Shielding of rotor noise by plates and wings

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Abstract

A method of noise reduction proposed for the next generation of aircraft is to shield noise from the propulsion system, by positioning the noise source over a wing or another surface. In this
paper, an approximate analysis is developed for the acoustic field
far from a circular source placed near the edge of a semi-infinite
plate, a model problem for shielding of noise by a wing and for
scattering by a trailing edge. The approximation is developed for a
source of small radius and is found to be accurate when compared to full numerical evaluation of the field.
Original languageEnglish
Article number27
Pages (from-to)14-27
Number of pages14
JournalActa Acustica United with Acustica
Volume6
Early online date4 Jul 2022
DOIs
Publication statusPublished - 31 Dec 2022

Keywords

  • Noise shielding
  • Rotor noise
  • Scattering
  • Trailing edge

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Computer Science Applications
  • Speech and Hearing
  • Electrical and Electronic Engineering

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