HELICOPTER Russian patent published in 2019 - IPC B64C27/04 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft engineering, particularly, to 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. Gas-turbine engine is made birotatory, containing birotatory compressor and birotatory turbine and installed vertically in helicopter center of mass inside streamlined axisymmetric casing with formation of external circuit with external air intake and external nozzle. On the fuselage bottom the safety platform is made, which has vertical holes for arrangement of the gas turbine engine nozzle. Inner cavity of safety platform is filled with damping material. Damping material can be a honeycomb structure or metal rubber.

EFFECT: safe landing at destruction of propeller.

10 cl, 12 dwg