LIQUID ROCKET ENGINE WITH AFTERBURNING Russian patent published in 2022 - IPC F02K9/48 

FIELD: rocket technology.

SUBSTANCE: invention relates to rocket technology. A liquid-propellant rocket engine with afterburning, containing a gas generator, a turbopump unit with a turbine and pumps, oxidizer and fuel inlet lines, a chamber with a nozzle and a mixing head connected by a gas conduit to the after-turbine cavity of the turbopump unit, equipped with a cooling path for the outlet section of the nozzle connected to the outlet by means of manifolds and a pipeline with a cavity of the mixing head, and an inlet - a line with a chamber cooling path and a minimum nozzle cross section connected to the outlet pipe of the pump of the component missing in the gas generator, while the turbopump unit is equipped with a drive, while between the cavity of the mixing head of the component missing in the gas generator and the pipeline at the outlet cooling path of the outlet section of the nozzle is connected to it with its input, and the output with the cavity of the mixing head, equipped with a booster pump. The drives of the turbopump unit and booster pump are made in the form of rotors and are kinematically connected, and the housing of the latter is docked to the housing of the turbopump unit. The booster pump is made with a bypass line connected by its ends to the inlet and outlet of the booster pump with a start-cut-off valve installed on it.

EFFECT: invention provides for a reduction in the mass of the chamber and liquid-propellant rocket engine with afterburning while providing cooling of the combustion chamber and nozzle.

3 cl, 4 dwg