中文摘要：

中心装药对燃料空气炸药（FAE）装置有重要的影响。利用高速相机测定得到采用耦合装药的FAE装置的抛散速度的最大值为408.5 m·s-1,利用LS-DYNA软件计算得到采用耦合装药的FAE装置的抛散速度的最大值为412.5 m·s-1,误差不足1%,计算方法精确可靠。采用相同的方法对采用不同中心装药方式的FAE装置的燃料抛散速度、中心装药爆炸空腔、空腔内温度进行了计算。结果表明,采用不耦合装药的FAE装置不同位置的抛散速度相差小,约100 m·s-1,速度分布均匀,燃料利用率高;爆炸空腔半径在端部处缩小1/3左右,呈现出中间大,两端小的分布,使二次起爆药包的安装位置有更多选择。同时,与采用耦合中心装药的FAE装置相比,不耦合中心装药的FAE装置爆炸空腔内的温度衰减较快,安全性更好。

英文摘要：

The way of center explosive charge has an important influence on the fuel air explosive（ FAE） devices. Through the determination of high speed photography,the maximum dispersal velocity of the coupling charge FAE device is 408. 5 m·s- 1,and its calculation is 412.5 m·s- 1 by LS-DYNA. The deviation is less than 1%,hence,the method is accurate and reliable. Using the same method,the dispersal velocity,explosive cavity and temperature of FAE devices with different center explosive charges were studied. Results show that in case of uncoupling FAE devices,the dispersal velocities in different position have a small amplitude difference,which is about 100 m·s- 1. That is to say the velocity distribution is uniform and the fuel efficiency is high while the explosion cavity radius diminishes about one third in the end and presents a distribution of large in the middle and small in the ends which makes the position of second ignition equipment have more choices. At the same time,compared with the coupling center explosive charge,the explosive cavity temperature for the uncoupled center explosive charges drop quickly,which results in a better safety.