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Development of an empirical prediction model for flap side-edge noise

Rossignol, Karl-Stéphane (2010) Development of an empirical prediction model for flap side-edge noise. 16th AIAA/CEAS Aeroacoustics Conference, 7.-9. Juni 2010, Stockholm, Sweden.

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Abstract

The ultimate goal of the present study is the elaboration of an empirical noise prediction model applicable in the early development stage of low-noise aircraft. To this end, a series of aeroacoustic tests were performed to investigate the characteristics of flap side-edge noise. Two generic models, an isolated flap and a high-lift wing were selected for the experiments. Measurements of sound pressure levels as well as sound directivity were done using dedicated microphone arrays. Moreover, the acoustic investigation was complemented by flow measurements done with a 7-hole probe. Further analysis of the data revealed the effectiveness of the flap tip cross-flow velocity in scaling noise spectra. The main characteristics of the noise directivity were also determined. These results allow the formulation of a preliminary empirical prediction scheme.

Item URL in elib:https://elib.dlr.de/68187/
Document Type:Conference or Workshop Item (Speech)
Title:Development of an empirical prediction model for flap side-edge noise
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rossignol, Karl-Stéphanekarl-stephane.rossignol (at) dlr.deUNSPECIFIED
Date:7 June 2010
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aeroacoustic, Airframe noise, Flap side-edge noise, Microphone array, Noise prediction
Event Title:16th AIAA/CEAS Aeroacoustics Conference
Event Location:Stockholm, Sweden
Event Type:international Conference
Event Dates:7.-9. Juni 2010
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Quiet Air Traffic (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Rossignol, Karl-Stephane
Deposited On:18 Jan 2011 10:12
Last Modified:08 May 2014 23:28

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