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Design of morphing winglets with the inclusion of nonlinear aeroelastic effects

Part of: Smart Aircraft

Published online by Cambridge University Press:  27 January 2016

R. De Breuker ,
M. Abdalla  and
Z. Gürdal
R. De Breuker*
Affiliation:
Aerospace Structures and Computational Mechanics, Delft University of Technology, Delft, The Netherlands
*
r.debreuker@tudelft.nl
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Abstract

A nonlinear aeroelastic model capable of assessing arbitrary morphing manoeuvres and calculating the associated morphing energy requirement is presented in this paper. The aeroelastic model consists of a close coupling between a corotational beam element, accounting for geometric nonlinearities, and a Weissinger method aerodynamic model, containing the Prandtl-Glauert correction for high-subsonic Mach numbers. The morphing deformations are discretised into three distinct morphing modes; fold morphing, twist morphing, and shear morphing, because of which virtually any morphed shape can be achieved, given a proper distribution of the three modes over the wing. The proposed aeroelastic morphing framework is used to design morphing winglets, and it has been shown that morphing winglets can improve the performance of fixed winglets significantly for regional airliners.

Type
Research Article
Information
The Aeronautical Journal , Volume 115 , Issue 1174 , December 2011 , pp. 713 - 728
Copyright
Copyright © Royal Aeronautical Society 2011 

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