首页|Design optimization and testing of a morphing leading-edge with a variable-thickness compliant skin and a closed-chain mechanism

Design optimization and testing of a morphing leading-edge with a variable-thickness compliant skin and a closed-chain mechanism

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Climate warming and the increased demand in air travels motivate the aviation industry to urgently produce technological innovations.One of the most promising innovations is based on the smoothly continuous morphing leading-edge concept.This study proposes a two-step process for the design of a morphing leading-edge,including the optimization of the outer variable-thickness composite compliant skin and the optimization of the inner kinematic mechanism.For the compliant skin design,an optimization of the variable thickness composite skin is proposed based on a laminate continuity model,with laminate continuity constraint and other manufacturing constraints.The laminate continuity model utilizes a guiding sequence and a ply-drop sequence to describe the overall stacking sequence of plies in different thickness regions of the complaint skin.For the inner kinematic mechanism design,a coupled four-bar linkage system is proposed and optimized to produce specific trajectories at the actuation points on the stringer hats of the compliant skin,which ensures that the compliant skin can be deflected into the aerodynamically optimal profile.Finally,a morphing leading-edge is manufactured and tested.Experi-mental results are compared with numerical predictions,confirming the feasibility of the morphing leading-edge concept and the overall proposed design approach.

OptimizationDesignMorphing wingCompliant skinKinematicsLeading-edgeControl surfaces

Zhigang WANG、Xiasheng SUN、Yu YANG、Wenjie GE、Daochun LI、Jinwu XIANG、Panpan BAO、Qi WU、Andrea DA RONCH

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School of Aeronautical Science and Engineering,Beihang University,Beijing 100191,China

National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi'an 710065,China

School of Aeronautics and Astronautics,Shanghai Jiao Tong University,Shanghai 200240,China

School of Mechanical Engineering,Northwestern Polytechnical University,Xi'an 710072,China

Faculty of Engineering and Physical Sciences,University of Southampton,Southampton SO17 1JB,UK

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National Research Project"Variable CAmber wing TechNology(VCAN)",China

2024

10.1016/j.cja.2024.04.021

中国航空学报(英文版)
中国航空学会

中国航空学报(英文版)

CSTPCDEI
影响因子：0.847
ISSN：1000-9361
年,卷(期)：2024.37(7)
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