UNMANNED CONVERTIPLANE WITH AN ARCHED WING Russian patent published in 2018 - IPC B64C27/28 B64C37/00 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to the field of aviation, in particular to the designs of unmanned hybrid convertiplanes. Unmanned convertiplane with an arched wing (UCAW) contains two nacelles on the wing consoles, in the front and rear ends of which by two propellers are mounted, has a tail unit, power plant (PP) engines, transmitting power to rotary screws with transmission shafts, creating a horizontal and vertical thrust, and a three-wheeled chassis. UCAW is a tandem high-wing aircraft, which each split wing is made of two internal sections, mounted in a ledge. At that, the inner sections of the wing are respectively made in the form of a semi-annular channel, at the leading edge equipped with an internal shaped stiffener and having an aerodynamic profile, which chord is 3/4 of the wing MAC, and in the form of an all-swing flap having a chord of 1/5 of the wing MAC and a gap between the edges of the sections equal to 1/20 of the wing MAC. Each flap is equipped with a nacelle with a reducer of the pulling propeller, mounted above the shoulders of the flap.

EFFECT: providing an increase in aerodynamic quality and increased maneuverability in transient maneuvers and at low flight speeds.

8 cl, 4 dwg, 1 tbl