Abstract
Aircraft engine is an important guarantee for aircraft safety, and its failure mode and health management have become the top priority. However, there are very few researches on aircraft engine health management. This article mainly summarizes the current research status of aircraft engine health management (EHM) from the aspect of aircraft electronic system, focuses on the overall structure, functional areas and key technologies of EHM system design, points out the design requirements of EHM system, and finally proposes EHM system. The design must improve the monitoring accuracy of the sensor to meet the monitoring requirements of more than 0.1%. High-precision monitoring data is more conducive to engine fault detection and processing, and EHM will therefore develop in the direction of real-time, intelligent, integrated and networked.
Highlights
Engine Health Management (EHM) [1] [2] is used to ensure aircraft flight safety, reduce usage costs and guarantee costs, take proactive measures to monitor the health of the engine, predict the trend of performance changes, predict the timing of component failures and remaining service life, and take necessary measures to alleviate engine performance degradation, component failure/failure decision-making
According to literature [3], currently, foreign engine health management (EHM) has developed to the engineering verification stage, and many technologies have been verified and demonstrated on platforms such as C-17 and F/A-17, which proves that EHM can significantly improve the engine performance, reduce operating costs and improve engine reliability and safety
1) Performance monitoring and component failure diagnosis When the air flow passes through the engine, the engine failure can be reflected by the aerodynamic thermal parameters and performance parameters of the air circuit
Summary
Engine Health Management (EHM) [1] [2] is used to ensure aircraft flight safety, reduce usage costs and guarantee costs, take proactive measures to monitor the health of the engine, predict the trend of performance changes, predict the timing of component failures and remaining service life, and take necessary measures to alleviate engine performance degradation, component failure/failure decision-making. According to literature [3], currently, foreign EHM has developed to the engineering verification stage, and many technologies have been verified and demonstrated on platforms such as C-17 and F/A-17, which proves that EHM can significantly improve the engine performance, reduce operating costs and improve engine reliability and safety. Combining the structural characteristics of the EHM system, this article mainly introduces the EHM system design technology, design requirements and development trends
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