WORKING BLADE OF GAS TURBINE ENGINE WITH COOLING CIRCUIT CONTAINING DOUBLE ROW OF OUTLET SLOTS Russian patent published in 2023 - IPC F01D5/18 

FIELD: gas turbine engine.

SUBSTANCE: invention is related to a working blade (2) of a gas turbine engine, containing at least one cooling circuit, containing at least one cavity (16; 16a, 16b) extending in the radial direction between the leg and the top, at least one air inlet hole, located at the radial end of the cavity, a plurality of first outlet slits (18) configured to be open along the rear edge between the leg and the apex, and a plurality of second outlet slits (20) distinct from the first outlet slits and provided along the rear edge (14) between the leg and the apex wherein the second outlet slits (20) are axially displaced upstream relative to the first outlet slits (18), and each of the first outlet slits is radially displaced relative to each of the second outlet slits without overlap between the first and second outlet slits.

EFFECT: this radially offset arrangement of the slots of two rows without overlapping between them makes it possible to increase the cooling efficiency, in particular for cooling the ribs of the slots located downstream.

10 cl, 4 dwg