Patent ID: 6254334
Filing Date: 2001-07-03
Classification: F01D,F05D

Abstract:
A coolable airfoil, comprising:a body having a wall;a cavity surrounded by said wall;at least one cooling circuit disposed in said wall, said cooling circuit having a length extending between a forward end and an aft end, and a width extending between a pair of sides, wherein said cooling circuit includes:a first wall portion;a second wall portion;a plurality of first pedestals extending between said first wall portion and said second wall portion;an inlet aperture disposed in said wall, providing a cooling air flow path between said cavity and said forward end of said cooling circuit; anda plurality of exit apertures disposed in said second wall portion, providing a cooling air flow path between said aft end of said cooling circuit and outside said wall;wherein said cooling circuit has a flow area within a plane extending widthwise across said cooling circuit, and wherein said flow area progressively decreases within said cooling circuit from said inlet aperture to said exit apertures.