... 阻尼板spoiling flap 风轮空气动力特性aerodynamic characteristics of rotor 叶尖速度比（高速性系数）tip-speed ratio ...
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The shroud at high speed is modeled as an elliptic wing in order to construct a momentum theory method to investigate the aerodynamic characteristics of ducted tail rotor in hover and forward flight.
引入尾流收缩比因子，并将大速度时的涵道等效为圆形机翼，建立了一个适合于直升机悬停和前飞状态涵道尾桨气动特性分析的动量理论方法。
A free wake analytical model is then developed for predicting the aerodynamic characteristics of a scissors tail rotor and validated by numerical examples.
然后，建立了一个剪刀式尾桨气动特性计算的分析模型，并进行了验证。
An experimental and analytical investigation on the aerodynamic characteristics of a helicopter scissors tail rotor has been made.
对剪刀式尾桨的气动特性进行了实验和分析研究。
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