COOLING CIRCUIT OF LIQUID-PROPELLANT ENGINE CHAMBER Russian patent published in 2010 - IPC F02K9/64 

FIELD: engines and pumps.

SUBSTANCE: invention refers to rocket engine building industry and can be used during development of chambers of liquid-propellant engines (LPE), namely for alternator-free LPEs operating on cryogenic components, e.g. oxygen and hydrogen. Cooling circuit of liquid propellant engine chamber includes internal shaped cover with ribs of constant thickness, which are made in it and form cooling circuit channels. Cooling circuit channels have trapezoidal profile of variable width with angle rounded along the radius and adjacent to internal surface of the cover. On internal shaped cover there installed is external shaped cover and attached to it. On internal surface of internal cover, on the side of combustion chamber, at the location point of ribs, there are longitudinal shaped slots the profile of which is equally spaced to the profile of radii of passages between ribs and internal cylindrical surface of cooling circuit channel, and longitudinal ribs are made between longitudinal profiled slots.

EFFECT: improving heat exchange conditions between combustion products and cooler.

2 cl, 3 dwg