Nonlinear Control Logic for an Actuator to Morph a Wing: Design and Experimental Validation

Kammegne, Michel Joël Tchatchueng; Belhadj, Hamdi; Nguyen, Duc H.; Botez, Ruxandra Mihaela

doi:10.2316/p.2015.826-022

Cited by 3 publications

(2 citation statements)

References 35 publications

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“…The purpose of the project was to develop a full-size wing-tip structure equipped with a morphing upper surface and two types of ailerons: a conventional rigid aileron and a morphing aileron. The objective of the development of such a wing tip was threefold: 1) through upper surface morphing and aileron morphing change the shape of the wing and influence its aerodynamic performances towards delay of the transition of the flow between laminar and turbulent states; 2) through optimisation of the structure and of the upper surface composite skin, maintain a wing structure that respects structural requirements for certification and remains similar to a real aircraft wing-tip structure (24,25) ; and 3) demonstrate that an integrated control system for the morphing upper surface and ailerons can achieve the desired shapes obtained during numerical optimisation (26,27) .…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental transition results evaluation for a morphing wing and aileron system

et al. 2018

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A new wing-tip concept with morphing upper surface and interchangeable conventional and morphing ailerons was designed, manufactured, bench and wind-tunnel tested. The development of this wing-tip model was performed in the frame of an international CRIAQ project, and the purpose was to demonstrate the wing upper surface and aileron morphing capabilities in improving the wing-tip aerodynamic performances. During numerical optimisation with ‘in-house’ genetic algorithm software, and during wind-tunnel experimental tests, it was demonstrated that the air-flow laminarity over the wing skin was promoted, and the laminar flow was extended with up to 9% of the chord. Drag coefficient reduction of up to 9% was obtained when the morphing aileron was introduced.

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Section: Introductionmentioning

confidence: 99%

Numerical and experimental transition results evaluation for a morphing wing and aileron system

et al. 2018

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“…The strategy used in aircraft morphing studies is to divide the whole system into subsystems, studying them separately, proposing solutions, and then integrating the latter. Some authors have adopted this strategy focusing on the wing surface [8][9][10][11], actuator design [2,12,13], shape changing mechanisms [1,14,15], aeroelastic control [16][17][18], as well as controller design [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Characterization of shape memory alloy micro-springs for application in morphing wings

Emiliavaca

Araújo

Souto

et al. 2018

Smart Mater. Struct.

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The incessant quest for more efficient aircraft has driven research into the development of aircraft with morphing wings. This concept aims to increase the flight efficiency of the aircraft by adapting the wing to the present air flow condition. This technology still has some limitations, among them the control mechanism of the shape adaptation mechanism. Some researchers have proposed the application of intelligent materials as alternative to conventional drive systems. Particularly shape memory alloys (SMAs) have been investigated due to their ability to recover large deformations if subjected to a suitable temperature (simple drive mechanism by Joule heating). This work presents a thermomechanical characterization of NiTi SMA micro-springs for application in morphing wings. The actuators work in a regime where the shape memory effect is created by heating of the stress-induced martensite phase, a phenomenon little explored in the literature. An adaptive wing prototype was constructed; the variation in camber deflection is the response of actuator heating by the Joule effect. A 3D wing prototype was tested in a wind tunnel under different air flows, showing the suitability of the actuators for this application. Next, the behavior of these spring actuators when subjected to force and strain under realistic conditions is discussed based on the phase transformation temperatures and the actuator response to heating. These results are fundamental for choosing the actuator size for a particular application and for the parameterization of controllers.

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Numerical and Experimental Testing of a Morphing Upper Surface Wing Equipped with Conventional and Morphing Ailerons

Botez

Koreanschi

Gabor

et al. 2017

55th AIAA Aerospace Sciences Meeting

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Nonlinear Control Logic for an Actuator to Morph a Wing: Design and Experimental Validation

Cited by 3 publications

References 35 publications

Numerical and experimental transition results evaluation for a morphing wing and aileron system

Numerical and experimental transition results evaluation for a morphing wing and aileron system

Characterization of shape memory alloy micro-springs for application in morphing wings

Numerical and Experimental Testing of a Morphing Upper Surface Wing Equipped with Conventional and Morphing Ailerons

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