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Effect of Acoustic Slat Modifications on Aerodynamic Properties of High-Lift Systems

Ortmann, Judith and Wild, Jochen (2007) Effect of Acoustic Slat Modifications on Aerodynamic Properties of High-Lift Systems. Journal of Aircraft, Vol. 44 (4), pp. 1258-1263.

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Abstract

The objective of this study is the determination of the effect of brushlike devices at the slat trailing edge on the aerodynamic properties of a high-lift system. Such devices have shown promising results with respect to significant noise reduction. But up to now, the effect of these devices on the aerodynamic properties hes not been considered. This study shows that all investigated cylindrical brush hairs affect the aerodynamic properties of a high-lift system adversely, due to the influenced slat wake. But by cutting many small gaps into the slat trailing edge, resulting in brushes of rectangular cross section, the effect on the global coefficients is minor, sometimes slightliy favorable.

Document Type:Article
Title:Effect of Acoustic Slat Modifications on Aerodynamic Properties of High-Lift Systems
Authors:
AuthorsInstitution or Email of Authors
Ortmann, JudithUNSPECIFIED
Wild, JochenUNSPECIFIED
Date:2007
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:Vol. 44
Page Range:pp. 1258-1263
Status:Published
Keywords:brushlike devices, CFD
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignement
DLR - Research theme (Project):L -- no assignement
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Configuration Design
Deposited By: Judith Geyr von Schweppenburg
Deposited On:18 Sep 2007
Last Modified:27 Apr 2009 13:53

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