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Experimental Investigations In Low-Noise Trailing-Edge Design

Herr, M. and Dobrzynski, W. (2005) Experimental Investigations In Low-Noise Trailing-Edge Design. AIAA-Journal, 43 (6), pp. 1167-1175.

Full text not available from this repository.

Abstract

Within a parametric study on brush-type trailing-edge extensions, the noise reduction potential of several design concepts was determined. The obtained database represents the first phase of an ongoing project with the longterm objective to develop scaling laws for a future application of such devices as add-on solutions for today's aircraft components. The experiments comprised both acoustic and aerodynamic measurements on a zero-lift generic plate model (Re = 2.1 x 10_6 to 7.9 x 10_6) in DLR's open jet Aeroacoustic Wind Tunnel Braunschweig. Noise data were taken by means of a directional microphone system. Measurement results indicate a significant source reduction potential in excess of 10dB, depending on the configuration. Two relevant noise reduction mechanisms were identified: 1) the suppression of narrowband bluntness noise, as well as 2) the reduction of broadband turbulent boundary-layer trailing-edge noise.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2005,
Title:Experimental Investigations In Low-Noise Trailing-Edge Design
Authors:
AuthorsInstitution or Email of Authors
Herr, M.UNSPECIFIED
Dobrzynski, W.UNSPECIFIED
Date:2005
Journal or Publication Title:AIAA-Journal
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:43
Page Range:pp. 1167-1175
Status:Published
Keywords:Trailing Edge Noise, Brush Devices, Trailing Edge Brushes, Noise Reduction
HGF - Research field:Aeronautics, Space and Transport (old)
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: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:51

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