UNMANNED HIGH-SPEED HELICOPTER-AIRPLANE Russian patent published in 2018 - IPC B64C27/24 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to the field of aircraft engineering and can be used in the design of unmanned aerial vehicles. Unmanned high-speed helicopter-airplane (UHSHA) is equipped with a two-screw coaxial platform (TSCP), including above and below the upper vertically spaced central parts of the C-shaped at the side view of the fuselage, a pair with opposite and free rotation of single-blade large rotors (R) with shaped counterweights, providing the creation of vertical traction only for vertical and short take-off/landing (VT and STL), and a propulsive-fan system (PFS) containing a two-row counter-rotating rotary fan mounted inside the tail boom, for the creation of a thrust in the case of high-speed horizontal flight with fixed R blades. Wing of the reverse sweep has consoles with backward constriction and forms X-shaped sweep at a negative angle χ=-23° sweep together with fixed R blades-wings at top view.

EFFECT: provides a reduction in vibration and the elimination of the emergence of resonance with the use of stopped and not cleaned in flight wing blades, simplification of longitudinal-lateral controllability.

4 cl, 1 dwg, 1 tbl