一种新的飞机等效单一易损面积计算方法

基于Monte-Carlo技术,提出了一种新的飞机等效单一易损面积计算方法.将飞机单一易损部件及多重易损部件(余度部件)的杀伤事件模拟成'放球入盒模型',每个盒子面积大小对应于每个部件的易损面积.通过对威胁的打击点进行随机均匀抽样来获得导致飞机杀伤的期望打击数目,从而可以计算飞机等效单一易损面积.算例验证了所提出方法的正确性与可行性.分析表明,该方法弥补了目前计算方法存在的两个主要缺陷:①它可以进行含有多组多重易损部件的飞机等效单一易损面积计算; ②当每组多重易损部件组中的部件具有不同易损面积时,该方法仍然适用.

New Method for Calculating Aircraft Equivalent Single Vulnerable Area

A new method is proposed for calculating the aircraft equivalent single vulnerable area using Monte-Carlo simulation technique. The method simulates the kill events of single vulnerable components and multiply vulnerable components or redundant components to ‘Model of Filling Boxes with Balls’, in which the area of each box is equal to the component's vulnerable area. By randomly and uniformly sampling the threat hit locations, the expected number of hits required to kill an aircraft can be given and the aircraft equivalent singly vulnerable area can be attained. Examples demonstrate the correctness and feasibility of the proposed method. Analysis show that the developed method overcomes two shortcomings of currently used methods. (1) It can calculate the equivalent single vulnerable area of aircraft with several sets of multiply vulnerable components, and (2) When the components of each multiple set have different vulnerable areas, the method also applies.