METHOD FOR CALCULATING THE HYDRODYNAMIC CHARACTERISTICS OF A CIRCUIT PLANNING ON THE UNDISTURBED SURFACE OF AN INCOMPRESSIBLE, WEIGHTLESS FLUID AT LOW SUBSONIC SPEEDS
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- Abstract
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This paper presents a method for calculating the hydrodynamic characteristics of a circuit interacting with the surface of an undisturbed, incompressible, weightless fluid at low subsonic speeds, to assess loads on the lifting surface in the interest of evaluating hydrodynamic loads on the wetted surface of a transport category aircraft fuselage during an emergency landing on a water surface. The problem is solved in a two-dimensional nonlinear unsteady formulation for an inviscid incompressible weightless fluid. It is assumed that the profile is streamlined without separation from the leading edge. The method uses the discrete vortex method for numerical implementation, where the lifting surface and the vortex wake shed from the trailing edge are modeled with discrete vortices. The wing analogy is used to obtain the hydrodynamic characteristics.
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Copyright (c) 2025 Вадим Каніщев,Олександр Расстригін,Андрій Варсєгов ,Олена Ісаєнко

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