Aircraft Mission Reliability Evaluation Based on Monte Carlo Simulation

The level of mission reliability determines whether the aircraft can exert its full operational effectiveness when performing a mission. The application of traditional numerical calculation methods in mission reliability evaluation is limited, and simulation methods are gradually paid attention to. This paper analyzes the system composition and mission profile of the aircraft, constructs the mission reliability model by using the reliability block diagram, expresses the logical relationship of the mission reliability block diagram by Boolean operation, improves the traditional Monte Carlo simulation method, and introduces the concept of working state sequence to realize the multi-phase mission reliability calculation. The simulation program is written by Python, and verified by an example. The results show that the evaluation method has high availability.