Reivindicaciones

CLAIMS 1.- A computer-aided method suitable for assisting in the design of an aircraft by providing the dimensioning aerodynamic forces, skin values or values distribution around the complete aircraft or an aircraft component, characterized by comprising the following steps: a) Selecting a set of parameters of said complete aircraft or said aircraft component, being said aerodynamic forces, skin values or values distribution dependant of said parameters; b) Performing flow field CFD RANS computations for a number N1 of different combination of values of said parameters; c) Obtaining said aerodynamic forces, skin values or values distribution for whatever combination of values of said parameters through a reduced-order model, generated by computing the POD modes of the flow variables, expanding the flow variables using said POD modes and obtaining the POD coefficients of said expanded flow variables using a genetic algorithm that minimizes the error associated to the expansion of the Navier-Stokes equations. 2.- A computer-aided method according to claim 1 , characterized in that said selected set of parameters includes at least the angle of attack. 3.- A computer-aided method according to any of claims 1 -2, characterized in that said selected set of parameters includes at least the Mach number. 4.- A computer-aided method according to any of claims 1 -3 characterized in that said POD modes are obtained using a Higher Order Single Value Decomposition (HOSVD) technique taking into account a correction for the existence of possible shock waves in the flow field. 5.- A system for assisting in the design of an aircraft by providing the dimensioning aerodynamic forces, skin values or values distribution around the complete aircraft or an aircraft component which are dependant of a given set of parameters, characterized in that it comprises: a) A computer-implemented discrete model of said complete aircraft or said aircraft component and the surrounding fluid flow field; b) A computer-implemented CFD RANS module for calculating and storing said fluid dynamic forces, skin values or values distribution for a sample of cases having different combinations of values of said parameters; c) A computer-implemented High Order Single Value Decomposition (HOSVD) module capable of determining the POD modes of the flow field; d) A computer-implemented reduced order model module for performing quick calculations and storage of the flow field variable values, for whatever combination of values of said parameters, obtained by modelling the variables by means of an expanded series based on the flow field POD modes, having obtained the POD coefficients using a genetic algorithm that minimizes the error associated to implementing said expansion into the Navier-Stokes equations.