FIELD: engines and pumps.
SUBSTANCE: gas turbine vane comprises body, root and head. Vane root comprises front edge and air cooling channel confined by wall on vane pressure and suction sides and running along said front edge inside said body. Said channel is also confined by separating wall running from that on pressure side and that on suction side, and is provided with outlet hole made in vane outlet hole zone. Hole shape is similar to that of cooling air channel cross section. Outlet hole cross section area is smaller than that of cooling air channel. Distance A from outlet hole edge to outer edge of vane body in vane body front edge zone makes 138-162 % of vane body wall local thickness (δ).
EFFECT: equalised heat transfer.
14 cl, 5 dwg
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