ROLL CONTROL LIQUID-PROPELLANT ENGINE Russian patent published in 2024 - IPC F02K9/42 

FIELD: rocket engine building.

SUBSTANCE: liquid-propellant engine of roll control contains an uncooled cylindrical combustion chamber, at the ends of which covers are fixed, mixer arranged on combustion chamber axis and including oxidant supply branch pipe and fuel supply branch pipe installed coaxially and plugged in outlet part. Fuel supply branch pipe extends inside oxidant supply branch pipe. On the cylindrical surface of the fuel supply branch pipe, located inside the combustion chamber, there are transverse ribs, in which there are longitudinal holes connecting the annular channels formed by the branch pipes, and radial holes connecting inner cavity of fuel supply branch pipe with annular grooves made on cylindrical surface of transverse ribs. On cylindrical surface of oxidant supply branch pipe located inside combustion chamber there are radial holes connected to annular grooves, and inclined holes communicating with annular channels forming mixing elements. On cylindrical surface of combustion chamber there are four slotted nozzles arranged uniformly along circumference and perpendicular to longitudinal axis of combustion chamber. In each slotted nozzle there is a shaft in which there is a profiled through slot forming an internal contour of the slotted nozzle, and one of the ends of the shaft is connected to a drive providing overlapping of the slotted nozzle due to rotation of the shaft.

EFFECT: invention can be used in designing liquid-propellant engines of roll control, designed to control positions of spacecraft.

1 cl, 4 dwg