涡轴发动机高寒飞行试验和结果分析

Flight test study and results analysis of turboshaft engine at extremely cold environment

为了验证涡轴发动机的环境适应性,开展了高寒环境下的涡轴发动机飞行试验。通过分析发动机在低温下工作受到的影响,总结了高寒条件下的试飞方法,之后针对涡轴发动机高寒试飞结果,包括起动时间偏长、滑油压力高、油路结冰、发动机进入应急状态等现象进行了分析,并讨论了相应的改善措施,为高寒环境下的发动机使用提供了借鉴。

In order to validate the environmental suitability of the turboshaft engine,flight tests of the turboshaft engine at extremely cold environment were carried out. Through analyzing the affect of engine working under low temperature,the flight test methods at extremely cold environment were concluded. The flight test results of turboshaft engine were analyzed,including longer start time,higher oil pressure,icing in fuel pipe,engine entering emergency state,etc. The improving measures were discussed,which could provide reference for the use of the engine at extremely cold environment.