Patent ID: 8636470

Claim:
A turbine rotor assembly, comprising: a rotor; a blade extending from the rotor, the blade including: an airfoil defined by a convex suction side wall, a concave pressure side wall, a leading edge, a trailing edge, a root, and a tip, the walls and the tip each including an interior surface that defines an interior with the root, the interior including an airfoil cooling circuit for directing airflow through the blade, and a platform supporting the airfoil and having a leading side edge, a trailing side edge, a suction side edge, a pressure side edge, an airfoil-facing wall, and a root-facing wall, the platform including a platform cooling circuit independent from the airfoil cooling circuit and having an inlet on the leading side edge of the platform and an outlet, and a seal plate disposed adjacent to the rotor to form a cool air cavity for directing cool air to the inlet of the platform cooling circuit.