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针对弹性变形对前掠翼气动特性的影响,基于改进的CFD/CSD松耦合静气动弹性数值计算方法,在高亚声速条件下,对前掠角χ=10°,20°,30°的前掠翼纵向气动特性和副翼操纵效率进行了计算和分析。结果表明,迎角较小时,弹性翼的升力、升阻比和俯仰力矩较刚性翼大,大迎角时恰恰相反;随着前掠角的增加,机翼的弯扭变形和气动参数变化的程度愈加剧烈;在最大升阻比、迎角α=4°、副翼偏转角δ=20°时,弹性翼的副翼操纵效率略大于刚性翼。该研究可为前掠翼布局的设计提供借鉴。
Aiming at the influence of elastic deformation on aerodynamic characteristics of anterior swept wing, based on the improved CFD / CSD loosely coupled aerodynamic and elastic numerical calculation method, under the condition of high subsonic velocity, the pre-swept angle χ = 10 °, 20 °, 30 ° Longitudinal aerodynamic characteristics of sweep wing and aileron manipulation efficiency were calculated and analyzed. The results show that when the angle of attack is small, the lift, lift-drag ratio and pitch moment of the elastic wing are larger than those of the rigid wing and the high-angle of attack. With the increase of the sweep angle, the deformation of the wing and the variation of the aerodynamic parameters The degree of the more intense; at the maximum lift-drag ratio, angle of attack α = 4 °, aileron deflection angle δ = 20 °, flexible wing aileron manipulation efficiency slightly larger than the rigid wing. This study can provide reference for the design of the front-swept wing layout.