METHOD FOR FORCING TWO-CIRCUIT EJECTOR PULSATING AIR-JET ENGINE AND FORCED TWO-CIRCUIT EJECTOR PULSATING AIR-JET ENGINE Russian patent published in 2021 - IPC F02K7/06 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to aircraft engines and can be used as an engine of small unmanned aircraft, such as, for example, unmanned reconnaissance aircraft, flying targets. The method involves purging the combustion chamber with a fuel-air mixture from mixers and air from the aerodynamic valve of the second circuit, forming an air jet blowing of the combustion zone, subsequent ignition and explosion with the release of combustion products through the resonator pipe, mixers and an aerodynamic valve, while the fuel supply during engine operation is carried out simultaneously in two circuits of the TCEPAJE, followed by the organization of intensive mixing in the combustion chamber by jet blowing with a fuel-air mixture of the combustion zone with the formation of annular vortices. A distinctive feature is that a cavity is arranged in the combustion chamber, in which the preheating of the fuel-air mixture is carried out and the combustion process is switched to the detonation mode, and at the exit from the organized cavity, the combustion products are inhibited. The TCEPAJE contains, in particular, a combustion chamber, an inlet system from the first inlet pipe-mixer and the second intake pipe-mixer, aerodynamic valves, a fuel collector and a fuel supply nozzle. A distinctive feature is that the outlet section of the second inlet pipe-mixer is made elongated and partially placed directly in the volume of the combustion chamber in such a way that a cylindrical cavity is formed between it, the front wall of the combustion chamber and its bottom part, in which the Shchelkin spiral is installed. The fuel supply nozzle can be placed directly in the cylindrical cavity formed in the combustion chamber.

EFFECT: invention achieves an increase in thermodynamic efficiency.

3 cl, 2 dwg