FIELD: aeronautical engineering and rocketry; vertical or short take-off and landing flying vehicles and devices for thrust vector control. SUBSTANCE: power plant includes cruise engine for flight in cruise mode and pure lifting engine used for take-off and landing, as well as for control of thrust vector in the course of flight in single unit with the pure lifting engine located after the cruise engine in way of flight. The supersonic nozzle of cruise engine is provided with asymmetrical, for example, with stepped exit section. Located on its asymmetrical portion are nozzles of pure lifting engine with transversal blowing-out of jets into incoming flow from symmetrical portion of cruise engine nozzle. Gas from combustion chamber in cruise engine is accelerated in symmetrical section of supersonic nozzle and escapes to asymmetrical section. Jets escaping through nozzles of pure lifting engine flow in transversal direction relative to jet escaping from cruise engine. Shock waves and zone with increased static pressure on wall of asymmetrical section of cruise engine nozzle are formed in front of jets of pure lifting engine as before an obstacle. Direction of thrust force of pure lifting engine coincides with direction of pressure force on nozzle wall, i.e. control load is increased by 2.5 times in optimal versions. Device may be used for vertical or short take-off and landing flying vehicles, in thrust vector control systems of flying vehicles, in ground-effect machines, as well as in back-pack systems both on ground and in space walks. EFFECT: increased control forces and thrust of power plant due to use of kinetic energy of jets escaping from cruise and pure lifting engines. 2 cl, 6 dwg
