UNMANNED TRANSONIC AIRCRAFT-HELICOPTER Russian patent published in 2020 - IPC B64C27/24 

FIELD: aviation.

SUBSTANCE: invention relates to the field of aircraft engineering, in particular to designs of reactive convertible rotary-wing aircrafts. Unmanned transonic aircraft-helicopter (UTAH) is made on two-screw coaxial-bearing scheme (TCBS), has in power plant (PP) engine, transmitting torque through main reduction gear and system of transmission shafts to rotary wings (RW), tail assembly and three-support retractable wheel chassis. TCBS comprises low-lying wing asymmetrically variable sweep on rotary hinge of fuselage and on its pylon two-bladed rotary wings, fodder nacelle with free power turbines driving RW and portable turbo-blowers, which create vertical and short takeoff/landing of lifting and sustaining tie-rods with working, autorotating RW or their fixed blades-wings asymmetrically variable sweep. TCBS is equipped with low-lying wing asymmetrically variable sweep, mounted from below fuselage by means of rotary hinge.

EFFECT: reduction of vibrations, exclusion of resonance of autorutating coaxial RW, possibility of transformation into flight configuration of transonic aircraft with fixed blades-wings of RW.

5 cl, 1 tbl, 3 dwg