一、前言人们已做了大量的试验来评述靠吸收辐射能量推进的火箭发动机性能。这种辐射能量来自远处的重复式脉冲激光器。我们所谈的激光推进,简单说就是由激光器提供一种高密度的能量作为火箭的推力,因此,这种推进方式不必在发动机上带大量的能源,而只需要通过吸收高功率激光的辐射能量就可以实现。这种辐射吸收式推进剂可以是一种高温等离子体。其比冲可达1000秒以上,而且激光器的可用功率又限制了有效推力的大小。比冲为1000秒的用 I. INTRODUCTION People have done a great deal of experimentation to comment on the performance of rocket motors propelled by the absorption of radiant energy. This radiant energy comes from a repetitive pulsed laser in the distance. We talk about the laser propulsion, simply to provide a high-density laser as the thrust of the rocket, so this approach does not have to bring a lot of energy in the engine, but only by absorbing high-power laser radiation energy Can be achieved. This radiation absorbing propellant can be a high temperature plasma. The specific impulse of up to 1000 seconds or more, and the available power laser also limits the effective thrust size. Specific impulse for 1000 seconds