Liquid propellant gun (recoilless regenerative piston)

摘要

A liquid propellant gun has a combustion chamber which receives liquid propellant from a differential piston operating in a supply chamber, has a gun barrel for the discharge of a projectile, and a balancing nozzle for the discharge of combustion gas. The effective open cross-sectional area of the balancing nozzle is controlled by a plug coupled to the differential piston so that at the start of combustion the nozzle is substantially closed, is subsequently progressively opened in a controlled manner independent of the displacement of the projectile, and is finally fully opened or closed.