Lyakhovskiy Y. Method of calculation of nonlinear distributed aerodynamic characteristics of airplane with screw flow propellers

Object of research - airplane with propeller propulsors streamlined by a flow of ideal fluid. The purpose of activity - definition of non-linear distributed aerodynamic properties of an airplane with propeller propulsors on the basis of the solution of a problem of joint streamlining of a solid fuselage and thin bearing surfaces. For simulation of streamlining of a surface of an insulated fuselage, the improved panel method of the low order, founded on algorithm Bubnova-Galerkina, permitting was applied to allow for unlearn-out boundary conditions on all surface of a small member. The thin bearing surfaces were calculated by a method of discrete vortexes. The scientific value of activity consists in the solution of the research problem of influencing of a kinematic flight parameters, activity of propellers and trailing-edge flap deflection on non-linear distributed aerodynamic properties of an airplane with propeller propulsors with the help of the designed numerical method of calculation streamliningof volumetric bodies having a uniform convergence on number of members and conservatism. The practical value of activity consists in definition of influencing of angles of attack and slip, flap setting angles and activity of propellers on the corrections for position error to observed datas of static-pressure pick-ups and development of the guidelines at the choice of rational position of these receivers on a fuselage of an airplane with propeller propulsors. The outcomes of researches are inserted in researches and minings of the research institute PFM (Kharkov), in research robots № 099204, code "Statics - A", № 098220, code "Correction - 1" and educational process of a Kharkov Institut of Air Force