| 纵列式双旋翼悬停状态气动干扰特性参数影响分析 |
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| 引用本文： | 黄水林,招启军,徐国华.纵列式双旋翼悬停状态气动干扰特性参数影响分析[J].空气动力学学报,2011,29(2). |
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| 作者姓名： | 黄水林 招启军 徐国华 |
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| 作者单位： | 1. 中国直升机设计研究所直升机旋翼动力学重点实验室,江西景德镇,333001
2. 中国直升机设计研究所直升机旋翼动力学重点实验室,江西景德镇,333001;南京航空航天大学直升机旋翼动力学级重点实验室,江苏南京,210016 |
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| 摘 要： | 建立了一个纵列式直升机双旋翼气动干扰特性分析的自由尾迹迭代方法。在该方法中,考虑了双旋翼以及旋翼与尾迹之间的相互干扰影响,将旋翼尾迹模型、桨叶气动力模型以及旋翼配平模型进行耦合求解。同时给出了一个适合于双旋翼干扰计算特点的配平方法。计算了悬停时干扰状态下的双旋翼诱导速度分布以及旋翼性能,并与试验数据进行对比,验证了方法的有效性。应用上述方法,对比分析了纵列式双旋翼与单旋翼的性能,结果表明:悬停时纵列式前、后旋翼的性能都比单旋翼时的要差。文中进一步系统地分析了悬停状态双旋翼纵向间距和轴向间距对气动干扰特性的影响,结果显示:当纵向间距为1.3R时,纵列式双旋翼相比两单独旋翼需要额外的附加功率为8.5%,且随纵向间距的增大,附加功率减小并出现负值,当纵向间距为1.85R时,附加功率最小。
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| 关 键 词： | 旋翼 直升机 悬停 纵列式 气动特性 自由尾迹 |
Parametric effect investigations on aerodynamic interaction characteristics for tandem rotors in hover |
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| HUANG Shui-lin,ZHAO Qi-jun,XU Guo-hua.Parametric effect investigations on aerodynamic interaction characteristics for tandem rotors in hover[J].Acta Aerodynamica Sinica,2011,29(2). |
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| Authors: | HUANG Shui-lin ZHAO Qi-jun XU Guo-hua |
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| Institution: | HUANG Shui-lin1,ZHAO Qi-jun1,2,XU Guo-hua1,2(1.Science and Technology on Rotorcraft Aeromechanics Laboratory,CHRDL,Jingdezhen 333001,China,2.Science and Technology on Rotorcraft Aeromechanics Laboratory,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | An iterative free-wake computational method has been developed for the prediction of aerodynamic interaction characteristics between the twin rotors of a tandem helicopter.In this method,the mutual interaction effects among the rotor and wake as well as the wake and wake are included,and a rotor wake model,blade aerodynamic model and rotor trim model are coupled to solve the aerodynamic force and momentum of twin rotors.A new dual-rotor trim method has been given so as to be suitable for the aerodynamic int... |
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| Keywords: | rotor helicopters hover tandem aerodynamic characteristics free wake |
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