Influence of Torque Ratio on Counter-Rotating Open-Rotor Interaction Noise
Influence of Torque Ratio on Counter-Rotating Open-Rotor Interaction Noise
复制标题
扭矩比对反向旋转开式转子相互作用噪声的影响
DOI：
10.2514/1.j053797
复制
发表时间：
2014
期刊：
影响因子：
2.5
通讯作者：
F. Falissard
中科院分区：
文献类型：
--
作者：
G. Delattre;F. Falissard
本文研究了在总推力不变的情况下，转矩比对推力对开转子相互作用噪声的影响。结果表明，转矩比对开式旋翼气动性能影响较小，但对起飞时的相互作用噪声影响较大。详细研究了噪声源的机理，并将其与前旋翼叶顶涡的特性联系起来。详细介绍了叶尖涡的特性，并与解析涡模型进行了比较。验证了转矩比变化对开式旋翼巡航时气动性能的影响不大。
This paper investigates the influence of the torque ratio, at constant total thrust, on the interaction noise of a generic counter-rotating open rotor in pusher configuration. It is shown that torque ratio has a small influence on the open-rotor aerodynamic performance but a strong impact on interaction noise at takeoff condition. The noise source mechanisms are investigated in detail and linked with the characteristics of the front rotor blade-tip vortices. Tip vortex characteristics are detailed and compared with analytical vortex models. It is verified that torque ratio variation has no strong impact on the open-rotor aerodynamic performance at cruise condition.