| 前飞状态旋翼动稳定性及自由度间相互作用研究 |
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| 引用本文： | 薛海峰,向锦武,张晓谷.前飞状态旋翼动稳定性及自由度间相互作用研究[J].航空动力学报,2004,19(5):671-677. |
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| 作者姓名： | 薛海峰 向锦武 张晓谷 |
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| 作者单位： | 北京航空航天大学,航空科学与工程学院,北京,100083 |
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| 摘 要： | 为研究直升机在前飞状态下的稳定性,建立了前飞状态下旋翼的结构模型、气动力模型和平衡方程组。对方程组的周期系数处理以及前飞时的相关参数对旋翼动稳定性的影响等进行了研究。在前飞动稳定性分析中引入动力入流自由度。从分析各个自由度间的相互作用入手揭示旋翼动不稳定性的物理本质及影响因素。
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| 关 键 词： | 航空、航天推进系统 旋翼 动稳定性 自由度 |
| 文章编号： | 1000-8055(2004)05-0671-07 |
| 收稿时间： | 2003/10/22 0:00:00 |
| 修稿时间： | 2003年10月22 |
Investigation of Rotor Dynamic Stability and Mutual Excitation of Different Degrees of Freedoms in Forward Flight |
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| XUE Hai-feng,XIANG Jin-wu and ZHANG Xiao-gu.Investigation of Rotor Dynamic Stability and Mutual Excitation of Different Degrees of Freedoms in Forward Flight[J].Journal of Aerospace Power,2004,19(5):671-677. |
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| Authors: | XUE Hai-feng XIANG Jin-wu and ZHANG Xiao-gu |
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| Institution: | School of Aeronautic Science and Technology,Beijing University of Aeronautics and Astronautics,Beijing100083,China;School of Aeronautic Science and Technology,Beijing University of Aeronautics and Astronautics,Beijing100083,China;School of Aeronautic Science and Technology,Beijing University of Aeronautics and Astronautics,Beijing100083,China |
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| Abstract: | It is more difficult to investigate the helicopter dynamic stability in forward flight than in hover.The rotor structure model,aerodynamic model and equations of motion were established.The treatment of equations with periodic coefficients and the influence of related parameters on rotor dynamic stability were investigated.The degree of freedom of the dynamic inflow was introduced into the dynamic stability analysis in forward flight.Starting with the analysis of mutual excitation of different degrees of freedom,the physical nature and influence factors on rotor dynamic instability are revealed. |
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| Keywords: | aerospace propulsion system rotor dynamic stability degrees of freedom |
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