中文摘要：

利用Lagrange方程建立了飞机在任意空间机动飞行时发动机安装在飞机上任意位置条件下不平衡多盘、多质量和多轴承线性及非线性柔性转子系统动力学的统一模型，讨论了飞机的空间机动飞行对发动机转子系统动力特性的影响．结果表明飞机的空间机动飞行不仅在发动机的转子系统上产生了非周期性的附加外激励力，而且还会产生附加的阻尼和刚度效应，这些效应不仅会影响转子系统运动轨道的大小而且会使转子系统运动轨道的中心发生偏移，从而可能使发动机转子与定子之间发生局部的碰磨．因此，在分析航空发动机转子系统的动力特性时，必须考虑飞机机动飞行因素对转子系统动力特性的影响．

英文摘要：

A general motion model of a linear or nonlinear flexible aeroengine＇s rotor with unbalance multi-rigid-disk, multi-lumped-mass and multi-bearing was presented by using Lagrange＇s equation during any maneuvering flight and for any position of aeroengine installed in airplane. The influences of different maneuvering flights on the dynamic characteristics of an aeroengine＇s rotor system were discussed. It is shown that an additional damping effect, an additional stiffness effect and an additional un-periodic external exciting force acted on the aeroengine＇ s rotor system may be introduced due to the maneuvering flight, which will great affect the dynamic characteristics of an aeroengine＇s rotor system, especially increasing the vibration amplitude of the aeroengine＇s rotor system and significantly shifting the center of motion orbit of the aeroengine＇s rotor system to the uncentralized position may result in the particle impact between the rotor and the stator. The influence of the maneuvering flight on the dynamic characteristics of the aeroengine＇s rotor system must be considered in studying the dynamic characteristics of the aeroengine＇s rotor system.