DEVICE TO DRIVE ROTORCRAFT TWIN FIRST AND SECOND ROTORS Russian patent published in 2013 - IPC B64C27/12 

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering, particularly, to rotorcraft rotor drives. Drive D is designed to drive rotorcraft twin rotors 2, 3. Said drive incorporates coupler for first and second primary transfer shafts 5, 6 and first and second primary gearboxes 7, 8, to time first and second power transfer mechanisms 74, 84. First primary gearbox 7 comprises first power adder 73 engaged, first, with first power transfer mechanism 74, and, second, engaged with first power transfer shaft 5 and second power transfer shaft 6. Second primary gearbox 8 comprises second power adder 83 engaged, first, with second power transfer mechanism 74, and, second, engaged with first power transfer shaft 5 and second power transfer shaft 6.

EFFECT: higher safety and reliability.

15 cl, 7 dwg