| Test and Evaluation for Time Delay Function of Point Detonating Fuze by Underwater Sound Analysis |
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Taeheum Na, Yohan Jang, Jihoon Jeong, Kwanju Kim |
1The 8th Research and Development Institute, Agency for Defense Development
2Department of Mechanical and System Design Engineering, Hongik University |
| 수중음향 분석을 통한 충격신관 지연기능 시험평가 |
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나태흠, 장요한, 정지훈, 김관주 |
1국방과학연구소 제8기술연구본부
2홍익대학교 기계시스템디자인공학과 |
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| Abstract |
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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. |
| Key Words:
Underwater Sound, Point Detonating Fuze, Underwater Explosion, Water Entry |
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