摘要
为查找某型航空发动机第5级转子叶片掉块连续集中爆发,严重影响飞行安全和外场使用故障的原因,从部队使用飞参数据入手,在明确其掉块故障机理的基础上,借助于数理统计开展该故障分析研究。发现长期以来所认为的叶片掉块故障很大程度上与发动机在放气带转速范围停留时间过长有关的结论不成立,该故障与发动机在某一特定转速区间范围的工作时间密切相关。为该型发动机第5级叶片掉块故障的综合治理提供了新思路。
In order to find out the reason that the continuous appears of the fifth stage blade failure which affects the flight safety and in field operation, the failure reasons were analyzed by the mathematical statistics theory from the army＇s flight data based on the mechanism of the blade failure. The results show that the reason caused the blade failure is not the long residence time in the speed range of engine air bleed, it is the operation time of a certain rotor speed range. It provides new ideas for the comprehensive improvement of the engine＇s fifth blade failure.
出处
《航空发动机》
2014年第5期33-38,共6页
Aeroengine
