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首页> 外文期刊>Journal of the American Helicopter Society >Effect of Three-Dimensional Aerodynamics and Dynamic Stall on Lead-Lag Damping of an Isolated Rotor
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Effect of Three-Dimensional Aerodynamics and Dynamic Stall on Lead-Lag Damping of an Isolated Rotor

机译：三维空气动力学和动态摊位对孤立转子铅滞滞阻尼的影响

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摘要

This paper investigates three-dimensional aerodynamic effects due to radial flow on lead-lag damping of a rotor in forward flight conditions. Three-dimensional effects in this study are restricted to yawed flow aerodynamics and radial flow coupling between blade segments. These effects are included in the ONERA dynamic stall model, and lead-lag damping for an isolated torsionally stiff rotor is calculated for different forward flight conditions. This augmented aerodynamic model with three-dimensional effects and Peters-He dynamic wake model improves the correlation of lead-lag damping with experimental data at high advance ratios. The effect of modeling static lift characteristics on damping correlation is also presented. Finally, a modification to the trailing edge separation point-based static lift model for improved yawed flow modeling amenable to aeromechanical stability analysis is proposed.
机译：本文研究了在前进飞行条件下转子的铅滞滞阻尼的径向流动引起的三维空气动力学效应。本研究中的三维效应仅限于叶片段之间的偏航流动空气动力学和径向流动耦合。这些效果包括在OnaIn动态失速模型中，并且计算用于隔离的扭转转子的引线阻尼，用于不同的前向飞行条件。这种增强的空气动力学模型具有三维效应和彼得斯 - 他动态唤醒模型提高了高级比率的实验数据的引导滞后阻尼的相关性。还提出了建模静电提升特性对阻尼相关性的影响。最后，提出了一种改进基于缘分离点的静力提升模型，用于改进的偏移流动建模符合机能稳定性分析。

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