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Source localisation on aircraft in flight - new measurements with the DLR research aircraft Airbus 320 ATRA

Siller, H. and Hage, W. and Schumacher, T. (2018) Source localisation on aircraft in flight - new measurements with the DLR research aircraft Airbus 320 ATRA. 7th Berlin Beamforming Conference (BeBeC), 5-6 March, 05.-06.03.2018, Berlin, Germany.

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Official URL: http://www.bebec.eu/Downloads/BeBeC2018/Papers/BeBeC-2018-D01.pdf

Abstract

Fly-over measurements with a large microphone array were performed with the Airbus A320-232 research aircraft ATRA of DLR. A large multi-arm spiral array was set up on the end of the runway of the airport. The aircraft trajectory was estimated from the vertical distance and time delays measured with an array of vertically mounted laser distance meters and GNSS trajectories recorded on board of the aircraft. Source localisation maps were obtained from a hybrid deconvolution method. The source powers in different regions of the aircraft were calculated by integrating over the source regions. The total power in the whole interrogation area matches the power in the far-field spectra, apart from contributions from sources on the ground plane which are reduced by focusing the array on the aircraft. Results from fly-overs in the same or in different configurations can be compared on the basis of the integration results and the individual sources can be ranked according to their contribution to the overall sound pressure.

Item URL in elib:https://elib.dlr.de/125986/
Document Type:Conference or Workshop Item (Speech)
Additional Information:BeBeC-2018-D01
Title:Source localisation on aircraft in flight - new measurements with the DLR research aircraft Airbus 320 ATRA
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Siller, H.UNSPECIFIEDUNSPECIFIED
Hage, W.UNSPECIFIEDUNSPECIFIED
Schumacher, T.UNSPECIFIEDUNSPECIFIED
Date:2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:acoustic source localisation microphone array fly-over aircraft noise
Event Title:7th Berlin Beamforming Conference (BeBeC), 5-6 March
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:05.-06.03.2018
Organizer:GfaI
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation methods
Location: Berlin-Charlottenburg
Institutes and Institutions:Institute of Propulsion Technology > Engine Acoustic
Deposited By: Siller, Henri
Deposited On:21 Jan 2019 09:42
Last Modified:31 Jul 2019 20:23

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