METHOD OF OPERATION OF LIQUID-PROPELLANT ENGINE WITH AFTERBURNER Russian patent published in 2024 - IPC F02K9/82 

FIELD: rocketry.

SUBSTANCE: method of operation of a liquid-propellant rocket engine with afterburner after the combustion chamber reaches a stable combustion mode is carried out by opening valves in the afterburner supply lines to supply fuel components under pressure to its fuel injectors, ignition of the supplied components in the afterburner is provided by the temperature of the gases flowing from the critical part of the nozzle, as a result of which there is an increase in temperature and speed of gases in the nozzle behind the afterburner, wherein afterburner operates in constant mass flow rate of fuel components, which leads to constantly increasing value of specific pulse until combustion chamber is switched off, or operates in an economical mode of maintaining an increased constant value of the specific pulse due to throttling in the fuel components supply lines for continuous reduction of second flow through injectors in proportion to degree of reduction of atmospheric pressure until the combustion chamber is switched off.

EFFECT: invention provides increased specific impulse of the engine.

1 cl, 1 dwg