Transmits power from the turbine shaft to the output shaft at a reduced rate of rotary speed.

Main requirements:

• operation at the required transmission ratio
• reliability
• minimum weight
• minimum size
• simple design
• long service life

Our experience: The VR-80 gearbox for Ка-50 and Ka-52 helicopters features separate intermediate transmissions to simplify maintenance and improve operation. It can be easily repaired both by the manufacturer and on-site.  Aircraft equipped with the VR-80 gearbox can continue the flight after the failure of one engine, while in the event both engines fail the aircraft can land in the autorotation mode. The popular VR-14 gearbox for civil and military helicopters (Mi-8АМТ, МI-8МТV, Мi-17 and its modifications) is used in 80 countries of the world. It is a highly dependable unit with a long service life.

Further improvements:  To use modern materials and technologies, particularly powder metallurgy, for manufacturing gearbox cases and rotating parts in order to reduce their weight and extend service life.