Method for optimizing product planned maintenance interval of civil airplane manufacturer

Abstract

The invention discloses a method for a civil airplane manufacturer to optimize a product plan maintenance interval thereof, and belongs to the technical field of aviation, the method for the civil airplane manufacturer to optimize the product plan maintenance interval thereof comprises the following steps: S1, collecting reliability data of an aviation product; s2, mapping the reliability data into a life sample; s3, removing abnormal data in the life sample; s4, selecting a fault distribution model according to own attributes, working environments and failure types of specific parts of the aviation product; s5, deducing a confidence interval of parameters in the fault distribution model by using the life sample and a distribution function of the parameters in the fault distribution model; s6, testing goodness of fit between the fault distribution model and an actual sample; and S7, optimizing the maintenance interval based on the cost rate, the availability and the reliability. By adopting the technical scheme, the maintenance interval of the aircraft can be scientifically and reasonably optimized on the premise of ensuring the predetermined safety of the aircraft.

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