FIELD: engines and pumps.
SUBSTANCE: gas turbine engine comprises vaned wheel with hollow vanes cooled from inside by circulated air. Every vane is mounted on rotor disk periphery. Disk-labyrinth is jointed to rotor disk to make cooling air feed circuit communicating with air circulation chambers arranged in aforesaid vanes to feed guide air to vane feet jointed with aforesaid rotor disk. Circular lock flange is fitted between disk-labyrinth outer edge and rotor disk. Aforesaid flange comprises lock shoulder that makes outer circular catch receiving aforesaid disk-labyrinth outer edge and thrust shoulder (74) that makes inner circular catch that enters axial peripheral recess of the rotor disk. Lock flange comprises channels to feed air to vane feet.
EFFECT: ruling out disk-labyrinth deformation.
6 cl, 5 dwg
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