Real-time performance reliability prediction for civil aviation aircraft engines based on multiple performance measures

The civil aviation aircraft engine was studied in this paper,and the performance reliability of the engine was also studied by use of performance degradation theory.Firstly,by analyzing the performance degradation process of the engine,the time-varying performance degradation model based on state space method was built,and the performance trends were predicted by using Kalman filtering.Then,considering the correlation of multiple performance parameters,the real-time performance reliability prediction model was developed by using stochastic process theory to predict the degradation time of engines.These models were applied to practical situations.It shows that the proposed methods are feasible and the prediction accuracy meets the needs of the project.Also,it provides a foundation for scientific management of engine fleet of airlines.