增升装置多段翼型气动声学风洞实验研究
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李玲,女,博士,副教授。主要研究方向:航空气动声学风洞实验研究,飞机机体部件气动噪声机理及降噪技术研究,小波变换分析气动噪声信号的时频特性,增升装置柔性变弯气动噪声控制技术研究等领域。E-mail:lilingase@buaa.edu.cn

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V211.4

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Experimental investigation of high-lift device multi-element configu-ration in aeroacoustic wind tunnel
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    摘要:

    随着航空运输业的蓬勃发展,飞机的噪声污染受到越来越多的关注。在大型飞机起降阶段,增升装置作为主要的机体部件,其辐射出的噪声量级已经占据飞机总体噪声的很大一部分,是未来飞机能否进一步降低噪声达到适航标准的关键性因素。针对增升装置多段翼型30P30N的气动噪声问题进行实验研究,实验在北航D5气动声学风洞中开展,使用Kevlar布和穿孔板对实验段进行了气动声学改造,以满足透声不透气的气动声学实验要求。通过远场传声器和麦克风阵列测量得到30P30N模型的远场气动噪声特性和定位主要声源位置,引进小波变换的信号分析方法得到噪声的时频特性,全面揭示多段翼型的气动噪声产生机理。

    Abstract:

    With the increasing development of aircraft transport, people have paid more and more attention to the noise generated from aircraft. In the take-off and landing stage of large aircraft, the high-lift device as the main airframe component radiates much noise which is a major part of the aircraft total noise, and the high-lift device noise is the key factor whether the aircraft can further reduce the noise and meet the airworthiness requirement in the future. This paper makes an experimental investigation on the aerodynamic noise of the multi-section airfoil 30P30N of the high-lift device. The aeroacoustic experiment is conducted in Beihang University D5 aeroacoustic wind tunnel, the closed test section of which is composed of Kevlar cloth and perforated plate for the aerodynamically closed and acoustically open condition. The far-field noise characteristics and the noise source location are respectively measured by the microphone and the microphone array, and the wavelet transform method is introduced to analyze the aeroacoustic time-frequency characteristics for completely revealing the aeroacoustic mechanism of the multi-element configuration.

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李玲,刘沛清.增升装置多段翼型气动声学风洞实验研究[J].民用飞机设计与研 究,2022(1):90-94LI Ling, LIU Peiqing. Experimental investigation of high-lift device multi-element configu-ration in aeroacoustic wind tunnel[J]. Civil Aircraft Design and Research,2022,(1):90-94. ( in Chinese)

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  • 在线发布日期: 2022-04-17
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