LIQUID ROCKET ENGINE WITH ACCESSOR Russian patent published in 2023 - IPC F02K9/82 

FIELD: rocketry.

SUBSTANCE: invention relates to the field of rocketry. Liquid propellant rocket engine with afterburner, made according to a closed scheme with full gasification of components, containing two turbopump units, each of which contains a high pressure pump, sitting on the same shaft with a gas generator, so that the fuel passes through the reduction gas generator, and the oxidizer passes through the oxidizing gas generator, a combustion chamber for burning gaseous components using fuel injectors in the combustion chamber head, a nozzle passing after the critical section into an expanding part, a cooling system for the combustion chamber and nozzles with a fuel component, an engine purge system before starting, an engine start system, an engine operation control system, when In this case, the engine is equipped with an afterburner device created in the expanding part of the nozzle behind the critical section, consisting of an annular belt that performs a local stepwise increase in the diameter of the nozzle, fuel injectors installed along the perimeter of the annular belt and two pipes pipelines, through which part of the gasified components of the fuel and oxidizer is supplied to the fuel injectors, the ignition of the supplied components in the afterburner device is ensured by the high temperature of gases flowing from the critical part of the nozzle, resulting in an increase in temperature and gas velocity in the nozzle behind the afterburner device, and to reduce gas pressure at the nozzle exit, the length of the nozzle is increased.

EFFECT: invention provides for an increase in the temperature and velocity of gases in the nozzle, which leads to an increase in engine thrust and, as a result, to an increase in its efficiency.

1 cl, 1 dwg