Aeroengine condition monitoring and maintenance data processing system oriented to lifecycle management

To collect, manage, process and predict performance data of on-wing aeroengine so as to provide support for customization of aeroengine in performance simulation and maintenance strategy, an aeroengine condition monitoring and maintenance data processing system was developed, which was an important part of aeroengine lifecycle management system. The system was composed of condition monitoring and maintenance data management module, aeroengine performance trend fitting module, automatic alarm module and report generation module. An aeroengine performance parameters and test parameters trend fitting model was proposed based on high-ordered equation of regression, and an aeroengine performance comprehensive evaluation value transfinite alarm model was presented based on improved Analytic Hierarchy Process (AHP). The application result in Air China indicated that the mentioned models and system were applicable.