Research on Safety Assessment Method on Integrated Modular Avionics Based on Cascading Effect Analysis

Abstract

Abstract As a key airborne electronic system of civil aircraft, the safety of IMA is very important. IMA has many interconnected systems and wide influence scope, the influence of its failure consequences is difficult to determine, and therefore a method for IMA safety assessment based on IMA has many interconnected systems and wide influence scope, the influence of its failure consequences is difficult to determine, and therefore a method for IMA safety assessment based on Firstly single and combined IMA equipment failure modes are identified, and then for each IMA failure mode, Firstly single and combined IMA equipment failure modes are identified, and then for each IMA failure mode, direct effect on user system and indirect effect on interconnected system are analysed, multiple round interactions until all effects are captured, Finally aircraft-level effect is analysed, and through simulation experiment to further verify.