Patent ID: 6488238
Filing Date: 2002-12-03
Classification: B64C,C25D,F01D,F04D,Y02T

Abstract:
A method for achieving boundary layer control of a structural element in a fluid stream, wherein:providing in such structural element at least one region having a microporous structure produced by means of an electrolytic electroforming procedure in which there is deposition of a metal or metal alloy on a matrix arranged at the cathode and having conductive areas separated by insulating areas, the microporous structure having an external surface that is smooth and devoid of roughness and being crossed by micro-holes that correspond to the insulating areas of the matrix, the micro-holes having diameters smaller than 300 &mgr;m, the density of such micro-holes being from 2-10 holes/mm, and having a fluid stream flow through the said at least one region towards or away from the external surface of the structural element.