METHOD OF REDUCING WEIGHT OF OXYGEN-HYDROGEN LIQUID-PROPELLANT ENGINE Russian patent published in 2025 - IPC F02K9/00 

FIELD: engines.

SUBSTANCE: invention relates to power plants, namely, to liquid-propellant rocket engines (LPE). Method consists in the fact that at the design stage the total length of the engine is determined, the length of the chamber is determined, the length of the non-disintegrated part of the liquid of the oxidizer jet is determined for coaxial-jet nozzles with a round outlet section and determining the degree of perfection of mixture formation, which is provided by this fuel components supply scheme. Length of the jet of the non-disintegrated part of the liquid of the coaxial-jet nozzles is reduced by profiling their outlet section from a round to a three-beam one. Determining the reduction in the length of the jet of the non-disintegrated part of the liquid of said nozzles while maintaining the degree of perfection of the mixture formation and the length of the combustion chamber is reduced by the length of not more than the obtained value of reducing the length of the jet of the non-disintegrated part of the liquid, the length of the entire chamber and elements of the pneumatic hydraulic circuit of the said engine, depending on it.

EFFECT: reduction of the weight of an oxygen-hydrogen liquid rocket engine with coaxial-jet nozzles.

1 cl, 5 dwg