FAST-SPEED COMBINED HELICOPTER Russian patent published in 2017 - IPC B64C27/22 

FIELD: transportation, aviation.

SUBSTANCE: invention relates to the field of aviation equipment, in particular, to combined helicopter designs. The fast-speed combined helicopter (FSCH) is made in accordance with a single-propeller lifting arrangement with an antitorque propeller, comprises a propulsion package with one engine, transmitting torque via the main gear and a system of connecting drive shafts to a lifting propeller mounted as deflected along the flight, to traction and antitorque propellers, installed at the ends of accordingly the extended tail fairing and the left cantilever of the T-shaped tail plane. The FSCH is made in accordance with the double-decker arrangement and technology of multimode aerodynamic control providing with different-sized propellers supermaneuverability and balance by pitch trim, heel and course with compensation of reactive torque. The lifting propeller is arranged without control of cyclic pitch and with stiff fixation of vanes. On the support installed coaxially inside the lifting propeller shaft, there is a boom-shaped upper wing fixed, forming the double-decker arrangement with the lower straight swept-forward wing (SFW).

EFFECT: invention provides for reduced required power for rudder trim while hovering and improved transverse and longitudinal control.

2 cl, 2 dwg