LIQUID-PROPELLANT ENGINE Russian patent published in 2010 - IPC F02K9/64 

FIELD: engines and pumps.

SUBSTANCE: invention can be used during development of alternator-free liquid propellant engines operating on cryogenic components, e.g. oxygen and hydrogen. Liquid-propellant engine includes dish-shaped nozzle, annular combustion chamber with mixing head, which is located axisymmetrically inside the nozzle, and fuel and oxidiser supply headers. Combustion chamber is provided with shaped internal wall and located along longitudinal chamber axis, and inside combustion chamber there installed is cooled cylinder, one edge of which is connected to mixing head, and the other one - to central nozzle part, and it forms together with shaped internal wall of combustion chamber an annular critical section. Inside annular combustion chamber, after the mixing head there installed axisymmetrically and with possibility of movement in mutually perpendicular planes is chamber of liquid-propellant engine with a converging-diverging nozzle; at that, nozzle cavity of this chamber opens to dish-shaped nozzle cavity.

EFFECT: simplifying control of thrust vector of engine with dish-shaped nozzle, simplifying the construction of engine attach fitting and improving mass-and-dimensions engine characteristics.

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