FIELD: transport.
SUBSTANCE: invention relates to aircraft engineering, particularly, to rotorcraft rotors. Rotorcraft (1) is equipped with rotor (2) and at least one primary reduction gearbox (5) to drive said rotor (2). Said rotorcraft (1) comprises first and second main engine (11) and (12) to drive said primary reduction gearbox (5). Note here that rotorcraft (1) is provided with the main control system (15) for control over said engines (11, 12) by a variable preset magnitude. Extra engine (21) also can drive said primary gearbox (5). Note here that said rotorcraft (1) incorporates auxiliary control system (25) for control over said extra engine (21) by constant preset magnitude independent on said main control system (15).
EFFECT: hovering at one engine failed.
21 cl, 6 dwg
