FIELD: cooling.
SUBSTANCE: cooled turbine blade (440) has a base (442) and an airfoil (441), wherein the base comprises inlets (481) for the cooling air and channels (483), wherein the aerodynamic profile comprises a multibend heat exchange path (470) starting at the base and ending in the area of the outlet (471) for the cooling air at the rear edge (447) of the airfoil. The airfoil also comprises panelling (460) covering the edge wall (461) and the inner spar (462). Cooling air of lower pressure is therefore supplied.
EFFECT: ensured cooling of turbine blades.
10 cl, 13 dwg
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