WORKING CHAMBER OF BULK FUEL ROCKET ENGINE Russian patent published in 2022 - IPC F02K9/70 F02K9/08 

FIELD: space rocket science.

SUBSTANCE: invention relates to the field of space rocket science, in particular to rocket engines operating on solid dispersed bulk fuel. A working chamber of a bulk fuel rocket engine (BFRE) contains a combustion chamber, a nozzle, a solid fuel charge, and heat-protective coating. At the same time, the working chamber contains a hopper of bulk solid fuel, a bottom of the hopper is made in the form of a piston located in a hopper shell with the possibility of axial movement. In this case, on the bottom, by means of a bearing, a working chamber of the engine is fixed, communicating with the hopper by means of a sluice power supply mechanism. The working chamber also contains slot channels, through which heat-protective tapes are passed, passing along walls of the chamber through a critical section of the nozzle with mutual spiral-shaped overlap to a tape-stretching mechanism located on a cut of the nozzle. Part of a shell of the working chamber, composing the nozzle and the combustion chamber, has a shape of two cones gradually jointed between each other along a narrow part. In this case, slot channels for input of heat-protective tapes are formed by a gap between an upper conical part of the specified shell and flanging of the bottom of the working chamber, made in the form of a conical ring, which is connected to the above-mentioned conical part by means of power jumpers, a working section of each of which is distributed along a cone generatrix.

EFFECT: invention provides reduction in the weight of an engine structure and increase in a working resource.

1 cl, 4 dwg