Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/29658
Title: Noise decomposition of dual synchronized propellers in hover
Authors: Bhardwaj, M
Chong, TP
Paruchuri, C
Joseph, P
Keywords: counter rotating propellers;overall sound pressure level;unsteady flows;aerodynamic interference;power spectral density;microphone array;anechoic chambers;propeller noise;tachometer;electric vertical take off and landing
Issue Date: 30-May-2024
Publisher: American Institute of Aeronautics and Astronautics, Inc.
Citation: Bhardwaj, M. et al. (2024) 'Noise decomposition of dual synchronized propellers in hover', 30th AIAA/CEAS Aeroacoustics Conference, 2024, Rome, Italy, 4-7 June, AIAA 2024-3045, pp. 1 - 11. doi: 10.2514/6.2024-3045.
Abstract: This experimental study investigates the acoustic characteristics of dual propellers in the side-by-side configuration, and addresses the impact of blade tip-to-tip separation distances and relative blade-to-blade phase angles on the tonal noise generation with a specially designed propeller rig. The parametric study of co-rotating and counter-rotating configurations is performed to emphasize the effect and importance of phase synchronization in producing the tonal components, such as the first Blade Pass Frequency (BPF). The linearity of acoustic interference for the side-by-side propellers is investigated through the principle of superimposition. A unique noise decomposition algorithm for various rotation angles is developed to understand the directional behavior of the synchronized propellers. The responses of the first BPF noise radiation as a function of the rotation angle under different combinations of rotating direction and blade-to-blade phase angle have been established.
Description: Paper no. AIAA 2024-3045, Session: Propeller‚ Rotorcraft and V/STOL Noise III
URI: https://bura.brunel.ac.uk/handle/2438/29658
DOI: https://doi.org/10.2514/6.2024-3045
ISBN: 978-1-62410-720-7
Other Identifiers: ORCiD: Tze Pei Chong https://orcid.org/0000-0002-5272-3943
AIAA 2024-3045
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers

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FullText.pdfThis is the accepted manuscript version of a conference paper which has been published in final form on 30 May 2024 in the AIAA Electronic Library at https://doi.org/10.2514/6.2024-3045, Copyright © 2024 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved. Author accepted manuscript self-archived with permission of the AIAA per https://www.aiaa.org/publications/Open-Access. All requests for copying and permission to reprint should be submitted to CCC at https://www.copyright.com; employ the ISBN 978-1-62410-704-7 to initiate your request. See also AIAA Rights and Permissions https://www.aiaa.org/randp.1.6 MBAdobe PDFView/Open


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