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- Title
Design of morphing winglets with the inclusion of nonlinear aeroelastic effects.
- Authors
De Breuker, R.; Abdalla, M.; Gurdal, Z.
- 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.
- Subjects
AEROELASTICITY; AERODYNAMICS; AIRFRAMES; MACH number; AIRPLANE wings; TRANSPORT planes; AIRPLANE design
- Publication
Aeronautical Journal, 2011, Vol 115, Issue 1174, p713
- ISSN
0001-9240
- Publication type
Article
- DOI
10.1017/S0001924000006461