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Design of a retrofit winglet for transport aircraft with assessment of cruise and ultimate structural loads

Streit, Thomas and Himisch, Jan and Heinrich, Ralf and Nagel, Björn and Horstmann, Karl-Heinz and Liersch, Carsten (2006) Design of a retrofit winglet for transport aircraft with assessment of cruise and ultimate structural loads. In: Notes on Numerical Fluid Mechanics and Multidisciplinary Design, pp. 62-70. Springer. 15. DGLR-Fach-Symposium der STAB, 2006-11-29-2006-12-01, Technische Universität Darmstadt. ISBN 978-3-540-74458-0.

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Abstract

In this work retrofit winglets are designed for a transonic aircraft. The used geometry is a generic twin engine aircraft. In a first step winglets are designed using a lifting line method along with RANS solutions. L/D is optimized by taking into account a certain wing root bending moment reserve for the reference wing. The final analysis includes wing deformation studies by means of flow structure coupling. Therefore a finite element model has been developed with respect to standard loadings of certification autority. Using the flow structure coupling process RANS solutions with deformed wing shapes are obtained for cruise conditions in order to determine the influence of deformation on performance and for a 2.5g load case in order to evaluate ultimate structural loading. Comparing the results of rigid wing with the deformed wing the wing root bending moment and the bending moment of the device is clearly reduced for the deformed wing. Thereby the advantage to which an implementation of the described method for future design processes would lead becomes apparent.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Design of a retrofit winglet for transport aircraft with assessment of cruise and ultimate structural loads
Authors:
AuthorsInstitution or Email of Authors
Streit, ThomasUNSPECIFIED
Himisch, JanUNSPECIFIED
Heinrich, RalfUNSPECIFIED
Nagel, BjörnUNSPECIFIED
Horstmann, Karl-HeinzUNSPECIFIED
Liersch, CarstenUNSPECIFIED
Date:November 2006
Journal or Publication Title:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 62-70
Editors:
EditorsEmail
Tropea, CameronUNSPECIFIED
Jakirlic, SuadUNSPECIFIED
Heinemann, Hans-JoachimUNSPECIFIED
Henke, RolfUNSPECIFIED
Hönlinger, HeinzUNSPECIFIED
Publisher:Springer
Series Name:Volume 96
ISBN:978-3-540-74458-0
Status:Published
Keywords:winglet, transonic flow, flow-structure coupling, 2.5g load case, RANS, CFD, CSM, lifting-line method, DLR-TAU
Event Title:15. DGLR-Fach-Symposium der STAB
Event Location:Technische Universität Darmstadt
Event Type:national Conference
Event Dates:2006-11-29-2006-12-01
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V. (DGLR), DLR
HGF - Research field:Aeronautics, Space and Transport
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, L - Flexible Aircraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Institute of Aerodynamics and Flow Technology > Configuration Design
Deposited By: Dr.rer.nat. Thomas Streit
Deposited On:13 Mar 2009
Last Modified:12 Dec 2013 20:22

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