Survivability strengthening/vulnerability reduction designs have become one of the most important design disciplines of military aircraft now. Due to progressiveness and complexity of modern combat aircraft, the existing vulnerability modeling and computation methods cannot meet the current engineering application requirements. Therefore, a vulnerability modeling and computation methodbased on product structure and CATIA is proposed in sufficient consideration of the design characteristicsof modern combat aircraft. This method directly constructs the aircraft vulnerability model by CATIA orthe digital model database, and manages all the productcomponents of the vulnerability model via aircraftproduct structure. Using CAA second development, the detailed operations and computation methods of vulnerability analysis are integrated into CATIA software environment. Comprehensive assessment data and visual kill probability Iso-contours can also be presented, which meet the vulnerability analysisrequirements of modern combat aircraft effectively. The intact vulnerability model of one hypothetical air-craft is constructed, and the effects of redundant technology to the aircraft vulnerability are assessed, which validate the engineering practicality of the method.

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