| 利用三维激光测速方法研究悬停状态下的桨尖涡 |
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| 引用本文： | 李峰,康浩,高正.利用三维激光测速方法研究悬停状态下的桨尖涡[J].南京航空航天大学学报(英文版),1996(2). |
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| 作者姓名： | 李峰 康浩 高正 |
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| 作者单位： | 南京航空航天大学旋翼动力学实验室 |
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| 摘 要： | 利用三维多谱勒激光测速仪，对悬停状态下模型旋翼桨叶附近的流场进行了实验测量。研究了悬停状态下桨盘附近的流场特征、旋翼桨尖涡的形成和发展，以及桨尖涡对后续桨叶的影响
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| 关 键 词： | 旋翼 流场 桨尖 三维多谱勒激光测速仪 测量 |
3D LDV MEASUREMENTS OF ROTOR BLADE TIP VORTEX IN HOVER |
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| Li Feng Kang Hao Gao Zheng Aeromechanics Lab of Rotorcraft,NUAA Yudao Street,Nanjing ,P. R. China.3D LDV MEASUREMENTS OF ROTOR BLADE TIP VORTEX IN HOVER[J].Transactions of Nanjing University of Aeronautics & Astronautics,1996(2). |
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| Authors: | Li Feng Kang Hao Gao Zheng Aeromechanics Lab of Rotorcraft NUAA Yudao Street Nanjing P R China |
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| Institution: | Li Feng Kang Hao Gao Zheng Aeromechanics Lab of Rotorcraft,NUAA29 Yudao Street,Nanjing 210016,P. R. China |
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| Abstract: | An investigation made on the rotor blade tip vortex through use of a Three Dimensional Laser Doppler Velocimetry(3D LDV) is described. The experiment is conducted with a 2 m in diameter model helicopter rotor. By a series of measurements near blade tip, the velocity field near blade tip is documented, and through which, the tip vortex rollup and development are presented. The radial distribution of instantaneous velocities at various levels above and under the rotor disc is also measured in this investigation. Using this distribution, the influence of the tip vortex from the preceding blade on the follow up blade is discussed. |
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| Keywords: | rotors flow fields blade tip 3D LDV measurement |
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