A SMA Based Morphing Leading Edge Architecture

Abstract:

Article Preview

This paper analyses a morphing leading edge device, activated by a Shape Memory Alloy (SMA) actuator. The objective is to achieve the Droop Nose effect for particular phases of the flight (e.g. take-off, landing), both obtaining an increased lift and preserving the laminar flow. The device is constituted of: a kinematic chain at the level of the wing section, transmitting motion to the skin, this way fitting the Droop Nose target shape; a span-wise architecture integrated with a SMA actuator, ensuring both a reduction of the actuation forces and the balancing of the aerodynamic external load. A dedicated logical framework was adopted for the design, taking into account the SMA material features and the device intrinsic non-linearity. The framework was integrated within an optimization genetic algorithm, to fit the target shape with an appropriate architecture topology. The optimized system proved to produce the desired morphing, also under the most severe aerodynamic loads.

Info:

Periodical:

Edited by:

Dashnor Hoxha, Francisco E. Rivera and Ian McAndrew

Pages:

383-388

Citation:

S. Ameduri, "A SMA Based Morphing Leading Edge Architecture", Advanced Materials Research, Vol. 1016, pp. 383-388, 2014

Online since:

August 2014

Authors:

Export:

Price:

$41.00

* - Corresponding Author

[1] T. Kühn: Aerodynamic Optimization of a Two-Dimensional Two-Element High Lift Airfoil with a Smart Droop Nose Device, 1st EASN Association Workshop on Aerostructures, (2010), Paris, France.

[2] G. Tomassetti, S. Ameduri and A. Carozza: Innovative streamline-flow preserving actuation strategies for wing airfoil nose, volume 2 of International Journal of Structural Integrity, (2011).

DOI: https://doi.org/10.1108/17579861111183939

[3] S. Ameduri, A. Brindisi, B. Tiseo, A. Concilio and R. Pecora: Optimization and Integration of Shape Memory Alloy (SMA)-Based Elastic Actuators within a Morphing Flap Architecture, volume 23 of Journal of Intelligent Material Systems and Structures, (2012).

DOI: https://doi.org/10.1177/1045389x11428672

[4] D.A. Perkins, J.L. Reed and E. Havens: Morphing wing structures for loitering air vehicles. 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, AIAA, (2004) Palm Springs, CA.

DOI: https://doi.org/10.2514/6.2004-1888

[5] T. L. Grigorie, A. V. Popov, R. M. Botez, M. Mamou and Y. Mébarki: On-off and proportional-integral controller for a morphing wing. part 1: actuation mechanism and control design, volume 226 of Journal of Aerospace Engineering, (2012).

DOI: https://doi.org/10.1177/0954410011408226

[6] G. A. Lesieutre, J. A. Browne and M. I. Frecker: Scaling of performance, weight, and actuation of a 2-d compliant cellular frame structure for a morphing wing, volume 22 of Journal of Intelligent Material Systems and Structures (2011).

DOI: https://doi.org/10.1177/1045389x11412641

[7] P. Monner, J. Riemenschneider: Background and recent results of the European project Smart High Lift Devices for Next Generation Wings, 1st EASN Association Workshop on Aerostructures, (2010), Paris, France.

[8] S. Ameduri: Dispositivo di variazione di geometria del profilo, patent pending EP12425175.

[9] A. Maheri and A.T. Isikveren: Design of a single-DOF kinematic chain using hybrid GA-pattern search and sequential GA, volume 226 of Journal of Mechanical Engineering Science, (2011).

DOI: https://doi.org/10.1177/0954406211423730