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Simulation of Complete Helicopter Noise in Maneuver Flight using Aeroacoustic Flight Test Database

Le Duc, Anne and Spiegel, Pierre and Guntzer, Frederic and Lummer, Markus and Götz, Joachim and Buchholz, Heino (2008) Simulation of Complete Helicopter Noise in Maneuver Flight using Aeroacoustic Flight Test Database. American Helicopter Society 64th Annual Forum, 2008-04-26 – 2008-05-01, Montréal, Canada.

Full text not available from this repository.

Abstract

This paper reports recent developments conducted at the DLR to set up a tool able to compute the ground noise footprint created by a complete helicopter in an arbitrary flight (including maneuvers). The computational tool relies on a hybrid approach: generation of an arbitrary trajectory, checks of flyability and comfort and propagation of noise down to the ground are performed numerically whereas noise emission characteristics are provided by an aeroacoustic database. The underlying idea is that the instantaneous noise emission of the whole helicopter can be characterized by the instantaneous value of few aerodynamic parameters. The aeroacoustic database relates those quantities via postprocessing of the DLR flight campaign PAVE 2004. Its generation and extent is explained. When computing the noise of an arbitrary flight, interpolations within the aeroacoustic database are used. The whole method has been successfully validated versus experimental data, including ground noise footprint. The tool is used within the European project Friendcopter and the DLR project PAVE2 to minimize the ground noise footprint of flyable and comfortable flight procedures including arbitrary maneuvers, landing and take-off.

Item URL in elib:https://elib.dlr.de/58517/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Simulation of Complete Helicopter Noise in Maneuver Flight using Aeroacoustic Flight Test Database
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Le Duc, AnneUNSPECIFIEDUNSPECIFIED
Spiegel, PierreUNSPECIFIEDUNSPECIFIED
Guntzer, FredericUNSPECIFIEDUNSPECIFIED
Lummer, MarkusUNSPECIFIEDUNSPECIFIED
Götz, JoachimUNSPECIFIEDUNSPECIFIED
Buchholz, HeinoUNSPECIFIEDUNSPECIFIED
Date:May 2008
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aeroacoustics, flight mechanics, noise abatement flight procedures, helicopter
Event Title:American Helicopter Society 64th Annual Forum
Event Location:Montréal, Canada
Event Type:international Conference
Event Dates:2008-04-26 – 2008-05-01
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Quiet and Comfortable Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Guntzer, Frederic
Deposited On:31 Mar 2009
Last Modified:27 Apr 2009 15:56

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