COOLING SYSTEM OF LIQUID-PROPELLANT ENGINE COMBUSTION CHAMBER Russian patent published in 2014 - IPC F02K9/64 

FIELD: engines and pumps.

SUBSTANCE: in a cooling system of a combustion chamber of a liquid-propellant engine, which includes external and internal walls connected by soldering through ribs made on the internal wall, at least one boundary cooling device of the internal wall of the combustion chamber, which in its turn includes an annular part centred along the internal wall with formation of an annular cavity, an annular slot in the internal wall and internal tangential openings attaching that slot to the annular cavity, dosing openings attaching the gap between two walls to the annular cavity, according to the invention, dosing openings are tangential and directed similar to internal tangential openings. Internal tangential openings can be made in a plane perpendicular to a combustion chamber axis. The annular part can be provided with one cylindrical and two end walls (front and rear ones); with that, one of the end faces is inclined. Finning can be made on the front end face. Finning can be made on the rear end face. Finning can be made on the cylindrical wall. Ratio of length of internal tangential openings to their diameter can be in the range of 1.0 to 2.5. Dosing openings can be calibrated. Calibrated jet nozzles can be installed into dosing openings.

EFFECT: improved cooling and increased specific thrust of an engine.

9 cl, 7 dwg