DEVICE FOR TRANSFERRING OIL BETWEEN TWO COORDINATE SYSTEMS ROTATING RELATIVE TO EACH OTHER AND PROPELLER TURBOMACHINE FOR AIRCRAFT WITH SUCH DEVICE Russian patent published in 2018 - IPC F02C7/06 F01M11/02 

FIELD: machine building.

SUBSTANCE: invention relates to a device for transferring oil between two coordinate systems rotating relative to each other and in particular, but not exclusively, between a static housing and a speed reducing device or gearbox of a gas turbine engine with twin reverse rotation propellers. Invention also relates to a gas turbine engine comprising said oil transfer device. Device (20) comprises two concentric rings, outer ring (22) and inner ring (23), one of which is connected to an oil supply from one of the coordinate systems, and the other ring being connected to the other coordinate, the oil flowing between said rings, and bearings between the rings in order to change coordinate systems between the two rings. According to the invention, device (20) further comprises flexible means (31) forming a shock absorber, provided between a first of said rings and intermediate ring (41) that is separated from a second of said rings by said bearings (25), said flexible means (31) defining deformable sealed chamber (32) in which oil travels between the two coordinate systems.

EFFECT: invention compensates for displacements, in particular radial and angular displacements, which allows to maintain the alignment between the two coordinate systems.

10 cl, 4 dwg