某型发动机滑油冷却风扇故障分析

The Fault of a Cooling Fan of Unguent in Engine Analyzing Again

某型发动机在飞行过程中,滑油冷却风扇部件发生了多起风扇损坏故障,直接威胁飞行安全,严重影响了装备的安全使用。对该故障的过程进行了分析,通过理论计算,发现前轴承预紧力偏小是导致故障发生的直接原因。

The engine of one helicopter was made fault in flying,this article looked back the process of the fault analyzing,passing account of theory,finding the spring force on front bearing was smaller is the efficient amse of the fault.