MULTI-PURPOSE HELICOPTER AND HELICOPTER FUEL SYSTEM Russian patent published in 2021 - IPC B64C27/04 B64D37/00 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to the field of aviation, in particular to helicopter designs. A multi-purpose helicopter contains a fuselage (1), a nacelle (9) with a main gearbox (25), engines (27) with exhaust devices (28), a coaxial main rotor, a wheeled landing gear, two tail beams (6) with a tail unit (7, 8), a control system, a hydraulic system. The fuselage (1) is equipped with suspension units of the transport module, cargo platform, external cargo suspension, winch. Inside the fuselage (1) there is a fuel system (22), while on the right side of the fuselage (1) there is a filler neck (45), a pressure refueling nozzle (46) and a safety valve (44). In addition, there are two hatches (47) on the fuselage (1), closed with covers (48). The helicopter's fuel system contains three fuel tanks located in the fuselage compartments (1). The inter-tank connections, overflow pipes (43) and the connection points of the tanks (41, 42) with other subsystems and the fuselage (1) are equipped with non-destructive elongating elements, part of the fuel system pipelines are located inside the fuel tanks (41 and 42).

EFFECT: increased safety of performing transport operations is achieved.

10 cl, 9 dwg