MULTIROTOR CONVERTIBLE PILOTLESS HELICOPTER Russian patent published in 2015 - IPC B64C39/02 B64C27/28 B64C37/00 

FIELD: aircraft engineering.

SUBSTANCE: multirotor convertible drone helicopter is equipped with the system of distributed thrust of different-size rotors in X2+4 configuration, two large and smaller rotors and two rotary push propellers arranged at X-shape wing panels and ends of long wing nacelles, respectively. Helicopter represents a monoplane of two-beam configuration with high-wing, short fuselage, power plant including engine and read reduction gearbox with rear dual concentric rotors to allow horizontal thrust and vertical or inclined thrust corresponding to deflection between two-keel rudder and three-leg undercarriage. Helicopter different-level X-like sweep wings have end chords located at the front and rear relative to their root chords. Rotor system comprises larger rotors with their reduction gearboxes mounted at first wings pylons and two smaller rotors arranged with their reduction gearboxes at second wing tips. Helicopter allows conversion of its flight configuration from six-rotor one into rotorcraft configuration or winged autogiro with single-rotor propulsion.

EFFECT: better weight efficiency, better transverse and longitudinal controllability.

2 cl, 1 dwg