基于改进的传声器阵列数据分析技术的飞机机体噪声实验研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2008, Vol. 29 ›› Issue (3): 527-533.

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Experimental Study of Airframe Noise with Improved Data Reduction Method of Microphone Array Measurements

Qiao Weiyang¹,Ulf Michel²

1.School of Engine and Energy, Northwestern Polytechnical University 2.Engine Acoustics Department, German Aerospace Center (DLR)

Received:2007-05-29 Revised:2007-11-18 Online:2008-05-20 Published:2008-05-20
Contact:
Qiao Weiyang¹

Abstract

Abstract:

An improved data reduction method, called as the Clean Algorithm, for the measurement of aircraft flying noise with the large planar microphone array is developed. In the Clean Algorithm, the simulation of response of a point source at the position of maximum sound emission in source map is firstly carried out. Then, this response is subtracted from the source distribution to reduce the aliases and side lobes.

Key words: airframe noise, microphone array, noise measurement, aircraft noise, aeroacoustics

Qiao Weiyang;Ulf Michel. Experimental Study of Airframe Noise with Improved Data Reduction Method of Microphone Array Measurements[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2008, 29(3): 527-533.

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Experimental Study of Airframe Noise with Improved Data Reduction Method of Microphone Array Measurements

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