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Numerical Implications of Spanwise Camber on Minimum Induced Drag Configurations

Liersch, Carsten Martin and Streit, Thomas and Visser, Kenneth (2009) Numerical Implications of Spanwise Camber on Minimum Induced Drag Configurations. 47th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition, 05.-08. Jan. 2009, Orlando, Florida, USA.

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Abstract

Lifting line and Euler techniques have indicated that an elliptical planform cambered in the spanwise direction appears to have a lower induced drag than the uncambered, planar configuration, when both of then have identical arc lengths and the same wetted areas. In other words, a wing geometry with a lower projected span than the planar wing, only because of spanwise cambering, has been found to have a lower induced drag than the corresponding planar case. It was also noted that in the Euler solutions the theoretical minimum induced drag was not achieved on a planar configuration without applying a twist distribution. The increased efficiency of the non-planar configuration is due to induced lift and without accounting for this induced lift, the induced drag is larger then that of the corresponding unfolded planar wing. Induced lift and aerodynamic efficiency of the spanwise cambered configuration was observed to increase with reduced aspect ratio.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Numerical Implications of Spanwise Camber on Minimum Induced Drag Configurations
Authors:
AuthorsInstitution or Email of Authors
Liersch, Carsten MartinUNSPECIFIED
Streit, ThomasUNSPECIFIED
Visser, Kennethvisser@clarkson.edu2009
Date:7 January 2009
Status:Published
Keywords:Induced Drag, non-planar wings, LIFTING_LINE, Euler solutions, far-field drag analysis
Event Title:47th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition
Event Location:Orlando, Florida, USA
Event Type:international Conference
Event Dates:05.-08. Jan. 2009
Organizer:AIAA
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 - Concepts & Integration
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Configuration Design
Deposited By: Dr.rer.nat. Thomas Streit
Deposited On:22 Feb 2010 09:54
Last Modified:22 Feb 2010 09:54

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