Patent ID: 8251665

Claim:
A turbine blade, comprising: a blade leaf arranged along a blade axis having a blade tip, a root opposite the tip, a suction side and a pressure side; a platform region arranged at the root of the blade leaf; a platform arranged at the platform region having a width and extending transversely with respect to the blade axis; a first platform wall arranged along the transition from the blade leaf to the platform that does not structurally support the blade leaf and has along the width of the platform an aerodynamic shape; and a second platform wall arranged in the platform region that structurally supports and is continuous with the blade leaf and has, along the width of the platform, a set-back step with respect to the first platform, wherein an interspace for cooling the platform is formed between the aerodynamic shape of the first platform wall and the set-back step of the second platform wall, and wherein the interspace has a uniform height defined along the entire width of the platform by a height of the set-back step.