飞机起落架可靠性评估的一种方法

本文提出了用故障树分析方法,对飞机起落架进行可靠性评估。这种评估有利于设计方案的比较和选择。可靠性的定量评估可以为工程决策提供重要的依据。已知某机起落架的可靠性框图为串联系统,其建成的故障树为单调关联系统故障树。若已知故障树各底事件发生的概率数据,则采用不交化方法即可计算出某机起落架在寿命期内的可靠度。

An Approach to Reliability Evaluation of an Aircraft landing Gear System

In this paper,the fault tree analysis is presented for reliability evaluation of an aircraft landing gear system. This reliability evaluation is useful to the design plan for comparison and choice. Therefore, the quantitative evaluation of reliability is an important foundation for engineering policy decision. If it is known that the reliability sketch of the aircraft landing gear system is a series system,then the fault tree is a coherent system one. If the fault probabilities of every basic event of the fault tree are known,then the disjoint algorithm can be used to calculate the reliability of the landing gear system in its life period.