| 直升机机体－主减－旋翼耦合系统动稳定性分析 |
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| 引用本文： | 马扣根,顾仲权.直升机机体－主减－旋翼耦合系统动稳定性分析[J].南京航空航天大学学报,1995(6). |
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| 作者姓名： | 马扣根 顾仲权 |
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| 作者单位： | 南京航空航天大学飞行器系 |
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| 摘 要： | 对单桨常尾桨铰接式直升机机体－主减－族翼耦合系统动稳定性进行了分析研究。在建立的数学模型中,除了考虑机体沿侧向和纵向的平动,机身的横滚、俯仰和偏航,旋翼的挥舞和摆振外,还特别考虑了机身的横向运动及主减的摆动和传动特性。以某型直升机为基础的研究表明：挥舞对耦合系统的动稳定性有一定影响;不考虑挥舞和主减支承特性时,对耦合系统动稳定性的分析偏于保守;在合适的主减支承条件下,主减对耦合系统的动稳定性影响不大;旋翼的挥舞与主减的摆动是耦合的,这使主减的固有频率提高。
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| 关 键 词： | 直升机 动稳定性 自激振动 地面共振 |
On Stability of Fuselage-Main Transmission -Rotor Coupling System |
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| Ma Kougen,Gu Zhangquan.On Stability of Fuselage-Main Transmission -Rotor Coupling System[J].Journal of Nanjing University of Aeronautics & Astronautics,1995(6). |
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| Authors: | Ma Kougen Gu Zhangquan |
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| Abstract: | The paper studies the stability of fuselage-main transmission-rotor coupling system.In the mathematical model, the supporting and driving characteristics of main transmission are considered, besides the translations and rotations of the fuselase with respect to transversal, lateral and longitudinal axes, the lead-lagging and flapping of rotor blades. The example shows some useful results. Fisrtly, the lead-lagging of bindes have some effects on the stability of coupling system, the results obtained by neglecting the dynamics of "lain transmission and the lead-lagging of blades are conservative. Secondly, the main transmission with suitable support has a little effect on the stability of coupling system. Lastly, the lead-lagging of blades couples with the motions of main transmission, that makes the natural frequencies of main transmission Increase. |
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| Keywords: | helicopters dynamic stabilities self-excited vibration ground resonance |
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