FIELD: transport engineering. SUBSTANCE: during operation of turbine, cooling air flows to area of fin 1, then it flows through passages 4, cools blade and is discharged from it. Orientation of ribs 2 and 3, introduction of radial rib 5 and V-shaped partitions provide for efficient distribution of coolant flows in passages of blade. EFFECT: efficient distribution of coolant flows in passages of blade. 2 dwg
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