Abstract: The invention relates to a combustible cartridge case (1) for ammunition, comprising a cylindrical envelope (2) intended to contain a propellant charge and to receive a projectile at a front end (AV). The cartridge case comprises, at a rear end (AR), a bottom (3) that is integral with the cylindrical envelope (2) and is intended to be positioned in a base. The cartridge case is characterised in that the bottom (3) comprises a combustible central ring (5) that is connected to a peripheral cup (4) by at least two combustible radial arms (6) delimiting openings (7).

Abstract: A steel having high mechanical properties, characterized in that it has the following composition by weight: 12% to 25 % Nickel; 7.4% to 20 % Cobalt; 3% to 11% Molybdenum; 0.2% to 2.21% addition elements, the remainder being iron, the structure of the material including a combination of fine grains and ultrafine grains, the so-called fine grains having a grain size of between 1.2 micrometers and 3 micrometers and the so-called ultrafine grains having a grain size of between 0.2 and 1 micrometer, the proportion of ultrafine grains being between 55 % and 65 %, and a process for manufacturing the steel.

Abstract: A fuze for a projectile intended to be fired by a cannon by ignition of a propellant charge using an electric igniter. This fuze is allowed to pase from a safety position to an armed position following the fire by releasing at least two different safeties. This fuze includes a capacitor which is intended to be connected to the electric igniter and which charges during the ignition of the propellant charge, and also a computer which detects the charge of the capacitor in order to allow the arming of the fuze when this charge is greater than or equal to a reference value, the charge of the capacitor constituting a first fire safety.

Abstract: A device for simulating a dynamic munition-related environment for a projectile, and a simulation device-projectile assembly including: a suspension device configured for suspending the projectile along the longitudinal direction of the projectile in such a way that the projectile is mounted freely along the longitudinal axis of the projectile; a propulsion device configured for being positioned facing the rear end of the projectile at a predefined distance from the projectile; and an impactor configured for being propelled, by the propulsion device, at a predetermined velocity toward the rear end of the projectile so as to strike the projectile so as to reproduce a shock response spectrum specific to an exit from a muzzle.

Abstract: A projectile includes a hollow body carrying a payload formed of inert sub-projectiles that can be dispersed on trajectory contained in a cup including a piston closing one of its ends, the body at its rear part with a base housing a pyrotechnic charge separated from the sub-projectiles by the piston, which can translate with respect to the body of the projectile to push the cup and the sub-projectiles axially out of the body. The cup is formed of independent sectors. The piston is secured to the sectors when contained in the body and the cup is secured to the body by a connecting apparatus weakened to break under the force of the piston pushed by the gases generated by the pyrotechnic charge. An ogive is secured to the cup by a securing apparatus that is coaxial with the longitudinal axis of the projectile and locked by the sectors.

Abstract: The invention relates to a penetrating and explosive projectile (1) provided with a trajectory-stabilizing fin assembly (8) which is secured to a body of the projectile by a mechanical connection. The fin assembly (8) includes a tapped tube (14) which engages on a threaded rear cylindrical shank (10) of a tail (9) connected to the projectile body (2), thereby forming a threaded mechanical connection (13) between the tail unit (8) and the body (2). This projectile (1) is characterized in that it includes means ensuring the fragilization of the threaded connection (13) on impact on a target, the fin assembly then separating from the projectile body.

Abstract: A circuit for controlling the firing of an exploding-foil pyrotechnic component including at least one capacitor and switch means, the capacitor being connected to the pyrotechnic component by an array of at least three diodes connected in series and in a direction that prevents the capacitor from discharging, the sum of the reverse voltages of these diodes being greater than the maximum voltage that can be delivered by the capacitor, the switch means including at least two field-effect transistors associated with the array of diodes.

Abstract: An electronic fuze for a projectile, the electronic fuze including at least one electronic board arranged in a housing of the body of the projectile, the electronic board being encapsulated in a block of protective material. The electronic board is secured to at least one support rod partially encapsulated in the block of protective material. The support rod is inserted through a hole in a wall integral with the body of the projectile, and the support rod is secured to the wall by a fastening device. A first decoupling devices is interposed between the block of protective material and the wall and a second decoupling device is interposed between the fastening device and the wall. The electronic board is located towards a front part of the projectile and the wall is located towards a rear part of the projectile.

Abstract: A fuze for a projectile intended to be fired by a cannon by ignition of a propellant charge using an electric igniter. This fuze is allowed to pass from a safety position to an armed position following the fire by releasing at least two different safeties. This fuze includes a capacitor which is intended to be connected to the electric igniter and which charges during the ignition of the propellant charge, and also a computer which detects the charge of the capacitor in order to allow the arming of the fuze when this charge is greater than or equal to a reference value, the charge of the capacitor constituting a first fire safety.

Abstract: A circuit for controlling the firing of an exploding-foil pyrotechnic component including at least one capacitor and switch means, the capacitor being connected to the pyrotechnic component by an array of at least three diodes connected in series and in a direction that prevents the capacitor from discharging, the sum of the reverse voltages of these diodes being greater than the maximum voltage that can be delivered by the capacitor, the switch means including at least two field-effect transistors associated with the array of diodes.

Abstract: A device for blocking a fin of a projectile, the fin including a fin base pivoting about a pivot pin secured to the body of the projectile between a withdrawn fin position and a deployed fin position, wherein the device includes at least one recess housing at least one shape of revolution pushed by a resilient means between a first surface borne by the fin and a second surface borne by the body of the projectile, at least one of the two surfaces forming a ramp that converges toward the other surface to tend to cause jamming of the shape of revolution between the two surfaces.

Abstract: A smoke composition which is effective in the visible and infrared ranges and includes at least one oxidant and at least one reducing agent and at least one smoke agent generating carbon particles. This composition has superchlorinated polyvinyl chloride (C-PVC) as smoke agent, wherein the chlorine content of this smoke agent is between 57% and 70% of the weight of superchlorinated polyvinyl chloride, wherein the composition has 49% to 90% by weight of superchlorinated polyvinyl chloride (C-PVC) based on the total weight of the composition.

Abstract: A projectile including at least one pair of airfoil sections, deployable from housings located inside the body and emerging toward the outside of the projectile. The projectile includes a casing surrounding the body of the projectile and outer surface of which is in profile continuity with the body. The casing can pivot around body along longitudinal axis and includes, for each section, an opening having two zones. A first zone is indented to be positioned, by pivoting of the casing, so as to face a housing in order to allow the section to pass to allow it to be deployed, and second zone located as a recess lateral to the first zone, the recess being oriented along a direction substantially perpendicular to the first zone's longitudinal direction, the second zone having a width allowing the passage of a foot of the deployed section.

Abstract: The invention relates to a penetrating and explosive projectile (1) provided with a trajectory-stabilizing fin assembly (8) which is secured to a body of the projectile by a mechanical connection. The fin assembly (8) includes a tapped tube (14) which engages on a threaded rear cylindrical shank (10) of a tail (9) connected to the projectile body (2), thereby forming a threaded mechanical connection (13) between the tail unit (8) and the body (2). This projectile (1) is characterized in that it includes means ensuring the fragilization of the threaded connection (13) on impact on a target, the fin assembly then separating from the projectile body.

Abstract: A projectile includes a hollow body carrying a payload formed of inert sub-projectiles that can be dispersed on trajectory contained in a cup including a piston closing one of its ends, the body at its rear part with a base housing a pyrotechnic charge separated from the sub-projectiles by the piston, which can translate with respect to the body of the projectile to push the cup and the sub-projectiles axially out of the body. The cup is formed of independent sectors. The piston is secured to the sectors when contained in the body and the cup is secured to the body by a connecting apparatus weakened to break under the force of the piston pushed by the gases generated by the pyrotechnic charge. An ogive is secured to the cup by a securing apparatus that is coaxial with the longitudinal axis of the projectile and locked by the sectors.

Abstract: An aerodynamic braking device for a payload casing intended to be ejected from a projectile on its trajectory including at least one parachute connected to the casing by hangers, the parachute and the parachute hangers being housed in a sleeve. The sleeve is wound around an axis of winding perpendicular to its longitudinal direction and attached to a cylindrical housing the axis of which is parallel to the axis of winding, which housing is itself secured to a shell base that closes off the projectile, the hangers being connected to the casing by an extension cable which is wound around the axis of the housing and attached thereto by at least three peripheral break lines which are uniformly angularly distributed.

Abstract: An electronic fuze for a projectile, the electronic fuze including at least one electronic board arranged in a housing of the body of the projectile, the electronic board being encapsulated in a block of protective material. The electronic board is secured to at least one support rod partially encapsulated in the block of protective material. The support rod is inserted through a hole in a wall integral with the body of the projectile, and the support rod is secured to the wall by a fastening device. A first decoupling devices is interposed between the block of protective material and the wall and a second decoupling device is interposed between the fastening device and the wall. The electronic board is located towards a front part of the projectile and the wall is located towards a rear part of the projectile.

Abstract: The invention relates to a cartridge having a projectile secured to a case that contains a propelling charge and closed by a base. A device for igniting the propelling charge has at least two energetic igniter cords that extend between an initiating means secured to a rear part of the case and the projectile. In this cartridge, the cords are joined at their rear part so as to form a strand, and they are fastened by at least one fastening means secured to the cartridge, the strand being connected to the initiating means by a packing gland making it possible to immobilize the cords both radially and axially relative to the initiating means while keeping the cords tight between their fastening means and the initiating means.

Abstract: A sub-caliber projectile of the kinetic energy type comprising a perforating rod surrounded by a sabot made of light material and allowing the projectile to be fired from a weapon, the rod being extended by a stabilizing tail. The tail is connected to the rod by a connection means that can be broken, the breaking being initiated by a control means integral with the projectile. The control means comprises a timing module which is connected to a programming interface and which is programmed before firing or during firing so as to ensure the breaking of the connection means at a reference distance relative to a target which is to be neutralized. The invention also relates to a method of neutralizing a target using such a sub-caliber projectile.

Abstract: The present invention relates to a projectile including a body having a longitudinal axis and an intermediate portion comprising a wing or fin deployment device including at least a number N, at least equal to three, of wings or fins able to be deployed, the deployment method comprising at least two phases, a first deployment phase in which each wing or fin switches from a position tangential to the body of the projectile and parallel to the longitudinal axis to a semi-deployed position, and a second deployment phase with the switching of each wing from the semi-deployed position to a deployed position in which it is perpendicular to the body of the projectile, said wing deployment device is configured to synchronize the deployment of wings or fins in the second phase.