对“爱国者”导弹发动机激光破坏的计算分析

Calculation and analysis of laser destruction for engine of Patriot missile

导弹主动段飞行时，固体发动机壳体受到燃气内压、发动机推力等载荷的作用，在此情况下，如又受到连续激光的辐照，在热－ 力联合作用下，发动机壳体有可能出现局部断裂，发生爆裂型破坏。文中以美“爱国者”导弹固体发动机为研究对象，对其燃烧时壳体受连续激光辐照的破坏效应进行了有限元计算，分析了改变激光光斑直径与激光功率密度对导弹固体发动机壳体破坏的影响。

When a missile flies in the boost phase, its case of solid engine is influenced by loads, such as internal pressure of burning gas and thrust etc. In such a state of affairs, if the missile is irradiated by the continuous laser, the case of engine may be occur to split partly and bring out bursting destruction under this heat\|force combined action. Taking the solid engine of Patriot missile for object of study, this article makes the finite element calculation on the destructive effects by continuous laser irradiation to the case of engine when burning, and analyses the destructive effects of changing the spot diameter and power density of laser on the case of missile solid engine.