TURBINE BLADE, TURBINE DISC AND TURBO MACHINE Russian patent published in 2018 - IPC F01D5/30 F01D25/28 

FIELD: machine building.

SUBSTANCE: turbine blade contains a blade extending above a platform and a foot passing under said platform. Said foot of the turbine blade has the form of a radially extending leg, made of a composite material and comprises a first planar or cylindrical side oriented in an axial direction. Further, the direction of the generatrices of the first planar or cylindrical sides is oriented in the direction of the said platform so as to allow the sliding of a clamping piece over the first flat or cylindrical sides under the action of centrifugal force that acts on the turbine blade during operation on the turbomachine. Said radially extending leg comprises, at its lower end, a protrusion that forms the end of the foot and forms a radial reference point for interacting with the turbine blade holding member on the turbine drive disk. This radially extending leg of the foot is completely disposed on the side of the protrusion relating to the first planar or cylindrical side. Other inventions of the group relate to the disk of the turbine impeller, which comprises, at the periphery, a means for securing the above turbine blade, and also to a turbomachine comprising said impeller disc.

EFFECT: system automatically makes up for the amounts of play between the blade and the disc.

11 cl, 2 dwg