面向代理模型的机翼变形计算方法

按照机翼结构设计的原则,对内部结构还未确定的机翼提出了一种通用的变形计算方法。机翼的平面形状可看作由多个梯形组成,机翼弯曲变形为三次函数,扭转变形为一次函数。只要给定翼梢挠度与扭转角,即可计算机翼变形情况下的几何模型,使代理模型能够预测变形后机翼的气动载荷分布。文中给出了两个实际机翼的算例。算例结果表明,本文模型预测的变形与实际结构有限元分析给出的变形吻合较好。

Wing Deformation Algorithm for Surrogate Model

According to the principles in the structure design,a model for the computation of the wing deformation is put forward.The wing configuration consists of some trapeziums.The wing is supposed to be deformed with a cube polynomial for bending and linear for torsion under aerodynamics.With a given bending and torsion deformation of wing tip,the whole transformed geometry can be estimated.The predication of the lift distribution is more effective and accurate.Two examples prove the feasibility of the method.