FIELD: projectiles.
SUBSTANCE: invention relates to projectiles moving in an aquatic environment. Projectile includes a housing that houses a jet engine with a central nozzle, ballistic tip, made in the form of a truncated cone, and an annular nozzle for blowing gas into the aquatic environment. Rocket engine of solid fuel is used as a jet engine, the charge of solid fuel has a through axial channel of a star-shaped section. In the subsonic part of the central nozzle there is an igniter arranged to delay the ignition of solid fuel. In the head part of the body there is a cylindrical recess, in which a ballistic tip is installed with a gap mating with the inner forming cylindrical recess. Along the axis of the ballistic tip there is a through channel connected to the charge channel of solid fuel and having a constriction at the head of the ballistic tip. Annular gap between the ballistic tip and the cylindrical recess is connected with at least three symmetrically arranged radial channels with a through channel of the ballistic tip and forms an annular nozzle, made with the possibility of blowing into the aquatic environment of the products of combustion of a charge of solid fuel at an angle to the longitudinal axis of the projectile in the direction of its stern. In the narrowing of the through channel of the ballistic tip a cylindrical plug is tightly installed with the possibility of its ejection under the action of pressure of products of combustion of a charge of solid fuel. Pressure of the combustion products in the axial channel of solid fuel, the critical section area of the central jet nozzle, the cross-sectional area of the narrowing of the through channel of the ballistic tip and the annular gap, the total cross-sectional area of the radial channels, the delay time of ignition of the charge of solid fuel and the angle of injection of combustion products through an annular nozzle are determined by given algebraic formulas.
EFFECT: technical result is to increase the firing range of the projectile in the aquatic environment.
3 cl, 5 dwg, 3 tbl
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