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Experimental investigation of UAV rotor aeroacoustics and aerodynamics with computational cross‑validation

Kostek, Anna and Lößle, Felix and Wickersheim, Robin and Keßler, Manuel and Boisard, Ronan and Reboul, Gabriel and Visingardi, Antonio and Barbarino, Mattia and Gardner, Anthony (2023) Experimental investigation of UAV rotor aeroacoustics and aerodynamics with computational cross‑validation. CEAS Aeronautical Journal, 14 (3), pp. 1-16. Springer. doi: 10.1007/s13272-023-00680-z. ISSN 1869-5590.

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Official URL: https://link.springer.com/article/10.1007/s13272-023-00680-z#article-info

Abstract

The study provided a base of comparison of known computational techniques with different fidelity levels for performance and noise prediction of a single, fixed-pitch UAV rotor operating with varying flight parameters. The range of aerodynamic tools included blade element theory, potential flow methods (UPM, RAMSYS), lifting-line method (PUMA) and Navier–Stokes solver (FLOWer). Obtained loading distributions served as input for aeroacoustic codes delivering noise estimation for the blade passing frequency on a plane below the rotor. The resulting forces and noise levels showed satisfactory agreement with experimental data; however, differences in accuracy could be noticed depending on the computational method applied. The wake influence on the results was estimated based on vortex trajectories from simulations and those visible in background-oriented schlieren (BOS) pictures. The analysis of scattering effects showed that influence of ground and rotor platform on aeroacoustic results was observable even for low frequencies.

Item URL in elib:https://elib.dlr.de/197400/
Document Type:Article
Title:Experimental investigation of UAV rotor aeroacoustics and aerodynamics with computational cross‑validation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kostek, AnnaUNSPECIFIEDhttps://orcid.org/0009-0005-8582-6278146865669
Lößle, FelixUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wickersheim, RobinUniversität Stuttgart, IAGUNSPECIFIEDUNSPECIFIED
Keßler, ManuelUniversität Stuttgart, IAGUNSPECIFIEDUNSPECIFIED
Boisard, RonanONERA, The French Aerospace LabUNSPECIFIEDUNSPECIFIED
Reboul, GabrielUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Visingardi, AntonioCentro Italiano di Richerche Aerospaziali (CIRA), ItalyUNSPECIFIEDUNSPECIFIED
Barbarino, MattiaCentro Italiano di Richerche Aerospaziali (CIRA), ItalyUNSPECIFIEDUNSPECIFIED
Gardner, AnthonyUNSPECIFIEDhttps://orcid.org/0000-0002-1176-3447146865670
Date:19 September 2023
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:14
DOI:10.1007/s13272-023-00680-z
Page Range:pp. 1-16
Publisher:Springer
ISSN:1869-5590
Status:Published
Keywords:UAV, Rotor aerodynamics, Rotor aeroacoustics, Panel method, Blade element theory
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Rotorcraft and Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, GO
Deposited By: Koch, Bianca
Deposited On:17 Nov 2023 13:43
Last Modified:26 Mar 2024 13:21

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