HIGH-SPEED AMPHIBIOUS ROTORCRAFT Russian patent published in 2017 - IPC B64C35/00 B64C27/22 

FIELD: aviation.

SUBSTANCE: high-speed amphibious rotorcraft (HARC) has a two-screw coaxial scheme with carrier screws, a power plant with engines transmitting torque through the main reducer and transmission shafts to the main rotors and propulsion screws in the annular channels, wings of the same size of the high-lying "tandem" scheme and retractable Wheeled chassis. The HARC is made using multi-mode aerodynamic control technology with a propulsion-steering system in the form of coaxial dome-and cup-shaped carrier screws (DCSCS) according to the scheme DCSCS-X2+2, which includes a lower and upper three-blade propellers above the convex profiled fairing, Reverse and straight V-shape of the root zone of the respective blades, and two traction screws in annular channels with controlled thrust vector located on the inner sections of the rear wing.

EFFECT: reducing the height of the main gearbox and the required power for pitch and roll control when hovering.

3 cl, 1 tbl, 1 dwg