The paper proposes a method for determining of an aircraft wing thermal state during flight in icing conditions. The method is based on a probabilistic representation of a boundary value problem for a parabolic type equation and numerical solution of stochastic differential equations. It is assumed that the heat exchange process in a problem of the type under consideration is described quite well by the boundary value problem for the two-dimensional heat equation. The approximate solution definition at a given point is reduced to the numerical simulation of the diffusion random process paths.
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