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

FIELD: engines and pumps.

SUBSTANCE: annular chamber of liquid propellant engine includes nozzle, regeneratively cooled combustion chamber, which consist of several internal and external covers attached to each other; at that, on internal covers there are ribs forming together with the above external covers the cooling channels. Mixing head with cavities of combustible and oxidiser is located axisymmetrically inside the nozzle. Combustion chamber is provided with shaped internal wall and located along longitudinal chamber axis, and inside combustion chamber there installed is cooled cylinder consisting of several coaxially installed covers, 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. On top of ribs of cooling circuit there are blades located parallel to the slot bottom; at that, external profile of blades corresponds to internal profile. In order to increase the cover stability, the blades attach the tops of two adjacent ribs to each other, the blades attach the tops of all ribs to each other so that common annular surface is formed, and the external profile of which is equally spaced relative to internal profile of external cover at point of contact with external surface of internal cover.

EFFECT: increasing stability of internal cover and strength of annular chamber as a whole.

3 cl, 2 dwg