Citation

Zuo HF, Zhang HJ, Rong X. Hangkong Dongli Xuebao 2006; 21(4): 716-721.

Affiliation

College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Copyright

(Copyright © 2006, Hang kong dong li xue bao bian ji bu)

DOI

unavailable

PMID

unavailable

Abstract

Condition based aero-engine maintenance (CBM) decision based on condition monitoring information is an important issue to the safety operation of airlines. In this paper aero-engine historical data of removal due to performance degradation were analyzed, and a functional relationship between aero-engine performance parameters and time-on-wing was established using Weibull proportional hazards regression model. Furthermore, maintenance decision threshold is determined by the minimum maintenance cost or maximum availability strategy. Thus, an objective quantitative decision method for optimal maintenance decision was provided. Finally, the failure data of CF6 aero-engines were analyzed in detail as an example using the method mentioned above. The result shows that the method has high practical value for aero-engine CBM decision.