HIGH-SPEED TURBOFAN COMBINED HELICOPTER Russian patent published in 2017 - IPC B64C27/22 B64C29/00 

FIELD: aviation.

SUBSTANCE: high-speed turbofan combined helicopter is designed according to the concept of propeller and jet thrust and is equipped with combined traction and lifting systems having a jet thrust with a thrust of different-sized propellers, directed along the axis of symmetry or perpendicular to the latter during VTL or hovering from TRTE with a controlled thrust vector together with thrust of two smaller propellers mounted on the V-shaped stabiliser consoles, or from TRTE together with the thrust of two larger main rotors. The rotational planes of blades of the larger main rotors are located between the biplane wings, forming the left and right trapezoidal slotted channels by inner sections, and fixed to the output shafts of console gearbox. Each gearbox is placed in overwing fairing on the tip of the lower wing and is provided with a hollow fixed support mounted coaxially inside the rotor shaft. The upper part of the support protruding from the shaft is fixed in the overwing fairing of the upper wing, forming a high-positioned biplane with wings of a closed structure, having a diamond-shaped configuration.

EFFECT: reducing the required power for longitudinal balancing, increasing the speed, height and range of flight.

3 cl, 1 tbl, 1 dwg