elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Investigation of Turbo Machinery and Jet Noise of the V2500 Engine During Ground Tests with an A320 Aircraft

Siller, Henri and Bassetti, Alessandro and Funke, Stefan (2015) Investigation of Turbo Machinery and Jet Noise of the V2500 Engine During Ground Tests with an A320 Aircraft. 11th European Turbomachinery Conference, 23.-27. Mrz. 2015, Madrid, Spanien.

[img] PDF
14MB

Official URL: http://www.etc11.eu/program-at-the-glance/etc11-download-papers/

Abstract

The noise emission of a V2500 engine during ground operation was investigated with the A320 research aircraft ATRA of the German aerospace center DLR. Acoustic measurements with a microphone array parallel to the engine shaft axis were performed with the engines running at different speeds between idle and maximum continuous thrust. The main measurements took place in a noise-protection hangar, because optical measurents with laser devices were performed in parallel. In order to assess the impact of the room acoustics on the sound field, reference measurements were performed under free-field conditions, using the same microphone array set up on the ground. The array data were analysed using classical spectral methods and the SODIX (source directivity modelling in the cross-spectral matrix) method. SODIX fits equivalent source distributions, for different frequency bands and emission directions, to the measured cross-spectral matrices. The results show sources at the engine inlet, nozzle and along the jet. When the spectra and source distributions from the main measurements in the hangar are compared to the free-field data, the deviations are acceptable. This confirms that this type of noise protection hangar is a suitable environment to perform acoustic measurements of aircraft engines.

Item URL in elib:https://elib.dlr.de/99685/
Document Type:Conference or Workshop Item (Speech)
Title:Investigation of Turbo Machinery and Jet Noise of the V2500 Engine During Ground Tests with an A320 Aircraft
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Siller, HenriDLR AT-TRAUNSPECIFIED
Bassetti, AlessandroDLR AT-TRAUNSPECIFIED
Funke, StefanDLR AT-TRAUNSPECIFIED
Date:2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aircraft noise, jet-noise, source localisation, microphone array
Event Title:11th European Turbomachinery Conference
Event Location:Madrid, Spanien
Event Type:international Conference
Event Dates:23.-27. Mrz. 2015
Organizer:EUROTURBO
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:07 Dec 2015 15:07
Last Modified:31 Jul 2019 19:56

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.