MULTI-PURPOSE MULTI-ROTOR HIGH-SPEED HELICOPTER Russian patent published in 2017 - IPC B64C27/22 

FIELD: aviation.

SUBSTANCE: multi-purpose multi-rotor high-speed helicopter (MMHH) has a longitudinal-transverse scheme with closely spaced intersecting rotors and a power unit (PU) with an engine transmitting torque through the main reducer and extension shafts to the main rotors. The MMHH is made according to the longitudinal-transverse scheme and the concept of intersecting cup-shaped main rotors (ICMR) in the system ICMR-X⋅(2×2)+2, including the front and rear pair of transverse rotors mounted respectively at the ends of the V-shaped fairings and the ends of the V-shaped vertical tail unit and the corresponding V-shaped reducers located on the output shafts and two feathering-reversing propelling screws in the rear annular channels, brought outside the leading edge of the high-placed stabiliser, and creating an in-flight power for high-speed flight. Each cup-shaped main rotor has blades fixed perpendicular to the conical side surface of the cup-shaped sleeve of its rotor forming the cone of the main rotor and made in the form of a corresponding truncated cone.

EFFECT: reduction of the required power for pitch, roll and yaw control when hovering, increasing the speed and range of flight.

4 cl, 1 dwg, 1 tbl