Patent ID: 6402470
Filing Date: 2002-06-11
Classification: F01D,F05D

Abstract:
A cooling circuit disposed between a first wall portion and a second wall portion of a wall for use in a gas turbine engine, comprising:a plurality of first pedestals extending between said first wall portion and said second wall portion, and arranged in rows, and wherein adjacent said first pedestals in the same said row are separated from one another by an intra-row distance, and wherein said first pedestals in adjacent said rows are separated by an inter-row distance, and said intra-row distance is greater than said inter-row distance; one or more inlet apertures disposed in said wall providing a cooling air flow path into said cooling circuit; and one or more exit apertures disposed in said wall providing a cooling air flow path out of said cooling circuit; wherein said first pedestals within adjacent said rows are offset from one another and passages extending through two or more of said first pedestal rows follow a serpentine path; and wherein said cooling circuit has a forward end upstream of an aft end and a first side and a second side, said sides extending lengthwise between said forward and aft ends, wherein said passages adjacent said sides have a cross-sectional area greater than said cross-sectional area of said passages extending through two or more of said first pedestal rows elsewhere within said cooling circuit.