Analysis and Design of a Leading Edge with Morphing Capabilities for the Wing of a Regional Aircraft—Gapless Chord- and Camber-Increase for High-Lift Performance

Applied Sciences

Michael May¹  Seiji Adachi²  Julia Decker³  Dominik Laveuve³  Jens-David Wacker³  Conchin Contell Asins³  Volker Landersheim³ 

[1] Fraunhofer EMI, Ernst-Zermelo-Straße 4, 79104 Freiburg, Germany;Fraunhofer IBP, Nobelstraße 12, 70569 Stuttgart, Germany;Fraunhofer LBF, 64289 Darmstadt, Germany;

关键词: morphing;    leading edge;    carbon fibre reinforced plastic;    gapless;    CFD-analysis;    high-lift device;   

DOI  :  10.3390/app11062752

来源: DOAJ

【 摘 要 】

In order to contribute to achieving noise and emission reduction goals, Fraunhofer and Airbus deal with the development of a morphing leading edge (MLE) as a high lift device for aircraft. Within the European research program “Clean Sky 2”, a morphing leading edge with gapless chord- and camber-increase for high-lift performance was developed. The MLE is able to morph into two different aerofoils—one for cruise and one for take-off/landing, the latter increasing lift and stall angle over the former. The shape flexibility is realised by a carbon fibre reinforced plastic (CFRP) skin optimised for bending and a sliding contact at the bottom. The material is selected in terms of type, thickness, and lay-up including ply-wise fibre orientation based on numerical simulation and material tests. The MLE is driven by an internal electromechanical actuation system. Load introduction into the skin is realised by span-wise stringers, which require specific stiffness and thermal expansion properties for this task. To avoid the penetration of a bird into the front spar of the wing in case of bird strike, a bird strike protection structure is proposed and analysed. In this paper, the designed MLE including aerodynamic properties, composite skin structure, actuation system, and bird strike behaviour is described and analysed.

【 授权许可】

Unknown