不同粘弹减摆器连接形式下的旋翼系统气动弹性稳定性分析  

Analysis of Aeroelastic Stability for Helicopter Rotor with Different Elastomeric Lag Damper Connections

作　　者：周超[1] 李书[1] 

机构地区：[1]北京航空航天大学飞机设计所,北京100083

出　　处：《飞机设计》2007年第4期1-5,共5页Aircraft Design

摘　　要：建立了粘弹减摆器不同连接形式时的旋翼系统气动弹性稳定性分析模型。旋翼动力学模型考虑了非定常空气动力和桨叶挥舞/摆振运动的耦合。采用基于复模量的非线性VKS改进模型,建立叶间粘弹减摆器和普通连接粘弹减摆器的力矩方程。分别采用特征分析法及时域分析法计算了普通连接形式和叶间连接形式的直升机旋翼系统的动稳定性。通过对工程实例的分析计算,得出了一些有意义的结论。An analytical model was developed for aeroelastic stability of helicopter rotor with general connections or inter-blade connections nonlinear elastomeric lag dampers. The analytical model considered factors, such as unsteady aerodynamic and blade flap/lead-lag coupled motion. An improved nonlinear VKS model based on complex modulus is applied in momental equation of general connections and inter-blade connections nonlinear elastomeric lag dampers. The method of eigenvalue analysis is used to investigate helicopter rotor stability in hover flight while simulink emulation in time-domain is used in forward flight with two connections of dampers. Results of engineering examples show that the method is convenient for use.

关 键 词：旋翼 气弹稳定性 叶间粘弹减摆器 特征分析 时域分析 

分 类 号：V212.5[航空宇航科学与技术—航空宇航推进理论与工程]