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Landing noise of aircraft based on the fly-over measurements with a planar microphone array 被引量:3
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作者 QIAO Weiyang (Aero-engine Department of Northwestern Polytechnical University Xi’an 710072) Ulf Michel (Turbulence Research Department, German Aerospace Center (DLR) Berlin 10623) 《Chinese Journal of Acoustics》 2002年第1期9-22,共14页
A large planar microphone array, which consists of 111 microphones, was successfully developed. The positions of 111 microphones in the array were determined by a random optimization procedure for the largest possible... A large planar microphone array, which consists of 111 microphones, was successfully developed. The positions of 111 microphones in the array were determined by a random optimization procedure for the largest possible amplification and dynamic range. The beam pattern of planar array was obtained by numerical calculation. This planar array was applied to measure a two-dimensional mapping of the sound sources on landing aircraft. It is shown that important airframe noise sources can be identified. The spectra and directivity of any interested noise source can also be obtained by this measurement. 展开更多
关键词 Landing noise of aircraft based on the fly-over measurements with a planar microphone array OVER
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