偏心罩在内嵌馈电结构EFP战斗部中的应用

Eccentric Liner in the Amelioration of EFP Warhead Design with Embedded Feed Structure

采用中间馈电布局的毫米波敏感体制末敏弹,需要将部分敏感器件嵌入弹载爆炸成型弹丸(EFP)战斗部的装药内,改变了装药结构并影响了爆轰波的传播,给EFP的成型过程带来了较大的负面影响。为了调整药型罩的壁厚分布,进而对药型罩的压合过程施加影响,设计了偏心药型罩结构并配用于EFP战斗部,以控制药型罩完全向后翻转,使其形成大长径比的成型弹丸。实验中测得的EFP成型及侵彻结果基本符合数值模拟的预期,证明配用偏心布局药型罩的有内嵌结构EFP战斗部,能够得到飞行稳定的大长径比成型弹丸,可以解决敏感器件内嵌给战斗部成型带来的负面影响。

The terminal-sensitive ammunition fitted with a central feedback layout for millimeter wave sensi- tive system needs to be embeded with some sensitive devices in the charge of EFP （Explosively formed pene- trator） warhead, resulting in changing the charge structure, affecting observably the detonation wave propaga- tion, and producing significant negative effects on the shaping process of EFP. In order to get a large L/D ratio of the penetrator, we proposed to use an eccentric spherical liner structure to adjust the thickness of the liner, which successfully changed the pressing process of the liner and made it turn backwards. The experimental shape parameters and speed indicators basically meet with the predicted results of the numerical simulation With the eccentric spherical liner, EFP warhead can be formed with a large L/D ratio and good flight stability. This design removes the negative effects produced on the warhead shaping by the embeded sensitive devices.