Abstract: An aiming system for a fire arm (3) mounted on an armored vehicle in which the gun can travel in elevation and in azimuth following two perpendicular directions, characterized in that the elevation bearing axis (Y'-O-Y) is located in a substantially horizontal plane, when the armored vehicle is standing on substantially horizontal ground, whereas the azimuth bearing axis (Z'-O-Z) is perpendicular to the elevation bearing axis (Y'-O-Y) and also perpendicular to the gun axis.

Abstract: A system for supplying a hydraulic fluid to a device such as a combustion chamber of a barrel of a liquid-propellant weapon containing a hydraulic jack including a piston and a cylinder that define a variable-volume chamber connected to a combustion chamber by an outlet passage. The system has a damper assembly that includes a tip portion that projects inside a variable-volume chamber and a cavity formed in a piston to damp the movement of the piston at the end of its travel by a hydraulic fluid compression effect. An adjustment mechanism allows the length of tip projecting inside the chamber to be adjusted according to the volume of the variable-volume chamber.

Abstract: A device for percussion firing of a mortar or similar comprises a translationally mobile firing pin and means for actuating it. Said firing pin is part of a firing assembly (10) housed in a casing (23) secured to the base plate (27) of the mortar (M), said firing assembly being actuated, via a firing system (16), by a firing spring (33) with interposed articulated lever (51) to which is coupled a pivot arm (54) interacting with a control unit (13) forming part of the firing system (16) and with a mobile stop (11)also secured to the rear base plate (27) of the mortar (M), designed to cooperate with a fixed part (80) of the said mortar (M).

Abstract: A liquid-propellant weapon includes an injection system composed of several variable-volume reservoirs in each of which a piston is translationally freely mounted. The reservoirs are made in an annular body mounted around a barrel of the weapon. Each reservoir communicates with a combustion chamber by an inlet channel to cause displacement of the piston by the pressure of the combustion gases in the chamber and by an outlet channel to inject the propellant agent under pressure inside the chamber as a result of the displacement of the piston.

Abstract: A rapid fire mortar including an ammunition cylinder, each of whose chambers is provided at its rear end with a metal seal, of which the bottom forms a support for a round of ammunition. The seal is slidably mounted in the chamber to compensate for variations in the dimensions of the chambers and has walls which are elastically deformable by the gas pressure when firing in order to ensure gas-tightness between the chamber and a firing plate.