HELICOPTER FUSELAGE Russian patent published in 2006 - IPC B64C27/04 B64C1/00 B64D7/06 

FIELD: aviation.

SUBSTANCE: proposed helicopter has the following members which are interconnected together: fore section including framework of crew cabin, central and tail sections consisting of frames, flat panels and skin forming the primary skeleton of fuselage where main gearbox of main rotor, engines, wing panels and turret gun mount with ammunition are mounted. Central part of fuselage is made from panels forming two rectangular compartments in form of torsion boxes. Set of longitudinal and transverse beams forms center-wing section together with skin where attachment units for securing the wing panels, rotor main gearbox and engine are mounted. Compartments are interconnected by means of additional panels; one of additional side panels is monolithic and is provided with units for attachment of turret gun mount; other additional side panel is provided with ports to give access to inter-compartment space. One compartment is connected with crew cabin skeleton by means of adapter members; crew member skeleton is made in two versions: for one or two pilots; other compartment is connected with skeleton of tail fuselage by means of intermediate compartment. Adapter members are made in form of longitudinal beams which are changeable for each version of cabin. Fuel tank is mounted in between the torsion box-like compartments; inter-compartment space includes set of transverse panels forming rectangular boxes with internal form-shaping members of side walls made from ammunition belt in form of guides.

EFFECT: simplified construction of fuselage and enhanced balancing of helicopter.

3 cl, 9 dwg