Numerical aeroacoustic analysis of propeller designs

Chirico, G., Barakos, G. N. and Bown, N. (2018) Numerical aeroacoustic analysis of propeller designs. Aeronautical Journal, 122(1248), pp. 283-315. (doi:10.1017/aer.2017.123)

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Abstract

As propeller-driven aircraft are the best choice for short/middle-haul flights but their acoustic emissions may require improvements to comply with future noise certification standards, this work aims to numerically evaluate the acoustics of different modern propeller designs. Overall sound pressure level and noise spectra of various blade geometries and hub configurations are compared on a surface representing the exterior fuselage of a typical large turboprop aircraft. Interior cabin noise is also evaluated using the transfer function of a Fokker 50 aircraft. A blade design operating at lower RPM and with the span-wise loading moved inboard is shown to be significantly quieter without severe performance penalties. The employed Computational Fluid Dynamics (CFD) method is able to reproduce the tonal content of all blades and its dependence on hub and blade design features.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barakos, Professor George and Chirico, Giulia
Authors: Chirico, G., Barakos, G. N., and Bown, N.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:Aeronautical Journal
Publisher:Cambridge University Press
ISSN:0001-9240
ISSN (Online):2059-6464
Published Online:29 November 2017
Copyright Holders:Copyright © 2017 Royal Aeronautical Society
First Published:First published in Aeronautical Journal 122(1248):283-315
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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