Patent ID: 7704047
Filing Date: 2010-04-27
Classification: F01D,F05D,Y02T

Abstract:
1. A turbine blade comprising: an airfoil including an airfoil outer wall extending radially outwardly from a blade root; a blade tip surface located at an end of said airfoil distal from said root, and including pressure and suction sides joined together at chordally spaced apart leading and trailing edges of said airfoil; a squealer tip rail extending radially outwardly from said blade tip surface and including an aft portion extending chordally between said leading edge and said trailing edge adjacent said trailing edge; and a plurality of chordally spaced film cooling holes provided in a surface of said suction side and providing a flow of cooling fluid along said squealer tip rail surface at said suction side, wherein said film cooling holes are located in at least a portion of said squealer tip rail.