CUMULATIVE-HIGH-EXPLOSIVE CHARGE ENGINE Russian patent published in 2018 - IPC F02K9/95 F02K9/36 

FIELD: engines and pumps.

SUBSTANCE: invention relates to the solid fuel rocket engines used for operation as a part of cumulative high-explosive charge. Cumulative high-explosive charge engine comprises housing, nozzle, placed between the grate and the transition bottom charge, igniter and membrane in the form of cover. Grate is installed on the nozzle side and represents the series of concentric rings, between which holes and grooves are made. Membrane is mounted on the nozzle and has an afterburner tube on the engine inner side, and from the outside on the diaphragm the threaded socket for electric igniter or trigger is made. Igniter is placed between the grate and the retainer, which is fixed in the gap between the nozzle and the grate. Retainer is the convex thin-walled sheet part, in which center there is a hole, and on the retainer flange local protrusions are made by molding. Protrusions height is greater than the gap between the nozzle and the grate, and the holes in the grate orifice area ratio to the retainer hole area is greater than the charge accommodation chamber free volume ratio to the pre-nozzle volume.

EFFECT: invention allows to increase the engine efficiency and ensure the charge reliable ignition.

1 cl, 5 dwg