REDUCTION GEAR WITH SEPARATION OF TORQUE FOR ROTARY-WING AIRCRAFT WITH SYSTEM OF FORWARD TRACTION Russian patent published in 2009 - IPC B64D35/00 F16H37/06 

FIELD: aviation.

SUBSTANCE: inventions are related to variants of manufacture of reduction gears with separation of torque, mostly for rotary-wing aircraft. Reduction gear system according to the first version comprises inlet module, main module and module of forward traction. Main module is engaged with inlet module and comprises two main gears for coaxial counter-rotation around rotation axis of bearing screw. Module of forward traction is engaged with inlet module and comprises main reciprocal gear that rotates around rotation axis of transmission shaft, which is usually transverse to rotation axis of bearing screw. In reduction gear system according to second version inlet module has the first straight bevel gear engaged with the second straight bevel gear. The second straight bevel gear is engaged with the third straight bevel gear. The main module is engaged with inlet module. The main module gears are put in motion by the second straight bevel gear. Module of forward traction via forward gear is engaged with the third straight bevel gear of inlet module. In system of reduction gear according to the third version the main module is engaged with inlet module via inlet shaft, which is arranged with the possibility of rotation around rotation axis of inlet shaft. Module of forward traction is engaged with inlet module similar to other versions.

EFFECT: reduction gear weight and volume reduction, and also increased live load and space in cabin.

20 cl, 8 dwg