| 前飞状态下旋翼桨叶气动弹性稳定性分析 |
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| 引用本文： | 余林,张呈林.前飞状态下旋翼桨叶气动弹性稳定性分析[J].南京航空航天大学学报,1996,28(3):315-322. |
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| 作者姓名： | 余林 张呈林 |
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| 作者单位： | 中国直升机设计研究所景德镇(余林)，南京航空航天大学飞行器系(张呈林) |
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| 摘 要： | 研究了直升机旋翼桨叶片前飞状态下的挥舞－摆振－扭转全耦合运动的气动弹性稳定性。利用牛顿法推导出带周期系数的线性偏微分方程；用Ｇａｌｅｒｋｉｎ有限元素法离散该方程的空间变量；运用基于Ｆｌｏｑｕｅｔ理论的Ｈｓｕ近法及坐标变换－常系数近似法处理周期系数。
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| 关 键 词： | 旋翼 挥舞 摆振 扭转 气弹稳定性 |
Analysis of Aeroelastic Stability of Rotor Blades in Forward Flight |
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| Yu,Lin.Analysis of Aeroelastic Stability of Rotor Blades in Forward Flight[J].Journal of Nanjing University of Aeronautics & Astronautics,1996,28(3):315-322. |
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| Authors: | Yu Lin |
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| Abstract: | The aeroelastic stability of coupled flap lag torsion motion of rotor blades in forword flight is studied.Unsteady aerodynamic loads are considered and the effects of reversed flow are included.The coupled linear partial differential equations with periodic coefficients are derived using the Newton method.The spetial dependence of the partial differential equations is discrilized using the Galerkin finite element method and the periodic coefficients in the equations is treated by applying Hsu approximation.Finally the aeroelastic stability is determined by the eiqenvalue analysis. |
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| Keywords: | rotors finite elements forward filght state coupled flap lag torsion periodic coefficients aeroelastic stability |
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