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Investigation of Small-Scale Rotor Aeroacoustic in DLR's Acoustic Wind Tunnel Braunschweig

Rossignol, Karl-Stephane and Yin, Jianping and Rottmann, Lukas (2022) Investigation of Small-Scale Rotor Aeroacoustic in DLR's Acoustic Wind Tunnel Braunschweig. In: 28th AIAA/CEAS Aeroacoustics Conference, 2022, pp. 1-16. 28th AIAA/CEAS Aeroacoustics Conference, 14-17 June 2022, Southampton, UK. doi: 10.2514/6.2022-2838. ISBN 978-162410664-4.

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Official URL: https://arc.aiaa.org/doi/abs/10.2514/6.2022-2838

Abstract

This paper presents a multi-rotor test rig designed for the investigation of the aerodynamics and acoustics of small-scale propellers, relevant for urban air mobility vehicles applications. The test rig allows testing of isolated rotors, rotors in coaxial configurations and rotors in tandem configurations in various parametric combinations. Selected results are presented to emphasize the impact of aerodynamic and acoustic interaction effects on the characteristics of the acoustic emissions from multi-rotor configurations. The results indicate that amplification of harmonics and sub-harmonics noise components in the mid- to high-frequency range as well an increased broadband noise component are to be expected for such configurations. The work presented herein constitutes a first effort to experimentally investigate small-scale rotors to provide a database for the validation of numerical simulation schemes.

Item URL in elib:https://elib.dlr.de/189389/
Document Type:Conference or Workshop Item (Speech)
Title:Investigation of Small-Scale Rotor Aeroacoustic in DLR's Acoustic Wind Tunnel Braunschweig
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Rossignol, Karl-StephaneUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yin, JianpingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rottmann, LukasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:June 2022
Journal or Publication Title:28th AIAA/CEAS Aeroacoustics Conference, 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI:10.2514/6.2022-2838
Page Range:pp. 1-16
Editors:
EditorsEmailEditor's ORCID iDORCID Put Code
UNSPECIFIEDAmerican Institute of Aeronautics and Astronautics, Inc.UNSPECIFIEDUNSPECIFIED
ISBN:978-162410664-4
Status:Published
Keywords:Rotor acoustics, wind tunnel measurement, drone acoustics, multi-copter acoustics
Event Title:28th AIAA/CEAS Aeroacoustics Conference
Event Location:Southampton, UK
Event Type:international Conference
Event Dates:14-17 June 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Unmanned Aerial Systems
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Rossignol, Karl-Stephane
Deposited On:02 Nov 2022 10:27
Last Modified:02 Nov 2022 10:27

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