Open rotor broadband interaction noise
Open rotor broadband interaction noise
A theoretical model is presented for calculating the broadband noise produced by the interaction of an open rotor with the wake from either an upstream contra-rotating rotor or a stationary pylon. The model is used to investigate the dependence of the radiated noise on parameters such as pylon–rotor gap and the polar and azimuthal directivity of the noise field. A simple model is also presented which assumes that the unsteady loading on adjacent blades is uncorrelated. It is shown that the simple model can be used to calculate broadband interaction noise for most practical open rotor geometries.
3956-3970
Kingan, Michael J.
2d2daafa-d6d7-41aa-a9fc-2307259ac9f0
19 August 2013
Kingan, Michael J.
2d2daafa-d6d7-41aa-a9fc-2307259ac9f0
Kingan, Michael J.
(2013)
Open rotor broadband interaction noise.
[in special issue: Philip Doak Commemorative Issue]
Journal of Sound and Vibration, 332 (17), .
(doi:10.1016/j.jsv.2013.03.014).
Abstract
A theoretical model is presented for calculating the broadband noise produced by the interaction of an open rotor with the wake from either an upstream contra-rotating rotor or a stationary pylon. The model is used to investigate the dependence of the radiated noise on parameters such as pylon–rotor gap and the polar and azimuthal directivity of the noise field. A simple model is also presented which assumes that the unsteady loading on adjacent blades is uncorrelated. It is shown that the simple model can be used to calculate broadband interaction noise for most practical open rotor geometries.
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Published date: 19 August 2013
Organisations:
Acoustics Group
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Local EPrints ID: 354756
URI: http://eprints.soton.ac.uk/id/eprint/354756
ISSN: 0022-460X
PURE UUID: 527cd111-e2d6-4574-9acc-93650d0873b4
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Date deposited: 22 Jul 2013 12:33
Last modified: 14 Mar 2024 14:24
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Author:
Michael J. Kingan
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