FIELD: engines and pumps.
SUBSTANCE: solid propellant charge comprises propellant grain inhibited at rear end and side surface by armor sheath. Armor sheath is removed on the side of grain outer surface uninhibited end by conical groove. Said channel-free grain is reinforced by metallic current conducting elements. Armor sheath is removed from grain side surface by two diametrically opposite grooves. Grain geometrical sizes are defined by relationships protected by this invention.
EFFECT: invention allows using two grain thrust modes at minimum weight and dimensions characteristics, higher safety and ease of manufacture.
2 cl, 2 dwg, 1 tbl
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