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Effect of Noise Reducing Modifications of the Slat on Aerodynamic Properties of the High-Lift System

Ortmann, J. and Wild, J. (2006) Effect of Noise Reducing Modifications of the Slat on Aerodynamic Properties of the High-Lift System. In: Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 92, pp. 357-364. Springer Verlag. DGLR/STAB Symposium, Bremen (de), 16.-18.11.2004, 2004-11-16 - 2004-11-18, Bremen (de). ISBN 3-540-33286-3.

Full text not available from this repository.

Abstract

To minimize slat noise according to the guidelines of "A Vision for 2020" brush-like devices were installed on a slat trailing edge to "soften" it. In experiments slat noise was considerably reduced by such devices. But their effect on aerodynamics is yet unknown. This study shows that the investigated brush-like devices on slat trailing edges influence the aerodynamic properties of high-lift systems adversely. Because of increasing boundary layer thickness with length and diameter of the brushes the suction peaks are reduced so that C_L decreases. These are preliminary results. An optimization of slat chord length and brush length should be conducted to minimize C_L reduction.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Effect of Noise Reducing Modifications of the Slat on Aerodynamic Properties of the High-Lift System
Authors:
AuthorsInstitution or Email of Authors
Ortmann, J.UNSPECIFIED
Wild, J.UNSPECIFIED
Date:2006
Journal or Publication Title:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Refereed publication:Yes
In ISI Web of Science:No
Volume:92
Page Range:pp. 357-364
Editors:
EditorsEmail
Rath, Hans-JosefUNSPECIFIED
Holze, CarstenUNSPECIFIED
Heinemann, Hans-JoachimUNSPECIFIED
Henke, RolfUNSPECIFIED
Hönlinger, HeinzUNSPECIFIED
Publisher:Springer Verlag
ISBN:3-540-33286-3
Status:Published
Keywords:Noise Reduction of Slat Trailing Edge, Brushes, Aerodynamics, High-Lift System
Event Title:DGLR/STAB Symposium, Bremen (de), 16.-18.11.2004
Event Location:Bremen (de)
Event Type:national Conference
Event Dates:2004-11-16 - 2004-11-18
Organizer:DGLR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:28 Aug 2007
Last Modified:14 Jan 2010 19:44

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