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提出了一种飞机在导弹喷射碎片威胁下的易损性计算方法.该方法采用飞机及部件的有限元模型作为输入,首先以‘射击线扫描法’对飞机在单枚碎片打击下的易损性进行计算,然后以马尔可夫链法计算喷射碎片打击下的易损性.算例给出了飞机周围典型爆炸点位置引爆导弹战斗部的杀伤概率分布,并对导弹与飞机的交会区域进行了分析,验证了所提出方法的可行性与正确性.应用中表明,所提出的方法通用性强,易于实现;方法中考虑了导弹飞行速度、引爆点位置、装药质量比、碎片形状、空气阻力、飞机飞行高度及速度等因素,易损性计算结果具有一定的客观性;导弹碎片威胁下的易损性评估对于飞机生存力增强设计、导弹杀伤效能评估与引信优化设计具有指导意义.
A method to calculate the vulnerability of aircraft under the threat of missile ejection debris is proposed. The method uses the finite element model of aircraft and components as input. Firstly, the method of shooting line scanning is used to detect the vulnerability of the aircraft under single fragment attack Then calculate the vulnerability under the impact of jet fragments by using Markov chain method.The example gives the distribution of the killing probability of the detonated missile warhead at the typical explosion point around the aircraft and the missile- The feasibility and correctness of the proposed method are verified, and the application shows that the proposed method is versatile and easy to implement. The method takes into account the flight speed of the missile, the position of the detonating point, the charge mass ratio, the shape of the debris, Air resistance, aircraft flight altitude and speed, the vulnerability calculation results have some objectivity. The vulnerability assessment under the threat of missile debris has guiding significance for the enhancement design of aircraft survivability, the evaluation of missile killer effectiveness and the optimal design of fuze.