Patent attributes
A turbine blade with a blade tip having a plurality of vortex chambers formed below the blade tip surface, the vortex chambers flowing from the suction side to the pressure side of the airfoil. Each vortex chamber includes a metering inlet hole located on the side of the chamber at the suction side end such that the cooling air entering the chamber impinges onto the backside of the blade tip and then produces a vortex flow through the chamber. An exit slot is located at the end of each vortex chamber to produce impingement cooling on the backside of the pressure side wall prior to being discharged onto the outer surface of the blade near adjacent to the pressure side corner. Helical ribs extend along the vortex chambers to promote the formation of the vortex flow.
