ATTACHMENT, DRIVE AND COAXIAL HELICOPTER BLADE CONTROL ASSEMBLY Russian patent published in 2017 - IPC B64C27/14 B64D35/06 

FIELD: aviation.

SUBSTANCE: attachment, drive and coaxial helicopter blade control assembly comprises a main gearbox, lifting rotors, swashplates and swashplate control devices. The main gearbox housing is divided into three parts: the power part of the housing - a power plate which is fixed on the fuselage of the helicopter and to which the gearbox covers are attached from above and from below. A pipe support coaxial to the rotation axis of the lifting rotors is mounted to the power part of the main gearbox. At the upper end of the support, the upper lifting rotor is placed on the bearings, and the lower lifting rotor is located directly on the screw wheel shaft of the lower lifting rotor drive protruding beyond the gearbox. The support passes with a clearance inside the hollow shaft of the lower propeller, and the shaft of the upper lifting rotor drive passes inside the hollow support. The swashplate of the upper lifting rotor is located under the upper lifting rotor, and the swashplate of the lower lifting rotor is located above the lower lifting rotor.

EFFECT: increased reliability of the structure.

8 cl, 4 dwg