Patent ID: 6682022
Filing Date: 2004-01-27
Classification: B64C,C25D,F01D,F04D,Y02T

Abstract:
A method for achieving boundary layer control of a structural element in a fluid stream, wherein:providing 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 a hollow imprint suitable for creating conductive areas separated by insulating areas by filling with dielectric resins that constitute the electroformed holes, the microporous structure having an external surface that is smooth and devoid of roughness and crossed by micro-holes in correspondence to the insulating areas of the matrix, and having a secondary fluid stream flowing through said at least one region towards or away from the external surface of the structural element in such a way to achieve a boundary layer control on said external surface thereof, said microporous structure produced by the means of an electrolytic electroforming procedure being directly fabricated from a single deposition procedure of said metal or metal alloy on said matrix arranged at the cathode.