航空发动机高能碎片非包容事件故障树分析

摘要

为了使航空发动机高能碎片非包容事件满足适航安全性要求，运用故障树法对航空发动机该事件进行安全性分析并提出了分析方法的步骤和流程。引入最小割集和概率重要的度的概念，利用Isograph Reliability软件画出故障树并计算出高能碎片不包容事件的发生概率、最小割集以及概率重要度，通过对比最小割集和概率重要度，确定导致发动机高能碎片不包容主要的失效形式，并提出了有针对性的措施。%To meet the airworthiness requirements of a aeroengine high-energy debris intolerance , apply FTA on the security analysis of a aeroengine high-energy debris intolerance .Introduce the concept of minimal cut sets and probability importance ,use Isograph Reliability to draw Fault Trees and determine the probability of occurrence of events ,minimal cut sets and probability importance .Identify major failure modes cause aeroengine high-energy debris intolerance ,and proposed targeted measures .