某型航空发动机早期故障特征分析

针对某型飞机飞行时座舱产生的异常振动问题,首先阐述了航空发动机转子系统典型故障的现象及原因；分析了可能引发座舱异常振动的各个激励源,初步判断异常振动的来源；其次通过地面试车试验,采集了座舱异常振动信号及对应的发动机振动信号,提取了座舱异常振动频率的主要能量成份,分析了发动机上各机匣的频谱成份；最后,找出了引发动座舱异常...

Analysis of Early Faults Feature for Aero-Engine

In view of the aviation cockpit's abnormal vibration in flying,firstly,the symptom and cause of aero-engine rotor's typical fault were introduced.The probable cause of the aviation cockpit's abnormal vibration was analyzed,and the cause of the abnormal vibration was judged preliminarily.Secondly,signal of aviation cockpit and aero-engine were collected by ground running aero-engine,then,the abnormal vibration frequency of aviation cockpit have been extracted from the collected signal,the frequency of aero-e...