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EVALUATION OF ACOUSTIC SHIELDING EFFECTS FROM A GENERIC GARTEUR HELICOPTER CONFIGURATION

Yin, Jianping and Rossignol, Karl-Stephane and Reboul, Gabriel and Mortain, Frederic and Vigevano, Luigi and Zanotti, Alex and Gibertini, Giuseppe and Barbarino, Mattia and Testa, Claudio and Bernardini, Giovanni and Brouwer, Harry (2021) EVALUATION OF ACOUSTIC SHIELDING EFFECTS FROM A GENERIC GARTEUR HELICOPTER CONFIGURATION. 47 European Rotorcraft Forum (ERF) 2021, 07.-09. Sep.2021, virtual.

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Abstract

This paper presents the activities in the GARTEUR Action Group HC/AG-24 to study the noise scattering of helicopter rotors in the presence of the fuselage. The focus of the Action Group is on the development and the validation of numerical prediction methods and on establishing an experimental data base for numerical validations. This paper will focus on the results from the wind tunnel and the numerical activities achieved in the last stage of the project. Shielding experiments were conducted in DLR Acoustic Wind tunnel in Braunschweig (AWB) using point and rotor noise sources. The numerical methods used in the group include Boundary Element Method (BEM) for solving the Helmholtz equation and Computational AeroAcoustic method (CAA) for solving the linearized Euler equations. The acoustic scattering predictions are compared to test data.

Item URL in elib:https://elib.dlr.de/144784/
Document Type:Conference or Workshop Item (Speech)
Title:EVALUATION OF ACOUSTIC SHIELDING EFFECTS FROM A GENERIC GARTEUR HELICOPTER CONFIGURATION
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Yin, JianpingJianping.Yin (at) dlr.deUNSPECIFIED
Rossignol, Karl-StephaneKarl-Stephane.Rossignol (at) dlr.deUNSPECIFIED
Reboul, Gabrielgabriel.reboul (at) onera.frUNSPECIFIED
Mortain, FredericUNSPECIFIEDUNSPECIFIED
Vigevano, LuigiPolitecnico di MilanoUNSPECIFIED
Zanotti, AlexDipartimento di Scienze e Tecnologie Aerospaziali, Politecnico di MilanoUNSPECIFIED
Gibertini, GiuseppePolitecnico di Milano - Dipartimento di Ingegneria Aerospaziale, Via La Masa 34, 20156 Milano, ItalyUNSPECIFIED
Barbarino, Mattiam.barbarino (at) cira.itUNSPECIFIED
Testa, Claudioclaudio.testa (at) cnr.itUNSPECIFIED
Bernardini, Giovannig.bernardini (at) uniroma3.itUNSPECIFIED
Brouwer, HarryHarry.Brouwer (at) nlr.nlUNSPECIFIED
Date:September 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Helicopter Acoustics, Rotorcraft Fuselage Scattering, Computational Aero-Acoustiacoustic, BEM,scattering test, shielding experiments,noise Propagation, Acoustic Wind Tunnel, GARTEUR
Event Title:47 European Rotorcraft Forum (ERF) 2021
Event Location:virtual
Event Type:international Conference
Event Dates:07.-09. Sep.2021
Organizer:Royal Aeronautical Society UK
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: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, BS
Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Yin, Dr.-Ing. Jianping
Deposited On:29 Nov 2021 13:18
Last Modified:29 Nov 2021 13:18

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