Turbine blade and rotor

Abstract

A turbine blade with a blade root, each of which has two axial projections along a longitudinal axis with radial bearing surfaces for bearing against bearing surfaces of a groove of a turbine disc, wherein the blade root has a depression along a longitudinal axis, which depression extends, in particular, over at least half of the blade root in the direction of the longitudinal axis, and/or has a root projection at one end of the blade root, which root projection can make contact only with a bottom of a groove, wherein the root projection has, in particular, a cross section of at most 30% of the area of the bottom. A rotor having at least one rotor disc with at least one groove and at least one turbine blade of this type is provided.

Dependencies are inferred from the claim text.