Aeroacoustic Interactions of a Trailing Edge Mounted Propeller and Flat Plate

Liam Hanson, Kabilan Baskaran, Bin Zang, Mahdi Azarpeyvand

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

12 Citations (Scopus)
180 Downloads (Pure)

Abstract

A set of experiments were carried out within an aeroacoustic wind tunnel facility to investigate parametrically the acoustic interactions of a propeller positioned above two flat plates of varying dimensions. A propeller was tested at a constant rotational rate of 7000 RPM in static conditions in three test configurations; an isolated propeller, a propeller interacting with a semi-infinite flat plate and a propeller interacting with a finite flat plate. The aerodynamic loading and far-field noise data were collected. The changes in magnitude and directivity of the overall sound pressure level as well as the first blade passing frequency tone were explored comprehensively for the different cases. The spectral content of selected cases of interest were examined in greater detail showing the impacts of acoustic scattering, diffraction, reflection and shielding when both flat plates are introduced. The results show that locations exist at which there is significant potential for noise attenuation in both the tonal and broadband noise content. Reductions of up to 11.6 dB in the overall sound pressure level and 19.9 dB in the first blade passing frequency were discovered.
Original languageEnglish
Title of host publication28th AIAA/CEAS Aeroacoustics Conference, 2022
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages16
ISBN (Electronic)9781624106644
ISBN (Print)9781624106644
DOIs
Publication statusPublished - 17 Jun 2022
Event28th AIAA/CEAS Aeroacoustics 2022 Conference - United Kingdom, Southampton, United Kingdom
Duration: 14 Jun 202217 Jun 2022
https://doi.org/10.2514/6.2022-3095

Publication series

NameAIAA/CEAS Aeroacoustics Conference
PublisherAIAA
ISSN (Print)1946-7826

Conference

Conference28th AIAA/CEAS Aeroacoustics 2022 Conference
Country/TerritoryUnited Kingdom
CitySouthampton
Period14/06/2217/06/22
Internet address

Bibliographical note

Funding Information:
The first author would like to acknowledge the financial support of Embraer S.A and the EPSRC (Engineering and Physical Sciences Research Council). The authors would like to acknowledge Horizon 2020 research and innovation programme under grant agreement number 882842 (SilentProp project). The authors also thank Nur Syafiqah Jamaluddin who designed and built the propeller test rig.

Publisher Copyright:
© 2022, American Institute of Aeronautics and Astronautics Inc, AIAA., All rights reserved.

Keywords

  • Propeller Noise
  • Shielding
  • Aeroacoustics
  • Acoustic Scattering
  • Noise Attenuation
  • Acoustic Interaction
  • Flat Plate

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