TURBOMACHINE AND TORQUE TRANSMISSION SYSTEM FOR TURBOMACHINE Russian patent published in 2019 - IPC F01D25/20 F02C7/06 

FIELD: turbomachines.

SUBSTANCE: turbomachine comprises two rotary shafts and one lubrication unit comprising a pump with a housing accommodating a rotor driven by one of said shafts. Pump housing is rotated by another of said shafts so that actuation of pump depends on difference in shaft rotation speed. Shafts are engine shaft and fan shaft. Fan shaft is driven by the motor shaft by means of a reduction gearbox lubricated by the lubrication unit. Reduction gearbox has annular shape, and pump passes in axial direction through reduction gearbox and fan shaft. Pump housing is connected by grooves to one of said shafts. Pump rotor is connected with another of said shafts by means of grooves or connection means intended for connection at shaft rotation speed not exceeding preset shaft rotation speed. Another invention of the group relates to a torque transmission system for said turbomachine.

EFFECT: group of inventions allows reducing the dimensions of the assembly including the reduction gearbox and pump, as well as providing lubrication of the reduction gearbox in case of fan autorotation.

9 cl, 6 dwg