随机因素对火药激光点火过程影响的研究

EFFECTS OF RANDOM FACTORS ON THE PROCESSES OF LASER IGNITION OF PROPELLANTS

激光点火可以改善密实药床的点传火性能 ,避免局部点火。但是 ,在激光点火过程中 ,药粒直径、激光能量、激光直径、脉冲宽度等参量都是随机变化的 ,这些随机因素会影响激光多点点火的同时性和一致性。

Laser ignition can improve the ignition performance of packed propellant beds and avoid local ignition. Nevertheless, in the process of laser ignition, such parameters as particle diameter, laser energy, laser diameter, pulse width are all random. In this paper, the effects of these random factors on the ignition delay of single particle and on the ignition delay of multipoint uniform ignition are investigated.