PULSATING DETONATION JET ENGINE Russian patent published in 2021 - IPC F02K7/04 

FIELD: jet engines.

SUBSTANCE: invention relates to jet engines, in particular to pulsating detonation jet engines. The engine has a combustion chamber made in the form of a detonation resonator with an outlet to the exhaust nozzle. The resonator is an aspherical reflector symmetrical about the motor axis. The engine uses gaseous fuel and gaseous oxidizer and a single-stage combustion process. In the case of using hydrocarbon fuel, the fuel path has a pyrolysis chamber. Pyrolysis is achieved by contacting the fuel flow with the heated rear side of the specified reflector. The mixture of fuel and oxidizer is fed into the combustion chamber through an annular supersonic injection system. To initiate detonation, these engines may have a knock initiator in the form of a tube muffled at the distal end and open at the end inserted into the combustion chamber and located along the axis of the engine. Detonation products flowing out through the exhaust nozzle create thrust, pushing the engine in the opposite direction.

EFFECT: such a design of a pulsating detonation jet engine is simple, reliable and allows achieving high efficiency of generation of thrust-driving force by maintaining a cyclic resonant detonation at a frequency of about 10 kHz.

20 cl, 4 dwg