| Issue |
Acta Acust.
Volume 6, 2022
Topical Issue - Aeroacoustics: state of art and future trends
|
|
|---|---|---|
| Article Number | 27 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/aacus/2022022 | |
| Published online | 04 July 2022 | |
Scientific Article
Shielding of rotor noise by plates and wings
Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, United Kingdom
* Corresponding author: m.j.carley@bath.ac.uk
Received:
28
February
2022
Accepted:
8
June
2022
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.
Key words: Noise shielding / Rotor noise / Trailing edge / Scattering
© The Author(s), Published by EDP Sciences, 2022
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