CFM56-3发动机高压点火导线可靠性分析  

Reliability Analysis of CFM56-3 Engine High Voltage Ignition Wire

作　　者：孔祥芬[1] 蔡峻青 张利寒 王国东[2] KONG Xiang-fen;CAI Jun-qing;ZHANG Li-han;WANG Guo-dong(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;Zhengzhou University of Aeronautics,He’nan Zhengzhou450000,China)

机构地区：[1]中国民航大学航空工程学院,天津300300 [2]郑州航空工业管理学院,河南郑州450000

出　　处：《机械设计与制造》2020年第5期289-292,共4页Machinery Design & Manufacture

基　　金：大学生创新创业项目—铰链有磨损时飞机舱门的运动可靠性研究IECAUC2017023;教育部人文社科项目—复杂制造过程改进产品可靠性的试验设计与分析研究17YJC630151。

摘　　要：高压点火导线是航空发动机点火系统中故障率较高的一个部件,其可靠性关系到发动机的点火可靠乃至于整个飞机的飞行安全。以国内某航空公司B737机队发动机高压点火导线维修数据为基础,采用可靠性方法对其进行分析。根据直方图进行分布初选后以极大似然估计法进行参数估计,然后用Minitab软件对各分布进行检验,以此选出拟合程度最好的寿命分布。检验结果高压点火导线故障数据服从指数分布,在此基础上结合航空维修相关理论给出相应的维修建议。High-voltage ignition wire is a component in the aero-engine ignition system with a high failure rate,whose reliability is related to the ignition reliability of engine and even the flight safety of the entire aircraft.Based on the maintenance data of B737 fleet aero-engine high voltage ignition wire from one domestic airline,the reliability method is used to analyze it.Use MLE method to estimate parameters after preliminary select distributions based on histogram,and then used Minitab to test each distribution and select the best fitting life distribution.According to the inspection result,the high voltage ignition wire failure data obeys index distribution. On this basis,corresponding maintenance suggestions are given combining aviation maintenance theory.

关 键 词：高压点火导线 可靠性分析 参数估计 假设检验 指数分布 维修建议 

分 类 号：TH16[机械工程—机械制造及自动化]