UNMANNED AERIAL VEHICLE Russian patent published in 2017 - IPC B64C39/02 H02J7/00 

FIELD: aviation.

SUBSTANCE: an unmanned aerial vehicle comprises of a support frame (1), electric motors (2) with lifting rotors (3) attached to arms (4), electronic equipment, an autonomous system (10) of battery (9) charging. The charging system includes a winding (11) disposed on a magnetic core which is detachable and consists of two parts. The first stationary part (12) is U-shaped and installed above the center of mass of the small-sized multicopter above its rotors (3). The second part (13) of the magnetic core is formed as a rolling bar, the cross-sectional area of which is equal to the cross-sectional area of the first part of the magnetic core. The winding (11) of the magnetic core is connected to a converter (17) of alternating voltage into constant voltage, the output of which is connected to the charger (18) of the battery (9). The non-magnetic flexible tape (19), which length is equal to the length of the circumference inscribed in the window (20) of the magnetic core, with one end (21) is fastened inside the window (20) of the magnetic core at the second end (22) of the first part (12) of the magnetic core. The second end (23) of the tape (19) is secured to the second end (24) of the second part (13) of the magnetic core inside its window (20).

EFFECT: increased duration of autonomous operation of an unmanned aerial vehicle.

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