FIELD: machine building.
SUBSTANCE: turbine disc includes an annular fastening flange rigidly attached to a radial annular part of a journal by means of bolts. Bolts subsequently pass through fastening holes made in a radial annular fastening flange of the turbine disc and in the radial annular part of the journal. Radial annular part of the journal includes through holes for air circulation between the journal inlet and outlet. Holes are made between fastening holes of the journal. Another object of this invention is a cooling circuit of the turbine disc in a gas turbine engine, which includes a removal channel at the turbine disc outlet, which passes through the above described holes.
EFFECT: invention allows passage of ventilation air between the journal inlet and outlet.
10 cl, 6 dwg
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