Study on Aircraft Reliability Assessment in Flight Test and Service Period

The reliability level is one of the most significant indexes to be considered in aircraft design process. In order to guarantee the objectivity and accuracy of results, the study on aircraft reliability assessment in flight test and service period is particularly essential. Proceeding from the practical engineering requirement, the whole reliability assessment process for aircraft is obtained through regulating the acquisition method of fault information as well as specifying the failure criterion and statistical principles. Based on the above process, utilizing the fault information in flight test and service, the reliability level of assigned aircraft is assessed in multiple dimensions. The results show that the eventual assessment results can reflect the real reliability level of aircrafts and satisfy the requirement of practical engineering