某型辅助动力装置启动失败故障分析  

Fault Analysis of Starting Failure of a Certain Auxiliary Power Unit

作　　者：王俊琦[1] 汪涛[1] Wang Junqi;Wang Tao(Chinese Flight Test Establishment,Xi′an 710089,Shaanxi,China)

机构地区：[1]中国飞行试验研究院,陕西西安710089

出　　处：《工程与试验》2020年第2期50-52,共3页Engineering and Test

摘　　要：某型辅助动力装置配装某型直升机开展试飞时,地面启动出现转速悬挂、超温现象,导致启动失败。通过试验数据分析对比发现,辅助动力装置启动供油控制逻辑正常,控制器工作正常,启动过程转子加速迟缓,排气温度快速升高。经分析排查,将故障定位于液压马达工作异常。更换液压马达后,辅助动力装置正常启动成功,参数正常。An auxiliary power unit equipped with a helicopter failed to start with rotor suspension and exceeding exhaust temperature during a ground test.The data analysis results showed that the start control system was working properly.APU rotor accelerated slowly,and exhaust temperature increased quickly.After analysis and troubleshooting,the hydraulic motor was considered to be malfunction,which directly caused the starting failure.After changing the hydraulic motor,APU started successfully and the working parameters returned to normal.

关 键 词：辅助动力装置 启动 转速悬挂 超温 

分 类 号：V235.12[航空宇航科学与技术—航空宇航推进理论与工程]