Experiment on Spread Processes of the Spreadable Aimed Warhead
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摘要: 展开式定向战斗部具有较高的破片利用率，对该类型战斗部的研究有助于提高空空导弹的终端毁伤威力。基于展开式定向战斗部的工作原理和结构，设计加工了原理样机，并将其用于实验。利用高速摄影技术对该战斗部的展开过程进行记录。结果表明，所设计的展开式定向战斗部的原理样机展开过程符合理论预期，增加驱动药的装药量可以有效缩短战斗部的展开时间。另外，外部装药槽中的驱动药多于内部装药槽的加载方式更有利于各主装药的同步展开，还可以有效降低起爆触发系统的设计难度。Abstract: The research on the expandable aimed warhead is expected to contribute a lot to the improvement of the damaging capability of the airborne missile due to the high efficiency of the warhead fragments' utilization. In this work we designed a prototype of this type of warhead based on its damaging mechanism and structural features, and put it to actual tests. The spreading process of the main charge was recorded with the high speed photography technology. The results show that this process matches with our numerical prediction, and the spreading time of the warhead was significantly shortened as the mass of the driving charge increases. Moreover, loading a greater quantity of charge in the external notch than in the internal one will benefit the synchronized spreading of all the main charge notches and also effectively facilitate the design of the detonation trigger system.
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Key words:
- aimed expansion warhead /
- principle prototype /
- spread experiment
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表 1 材料参数
Table 1. Material parameters
Material ρ/(g/cm3) σ0.2/(MPa) σb/(MPa) δ/(%) LY12 Al 2.71 ≥265 ≥410 ≥12 45 steel 7.85 ≥356 ≥600 16 
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表 2 战斗部展开时间
Table 2. Spread time of the warhead
No. mtotal/(g) t/(ms) 1 15 14.7 2 16 12.6 3 21 8.7
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