HIGH-SPEED HELICOPTER WITH PROPULSION-STEERING SYSTEM Russian patent published in 2017 - IPC B64C27/22 

FIELD: aviation.

SUBSTANCE: high-speed helicopter with a propulsion-steering system (HHPSS) contains a bearing propeller on the pylon and under it the propellers with a tiered arrangement in the annular ducts, installed on the rotary wing consoles, has two engines that transmit torque to the rotor, mounted forwardly deflected on the flight, and tractor rotors, creating a hovering lift and roll control, gas controlling jets. The HHPSS is made using the multi-mode aerodynamic control technology, providing steering screws to pitch, roll and course trim with reactive torque compensation, and a biplane scheme. The main rotor is made with rigid fastening of blades. On the support, installed coaxially inside the rotor shaft, an arrow-shaped trapezoidal wing (ATW) is mounted, forming with a forward-swept wing (FSW) a biplane scheme with high-lying wings of the X-shaped configuration.

EFFECT: increase in the weight return, reduction of the required power for yaw trim during hovering and improvement of transverse and longitudinal controllability.

2 cl, 1 dwg