Patent ID: 8186965

Claim:
A turbine blade comprising: an airfoil, platform, and integral dovetail; said airfoil having opposite pressure and suction sides extending in chord between leading and trailing edges and extending in span from root to tip, wherein said pressure side is concave and said suction side is convex, wherein said airfoil increases in width aft from said leading edge to a maximum width at a hump in said suction side, and then converges to said trailing edge; said tip including first and second ribs extending from a tip floor along said pressure and suction sides, respectively; said first and second ribs are joined together at said leading edge and spaced transversely apart at said trailing edge to define an aft outlet, and a tip baffle extends chordally between said ribs to define a first pocket along said first rib laterally open at said aft outlet, and also defining a laterally closed second pocket along said second rib, wherein said tip baffle commences between said leading edge and hump and terminates between said hump and trailing edge; and said first pocket converges aft along said tip baffle and terminates in an aft flow channel spanning said first and second ribs.