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China's civil aviation engine has remote fault diagnosis
The remote fault diagnosis expert system software for civil aviation engines developed by Civil Aviation University of China has passed the appraisal of Tianjin Science and Technology Commission. This means that China's civil aviation engine has a remote fault diagnosis "doctor", which adds protection to the safe flight of the aircraft.
Civil aviation engines are prone to failure due to their complex structure and high temperature and high speed working environment. According to ICAO statistics, during the six years from 1988 to 1993, 34 accidents occurred due to engine fire, blade failure, and engine detachment from the wing. Therefore, the safety and reliability of engine operation and fault prevention are the key to ensure flight safety, and the state monitoring and fault diagnosis of the engine is the fundamental way to ensure flight safety.
It is understood that at present, the main technical means of civil aviation engine fault diagnosis are trend analysis technology based on state information and engine model, non-destructive testing technology, lubricant-based fault analysis technology and vibration analysis. The above diagnostic methods have their respective scope of application and can complement each other in actual use. However, since airlines have routes all over the world, major airlines have several small airlines. If each airline has a comprehensive technical support system at each airport, it is neither economic nor realistic. An effective way is to use network technology to achieve remote fault diagnosis.
The subject of "Research on Key Technologies of Remote Fault Diagnosis of Civil Aviation Engines" undertaken by Civil Aviation University of China, from the perspective of engineering application, remote fault diagnosis expert system, engine knowledge acquisition method, collaborative diagnosis work environment, etc. in remote diagnosis of civil aviation engines In-depth study of key technical issues, on the basis of this, developed a remote fault diagnosis expert system software for civil aviation engines, and established a hybrid mode collaborative diagnosis work environment platform.
Relevant experts believe that this achievement can shorten the aviation engine fault diagnosis time and improve the maintenance efficiency. While improving the safety of existing engines in China and ensuring flight safety, it can save maintenance costs and improve economic benefits for airlines.
At present, many countries in the world have invested a lot of manpower and material resources in this area. GE Engine is working for 3,300 engines for 17 airlines, the US Air Force and various corporate jet airlines. 1400 aircraft provide remote condition monitoring and troubleshooting. According to GEES's research report, the use of engine remote condition monitoring and diagnostic technology has reduced the number of maintenance events by 35%.