FIELD: engines and pumps.
SUBSTANCE: in a cooling system of a liquid-propellant engine chamber, which includes a cylindrical combustion chamber and a nozzle containing in its turn convergent and divergent parts and a critical section between them, which are made in the form of an external cover, an internal cover with the main fins of constant thickness, which form a cooling circuit, and at least one barrier belt with tangential openings and a manifold, inside which an annular part is installed, according to the invention, the annular part is made in the form of a semi-toroid with a cavity, on the annular part there made at an angle to the combustion chamber axis are inlet openings with possibility of cooler flow swirling in the plane; with that, the axis of those openings crosses some part of the wall of the annular part before the tangential openings. The barrier belt can be made at the attachment point of the combustion chamber and the nozzle. The barrier belt can be made in the middle of the nozzle convergent part. There can be made two barrier belts.
EFFECT: improved cooling of a critical section of the nozzle and increased specific thrust of an engine.
4 cl, 7 dwg
