FIELD: aviation.
SUBSTANCE: invention relates to the field of aviation, in particular to designs of rotary-wing aircrafts. A rotary-wing aircraft contains a fuselage, a front wing with propellers mounted at its ends, which are tilted forward in flight, and a rear wing. Behind the rear wing, there is a cross beam with propellers mounted at its ends. At the same time, axes of rotation of front wing screws and screws mounted on the cross beam have a wedging angle of the axis of rotation forward in flight from 10 to 45° and a wedging angle around the longitudinal axis of right-to-right, left-to-left from 5 to 50° from the vertical, and the rear wing is placed on the fuselage with a height offset up and back relatively to the front wing, and the angle of installation of wings is from 2 to 10°.
EFFECT: increase in the resistance to air disturbances, energy efficiency, reliability in operation is achieved.
1 cl, 3 dwg, 1 tbl
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