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Effects of number of blades on propeller noise

Kabilan Baskaran Orcid Logo, Nur Syafiqah Jamaluddin Orcid Logo, Alper Celik Orcid Logo, Djamel Rezgui Orcid Logo, Mahdi Azarpeyvand

Journal of Sound and Vibration, Volume: 572

Swansea University Author: Alper Celik Orcid Logo

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DOI (Published version): 10.1016/j.jsv.2023.118176

Abstract

This paper presents the effect of the number of blades on the aeroacoustic characteristics and aerodynamic performance of propellers utilized in urban air mobility vehicles through an extensive experimental study. A detailed parametric study is conducted for two, three, and five-bladed propellers. I...

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Published in: Journal of Sound and Vibration
ISSN: 0022-460X 1095-8568
Published: Elsevier BV 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa65054
first_indexed 2023-11-21T10:16:06Z
last_indexed 2024-11-25T14:15:16Z
id cronfa65054
recordtype SURis
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spelling 2024-04-16T15:59:10.1604490 v2 65054 2023-11-21 Effects of number of blades on propeller noise 3cb1f558a4b194101105e9c1e8d59cbf 0000-0002-2492-4625 Alper Celik Alper Celik true false 2023-11-21 ACEM This paper presents the effect of the number of blades on the aeroacoustic characteristics and aerodynamic performance of propellers utilized in urban air mobility vehicles through an extensive experimental study. A detailed parametric study is conducted for two, three, and five-bladed propellers. Investigations are carried out under static thrust conditions and incoming axial flow velocities for various rotational speeds. The spectra and directivity of the far-field noise are studied in detail for broadband and tonal components. Results show that two-bladed propellers produce higher tonal noise levels than other blade numbers for the same tip speed, while five-bladed propellers produce the highest broadband noise levels. The highest level of noise radiation is noted in the upstream and downstream directions for broadband noise, whereas tonal noise is radiated mainly in the plane of rotation. Results also indicate that high-frequency broadband humps are observed for higher advance ratios, likely caused by the formation of laminar separation bubbles, and that amplitude increases with blade numbers. The results of this study provide valuable insight for further investigations of propeller noise and aerodynamic performance. Journal Article Journal of Sound and Vibration 572 Elsevier BV 0022-460X 1095-8568 Propeller noise, Blade number, Urban air mobility, Solidity 3 3 2024 2024-03-03 10.1016/j.jsv.2023.118176 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University Horizon 2020 882842, EPSRC via Grant No. EP/S013024/1, Majlis Amanah Rakyat Malaysia 2024-04-16T15:59:10.1604490 2023-11-21T10:10:24.8123203 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering Kabilan Baskaran 0000-0003-2456-6933 1 Nur Syafiqah Jamaluddin 0000-0002-3677-3481 2 Alper Celik 0000-0002-2492-4625 3 Djamel Rezgui 0000-0002-9442-4335 4 Mahdi Azarpeyvand 5
title Effects of number of blades on propeller noise
spellingShingle Effects of number of blades on propeller noise
Alper Celik
title_short Effects of number of blades on propeller noise
title_full Effects of number of blades on propeller noise
title_fullStr Effects of number of blades on propeller noise
title_full_unstemmed Effects of number of blades on propeller noise
title_sort Effects of number of blades on propeller noise
author_id_str_mv 3cb1f558a4b194101105e9c1e8d59cbf
author_id_fullname_str_mv 3cb1f558a4b194101105e9c1e8d59cbf_***_Alper Celik
author Alper Celik
author2 Kabilan Baskaran
Nur Syafiqah Jamaluddin
Alper Celik
Djamel Rezgui
Mahdi Azarpeyvand
format Journal article
container_title Journal of Sound and Vibration
container_volume 572
publishDate 2024
institution Swansea University
issn 0022-460X
1095-8568
doi_str_mv 10.1016/j.jsv.2023.118176
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering
document_store_str 0
active_str 0
description This paper presents the effect of the number of blades on the aeroacoustic characteristics and aerodynamic performance of propellers utilized in urban air mobility vehicles through an extensive experimental study. A detailed parametric study is conducted for two, three, and five-bladed propellers. Investigations are carried out under static thrust conditions and incoming axial flow velocities for various rotational speeds. The spectra and directivity of the far-field noise are studied in detail for broadband and tonal components. Results show that two-bladed propellers produce higher tonal noise levels than other blade numbers for the same tip speed, while five-bladed propellers produce the highest broadband noise levels. The highest level of noise radiation is noted in the upstream and downstream directions for broadband noise, whereas tonal noise is radiated mainly in the plane of rotation. Results also indicate that high-frequency broadband humps are observed for higher advance ratios, likely caused by the formation of laminar separation bubbles, and that amplitude increases with blade numbers. The results of this study provide valuable insight for further investigations of propeller noise and aerodynamic performance.
published_date 2024-03-03T08:20:39Z
_version_ 1821302313991536640
score 11.512506

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