RESEARCH ON THE EFFECT OF COMPOSITE PLY ANGLE ON NONLINEAR AEROELASTICITY OF HIGH-ASPECT-RATIO WING

doi:10.19936/j.cnki.2096-8000.20210528.002

Abstract

Abstract: In order to reduce weight and increase the lift-to-drag ratio, modern aircraft structures generally adopt high-aspect-ratio layout, and the proportion of lightweight composite materials in the aircraft structure is also increasing. In order to study the effect of composite layering angle on the nonlinear aeroelasticity and longitudinal aerodynamic characteristics of high-aspect-ratio wing, the structural deformation of the wing is selected as the optimization goal, and the structural strength is used as the constraint. The screening method was used to optimize the lay angle of the skin of the composite high-aspect-ratio wing. After optimization, the stiffness of the wing is significantly enhanced. Then, based on the loosely coupled two-way fluid-structure coupling numerical simulation method, the nonlinear aeroelasticity and flow field of the high-aspect-ratio wing before and after optimization are numerically simulated, and the effect of the composite layering angle on the nonlinear aerodynamics of the high-aspect-ratio wing is analyzed. The influence of elastic deformation and longitudinal aerodynamic characteristics is analyzed.

Key words: high-aspect-ratio wing, optimized layer angle, two-way fluid-structure coupling, longitudinal aerodynamic characteristics

CLC Number:

TB332

WANG Jun-li, LI Qing-qing, LU Zheng-wu, LEI Shuai, LI Tuo-lei, SHEN Nan. RESEARCH ON THE EFFECT OF COMPOSITE PLY ANGLE ON NONLINEAR AEROELASTICITY OF HIGH-ASPECT-RATIO WING[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(5): 12-20.

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