HELICOPTER Russian patent published in 2020 - IPC B64C27/10 B64C27/22 B64D27/14 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft engineering, particularly, to transport and combat helicopters. Helicopter comprises fuselage with bottom and tail, two coaxial screws on concentrically arranged shafts connected via reduction gear with gas turbine engine, having air intake, compressor, combustion chamber, turbine and nozzle. Two-circuit gas turbine engine includes a birotating gas generator comprising a birotating compressor and a birotating turbine connected by two shafts, which is installed inside the streamlined axiosymmetrical casing with formation of the second circuit with an external air intake and an external nozzle. Before gas generator there is a reduction gear with output shafts connected with screws. Between gas generator and screws fan is made, at that fan rotor is arranged on outer output shaft while, inside said axiosymmetrical casing, fan stator with an input guide vane in the fuselage opening is made at its top. Between a turbine and a nozzle of a gas turbine engine, an afterburner is made.

EFFECT: safe landing of helicopter with destruction of propeller.

9 cl, 12 dwg