DOUBLE-FLOW EJECTOR INTERMITTENT AIR-JET ENGINE Russian patent published in 2025 - IPC F02K7/06 F02K7/20 

FIELD: engines.

SUBSTANCE: invention relates to aircraft engineering, particularly to air jet engines, and can be used in intermittent-cycle air jet engines of unmanned aerial vehicles. Double-flow ejector intermittent-cycle air-jet engine contains combustion chamber, resonance pipe, a second inlet mixing pipe with a lug mechanical valve, inside of which a first inlet mixing pipe with an aerodynamic valve is coaxially installed, forming a cavity therebetween, wherein second inlet pipe is secured to outlet end of combustion chamber front end wall, gas feed nozzle, gas heating coil and spark plug. Guide vanes of aerodynamic profile are installed radially in the cavity and rigidly fixed at the specified angle relative to longitudinal axis to inner wall of the second inlet mixing pipe and to outer wall of the first mixing pipe.

EFFECT: increasing the combustion efficiency of the fuel-air mixture by intensifying the mixture formation process through air flow circulation.

1 cl, 1 dwg