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Volume 26 Issue 2
Jul.  2022
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QIAO Weiyang, Ulf Michel. A study on landing aircraft noise based on the fly-over measurements with a planar microphone array[J]. ACTA ACUSTICA, 2001, 26(2): 161-168. DOI: 10.15949/j.cnki.0371-0025.2001.02.013
Citation: QIAO Weiyang, Ulf Michel. A study on landing aircraft noise based on the fly-over measurements with a planar microphone array[J]. ACTA ACUSTICA, 2001, 26(2): 161-168. DOI: 10.15949/j.cnki.0371-0025.2001.02.013
shu

A study on landing aircraft noise based on the fly-over measurements with a planar microphone array

  • 1. Aero-engine Department of Northwestern Polytechnical University Xi'an 710072;

  • 2. Turbulence Research Department, German Aerospace Center (DLR) Benter 10623

More Information
  • PACS: 
    • 43.50  (Noise: its effects and control)
  • Received Date: November 03, 1999
  • Available Online: July 31, 2022
    Graphical Abstract
    • Abstract
  • 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 identitied. The spectra and directivity of any interested noise source can also be obtained by this measurement.
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