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http://dx.doi.org/10.5762/KAIS.2020.21.3.328

Research on the Decrease of Dud Ammunition Rate of Grenade Fuzes of Remote Controlled Munition System(For practice) through Quality Improvement  

Lee, Jong Hyeon (Defense Agency for Technology Quality)
Jung, Hee Chur (Defense Agency for Technology Quality)
Park, Jun Sung (Hanwha)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.3, 2020 , pp. 328-334 More about this Journal
Abstract
At the recent practice test of the Remote Controlled Munition system (for practice), nine out of 125 samples were generated. Although 7.2 % misfires occurred, the acceptance test met the defense standards. Minimizing the probability of broken fuses is essential to reducing the number of samples and improving the AQL according to the process quality. In addition, it is necessary to increase military training and ensure user safety. In the case of practical grenades, hit-type detonators are applied. Unlike the normal design, which takes a hit by strikers, a different design of a hit by pressure from a pressure generator was used. This study analyzed the detonator surface through computational fluid dynamics. The results showed that the probability of functional weakness and retraction increased with increasing slope of the detonator surface. To overcome this, design changes were made to improve the fuse crimping process and increase the detonator holder seat. A performance test with the same number of samples from the whole quantity was operated. The probability of broken fuses was 0 %. Therefore, the reliability and performance of the ammunition can be improved and is expected to contribute to the drawing and process design when developing similar ammunition.
Keywords
Remote Controlled Munition System; Dud Probability; Detonator; Crimping; Holder Seat;
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