HEAVY CONVERTIBLE ELECTRIC DRONE Russian patent published in 2014 - IPC B64C27/28 B64C37/00 

FIELD: transport.

SUBSTANCE: invention relates to drones, namely, to VTOL drone. Electric convertible drone comprises airframe of composite coal-plastic with front fins and two-keel tail unit. The latter is jointed to high wing at spaced apart beams. Stabiliser supports are arranged on outer side of said keels. Power plant engines transmit power via main propeller gear and transmission shafts to rotary push and pull screws. The latter are arranged at fuselage nose and tail to allow horizontal and vertical thrust. Three-leg undercarriage incorporates the nose extra support. This convertible plane features equal-size wings in canard configuration and tandem arrangement of three-screw modules. Said modules can run at various angles of their deflection in vertical plane. Hybrid power plant incorporates LH and RH front and rear engine nacelles with motors. The latter are coupled with appropriate push propellers and two front and one rear hybrid engine nacelles. Every said nacelle houses, apart from pull propeller, the inverting motor generator.

EFFECT: better efficiency, perfected design, improved transverse and course stability and roll and heading controllability.

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