TURBINE OF GAS TURBINE ENGINE Russian patent published in 2010 - IPC F01D5/08 F02C7/12 

FIELD: engines and pumps.

SUBSTANCE: proposed turbine comprises first-stage disk with its front extension fitted on the shaft with the help of splined joint. Disk extension that makes an external member of the shaft, has front and rear ledges. Front and rear circular spaces are arranged ahead and behind of said splined joint, said spaces being formed by front and rear circular ribs made on disk extension. Front circular space inlet communicates, via channels arranged in disk extension front ledge, with cooling air feed chamber, while its outlet communicates, via splined joint gaps, with rear circular space. Rear circular space communicates, via channels arranged in disk extension rear ledge, with intershaft space.

EFFECT: higher reliability due to improved design of first stage disk splined joint cooling.

2 cl, 2 dwg