针对传统结构设计中依据经验对机翼构件布局设计容易导致结构刚度偏大、重量偏大的问题,采用分离设计变量的方法,分别对机翼构件的尺寸和位置变量,采用改进的可行性方向法和Hook-Jeeves方法进行优化,将尺寸非线性优化嵌入到无约束位置优化中,以结构的刚度、位移、扭转和强度为约束条件,对布局进行调整。采用多学科框架软件对整个优化过程进行集成,将机翼结构重量作为目标函数,分级对位置和尺寸优化,充分考虑耦合位置和尺寸变量间的相互影响关系,循环迭代,直至得到结构重量的最优值。采用方法对某型飞翼无人机的机翼结构进行优化,结果合理,具有一定的工程应用价值。 Aiming at the problem that traditional design of wing structure can easily lead to large stiffness and heavy weight of the wing structure, the method of separating the design variables is adopted to improve the feasibility of the wing structure. Method and Hook-Jeeves method, the nonlinear optimization of dimensions is embedded into the unconstrained position optimization, and the structure is adjusted by the stiffness, displacement, torsion and strength of the structure as constraints. Multi-disciplinary framework software is used to integrate the whole optimization process. The weight of the wing structure is taken as the objective function, and the position and size of the wing structure are optimized. The interaction between the coupling position and the size variable is fully considered, and the iteration is repeated until the weight of the structure is obtained Excellent value. The method is used to optimize the wing structure of a flying wing UAV, the result is reasonable and has certain engineering application value.