POWER PLANT OF A SINGLE-ROTOR HELICOPTER Russian patent published in 2022 - IPC F02C3/10 B64C27/06 B64C27/12 

FIELD: aviation.

SUBSTANCE: invention relates to the field of aviation, in particular to the structures of power plants for high-speed and unmanned helicopters. The power plant of a single-rotor helicopter contains engines equipped with gas generating units (1), a free turbine (6). Gas generating units (1) of the engines are connected to the first stage ejector (2), which turns into an annular toroidal receiver (3) fixed on the fuselage, on the sides of which there are bypass valves (4). Above the receiver there is an annular shut-off device (5) for the air duct of the free turbine (6). The free turbine (6) contains a fan (15), which has a common shaft with the rotor (17). The adjustable second stage ejector nozzle (7) passes to the jet nozzle (18) and gas-dynamic rudders (8) in the aft fuselage. An electric generator (9), a hydraulic pump (10) and a drive box (11) are fixed in the central part of the fuselage. A heat exchanger (12) of the engine oil system and a heat exchanger (13) of the oil system of a free turbine (6), respectively, are located in front and behind with respect to the annular receiver (3), each of which is connected to the purge channels (14).

EFFECT: increased safety of helicopter flight on descent, increased reliability of the aircraft, increased efficiency of the propulsive thrust system.

2 cl, 2 dwg