| 基于干扰距离控制的直升机桨-涡干扰噪声降噪方法 |
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| 引用本文： | 张威,王菲,招启军. 基于干扰距离控制的直升机桨-涡干扰噪声降噪方法[J]. 航空动力学报, 2021, 36(7): 1417-1425. DOI: 10.13224/j.cnki.jasp.20200433 |
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| 作者姓名： | 张威 王菲 招启军 |
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| 作者单位： | 南京航空航天大学直升机旋翼动力学国家重点实验室,南京210016;中国航空工业集团有限公司中国直升机设计研究所,江西景德镇333001;中国航空工业集团有限公司中国直升机设计研究所,江西景德镇333001;南京航空航天大学直升机旋翼动力学国家重点实验室,南京210016 |
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| 基金项目： | 国家自然科学基金重点项目（12032012）；江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 提出了一种适用于直升机旋翼桨-涡干扰距离计算的方法.针对桨-涡干扰距离计算中必需的旋翼桨盘入流及桨盘倾角,又分别建立了旋翼耦合N-S(Navier-Stokes)/自由尾迹模型和桨盘配平模型进行求解,其特点是兼顾计算精度和计算效率;并从悬停、前飞两方面验证了方法的有效性.应用所建立的桨-涡干扰距离计算方法,着重分析了直...
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| 关 键 词： | 直升机 旋翼 桨-涡干扰距离 桨-涡干扰(BVI)噪声 纵向平面力 |
| 收稿时间： | 2020-10-18 |
Method on helicopter BVI noise reduction based onmiss-distance control |
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| ZHANG Wei,WANG Fei,ZHAO Qijun. Method on helicopter BVI noise reduction based onmiss-distance control[J]. Journal of Aerospace Power, 2021, 36(7): 1417-1425. DOI: 10.13224/j.cnki.jasp.20200433 |
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| Authors: | ZHANG Wei WANG Fei ZHAO Qijun |
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| Affiliation: | 1. National Laboratory of Science and Technology on Rotorcraft Aeromechanics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. China Helicopter Research and Development Institute, Aviation Industry Corporation of China, Limited, Jingdezhen Jiangxi 333001, China |
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| Abstract: | A method for calculating the miss-distance of helicopter rotor was proposed. For the calculation of miss-distance, rotor inflow and tip-path-plane angle were required firstly. The rotor coupled N-S(Navier-Stokes )/free-wake model and rotor trim model of high accuracy and high efficiency were developed respectively. The method was validated using several numerical examples in both hover and forward flight. Applying the developed method, the effect mechanism of longitudinal forces and flight parameters on miss-distance was analyzed. Further, the ground noise radiated from the helicopter rotor was calculated. It demonstrated that the maximum ground noise was reduced by 4dB through the longitudinal forces and acceleration. At the same time, the relationship between miss-distance and flight parameters was studied and some instructive conclusions for low-noise flight were obtained. |
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| Keywords: | helicopter rotor miss-distance blade-vortex interaction(BVI) noise longitudinal forces |
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