General Electric Company
Turbine component cooling holes

Abstract:

A turbine component includes an internal surface, an external surface and a cooling hole. The cooling hole includes an inlet disposed on the internal surface, an outlet disposed on the external surface and a flow passage in fluid communication between the inlet and outlet. The flow passage includes a metering section extending from the inlet to a metering end, a diffusion zone extending from the metering end to the outlet, and a hooded region defined by a portion of the diffusion zone covered by a hood. The cooling hole also includes a vane extending across the flow passage, wherein a portion of the vane is disposed within the hooded region.