FIELD: engines and pumps.
SUBSTANCE: proposed engine comprises housing with heat-resistant coat, bottoms, nozzles arranged in pyramid-like ledges, partially armored solid-propellant charge with tapered cylindrical section and seal ring fitted between said charge and housing. Said charge has non-armored flat end faces. Outer surface of tapered cylindrical section has non-armored inclined platforms on the side of front bottom, right opposite pyramid-like ledges and at equal distance from one of ledge faces. Pyramid-like ledges are fixed on circular bulge made above tapered cylindrical section, on the housing inner surface. Aforesaid seal ring is arranged between the housing and charge with radial clearance, while heat-resistant coat is applied on the housing inner surface, between housing circular bulge and rear bottom. Circular widening is arranged in heat-resistant coat, ahead of seal ring.
EFFECT: higher reliability.
2 cl, 3 dwg
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