EP3985345A1 - Piercing and explosive projectile provided with a stabilisation tail - Google Patents

Piercing and explosive projectile provided with a stabilisation tail Download PDF

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Publication number
EP3985345A1
EP3985345A1 EP21202156.2A EP21202156A EP3985345A1 EP 3985345 A1 EP3985345 A1 EP 3985345A1 EP 21202156 A EP21202156 A EP 21202156A EP 3985345 A1 EP3985345 A1 EP 3985345A1
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EP
European Patent Office
Prior art keywords
projectile
empennage
tail
threaded
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21202156.2A
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German (de)
French (fr)
Inventor
Julien PAVIER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knds Ammo France
Original Assignee
Nexter Munitions SA
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Filing date
Publication date
Application filed by Nexter Munitions SA filed Critical Nexter Munitions SA
Publication of EP3985345A1 publication Critical patent/EP3985345A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/04—Stabilising arrangements using fixed fins
    • F42B10/06—Tail fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08—Ordnance projectiles or missiles, e.g. shells
    • F42B30/10—Mortar projectiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/10—Impact fuzes, i.e. fuzes actuated only by ammunition impact without firing-pin

Definitions

  • the technical field of the invention is that of empennage-stabilized projectiles and more particularly that of explosive and armor-piercing projectiles.
  • Explosive projectiles also having a piercing capability are intended to pass through an armored protection and to explode behind the protection.
  • the body of the projectile comprises a reinforced warhead and the fuze ensuring the firing of the explosive charge is located at the level of a rear part (or base) of the projectile so as not to be destroyed by the impact.
  • the object of the invention is therefore to propose a perforating and explosive projectile whose architecture makes it possible not to disturb or destroy the rocket at the moment of impact on a target.
  • the subject of the invention is an armor-piercing and explosive projectile provided with a stabilizer tail on trajectory which is fixed to a body of the projectile by a mechanical connection, the tail comprising a threaded tube which engages on a rear cylindrical rod threaded with an empennage tail connected to the body of the projectile, thus forming a threaded mechanical connection of the empennage and the body, projectile characterized in that it comprises means ensuring the embrittlement of the threaded connection on impact on a target, the empennage then separating from the body of the projectile.
  • the projectile comprises a rocket placed at the level of a rear part of the projectile and the empennage tail carrying the empennage comprises a conical portion which is connected to the body of the projectile.
  • the empennage may also comprise means of weakening constituted by initiators of ruptures arranged on the tube of the empennage, between the fins of the empennage, initiators of ruptures produced in the form of longitudinal grooves which ensure a thinning of the thickness of the tube, the advance by inertia of the empennage on the conical portion, during the impact of the projectile on a target, causing the rupture of the grooves.
  • Each fin may comprise a conical front part cooperating with the conical portion of the tailplane.
  • the front part of the tube may also comprise a conical part in the extension of the conical front parts of the fins.
  • a projectile 1 comprises a body 2 containing an explosive charge 3.
  • the body 2 is closed at its front part by a tip 4 made of dense material, such as a steel with high mechanical characteristics or a tungsten alloy, and which is intended to allow the perforation of a target.
  • the explosive charge 3 is intended to be initiated by a detonation relay 5 which is itself initiated by a rocket 6 which is arranged in a base 7 fixed to the rear part of the body 2, for example by a thread.
  • the projectile 1 also comprises a stabilizer tail 8 which is fixed to the body 2 of the projectile by means of a threaded mechanical connection which comprises a tail 9.
  • This tail 9 comprises a rear cylindrical rod 10, extended at the front by a conical portion 11 which is connected to the body 2 of the projectile at the level of a threaded bearing surface 12 of the base 7.
  • the cylindrical rod 10 has a thread on which is fixed a threaded tube 14 which carries the fins 15 of the empennage 8.
  • the thread of the rod 10 and the thread of the tube 14 form the threaded connection 13.
  • the tube 14 carries an internal partition 16 which separates a front chamber 17 and a rear chamber 18.
  • the rear chamber 18 is intended to receive a pyrotechnic tracer.
  • the projectile 1 comprises means ensuring the embrittlement of the threaded connection 13 between the thread of the rod 10 and the internal thread of the tube 14 at the moment of the impact of the projectile on a target.
  • weakening means a simple transverse groove made on the rod 10, between the threaded part and the conical portion 11.
  • This groove will weaken the rod 10 which will break on impact with a target.
  • the empennage 8 will then separate from the projectile 1 and will not disturb the operation of the rocket.
  • the external profile of the conical portion 11 also ensures a deflection of the empennage 8, therefore a protection of the rocket 6 against the impacts caused by this one.
  • the stabilizer 8 has longitudinal grooves 19 which extend longitudinally over substantially the entire length of the tube 14 and which are arranged between each pair of fins 15 of the stabilizer, halfway between two adjacent fins 15.
  • longitudinal grooves 19 there are two parallel longitudinal grooves 19 arranged between each pair of fins 15.
  • each fin 15 comprises a front part with a conical profile 20 which is intended to cooperate with the portion taper 11 of tailplane tail 9. This front part with conical profile 20 also extends at the level of the front part of tube 14 which is also conical.
  • Each fin 15 thus follows a trajectory which separates it from the rocket 6.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Vibration Dampers (AREA)

Abstract

L'invention a pour objet un projectile (1) perforant et explosif qui est doté d'un empennage (8) de stabilisation sur trajectoire qui est fixé à un corps du projectile par une liaison mécanique. L'empennage (8) comporte un tube taraudé (14) qui s'engage sur une tige cylindrique arrière filetée (10) d'une queue d'empennage (9) reliée au corps (2) de projectile, formant ainsi une liaison mécanique filetée (13) de l'empennage (8) et du corps (2). Ce projectile (1) est caractérisé en ce qu'il comporte des moyens assurant la fragilisation de la liaison filetée (13) à l'impact sur une cible, l'empennage se séparant alors du corps de projectile.The subject of the invention is an armor-piercing and explosive projectile (1) which is provided with a trajectory stabilization tail (8) which is fixed to a body of the projectile by a mechanical connection. The empennage (8) comprises a threaded tube (14) which engages on a threaded rear cylindrical rod (10) of an empennage tail (9) connected to the body (2) of the projectile, thus forming a mechanical connection threaded (13) of the empennage (8) and the body (2). This projectile (1) is characterized in that it comprises means ensuring the embrittlement of the threaded connection (13) on impact with a target, the tail then separating from the body of the projectile.

Description

Le domaine technique de l'invention est celui des projectiles stabilisés par empennage et plus particulièrement celui des projectiles explosifs et perforants.The technical field of the invention is that of empennage-stabilized projectiles and more particularly that of explosive and armor-piercing projectiles.

Les projectiles explosifs ayant aussi une capacité de perforation sont destinés à traverser une protection blindée et à exploser derrière la protection.Explosive projectiles also having a piercing capability are intended to pass through an armored protection and to explode behind the protection.

Pour obtenir un tel fonctionnement, le corps du projectile comporte une ogive renforcée et la fusée assurant la mise à feu de la charge explosive se trouve localisée au niveau d'une partie arrière (ou culot) du projectile pour ne pas être détruite par l'impact.To obtain such operation, the body of the projectile comprises a reinforced warhead and the fuze ensuring the firing of the explosive charge is located at the level of a rear part (or base) of the projectile so as not to be destroyed by the impact.

Cependant, l'empennage des projectiles forme toujours une masse qui reste située en arrière de la fusée et qui risque de perturber le fonctionnement de celle-ci lors de l'impact.However, the empennage of the projectiles always forms a mass which remains situated behind the rocket and which risks disturbing the operation of the latter during impact.

Le but de l'invention est donc de proposer un projectile perforant et explosif dont l'architecture permette de ne pas perturber ou détruire la fusée au moment de l'impact sur une cible.The object of the invention is therefore to propose a perforating and explosive projectile whose architecture makes it possible not to disturb or destroy the rocket at the moment of impact on a target.

Ainsi l'invention a pour objet un projectile perforant et explosif doté d'un empennage de stabilisation sur trajectoire qui est fixé à un corps du projectile par une liaison mécanique, l'empennage comportant un tube taraudé qui s'engage sur une tige cylindrique arrière filetée d'une queue d'empennage reliée au corps de projectile, formant ainsi une liaison mécanique filetée de l'empennage et du corps, projectile caractérisé en ce qu'il comporte des moyens assurant la fragilisation de la liaison filetée à l'impact sur une cible, l'empennage se séparant alors du corps de projectile.Thus the subject of the invention is an armor-piercing and explosive projectile provided with a stabilizer tail on trajectory which is fixed to a body of the projectile by a mechanical connection, the tail comprising a threaded tube which engages on a rear cylindrical rod threaded with an empennage tail connected to the body of the projectile, thus forming a threaded mechanical connection of the empennage and the body, projectile characterized in that it comprises means ensuring the embrittlement of the threaded connection on impact on a target, the empennage then separating from the body of the projectile.

Selon un mode particulier de réalisation, le projectile comporte une fusée disposée au niveau d'une partie arrière du projectile et la queue d'empennage portant l'empennage comporte une portion conique qui se raccorde au corps du projectile.According to a particular embodiment, the projectile comprises a rocket placed at the level of a rear part of the projectile and the empennage tail carrying the empennage comprises a conical portion which is connected to the body of the projectile.

L'empennage pourra comporter par ailleurs des moyens de fragilisation constitués par des amorces de ruptures disposées sur le tube de l'empennage, entre les ailettes de l'empennage, amorces de ruptures réalisées sous la forme de rainures longitudinales qui assurent un amincissement de l'épaisseur du tube, l'avance par inertie de l'empennage sur la portion conique, lors de l'impact du projectile sur une cible, provoquant la rupture des rainures.The empennage may also comprise means of weakening constituted by initiators of ruptures arranged on the tube of the empennage, between the fins of the empennage, initiators of ruptures produced in the form of longitudinal grooves which ensure a thinning of the thickness of the tube, the advance by inertia of the empennage on the conical portion, during the impact of the projectile on a target, causing the rupture of the grooves.

Chaque ailette pourra comporter une partie avant conique coopérant avec la portion conique de la queue d'empennage.Each fin may comprise a conical front part cooperating with the conical portion of the tailplane.

La partie avant du tube pourra elle aussi comporter une partie conique dans le prolongement des parties avant coniques des ailettes.The front part of the tube may also comprise a conical part in the extension of the conical front parts of the fins.

L'invention sera mieux comprise à la lecture de la description qui va suivre de différents modes de réalisation, description faite en référence aux dessins annexés et dans lesquels :

  • [Fig. 1] montre en coupe longitudinale schématique un mode de réalisation d'un projectile selon l'invention ;
  • [Fig. 2] représente en perspective l'empennage seul ;
  • [Fig. 3] montre la déformation de l'empennage à l'impact sur une cible.
The invention will be better understood on reading the following description of various embodiments, description made with reference to the accompanying drawings and in which:
  • [ Fig. 1 ] shows in schematic longitudinal section an embodiment of a projectile according to the invention;
  • [ Fig. 2 ] represents in perspective the empennage alone;
  • [ Fig. 3 ] shows the deformation of the empennage on impact with a target.

En se reportant à la figure 1, un projectile 1 selon un mode de réalisation de l'invention comporte un corps 2 renfermant une charge explosive 3. Le corps 2 est fermé à sa partie avant par une pointe 4 en matériau dense, tel qu'un acier à hautes caractéristiques mécaniques ou un alliage de tungstène, et qui est destinée à permettre la perforation d'une cible.By referring to the figure 1 , a projectile 1 according to one embodiment of the invention comprises a body 2 containing an explosive charge 3. The body 2 is closed at its front part by a tip 4 made of dense material, such as a steel with high mechanical characteristics or a tungsten alloy, and which is intended to allow the perforation of a target.

La charge explosive 3 est destinée à être initiée par un relais de détonation 5 qui est lui-même initié par une fusée 6 qui est disposée dans un culot 7 fixé à la partie arrière du corps 2, par exemple par un filetage.The explosive charge 3 is intended to be initiated by a detonation relay 5 which is itself initiated by a rocket 6 which is arranged in a base 7 fixed to the rear part of the body 2, for example by a thread.

Le projectile 1 comporte aussi un empennage de stabilisation 8 qui est fixé au corps 2 du projectile par l'intermédiaire d'une liaison mécanique filetée qui comprend une queue d'empennage 9. Cette queue d'empennage 9 comporte une tige cylindrique arrière 10, prolongée à l'avant par une portion conique 11 qui se raccorde au corps 2 du projectile au niveau d'une portée filetée 12 du culot 7.The projectile 1 also comprises a stabilizer tail 8 which is fixed to the body 2 of the projectile by means of a threaded mechanical connection which comprises a tail 9. This tail 9 comprises a rear cylindrical rod 10, extended at the front by a conical portion 11 which is connected to the body 2 of the projectile at the level of a threaded bearing surface 12 of the base 7.

La tige cylindrique 10 comporte un filetage sur lequel se fixe un tube taraudé 14 qui porte les ailettes 15 de l'empennage 8. Le filetage de la tige 10 et le taraudage du tube 14 forment la liaison filetée 13.The cylindrical rod 10 has a thread on which is fixed a threaded tube 14 which carries the fins 15 of the empennage 8. The thread of the rod 10 and the thread of the tube 14 form the threaded connection 13.

Comme on le voit sur la figure 1, le tube 14 porte une cloison interne 16 qui sépare une chambre avant 17 et une chambre arrière 18. La chambre arrière 18 est destinée à recevoir un traceur pyrotechnique.As seen on the figure 1 , the tube 14 carries an internal partition 16 which separates a front chamber 17 and a rear chamber 18. The rear chamber 18 is intended to receive a pyrotechnic tracer.

Conformément à l'invention, le projectile 1 comporte des moyens assurant la fragilisation de la liaison filetée 13 entre le filetage de la tige 10 et le taraudage du tube 14 au moment de l'impact du projectile sur une cible.According to the invention, the projectile 1 comprises means ensuring the embrittlement of the threaded connection 13 between the thread of the rod 10 and the internal thread of the tube 14 at the moment of the impact of the projectile on a target.

Ainsi les efforts d'inertie qui s'exerceront sur l'empennage 8 lors du choc provoqueront la rupture des moyens de fragilisation, assurant alors la séparation de l'empennage 8 et du corps 2 du projectile 1.Thus the inertial forces which will be exerted on the tail unit 8 during the impact will cause the weakening means to break, thus ensuring the separation of the tail unit 8 and of the body 2 of the projectile 1.

On pourra par exemple définir comme moyen de fragilisation une simple rainure transversale réalisée sur la tige 10, entre la partie filetée et la portion conique 11.One could for example define as weakening means a simple transverse groove made on the rod 10, between the threaded part and the conical portion 11.

Cette rainure fragilisera la tige 10 qui se rompra lors de l'impact sur une cible.This groove will weaken the rod 10 which will break on impact with a target.

L'empennage 8 se désolidarisera alors du projectile 1 et ne perturbera pas le fonctionnement de la fusée.The empennage 8 will then separate from the projectile 1 and will not disturb the operation of the rocket.

On notera que le profil externe de la portion conique 11 assure également une déflection de l'empennage 8, donc une protection de la fusée 6 contre les impacts provoqués par celui ci.It will be noted that the external profile of the conical portion 11 also ensures a deflection of the empennage 8, therefore a protection of the rocket 6 against the impacts caused by this one.

On remarque sur la figure 1, que la queue d'empennage 9 a une portion conique 11.We notice on the figure 1 , that the empennage tail 9 has a conical portion 11.

Donc si les ailettes 15 ou l'empennage 8 impactent le corps 2 de projectile, l'impact se produira à distance de la fusée 6 et ne perturbera pas le fonctionnement de celle-ci.So if the fins 15 or the empennage 8 impact the body 2 of the projectile, the impact will occur at a distance from the rocket 6 and will not disturb the operation of the latter.

Suivant un mode particulier de réalisation de l'invention, on remarque à la figure 2 que l'empennage 8 comporte des rainures longitudinales 19 qui s'étendent longitudinalement sur sensiblement toute la longueur du tube 14 et qui sont disposées entre chaque paire d'ailettes 15 de l'empennage, à mi-distance de deux ailettes 15 voisines. Il y a ici deux rainures longitudinales 19 parallèles disposées entre chaque paire d'ailettes 15.According to a particular embodiment of the invention, it is noted at the figure 2 that the stabilizer 8 has longitudinal grooves 19 which extend longitudinally over substantially the entire length of the tube 14 and which are arranged between each pair of fins 15 of the stabilizer, halfway between two adjacent fins 15. Here there are two parallel longitudinal grooves 19 arranged between each pair of fins 15.

Ces rainures 19 assurent un amincissement de l'épaisseur du tube 14 et constituent des amorces de ruptures de la paroi du tube 14. On remarque par ailleurs que chaque ailette 15 comporte une partie avant à profil conique 20 qui est destinée à coopérer avec la portion conique 11 de la queue d'empennage 9. Cette partie avant à profil conique 20 s'étend également au niveau de la partie avant du tube 14 qui est également conique.These grooves 19 ensure a thinning of the thickness of the tube 14 and constitute initiators of ruptures of the wall of the tube 14. It is also noted that each fin 15 comprises a front part with a conical profile 20 which is intended to cooperate with the portion taper 11 of tailplane tail 9. This front part with conical profile 20 also extends at the level of the front part of tube 14 which is also conical.

Comme on le voit à la figure 3, à l'impact du projectile 1 sur une cible 21, le projectile 1 est fortement décéléré. L'empennage 8 avance par inertie (flèche E) vers la portion conique 11, provoquant le cisaillement de la liaison filetée 13.As we see at the picture 3 , the impact of the projectile 1 on a target 21, the projectile 1 is greatly decelerated. The empennage 8 advances by inertia (arrow E) towards the conical portion 11, causing the threaded connection 13 to shear.

Cette avance de l'empennage 8 conduit à un glissement de la partie conique 20 de chaque ailette 15 (et du tube 14) sur le profil de la portion conique 11 de la queue d'empennage 9. Il en résulte une contrainte radiale conduisant à élargir le diamètre interne du tube 14. Cette contrainte provoque la rupture des rainures 19 et l'écartement des ailettes 15 les unes des autres (flèches A1 et A2).This advance of the tail unit 8 leads to a sliding of the conical part 20 of each fin 15 (and of the tube 14) on the profile of the conical portion 11 of the tail unit 9. This results in a radial stress leading to widen the internal diameter of the tube 14. This stress causes the rupture of the grooves 19 and the spacing of the fins 15 from each other (arrows A1 and A2).

Chaque ailette 15 suit ainsi une trajectoire qui l'écarte de la fusée 6.Each fin 15 thus follows a trajectory which separates it from the rocket 6.

Une telle disposition fiabilise la rupture de la liaison filetée 13 et assure que les impacts que l'empennage 8 pourrait provoquer sur la fusée 6 sont réduits au minimum.Such an arrangement makes the breakage of the threaded connection 13 more reliable and ensures that the impacts that the tailplane 8 could cause on the rocket 6 are reduced to a minimum.

Claims (5)

Projectile (1) perforant et explosif doté d'un empennage (8) de stabilisation sur trajectoire qui est fixé à un corps (2) du projectile par une liaison mécanique, l'empennage (8) comportant un tube taraudé (14) qui s'engage sur une tige cylindrique arrière (10) filetée d'une queue d'empennage (9) reliée au corps (2) de projectile, formant ainsi une liaison mécanique filetée (13) de l'empennage et du corps, projectile caractérisé en ce qu'il comporte des moyens assurant la fragilisation de la liaison filetée (13) à l'impact sur une cible, l'empennage (8) se séparant alors du corps (2) de projectile.Perforating and explosive projectile (1) provided with a stabilizer tail (8) on trajectory which is fixed to a body (2) of the projectile by a mechanical connection, the tail (8) comprising a threaded tube (14) which is engages on a threaded rear cylindrical rod (10) of an empennage tail (9) connected to the body (2) of the projectile, thus forming a threaded mechanical connection (13) of the empennage and of the body, projectile characterized in that it comprises means ensuring the embrittlement of the threaded connection (13) on impact with a target, the empennage (8) then separating from the body (2) of the projectile. Projectile perforant et explosif selon la revendication 1, caractérisé en ce qu'il comporte une fusée (6) disposée au niveau d'une partie arrière du projectile (1), et en ce que la queue d'empennage (9) portant l'empennage (8) comporte une portion conique (11) qui se raccorde au corps (2) du projectile.Perforating and explosive projectile according to Claim 1, characterized in that it comprises a fuze (6) arranged at the level of a rear part of the projectile (1), and in that the empennage tail (9) carrying the empennage (8) comprises a conical portion (11) which is connected to the body (2) of the projectile. Projectile perforant et explosif selon la revendication 2, caractérisé en ce que l'empennage (8) comporte par ailleurs des moyens de fragilisation constitués par des amorces de ruptures (19) disposées sur le tube (14) de l'empennage, entre les ailettes (15) de l'empennage (8), amorces de ruptures réalisées sous la forme de rainures longitudinales (19) qui assurent un amincissement de l'épaisseur du tube (14), l'avance par inertie de l'empennage (8) sur la portion conique (11), lors de l'impact du projectile sur une cible, provoquant la rupture des rainures.Armor-piercing and explosive projectile according to Claim 2, characterized in that the empennage (8) further comprises weakening means constituted by initiators of ruptures (19) arranged on the tube (14) of the empennage, between the fins (15) of the empennage (8), incipient fractures produced in the form of longitudinal grooves (19) which ensure a thinning of the thickness of the tube (14), the advance by inertia of the empennage (8) on the conical portion (11), during the impact of the projectile on a target, causing the rupture of the grooves. Projectile perforant et explosif selon la revendication 3, caractérisé en ce que chaque ailette (15) comporte une partie avant conique (20) coopérant avec la portion conique (11) de la queue d'empennage (9).Armor-piercing and explosive projectile according to Claim 3, characterized in that each fin (15) comprises a conical front part (20) cooperating with the conical portion (11) of the empennage tail (9). Projectile perforant et explosif selon la revendication 3, caractérisé en ce que la partie avant du tube (14) comporte aussi une partie conique dans le prolongement des parties avant coniques (20) des ailettes (15).Piercing and explosive projectile according to Claim 3, characterized in that the front part of the tube (14) also comprises a conical part in the extension of the conical front parts (20) of the fins (15).
EP21202156.2A 2020-10-19 2021-10-12 Piercing and explosive projectile provided with a stabilisation tail Pending EP3985345A1 (en)

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Application Number Priority Date Filing Date Title
FR2010626A FR3115358B1 (en) 2020-10-19 2020-10-19 ARTIFICIAL AND EXPLOSIVE PROJECTILE WITH A STABILIZING FLAT

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EP3985345A1 true EP3985345A1 (en) 2022-04-20

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EP (1) EP3985345A1 (en)
FR (1) FR3115358B1 (en)
IL (1) IL287305A (en)

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SE2000234A1 (en) * 2020-12-14 2022-06-15 Saab Ab A fragmentation warhead a method of manufacturing of a fragmentation warhead

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US11639844B2 (en) 2023-05-02
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US20220214149A1 (en) 2022-07-07
FR3115358B1 (en) 2023-11-24

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