Description of Position Control Laws for Functionality Test of a Bi-modal Morphing Flap

M. C. Noviello, F. Rea, M. Arena, R. Pecora, and F. Amoroso
Department of Industrial Engineering- Aerospace Division, University of Naples “Federico II”, Naples, Italy
Abstract— Modern aerospace research programs are increasingly focusing on structural design strategies based on the adaptive wing philosophy. Morphing wing technologies are being studied because they can be used to maximize the aerodynamic efficiency, maneuverability, and load control effectiveness under different flight conditions. As one of the most important research projects in Europe, the JTI Green Regional Aircraft (GRA) focused on the design and demonstration of a true-scale morphing flap applicable to the natural laminar flow (NLF) wing of a 130-seat EASA CS25 category reference aircraft. The authors worked on developing an appropriate actuation and control system to enable flap bi-modal operational modes. In the deployed configuration, the overall camber morphs during take-off and landing for high-lift performances. In the stowed configuration, the flap trailing edge (nearly 10% of the local chord) is deflected upwards and downwards to improve the wing aerodynamic efficiency during cruising. Tailored control units were programmed according to a proper digital logic control law based on LTI DriveManager® software. Flap functionality tests showed that the obtained morphed shapes had an excellent correlation with the design target geometries.

Index Terms—morphing flap prototype, digital logic law, plugs programming, functionality test

Cite: M. C. Noviello, F. Rea, M. Arena, R. Pecora, and F. Amoroso, "Description of Position Control Laws for Functionality Test of a Bi-modal Morphing Flap," International Journal of Mechanical Engineering and Robotics Research, Vol. 8, No. 1, pp. 31-40, January 2019. DOI: 10.18178/ijmerr.8.1.31-40
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