Method for distributing vulnerability index of combat aircraft system

Abstract

A method for distributing a vulnerability index of a combat aircraft system, comprising the steps as follows: determining a vulnerability initial parameter under a condition that menace and attack are determined through establishing a certain type fighter vulnerability model, then determining the times of the attack suffered by an aircraft, and the killing probability and the survival probability of each attacked component, determining the self-existent state of the aircraft and attacked probability of each state, substituting the obtained data into computational formulas of a comprehensive importance degree and a Griffith importance degree to obtain the comprehensive importance degree and the Griffith importance degree computational of each component, finally distributing the vulnerability of the whole aircraft by using a vulnerability index distribution method to obtain the vulnerability of each component. The method of the invention can be used for reducing the vulnerability of the component with large vulnerability after obtaining the vulnerability distributed to each component to reduce the vulnerability, thereby increasing the aircraft survivability.

Description

technical field [0001] The invention relates to the field of vulnerability reduction design of aviation combat aircraft, and specifically allocates vulnerability indexes of aircraft systems based on comprehensive importance and Griffith importance theory. Background technique [0002] Vulnerability is defined as the ability of a combat aircraft to withstand the threat of man-made hostile environments in a combat state. Given the vulnerability of aircraft components is an important task in survivability assessment, it should be considered in the early stage of aircraft design. It provides guidelines for effectively improving aircraft survivability, and puts the main design tasks on highly vulnerable components in a targeted manner, so as to achieve efficient and optimal design of aircraft survivability. [0003] The higher the vulnerability of the aircraft, the easier it is to be killed when it is hit, and the more it will reduce the ability of the aircraft to complete the t...

AI Technical Summary

Problems solved by technology

Northwestern Polytechnical University proposed a method for sorting the vulnerability of aircraft components in the invention with the application number 201410352457.9. This method provides five kinds of vulnerability ranking methods, which are respectively structural probability importance, key importance ( Criticality), FV importance, RAW importance and RRW importance, but these five methods are only suitable for two-state systems, that is, when the aircraft is hit, the aircraft has a killing state and a non-killing state, without considering the intermediate state of the aircraft. intermediate states do not result in aircraft kills, but affect aircraft performance and mission efficiency

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