LOW PRESSURE TURBINE ROTOR FOR A GAS TURBINE ENGINE Russian patent published in 2023 - IPC F01D5/02 F16D1/06 

FIELD: aircraft engine construction.

SUBSTANCE: invention is related in particular to designs of rotors for a low-pressure turbine (LPT) of a gas turbine engine (GTE). A low-pressure turbine rotor of a gas turbine engine, comprising an intermediate shaft, a nose with a bearing placed on it, with holes made in the nose for supplying oil from the nozzle to the bearing, a blade disk connected to the nose, characterized in that the intermediate shaft is made of titanium, the nose and the intermediate shaft are joined and fixed to each other by radial pins, the radial pins are located in two parallel planes spaced apart in the axial direction, while the radial pins located in one plane are offset relative to the radial pins located in the other plane in the axial direction in this way so that the radial pins located in one plane are staggered relative to the pins located in another plane, the oil supply holes are made in one row, while the outlet part of the nozzle is located in the inner cavity of the nose. The oil supply holes are located under the axis of symmetry of the bearing.

EFFECT: significant reduction in labour costs for manufacturing the material part of the LPT rotor, an increase in life of rotor bearing and an increase in reliability of the engine as a whole.

2 cl, 1 dwg