WEAPON USING LIQUID PROPELLING SUBSTANCE Russian patent published in 1998 - IPC

FIELD: firearms using liquid and/or gaseous propelling substance. SUBSTANCE: weapon using liquid propelling substance has barrel with bore, loading chamber with loading window and lock shutting loading window that has longitudinal hole and feeding conduit facing longitudinal hole where needle with piston attached to it is mounted for movement into loading chamber. Piston is positioned in front of outlet of feeding conduit into longitudinal hole. Loading chamber with loading window is made in body joined to barrel. Lock is put into body behind loading window. Second loading chamber similar to first one is made in body and has loading window where second lock identical to first one is positioned. Combustion chamber, two conduits connecting it to loading chambers and conduit in the form of nozzle leading out of combustion chamber and uniaxial to bore are manufactured in body in front of front walls of loading chambers. Igniter is placed in body with outlet to combustion chamber, lock including wedge that has through conduit uniaxial to bore and having dimensions ensuring positioning of projectile is mounted between face wall of combustion chamber and face of barrel. Second combustion chamber and two conduits communicating rear parts of loading chambers and second combustion chamber is fabricated in body between loading chambers. Igniter is set in body with exit to second combustion chamber and two blades are mounted for movement into loading chambers at points outlets of mentioned conduits. EFFECT: separate feeding and isolated location of fuel and oxidizer in loading chambers, their separate feeding to combustion chamber and maintenance of relatively constant pressure in space behind projectile. 1 cl, 2 dwg