In order to improve the maintenance efficiency of civil aircraft cargo handling system and reduce downtime, a new civil aircraft cargo handling system considering the influence of the importance ranking of maintenance qualitative attributes on repair time when performing maintainability design. By expressing the importance ranking of three qualitative attributes representing the maintenance process to construct an evaluation system,and using the analytic hierarchy process and the maintainability allocation model, combined with the prior probability of failure, with the target of shortest average repair time, compare program evaluation results and achieve the optimal solution . By the evaluation results of the system in the parallel failure mode to proved the validity of the model. The results show that when consider the operability of the highest importance of maintainability qualitative attributes the average repair time is the shortest. In the early stage of equipment maintenance design, the evaluation model can provide effective guidance for experts on equipment maintenance design decision.
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史永胜,周鑫. 民机货运系统维修性定性属性排序方法[J]. 科学技术与工程, 2020, 20(15): 6048-6053. Shi Yongsheng, Zhou Xin. Maintenance Qualitative Attribute Sorting Method of Civil Aircraft Cargo Handling System[J]. Science Technology and Engineering,2020,20(15):6048-6053.