Chmovzh V. Wing in ground effect aerodynamic

Dissertation is devoted to some questions on investigation wing in ground effect aerodynamics. A boundary problem of flow for wing and past airfoil moving at small relative distances from the ground in potential field of nonviscous incompressible liquid was formulated. The boundary problem is solving by using an approximate method, based on limit degeneration of Laplace equation in narrow flow zone between the ground and lower surface of the body to Poisson's equation. New results for aerodynamic characteristics of lifting surfaces, which are different in planforms, were received basing on numerical solving Poisson's equation with Direkhle's boundary conditions. Flow parameters and aerodynamic characteristics of the wing were calculated basing on slender-body theory and method of small parameter. The solutions of reverse problems WIG aerodynamics were investigated. Basically correlation's for determination the shape of wing surface and centre line of airfoil were wrote down by given parameters of the f low. The variational task on the definition of optimal shape arc profile was considered.