, Hongik University)
  • 나태흠 (국방과학연구소 제8기술연구본부) ;
  • 장요한 (국방과학연구소 제8기술연구본부) ;
  • 정지훈 (국방과학연구소 제8기술연구본부) ;
  • 김관주 (홍익대학교 기계시스템디자인공학과)
  • Received : 2016.09.23
  • Accepted : 2017.02.24
  • Published : 2017.04.05
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Abstract

This study proposes an evaluation method for time delay function(TDF) of Point Detonation(PD) fuse using underwater explosion and water entry phenomena. Until now, nothing but the naked eyes of an observer or video images have been used to determine whether the TDF of PD fuze is operated or not. The observer has verified the performance of TDF by analysing the shape of the plume formed by underwater explosion. However, it is very difficult to evaluate the TDF of PD fuse by these conventional methods. In order to overcome this issue, we propose a method using underwater sound signal emitted from the underwater explosion of high explosive charge. The result shows that the measured sound signal is in accord with the physical phenomena of water entry of warhead as well as underwater explosion. Also, from the hypothesis test of bubble period, difference on underwater sound analysis between dud event and delay one is proved.

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References

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