Patent ID: 7549844
Filing Date: 2009-06-23
Classification: F01D,F05D

Abstract:
1. A turbine airfoil, comprising: a generally elongated, hollow airfoil formed by an outer wall and having a leading edge, a trailing edge, a tip section at a first end, a root coupled to the airfoil at an end generally opposite the first end for supporting the airfoil and for coupling the airfoil to a disc, and a cooling system formed from at least one cavity in the elongated, hollow airfoil positioned in internal aspects of the generally elongated, hollow airfoil; at least one trailing edge cooling channel positioned within the generally elongated, hollow airfoil and proximate to the trailing edge, wherein the at least one trailing edge cooling channel comprises a central trailing edge cooling channel, at least one suction side trailing edge cooling channel extending from the central trailing edge cooling channel through the trailing edge, and at least one pressure side trailing edge cooling channel extending from the central trailing edge cooling channel through the trailing edge; wherein the at least one suction side trailing edge cooling channel and the at least one pressure side trailing edge cooling channel are separated by a trailing edge rib forming the trailing edge and positioned in a general spanwise direction and the at least one suction side trailing edge cooling channel and the at least one pressure side trailing edge cooling channel are recessed from an outer surface forming the trailing edge; and a plurality of chordwise support ribs extending chordwise from the outer wall into contact with the trailing edge rib.