L8 Aircraft Flaps Retraction System Reliability Verification Tests And Life Test Study

According to concrete conditions of the wing flap retraction-extension system of the 18 trainer aircraft, this paper ca nes out a research into the relibility demonstration test and the life test plans of the system, and deals with some key issues related to the test in a deep manner, such as relation between the reliability test parameters and the reliability indexes, converting from working time(frequency), composite test profiles, the mathod determining reliability test parameters for success ratio and so on. The result of the reserch can also be generalized and applied to other system or equipment to be conduct the reliability demonstration test and the life test. Based on the characteristics of the system, two kings or test plans, exponent life and success ratio. Are adopted about reliability demonstration test. In adddition, the integrated test design of the reliability demonstration test and the life test is discussed in the paper. In making reseach on test profile, the environment conditions within the limit of the time and the times are expounded , and this indicate that the result can solve both the test problem of continnous work system and ones of discrete work system.