Research on Availability Model of Test Aircraft Mission System Based on Mission

The flight test of transport aircraft is an important segment in the process of aircraft development. In the effectiveness evaluation architecture of the test aircraft mission system, the availability of the test aircraft mission system is not only an important basis for measuring the system in an executable mission state but also an important evaluation parameter for the effectiveness of the aircraft and its system in completing the mission. Based on WSEIAC system effectiveness evaluation model, this paper analyzes the availability of test aircraft and its system in mission, and proposes a feasible availability analysis model based on the mission characteristics of flight tests.