导弹喷射碎片威胁下的飞机易损性评估方法  

Method for Assessing the Vulnerability of Aircraft to Spray Fragments of Missile

作　　者：裴扬[1] 宋笔锋[1] 韩庆[1] 

机构地区：[1]西北工业大学航空学院,西安710072

出　　处：《系统工程理论与实践》2007年第2期161-166,共6页Systems Engineering-Theory & Practice

基　　金：国家自然科学基金(10372082);中国博士后基金(20060400301)

摘　　要：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 is proposed for calculating the vulnerability of aircraft to spray fragments of a missile. The input dada of aircraft or components for vulnerability assessment is organized by the finite element models. Firstly, the ＇ shot line scanning method＇ is used to calculate the single hit vulnerability of aircraft by a fragment of missile. Then, utilizing Markov-Chain method, the vulnerability of aircraft is obtained at the threat of multiple hits by spray fragments. Example has given the distributions of probabihty of kill at the typical missile detonation locations around the aircraft. In this example, the interaction regions of aircraft with fragments of missile are analyzed and the correctness and feasibihty of the proposed method are demonstrated. Application shows that （ 1 ） the proposed method is generic and easy to be programmed; （2） in order to provide a realistic and effective aircraft vulnerability assessment, the method has taken into consideration the factors such as missile velocity, missile detonation location, missile charge ratio, fragment shape, air drag, aircraft altitude, and aircraft velocity; （3） the vulnerability assessment of aircraft to fragments of missile is useful for aircraft survivability enhancement design, missile effectiveness assessment and optimizing missile fuse design.

关 键 词：易损性 杀伤概率 碎片 马尔可夫链 生存力 

分 类 号：V221[航空宇航科学与技术—飞行器设计]