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Surrogate-based optimization of a morphing winglet for flexible aircraft

Delavenne, Martin and Barriety, Bernard and Vetrano, Fabio and Ferrand, Valérie and Salaün, Michel Surrogate-based optimization of a morphing winglet for flexible aircraft. (2019) In: International Forum on Aeroelasticity and Structural Dynamics (IFASD 2019), 10 June 2019 - 13 June 2019 (Savannah, United States).

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Since the pioneering work by Whitcomb [1] in the mid-70’s winglets have demonstrated their capabilities to improve aircraft efficiency. However, they are fixed devices and optimized for certain flight conditions. This paper investigates the opportunity to make these wing extensions active to control aircraft performances along the flight. To assess the efficiency of such a technology, high-fidelity computations coupling aerodynamics and structural mechanics disciplines are used. Surrogate models are built to speed-up the optimization process. Multiobjective and gradient-free algorithms are used to search the optimal winglet shape in cruise condition and the optimal winglet deflection along the mission with block fuel minimization as objective. The capability of active winglets to control the wing shape and particularly the twist is demonstrated. It is also highlighted that the wing flexibility is a key driver of the efficiency of active winglets and must be considered to assess the performances of morphing devices. This document shows that depending on the baseline choice the gains can be quadrupled if the stiffness is neglected.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Airbus (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:21 Oct 2021 14:35

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