Nexter Munitions

Giat Industries

Richard Roy

Nicolas Eches

Simon Huguenin

Arnaud Guilloux

Joel M Leblond

Sylvain Pinoteau

Marie-Christine Paris

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a projectile, the fin including a fin base pivoting about a pivot pin secured to the body of the projectile between a withdrawn fin position and a deployed fin position, wherein the device includes at least one recess housing at least one shape of revolution pushed by a resilient means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.

Fin blocking device and projectile having such a device

A projectile () with incidence steerable control surfaces () each pivotable with respect to the projectile (), comprises: central control means () for controlling the control surfaces (), a control arm () adapted to rotate the central control means () around pitch (Y) and yaw (Z) axes of the projectile (), positioning means for positioning the arm (), adapted to position one end of the arm () in a position determined with respect to an absolute reference frame, the positioning means comprising a cone () movable in translation so as to pivot the central control means around an orientation axis (AO), and a toothed wheel () meshing with a motorization intended to pilot the angular position of the orientation axis in an absolute reference frame.

Projectile with steerable control surfaces

The invention relates to a steering method of a projectile and to the associated projectile with incidence steerable fins, comprising at least three fins, each being pivotable with respect to the projectile around a pivot axis perpendicular to the longitudinal axis X of the projectile, wherein the projectile comprises a fin orientation ring, the ring comprising as many arms as there are fins, wherein the ring can translate in a plan P perpendicular to the longitudinal axis X of the projectile and following at least two directions of this plan P, wherein the orientation ring can rotate on itself around its center parallel to the longitudinal axis X of the projectile, each arm comprising means cooperating with an orientation lever fixed to a fin to be able to pivot the fin around its pivot axis during translation of the ring by positioning means.

Projectile with steerable fins and control method of the fins of such a projectile

The subject-matter of the invention is a method for controlling the control surfaces of a projectile and the associated projectile comprising incidence steerable control surfaces and comprising at least two control surfaces, each one being rotatable with respect to the projectile around a pivot axis perpendicular to the longitudinal axis X of the projectile, wherein the projectile comprises central means for controlling the control surfaces having at least a spherical shape, a control arm secured to the spherical shape and adapted to rotate the spherical shape, for each control surface a transmission member cooperating with the spherical shape and adapted to transmit to the control surface the rotation movements of the spherical shape, and means for positioning the arm.

Projectile with steerable control surfaces and control method of the control surfaces of such a projectile

An arrow-type sub-caliber projectile has a piercing bar which is cylindrical about a longitudinal axis, extended by a conical portion, and is surrounded by a sabot made of a lightweight material and allows the firing of the projectile in a weapon. This conical portion has a tip of a heating-resistant material with a maximum diameter less than half the diameter of the bar, the tip being connected to the bar by a support structure having no ballistic effects, the bar having a flat front face which is perpendicular to the longitudinal axis of the bar, the flat front face area being substantially equal to the cross-sectional area of the bar, thus with no element with ballistic effects interposed between the flat front face of the bar and the tip.

Sub-caliber projectile with a fitted head structure

A projectile body intended to evolve in a fluid, such body equipped with at least two radially deployable control surfaces, such control surfaces being accommodated prior to their deployment in housings made in the body, such that the housings communicate at their intersection point, each housing being blocked by sealing device preventing any fluid from the exterior of the projectile body from passing through the housings when the control surfaces are deployed.

Projectile body equipped with deployable control surfaces

A sub-caliber projectile of the fin-stabilized type incorporating a sabot and a penetrator linked together by shape matching linking means, said linking means incorporating a first profile machined at a bore of said sabot and cooperating with a second profile on said penetrator, each of said first and second profiles having a shape according to a section in an axial plane that alternates teeth and grooves, the axial play between one of said teeth of said penetrator and one of said grooves forming the housing of said one of said teeth in said sabot being variable along the axis of said projectile, wherein said linking means incorporate a front part (F) and a rear part (R) in which the play, at a mean temperature, between said penetrator teeth and the housings of said teeth in said sabot is variable, the play, firstly, increasing between said median zone (M) of said sabot and a front end of said sabot and, secondly, increasing between said median zone (M) of said sabot and a rear end of said sabot.

Sub-calibre projectile of the fin-stabilised type incorporating a sabot and a penetrator

A device for driving in rotation fins of a projectile, the fins being of the deployable type integral with fin heads which are able to be oriented along an axis of spin (X, Y) substantially orthogonal to a projectile's longitudinal axis (Z), wherein the fin heads are driven in rotation by motors and substantially ring sector-shaped sliders which slide in a circular groove.

Drive device for projectile fins

A device including a ring for linking a case and a projectile carrying a sealing band having a rear skirt providing low pressure sealing and a front rib lodged in a first groove in the projectile. The ring has a flared rear part connected with the case and a front part connected with the projectile by attachment means. The front part of the ring is lodged between the rear skirt of the band and the projectile and has a lip co-operating with the first groove or with a second groove in the projectile. A process for mounting the sealing band and ring to link the case and projectile includes sliding the sealing band and ring along the projectile in a single operation.

Device to link a case and a projectile and process to mount a band onto a projectile implementing such a linking device

A device for joining a first face of a first container to a second face of a second container, in which the first face and the second face are alignable along a longitudinal axis, includes a plurality of hooks and a hook receiving portion. The plurality of hooks are spaced around a periphery of the first face of the first container. The hooks have tips and are movable in a direction parallel to the longitudinal axis. The hook receiving portion is disposed around a periphery of the second face of the second container. The hook receiving portion includes a groove shaped to receive the tips of the hooks so that the first container can be joined to the second container. As a result, the device permits two containers to be joined securely yet disassembled quickly.

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Bourges, France

Richard Roy