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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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|
|Date:||07 January 2009|
|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|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L AR - Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Concepts & Integration|
|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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