LIGHTWEIGHT UNMANNED AERIAL VEHICLE OF HELICOPTER TYPE Russian patent published in 2020 - IPC B64C39/02 B64C27/10 B64C15/02 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft engineering, particularly, to small-size unmanned aerial vehicles. Helicopter-type unmanned aerial vehicle comprises a cylindrical body, in the central part of which along its symmetry axis there is a power plant with two coaxial rotors of opposite rotation, fixed on electric motor shafts, several control blades are located inside the housing in the zone of action of air flow from propellers and fixed on shafts of corresponding servo drives. Number of blades and corresponding servo drives is equal to three. Each blade is shaped multi-piece consists of two or more inserted rigid stiff strips, curvilinear surfaces of which correspond to side surfaces of elliptical cylinders, forming straight lines of which at neutral position of servo drives have vertical direction. Axis of rotation of each servo drive lies in the middle horizontal secant plane of the blade and coincides with axes of its ellipses-sections.

EFFECT: reduced weight of device and reduced power consumption.

1 cl, 5 dwg