Design and experiment of concentrated flexibility-based variable camber morphing wing

作     者：Yuzhu LI Wenjie GE Jin ZHOU Yonghong ZHANG Donglai ZHAO Zhuo WANG Dianbiao DONG Yuzhu LI;Wenjie GE;Jin ZHOU;Yonghong ZHANG;Donglai ZHAO;Zhuo WANG;Dianbiao DONG

作者机构：School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China School of Aeronautic Science and EngineeringBeihang UniversityBeijing 100083China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2022年第35卷第5期

页      面：455-469页

核心收录：

学科分类：08[工学] 082501[工学-飞行器设计] 0825[工学-航空宇航科学与技术] 

基　　金：supported by National Natural Science Foundation of China(No.50975230) Natural Science Basic Research Plan in Shaanxi Province of China(No.2017JM500) National Natural Science Foundation of China(No.51375383)。 

主　　题：Aircraft Concentrated flexure hinge Leading-edge Morphing wing Pseudo-rigid-body model 

摘      要：The morphing wing has a significant positive effect on the aerodynamic performance of the aircraft.This paper describes a leading-edge of variable camber wing with concentrated flexibility based on the geared five-bar mechanism.The driving points of morphing skin formed by the glass fibre composite sheet were optimized to make the skin deformation smooth.A geared fivebar kinematic mechanism rigidly connected to the skin was proposed to drive the leading-edge deformation.Besides,a new kind of concentrated flexure hinge was designed using the pseudorigid-body method and applied to the joint between the rigid mechanism and the skin.Finally,the leading-edge prototypes with traditional hinges and flexure hinges were produced,respectively.The feasibility of the concentrated flexibility leading-edge was verified through the comparative experiments of ground deformation.Simultaneously,aerodynamic analysis was carried out to compare the concentrated flexure leading-edge wing with the original airfoil.