Maintainability Assessment and Verification Technologies of Civil Aircraft in Virtual Environment

Based on CATIA and DELMIA 3-D CAD modelling tool, the basic methods of virtual assessment and verification technologies on the maintainability of civil aircraft were studied by virtual reality technology and concurrent engineering thought.The elements of virtual maintainability environment were described, the implement and combination methods of maintenance scenes, maintenance objects, maintenance tools and human models in virtual environment were analyzed, the methods and process of creating virtual maintainability environment were put forward.The basic principle and procedure of virtual assessment and verification for civil aircraft maintainability were researched, the qualitative and quantitative methods of accessibility analysis, collision and interference analysis and personnel body posture analysis were proposed.The result of assessment and verification indicates that the total optimization of aircraft life cycle is effectively implemented by the methods, they are feasible for the concurrent optimization design of aircraft maintainability.