FIELD: machine building.
SUBSTANCE: gas turbine blade contains wing with top located segment of a bandage tape that together with segments of the bandage tape of other blades of the same row creates a ring bandage tape limiting the hot gases channel of the gas turbine. The bandage tape segment is provided with upward boards to improve sealing from the hot gases channel passing along the edge; the boards are located on sides where the bandage tape segment is in contact with the adjacent segments. To minimise cooling in the boards zone they have made in them and parallel to them open grooves through which the cooling air supplied by the bandage tape segment leaves from inside the blade wing to space above the bandage tape segment.
EFFECT: invention ensures cooling of both the bandage tape segment, and its board, and reduces thermal stresses between them.
13 cl, 13 dwg
