固体推进剂激光烧蚀推进流场分析

Flow Field Development Process of Solid Propellant for Laser Ablative Propulsion

利用高速纹影方法对固体推进剂对激光推进作用过程进行了测试,获得了脉冲激光能量作用下推进剂表面流场的产生及发展演变过程。分析结果表明,瞬态激光能量作用下,除了分解、燃烧产物产生的流动以外,还存在一个导引波的快速运动过程,在105～109W/cm2激光功率密度范围内,推进剂类型对其传播速度影响很小。

The analysis of field development process is important for laser ablative propulsion mechanism.The flow field development process of different solid propellants for laser ablative propulsion was investigated.The results show that besides the flow of decomposition product,there still exists a high speed guide shock wave,and within 105~109W/cm2 laser power,the speed does not change much as the propellant ingredient changes.