含ACP改性双基推进剂的燃烧转爆轰实验研究

The Experimental Study on Deflagration-to-Detonation Transition in Modified Double-base Propellant with ACP

为研究快燃物ACP对改性双基推进剂燃烧转爆轰性能的影响,利用DDT管建立相应的测试系统,对推进剂在多孔装药条件下的燃烧转爆轰过程进行了实验研究。实验中采用电离探针和压电式压力传感器记录了燃烧与爆轰波阵面的位置-时间关系和压力波形图,利用实验结果计算并比较了波阵面的传播速度、爆轰形成点的位置以及药床不同位置的压力值。结果表明,快燃物ACP能够增大改性双基推进剂转爆轰的倾向,当ACP的质量分数从5%增加到7%时,装药燃烧转爆轰的倾向增大比较明显。

To study the effect of ACP, a fast burning energy material, on the deflagration-to-detonation transition （DDT） in the modified double-base propellant, the experimental study of DDT process of propellant under the condition of porous charge is carried out with the testing system established by the DDT tube. The positon-time relationship and the stress wave shape for the front of deflagration and detonation are recorded using the ionization probes and piezoelectric stress sensors. The experimental results of the propagation velocity of wave front, the location of the detonation transition point and the pressure in different positions of the charge bed are calculated and compared. The results show that the fast burning material ACP can increase the transition tendency of the modified double base propellant to DDT. When the percentage of ACP variates from 5% to 7% ,the tendency of the transition from deflagration to detonation in charges increases obviously.