SEALED FRONT CHAMBER DURING MODULAR DISMANTLING OF TURBOJET WITH REDUCTION GEAR Russian patent published in 2018 - IPC F01D25/18 

FIELD: non-displacement compressors and pumps.

SUBSTANCE: turbofan engine comprising a fan driven, via a fan shaft supported by at least two first bearings, by a turbine shaft supported by at least one second bearing comprising a stationary ring and a movable ring, said turbine shaft driving said fan shaft through a device for reducing the speed of rotation, said device for reducing the speed of rotation and said first and second bearings being housed in a lubrication enclosure in which the shell comprises stationary portions and movable portions connected to one another by sealing means, said speed reducing device comprising an inducer shaped so as to receive the torque transmitted by said turbine shaft via driving means connected to said movable ring, characterised in that the lubrication enclosure forms a coaxial ring with the turbine shaft, and said driving means comprise a girth gear which is part of the movable sealing walls of the shell of the lubrication enclosure.

EFFECT: technical result: provision of hermetic separation of modules.

10 cl, 5 dwg