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Modelling and Design of wing tip devices at various flight conditions using a databased aerodynamic prediction tool

Büscher, Alexander and Radespiel, Rolf and Streit, Thomas (2006) Modelling and Design of wing tip devices at various flight conditions using a databased aerodynamic prediction tool. Aerospace Science and Technology, 10 (8), pp. 668-678. Elsevier. ISSN 1270-9638.

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Abstract

A design study of wing tip devices at high and low speeds is described. The basis of the design study is an equivalent drag approach containing both aerodynamic drag gain and structural weight penalty. A comprehensive parameter study is carried out using a rapid aerodynamic prediction tool named Lift and Drag Component Analysis (LIDCA). Adding to an available lifting line-method a databased module for airfoil data is employed that uses results of two-dimensional flow simulations by multidimensional interpolation. Detailed validation studies of the method at high lift and high speed have demonstrated good accuracy. RANS computations of the selected wing tip designs confirm the predicted benefits at cruise condition. The result of the most effective wing tip design are analysed at both flight conditions. Finally, options for improving the performance at take-off are suggested.

Document Type:Article
Title:Modelling and Design of wing tip devices at various flight conditions using a databased aerodynamic prediction tool
Authors:
AuthorsInstitution or Email of Authors
Büscher, AlexanderInstitute of Fluid Mechanics, Braunschweig Technical University
Radespiel, RolfInstitute of Fluid Mechanics, Braunschweig Technical University
Streit, ThomasUNSPECIFIED
Date:2006
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:10
Page Range:pp. 668-678
Publisher:Elsevier
ISSN:1270-9638
Keywords:Winglet, M_DAW, nonplanar wing, induced drag
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: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Configuration Design
Deposited By: Dr.rer.nat. Thomas Streit
Deposited On:11 Jan 2007
Last Modified:27 Apr 2009 13:24

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