某型直升机尾减速器滑油温度故障研究

Study on the Oil Temperature Failure of a Certain Helicopter Tail Reducer

针对某型直升机飞行过程中出现尾减速器滑油温度表不指示的故障,通过原理分析及试验验证对故障进行定位,排除了尾减速器故障、滑油温度传感器故障及机上相关线路故障的可能,将故障锁定在温度压力组合表上,进一步分析确定了产生故障的原因,并对分析结果进行了试验验证。

Tail reducer oil thermometer fails to indicate during flight of a certain type of helicopter.By principle analysis and test verification,the failure is located,and the possibility of reducer failure,oil thermometer failure and on-board circuits’ failure is eliminated.Therefore,the failure of pressure type thermometer is ascertained and the reason of the trouble is confirmed through further analysis.And finally,the analysis results are verified by experiments.