空气动力学学报Issue(4)：523-529,7.DOI:10.7638/kqdlxxb-2013.0112
基于相控麦克风阵列的民机主起落架气动噪声源识别技术研究
Aerodynamic noise source detection for main landing gear based on phased microphone array technique
徐康乐 1陈迎春 1江渊 1周家检 2孙刚3
作者信息
- 1. 中国商飞上海飞机设计研究院，上海 201210
- 2. 中国航天空气动力技术研究院，北京 100074
- 3. 复旦大学，上海 200433
- 折叠
摘要
Abstract
Landing gear noise is one of the most important parts of the aircraft’s airframe noise.Due to the geometry complexity of the landing gear devices,as well as the interference effects on the flows surrounding the parts of the landing gear,the noise mechanism of the landing gear is extremely complicated.Currently,the phased microphone array is one of the most popu-lar methods to detect the location of the acoustic source of the airframe noise.After acquiring the noise source data in a closed wind tunnel,the Beamforming are adopted to localize the exact noise source locations at different frequencies.In order to avoid the cover effect of side-lobes of the maximum noise source location,CLEAN-PSF algorithm is employed to cut out the noise source location at the main door.关键词
主起落架/气动噪声/Beamforming/CLEAN-PSFKey words
main landing gear/aerodynamic noise/Beamforming/CLEAN-PSF分类
航空航天引用本文复制引用
徐康乐,陈迎春,江渊,周家检,孙刚..基于相控麦克风阵列的民机主起落架气动噪声源识别技术研究[J].空气动力学学报,2015,(4):523-529,7.
