Methodology for assessment of the weight characteristics of the cargo aircraft wings using multidisciplinary numerical simulation and analytical methods of multi objective optimization

The developed methodology determines the weight characteristics of a wing of high aspect ratio using the integral criterion - the carrying load factor coefficient and numerical mathematical modeling in the fields of aerodynamics and rigid body mechanics. The paper considers the application of a multi-objective optimization method based on genetic algorithms to find the rational position of the spars in the wing when choosing its structural scheme. The calculation of the air load distribution within the framework of the proposed method is based on mathematical modeling of flows by the vortex lattice method. The ideal weight criterion is calculated based on the stress state of the wing structure obtained by the finite element method. The efficiency of the method is shown by the example of solving a demonstration problem to assess the influence of several geometric parameters of the wing on the air load distribution and its weight characteristics.