Patent ID: 7690892
Filing Date: 2010-04-06
Classification: F01D,F05D

Abstract:
1. An air cooled turbine airfoil comprising: a leading edge region and a trailing edge region; a pressure side wall and a suction side wall both extending between the leading edge region and the trailing edge region; a radial extending cooling air supply channel formed at the leading edge and connected to a source of cooling air external to the airfoil; a plurality of first radial extending cooling channels formed along the suction side wall to provide impingement cooling to the suction side wall; a plurality of second radial extending cooling channels formed along the pressure side wall to provide impingement cooling to the pressure side wall; and, the first and second radial extending cooling channels being connected by metering and impingement holes to form a series of alternating pressure side wall to suction side wall impingement channels from the leading edge region to the trailing edge region.