Patent ID: 9289826
Filing Date: 2016-03-22
CPC Classification: B22F,B33Y,F01D,F05D,Y02P,Y02T,Y10T

Claim Text:
1. A method of manufacturing a stator airfoil assembly, comprising: forming an interior wall of a stator airfoil using an additive manufacturing technique; forming an exterior wall of the stator airfoil using the additive manufacturing technique; forming a flange over an outer radial wall cooling air opening of the stator airfoil using the additive manufacturing technique, wherein the flange is disposed radially over the opening such that the flange intersects with a radial projection of the opening and such that cooling air flows around the flange to enter into the airfoil; and forming a plurality of internal ribs between the interior wall and the exterior wall using the additive manufacturing technique, wherein a cooling air circuit is formed in a space between the interior wall and the exterior wall, and wherein the interior wall, the exterior wall, and the internal ribs are formed simultaneously as an integral structure by using the additive manufacturing technique.