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Minimal Induced Drag for Non-Planar Lifting Surfaces with Moderate and Small Aspect Ratio

Streit, Thomas and Visser, Kenneth and Liersch, Carsten (2008) Minimal Induced Drag for Non-Planar Lifting Surfaces with Moderate and Small Aspect Ratio. 16. DGLR-Fachsymposium der STAB, 3.- 4. Nov. 2008, Aachen, Deutschland. (In Press)

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Abstract

Summary The induced drag of non-planar wings is compared to that of planar wings which result from unfolding the non-planar ones. It is shown that due to the induced lift, there exist non-planar configurations with positive span camber that have an overall aerodynamic performance increase in comparison to the planar ones. The induced lift and increment of aerodynamic performance increases with decreasing aspect ratio. The effect is opposite for configurations with negative camber. Without the induced lift, the positive non-planar configuration would have more induced drag. Analysis is performed using a lifting line method, which takes into account the induced lift, and using Euler solutions. For the inviscid solutions, the induced drag is obtained with a far-field drag analysis method.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Minimal Induced Drag for Non-Planar Lifting Surfaces with Moderate and Small Aspect Ratio
Authors:
AuthorsInstitution or Email of Authors
Streit, ThomasUNSPECIFIED
Visser, Kennethvisser@clarkson.edu
Liersch, CarstenUNSPECIFIED
Date:2008
Status:In Press
Keywords:Induced Drag, Non-planar wings, Euler solutions, LIFTING_LINE, far-field drag analysis
Event Title:16. DGLR-Fachsymposium der STAB
Event Location:Aachen, Deutschland
Event Type:international Conference
Event Dates:3.- 4. Nov. 2008
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 - 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 09:55
Last Modified:22 Feb 2010 09:55

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