民用航空发动机振动配平功能设计

摘要

振动故障是航空发动机常见并且危害较大的故障,可能导致发动机运营事故或提前更换,增加航空公司运营成本,进行转子平衡是降低发动机振动的重要措施.根据民用涡扇发动机的设计特点和振动配平相关原理,设计了利用EVMU进行发动机振动配平计算的功能,并通过试验进行了验证.试验结果表明:采用根据EVMU计算出的方案配平发动机,能够有效地降低发动机N1振动值,满足航线使用需求.%Vibration failure is a common and serious failure for the aeroengine. Vibration failure may result in engine operation accidents or early replacement of the engine. This would increase the operating cost of the airlines. Engine balancing is an important measure to reduce the engine vibration. According to the design characteristics of the civil aircraft turbofan engine and the principle of vibration balancing, the engine balancing function that used the EVMU was designed. The design was verified by test. The results show that the vibration can be reduced after balancing according to the solution given by EVMU, and the design can meet the needs of airlines.