HMX对固体推进剂在强烈冲击条件下反应特性的影响

Effect of HMX on the reaction characteristics of solid propellants under strong impact conditions

为探索HMX对固体推进剂配方的低易损特性的影响,选取两种固体推进剂典型配方A和B(两配方的差异在于A中添加了20%的HMX,B不含有HMX),分别开展了不同冲击方向下的子弹撞击、高速破片撞击和聚能射流撞击试验。结果表明,子弹撞击试验和破片撞击试验中,固体推进剂A和B的响应类型均为燃烧;与子弹撞击试验的相比,样品中加入少量HMX对破片撞击试验中的燃烧速率提升较为明显,轴向和径向试验中燃烧速率分别提升了4.44倍和1.15倍;推进剂轴向撞击刺激响应程度平均为径向的1.61倍;在射流撞击试验中,样品A发生了爆轰,样品B发生了爆燃。由此可见,HMX对复合固体推进剂在射流试验中的响应特性具有显著影响。

To investigate the effect of HMX on the low vulnerability characteristic of solid propellant, including responses upon projectile impact, fragment impact, and jet impact, these experiments have been conducted on two kinds of typical solid propellants. The difference between these two propellants is one contains 20 % of HMX(Sample A), and the other one is blank(Sample B). The results showed that the response type of A and B are burning in projectile impact tests and fragments impact tests. In contrast with projectile impact tests, the combustion rates in fragments impact tests were increased faster. When there is a small amount of HMX in formula, the burning rates in axial and radial tests were increased by 4.44 and 1.14 times, respectively. The impact responsive degree of propellant in axial tests is 1.61 times higher than that in radial tests. In jet impact tests, A detonated while B burned rapidly, which means HMX has obvious effect on the responsive characteristic of composite solid propellant in jet impact tests.