SOLID PROPELLANT ROCKET ENGINE FOR SUBMARINE-LAUNCHED MISSILES Russian patent published in 2009 - IPC F02K9/08 F42B19/26 

FIELD: engines and pumps.

SUBSTANCE: invention is related to the field of rocket engineering, namely to rocket engines for submarine-launched missiles. Solid propellant rocket engine for submarine-launched missiles comprises chamber that contains cylindrical body, solid propellant charge, igniter, nozzle cluster, nozzle that connects nozzle cluster to chamber, with heat-shielding coating applied on inside, engine mode select switch arranged in the form of separate unit, and electric communications that pass through engine. Chamber body is detachably fixed to front bottom and back frame. Solid propellant charge is arranged in the form of end-burning charge, is installed in chamber and armored on external surface. Chamber body is arranged as two-layer, which comprises external cylindrical shell and internal cylindrical shell equipped with ring ribs that are integrally fixed to it, every of which comprises long slots oriented in single section. In front bottom and back frame channels are provided, which are oriented in the same section as long slots in ribs, creating through long communication groove that contains electric communications. Nozzle cluster is arranged as cylindrical and is equipped with two serially installed inserts, which have different diameter of critical sections. Insert with the least diameter of critical section is arranged with the possibility of its release and is fixed in nozzle cluster body with the help of stop device, for instance ball lock. Nozzle that connects nozzle cluster to chamber, is equipped with jacket installed with clearance around nozzle and detachably tightly fixed to chamber frame. Clearance cavity at the inlet is communicated to environment with the help of through openings row in frame oriented at the angle of 60° to engine axis.

EFFECT: higher efficiency of anti-submarine missiles, simplification of their design, and also expansion of field of such missiles application, providing possibility of their application both from aviation carriers and missile launching canisters of surface and subsurface vessels.

6 cl, 2 dwg