Patent ID: 7094031

Claim:
A turbine rotor blade comprising: an airfoil, platform, and dovetail integrally joined together; said airfoil including pressure and suction sidewalls extending longitudinally in span from a root at said platform to a tip; said sidewalls being spaced laterally apart between leading and trailing edges and joined together by chordally spaced apart partitions extending longitudinally between said root and tip to define a plurality of outward and inward flow channels for channeling a coolant therethrough longitudinally outwardly from said root to tip and longitudinally inwardly from said tip to said root, respectively; and one of said outward channels includes a forward row of first slant turbulators extending from said suction sidewall and all said first turbulators being substantiallys identical to each other in said forward row, and an aft row of substantially identical second slant turbulators extending from said suction sidewall and offset longitudinally and overlapping chordally said first turbulators, and said second turbulators slant longitudinally inwardly toward said root and said trailing edge.