EP0256894B1 - Recoilless arms or launching systems - Google Patents

Recoilless arms or launching systems Download PDF

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Publication number
EP0256894B1
EP0256894B1 EP19870401184 EP87401184A EP0256894B1 EP 0256894 B1 EP0256894 B1 EP 0256894B1 EP 19870401184 EP19870401184 EP 19870401184 EP 87401184 A EP87401184 A EP 87401184A EP 0256894 B1 EP0256894 B1 EP 0256894B1
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EP
European Patent Office
Prior art keywords
projectile
weapon
ballast
launcher system
wires
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.)
Expired
Application number
EP19870401184
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German (de)
French (fr)
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EP0256894A1 (en
Inventor
François Arene
Bernard Castagner
Claude Waitzenegger
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Societe dEtudes de Realisations et dApplications Techniques SA SERAT
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Societe dEtudes de Realisations et dApplications Techniques SA SERAT
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Publication of EP0256894A1 publication Critical patent/EP0256894A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A1/00—Missile propulsion characterised by the use of explosive or combustible propellant charges
    • F41A1/08—Recoilless guns, i.e. guns having propulsion means producing no recoil
    • F41A1/10—Recoilless guns, i.e. guns having propulsion means producing no recoil a counter projectile being used to balance recoil

Definitions

  • the present invention relates to improvements made to recoilless weapons, which can be fired from a partially confined and protected space, as well as to all weapons for which it is desired to limit the ergonomic effects of the environment due to noise, shock, toxicity or the "signature" of the propellants.
  • the invention overcomes these drawbacks.
  • a launching weapon without projectile recoil comprising a propellant gargousse, placed in a central position in a tube and interposed between on the one hand the projectile and on the other hand a ballast which provides compensation for the recoil pulse caused by launching the projectile.
  • EP-A1 0 027 418 describes a device of this type. This has the drawback of comprising a piston which seals the propellant charge from the ballast in a leaktight manner, which must be braked and stopped at the rear end of the launching tube.
  • the invention provides improvements to this type of weapon and it is characterized in that the ballast is constituted by a bundle of lungitudinal threads whose plastic and aerodynamic characteristics are chosen so that their ejection provides only effects rear limited and which are joined at their base so as to ensure, during their journey in the tube, the rear sealing of a chamber, of variable volume, located between the projectile and the ballast.
  • the example treated relates more particularly to an individual anti-tank or anti-armored portable infantry weapon, without recoil, which can be fired from a partially confined space.
  • the invention also applies, without departing from its scope, whatever its vocation, launching projectiles, missiles or rockets, fired blow by blow or in burst, fired from the shoulder of a shooter or from a single or multiple mount, which can be mounted on a vehicle, ship or aircraft.
  • the weapon's launch tube 1, FIG. 1 is preferably made of composite material, based on glass fiber, aramid, carbon, etc., used either by filament winding, or by injection on a "braid", either by "pultrusion".
  • this tube 1 can also be made of metal, fabric, "sandwich” structure, or any other.
  • the launch tube 1 is equipped, in particular with a firing device 2, which is preferably either percussion, causing the ignition of the gargousse 4 by percussion of a primer 11, or with electric impulse, generating the ignition of the gargousse 4 by battery discharge in an igniter 11, directly or through a capacitor or a voltage booster.
  • a firing device 2 which is preferably either percussion, causing the ignition of the gargousse 4 by percussion of a primer 11, or with electric impulse, generating the ignition of the gargousse 4 by battery discharge in an igniter 11, directly or through a capacitor or a voltage booster.
  • this device can be of any other type (piezoelectric, optoelectronic, ...) without departing from the scope of the invention.
  • the launch tube 1 of the weapon contains the projectile 3, on the one hand and the divided ballast 5 on the other hand, said ballast 5 playing the role of a rear piston; the projectile 3 and the ballast 5, according to the invention, delimit the central combustion chamber 22 in which the gargousse 4 is housed.
  • the projectile 3 comprises the contactor warhead 6, the military charge 7, the safety rocket 8, the base of the rear body 9, the tail, preferably deployable, 10.
  • the rear body base 9 may be hollow, hence a better possible adjustment of the central combustion chamber 22 according to the invention, for the gargousse 4, without knowing how to lengthen the launch tube 1, or reduce stability (static margin) of the projectile.
  • the projectile 3 can also include any other equipment: cap detection or localization device, propellant charge, guidance, trigger for subsequent operation, system for overflight attack, etc.
  • the gargousse 4 comprises a primer or an igniter 11, the propellant 12 contained in a case 13 and a confinement according to the invention in compressible material 14 (for example, expanded materials or polyethylene, polyurethane, PVC foam, etc.) . It is this confinement which ensures, according to the invention, the pre-established evolution of the volume of the central chamber 22 of the gargousse 4; Without departing from the scope of the invention, the gargousse can be introduced into an external pocket 15, to complete this confinement.
  • compressible material 14 for example, expanded materials or polyethylene, polyurethane, PVC foam, etc.
  • the gargousse 4 can have another organization assuring it its original character of being of evolving volume.
  • the divided ballast 5 comprises according to the invention, a bundle of threads 16 (for example threads of polyamide, of polyethylene, etc.). These wires are assembled at the head 17, preferably by welding, gluing, inhibiting, tightening, etc.
  • the divided ballast 5 according to the invention may also comprise a sole made of flexible material 18 (produced for example by dipping or overmolding, in a polyurethane resin, silicone, etc.), with the aim of improving the rear sealing of the chamber combustion of said gargousse 4, after bursting of its confinement.
  • the propellant 12 is ignited and has produced gases, after the initiation of the primer or igniter 11.
  • the internal wall 19 of the compressible confinement 20 is then expanded, and said confinement 20 is compressed and resists the rise in internal pressure.
  • the device according to the invention makes it possible to delay in a pre-established manner the increase in pressure in the central chamber 22, the elevation and the expansion of the propellant particles in the central chamber, of variable volume, located between the projectile 3 and the ballast 5. In particular, it ensures better ignition of all of the propellant particles. This results in better system performance and better reproducibility of projectile ejection speeds.
  • the combustion of the propellant 12 contained in the gargousse 4 has generated gases which fill said central chamber 22 according to the invention; these gases propel the projectile 3 and the ballast 5 according to the law of variation of the quantities of movement.
  • the good axial strength of the wires 16 of the ballast 5 according to the invention allows a regular and axialized exit of said ballast.
  • ballast 5 also comes out of the tube, deploys and bursts under the aerodynamic effect.
  • the large lift of the ballast wires 16 according to the invention ensures, according to the invention, rapid braking and satisfactory radial dispersion.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

La présente invention concerne des perfectionnements apportés aux armes sans recul, tirables depuis un espace partiellement confiné et protégé, ainsi qu'à toutes les armes dont on veut limiter les effets ergonomiques d'environnement dûs au bruit, au choc, à la toxicité ou à la "signature" des gaz de propulsion.The present invention relates to improvements made to recoilless weapons, which can be fired from a partially confined and protected space, as well as to all weapons for which it is desired to limit the ergonomic effects of the environment due to noise, shock, toxicity or the "signature" of the propellants.

Lors du tir d'un projectile, l'accélération est pratiquement toujours assurée par les effets de combustion d'une poudre. Lorsque les gaz générés par cette combustion (qui comprend au moins deux étapes : combustion puis détente, selon les lois connues de la thermodynamique), sortent de l'enceinte dans laquelle se produit le phénomène (tube de lancement, propulseur à tuyère, gargousse, "chambre" ...) (cas .gënéral usuel), ils créent des contraintes. Ces contraintes sont, en particulier, outre l'impulsion de recul :

  • - le bruit et les effets mécaniques de l'onde de pression ;
  • - la lueur (repérable par l'ennemi) ;
  • - les fumées nocives ;
  • - les effets thermiques;
  • - la toxicité éventuelle des gaz produits.
When firing a projectile, acceleration is almost always ensured by the combustion effects of a powder. When the gases generated by this combustion (which includes at least two stages: combustion then expansion, according to the known laws of thermodynamics), leave the enclosure in which the phenomenon occurs (launch tube, nozzle propellant, gargoyle, "room" ...) (usual case), they create constraints. These constraints are, in particular, in addition to the backward impulse:
  • - noise and mechanical effects of the pressure wave;
  • - glow (detectable by the enemy);
  • - harmful fumes;
  • - thermal effects;
  • - the possible toxicity of the gases produced.

L'invention permet de supprimer ces inconvénients.The invention overcomes these drawbacks.

Elle peut notamment s'appliquer aux armes décrites dans les brevets suivants de la demanderesse: brevet français N° 7 928 780 déposé le 22 novembre 1979 (FR-A 2 470 358), brevet français N° 8 217 460 déposé le 19 octobre 1982 (FR-A 2 534 681) et sa première addition N° 8 506 939 du 7 mai 1985 (FR-A 2 581 748).It can in particular apply to the weapons described in the following patents of the plaintiff: French patent N ° 7,928,780 filed on November 22, 1979 (FR-A 2,470,358), French patent N ° 8,217,460 filed on October 19, 1982 (FR-A 2,534,681) and its first addition No. 8,506,939 of May 7, 1985 (FR-A 2,581,748).

Ces publications décrivent une arme lanceur sans recul de projectiles, comportant une gargousse propulsive, placée en position centrale dans un tube et interposée entre d'une part le projectile et d'autre part un lest qui assure la compensation de l'impulsion de recul provoquée par le lancement du projectile.These publications describe a launching weapon without projectile recoil, comprising a propellant gargousse, placed in a central position in a tube and interposed between on the one hand the projectile and on the other hand a ballast which provides compensation for the recoil pulse caused by launching the projectile.

La publication EP-A1 0 027 418 décrit un dispositif de ce type. Celui-ci présente l'inconvénient de comporter un piston séparant de façon étanche la charge propulsive du lest, qu'il faut freiner et arrêter à l'extrémité arrière du tube de lancement.The publication EP-A1 0 027 418 describes a device of this type. This has the drawback of comprising a piston which seals the propellant charge from the ballast in a leaktight manner, which must be braked and stopped at the rear end of the launching tube.

L'invention apporte des perfectionnements à ce type d'arme et elle est caractérisée en ce que le lest est constitué par un fagot de fils lungitudinaux dont les caractéristiques plastiques et aérodynamiques sont choisies de façon à ce que leur éjection n'apporte que des effets arrière limités et qui sont réunis à leur base de manière à assurer, au cours de leur parcours dans le tube, l'étanchéité arrière d'une chambre, de volume variable, située entre le projectile et le lest.The invention provides improvements to this type of weapon and it is characterized in that the ballast is constituted by a bundle of lungitudinal threads whose plastic and aerodynamic characteristics are chosen so that their ejection provides only effects rear limited and which are joined at their base so as to ensure, during their journey in the tube, the rear sealing of a chamber, of variable volume, located between the projectile and the ballast.

Les divers caractéristiques et avantages de l'invention ressortiront de la description faite ci-après en référence aux dessins qui en illustrent des exemples de réalisation non limitatifs.The various characteristics and advantages of the invention will emerge from the description given below with reference to the drawings which illustrate nonlimiting exemplary embodiments.

Il est bien précisé qu'il s'agit uniquement d'exemples et que tous autres modes de construction, proportions, formes, matériaux, dispositions, peuvent être également utilisés sans sortir du cadre de l'invention.It is clearly specified that these are only examples and that all other modes of construction, proportions, shapes, materials, arrangements, can also be used without departing from the scope of the invention.

L'exemple traité se rapporte plus spécialement à une arme individuelle antichar ou antiblindé portable d'infanterie, sans recul, tirable depuis un espace partiellement confiné.The example treated relates more particularly to an individual anti-tank or anti-armored portable infantry weapon, without recoil, which can be fired from a partially confined space.

Il est précisé que l'invention s'applique également, sans sortir de son cadre, quelle que soit sa vocation, lançant des projectiles, missiles ou roquettes, tirés coup par coup ou en rafale, tirée depuis l'épaule d'un tireur ou depuis un affût simple ou multiple, qui peut être monté sur un véhicule, un navire ou sur un aéronef.It is specified that the invention also applies, without departing from its scope, whatever its vocation, launching projectiles, missiles or rockets, fired blow by blow or in burst, fired from the shoulder of a shooter or from a single or multiple mount, which can be mounted on a vehicle, ship or aircraft.

Sur les dessins annexés :In the accompanying drawings:

  • La figure 1 représente une vue en coupe longitudinale d'une arme antichar, sans recul, portable d'infanterie, selon l'invention ;FIG. 1 represents a view in longitudinal section of an anti-tank weapon, without recoil, portable infantry, according to the invention;
  • La figure 2 représente une vue en coupe longitudinale de la chambre centrale et de la gargousse, pendant la phase d'allumage de l'arme, sans recul, selon l'invention ;FIG. 2 represents a view in longitudinal section of the central chamber and of the gargoyle, during the ignition phase of the weapon, without recoil, according to the invention;
  • La figure 3 représente une vue longitudinale de l'arme sans recul selon l'invention, aux environs de la fin du parcours du projectile dans ladite arme ;FIG. 3 represents a longitudinal view of the recoilless weapon according to the invention, around the end of the course of the projectile in said weapon;
  • La figure 4 représente une vue en coupe longitudinale de l'arme sans recul selon l'invention, après la sortie du projectile à la bouche, et la dispersion du lest antirecul objet de l'invention.FIG. 4 represents a view in longitudinal section of the recoilless weapon according to the invention, after the projectile has left the mouth, and the anti-kickback ballast object of the invention has dispersed.

Le tube de lancement 1 de l'arme, figure 1, est préférentiellement réalisé en matériau composite, à base de fibre de verre, aramide, carbone ..., mis en oeuvre soit par enroulement filamentaire, soit par injection sur "tresse", soit par "pultrusion". Bien entendu, ce tube 1 peut aussi être réalisé en métal, tissu, structure "sandwich", ou tout autre.The weapon's launch tube 1, FIG. 1, is preferably made of composite material, based on glass fiber, aramid, carbon, etc., used either by filament winding, or by injection on a "braid", either by "pultrusion". Of course, this tube 1 can also be made of metal, fabric, "sandwich" structure, or any other.

Le tube de lancement 1 est équipé, en particulier d'un dispositif demise à feu 2, qui est préférentiellement soit à percussion, engendrant l'allumage de la gargousse 4 par percussion d'une amorce 11, soit à impulsion électrique, engendrant l'allumage de la gargousse 4 par décharge de pile dans un inflammateur 11, directement ou au travers d'un condensateur ou d'un élévateur de tension. Bien entendu, ce dispositif peut être d'un tout autre type (piézo-électrique, optoélectronique, ...) sans sortir du cadre de l'invention.The launch tube 1 is equipped, in particular with a firing device 2, which is preferably either percussion, causing the ignition of the gargousse 4 by percussion of a primer 11, or with electric impulse, generating the ignition of the gargousse 4 by battery discharge in an igniter 11, directly or through a capacitor or a voltage booster. Of course, this device can be of any other type (piezoelectric, optoelectronic, ...) without departing from the scope of the invention.

Le tube de lancement 1 de l'arme contient le projectile 3, d'une part et le lest divisé 5 d'autre part, ledit lest 5 jouant le rôle d'un piston arrière ; le projectile 3 et le lest 5, selon l'invention, délimitent la chambre centrale 22 de combustion dans laquelle est logée la gargousse 4.The launch tube 1 of the weapon contains the projectile 3, on the one hand and the divided ballast 5 on the other hand, said ballast 5 playing the role of a rear piston; the projectile 3 and the ballast 5, according to the invention, delimit the central combustion chamber 22 in which the gargousse 4 is housed.

Le projectile 3 comporte l'ogive contacteur 6, la charge militaire 7, la fusée à sécurités 8, le culot du corps arrière 9, l'empennage, de préférence dé- ployable, 10. Selon une des caractéristiques de l'invention, le culot du corps arrière 9 peut être creux d'où un meilleur réglage possible de la chambre centrale de combustion 22 selon l'invention, pour la gargousse 4, sans savoir à allonger le tube de lancement 1, ni réduire la stabilité (marge statique) du projectile.The projectile 3 comprises the contactor warhead 6, the military charge 7, the safety rocket 8, the base of the rear body 9, the tail, preferably deployable, 10. According to one of the characteristics of the invention, the rear body base 9 may be hollow, hence a better possible adjustment of the central combustion chamber 22 according to the invention, for the gargousse 4, without knowing how to lengthen the launch tube 1, or reduce stability (static margin) of the projectile.

Sans sortir du cadre de l'invention, le projectile 3 peut aussi comprendre tout autre équipement : capteur de détection ou de localisation, charge propulsive, guidage, déclencheur d'un fonctionnement subséquent, système pour attaque en survol, etc.Without departing from the scope of the invention, the projectile 3 can also include any other equipment: cap detection or localization device, propellant charge, guidance, trigger for subsequent operation, system for overflight attack, etc.

La gargousse 4 comprend une amorce ou un inflammateur 11, le propergol 12 contenu dans un étui 13 et un confinement selon l'invention en matière compressible 14 (par exemple, matériaux expansés ou mousse de polyéthylène, de polyuréthane, PVC, ...). C'est ce confinement qui assure, selon l'invention, l'évolutiohn préétablie du volume de la chambre centrale 22 de la gargousse 4 ; sans sortir du cadre de l'invention, la gargousse peut être introduite dans une poche extérieure 15, pour compléter ce confinement.The gargousse 4 comprises a primer or an igniter 11, the propellant 12 contained in a case 13 and a confinement according to the invention in compressible material 14 (for example, expanded materials or polyethylene, polyurethane, PVC foam, etc.) . It is this confinement which ensures, according to the invention, the pre-established evolution of the volume of the central chamber 22 of the gargousse 4; Without departing from the scope of the invention, the gargousse can be introduced into an external pocket 15, to complete this confinement.

Sans sortir du cadre de l'invention, la gargousse 4 peut disposer d'une autre organisation lui assurant son caractère original d'être à volume évolutif.Without departing from the scope of the invention, the gargousse 4 can have another organization assuring it its original character of being of evolving volume.

Le lest divisé 5 comprend selon l'invention, un fagot de fils 16 (par exemple fils de polyamide, de polyéthylène, ...). Ces fils sont assemblés en tête 17, préférentiellement par soudure, collage, inhibage, serrage ...The divided ballast 5 comprises according to the invention, a bundle of threads 16 (for example threads of polyamide, of polyethylene, etc.). These wires are assembled at the head 17, preferably by welding, gluing, inhibiting, tightening, etc.

Le lest divisé 5 selon l'invention peut aussi comprendre une semelle en matériau souple 18 (réalisée par exemple par trempage ou surmoulage, dans une résine polyuréthane, silicone ...), dans le but d'améliorer l'étanchéité arrière de la chambre de combustion de ladite gargousse 4, après éclatement de son confinement.The divided ballast 5 according to the invention may also comprise a sole made of flexible material 18 (produced for example by dipping or overmolding, in a polyurethane resin, silicone, etc.), with the aim of improving the rear sealing of the chamber combustion of said gargousse 4, after bursting of its confinement.

Selon les figures 1 et 2 :According to Figures 1 and 2:

Le propergol 12 est allumé et a engendré des gaz, après l'initiation de l'amorce ou de l'inflammateur 11.The propellant 12 is ignited and has produced gases, after the initiation of the primer or igniter 11.

La paroi interne 19 du confinement compressible 20 est alors dilatée, et ledit confinement 20 est comprimé et résiste à l'élévation de pression interne.The internal wall 19 of the compressible confinement 20 is then expanded, and said confinement 20 is compressed and resists the rise in internal pressure.

Ainsi, le dispositif selon l'invention permet de retarder d'une manière préétablie l'accroissement de pression dans la chambre centrale 22, l'élévation et l'expansion des particules de propergol dans la chambre centrale, de volume variable, située entre le projectile 3 et le lest 5. Il assure notamment un meilleur allumage de l'ensemble des particules de propergol. Il en résulte un meilleur rendement du système et une meilleure reproductibilité des vitesses d'éjection du projectile.Thus, the device according to the invention makes it possible to delay in a pre-established manner the increase in pressure in the central chamber 22, the elevation and the expansion of the propellant particles in the central chamber, of variable volume, located between the projectile 3 and the ballast 5. In particular, it ensures better ignition of all of the propellant particles. This results in better system performance and better reproducibility of projectile ejection speeds.

Selon les figures 1 et 3 :According to Figures 1 and 3:

La combustion du propergol 12 contenu dans la gargousse 4 a engendré des gaz qui remplissent ladite chambre centrale 22 selon l'invention ; ces gaz propulsent le projectile 3 et le lest 5 selon la loi de variation des quantités de mouvement.The combustion of the propellant 12 contained in the gargousse 4 has generated gases which fill said central chamber 22 according to the invention; these gases propel the projectile 3 and the ballast 5 according to the law of variation of the quantities of movement.

La bonne tenue axiale des fils 16 du lest 5 selon l'invention permet une sortie régulière et axialisée dudit lest.The good axial strength of the wires 16 of the ballast 5 according to the invention allows a regular and axialized exit of said ballast.

Enfin, en se référant à la figure 4, on observe, à gauche, que le projectile 3 sort du tube 1, et que son empennage 10 se déploie.Finally, with reference to FIG. 4, it can be seen, on the left, that the projectile 3 leaves the tube 1, and that its tail 10 is deployed.

Du côté droit du dessin, on voit que le lest 5 sort aussi du tube, se déploie et éclate sous l'effet aérodynamique. La grande portance des fils 16 du lest selon l'inveniton assure, selon l'invention, un freinage rapide et une dispersion radiale satisfaisante.On the right side of the drawing, we see that the ballast 5 also comes out of the tube, deploys and bursts under the aerodynamic effect. The large lift of the ballast wires 16 according to the invention ensures, according to the invention, rapid braking and satisfactory radial dispersion.

Dans le cadres d'un tir avec un obstacle arrière placé à courte distance (2 ou 3 mètres par exemple), le rebondissement de ces fils 16 est très limité et ne peut blesser le tireur ; la zone de danger en arrière de l'arme selon l'invention est donc très réduite.In the context of a shot with a rear obstacle placed at a short distance (2 or 3 meters for example), the rebound of these wires 16 is very limited and cannot injure the shooter; the danger zone behind the weapon according to the invention is therefore very small.

En définitive, l'arme selon l'invention permet d'avoir des effets faibles sur l'environnement, d'où, outre la compensation du recul par le moyen original et efficace des fils 16 selon l'invention :

  • - peu de bruit ;
  • - peu de fumée ;
  • - peu de gaz toxique ;
  • - peu d'effets mécaniques arrière.
Ultimately, the weapon according to the invention makes it possible to have weak effects on the environment, hence, in addition to compensating for recoil by the original and effective means of the wires 16 according to the invention:
  • - little noise;
  • - little smoke;
  • - little toxic gas;
  • - few mechanical rear effects.

Il demeure bien entendu que la présente invention n'est pas limitée aux exemples de réalisation décrits ci-dessus mais qu'elle en englobe toutes les variantes.It remains to be understood that the present invention is not limited to the embodiments described above but that it encompasses all variants thereof.

Claims (6)

1. Weapon or launcher system without projectile recoil, of the type having a propulsive charge (4), placed centrally in a tube (1) and interposed between, on the one hand the projective (3) and on the other a ballast (5), said ballast ensuring a compensation of the recoil impulsion caused by the launching of the projectile, characterized in that the ballast is constituted by a group of longitudinal wires (16), whose plastic and aerodynamic characteristics are chosen in such a way that their ejection only causes limited rearward effects and which are joined at their base in such a way as to ensure, during their passage in tube (1), the rear sealing of a variable volume chamber (22) located between the projectile (3) and the ballast (5).
2. Weapon or projectile launcher system according to claim 1, characterized in that the joining into a group of the wires (16) for ensuring the sealing of the central chamber (22) is brought about by the hot auto-welding of their base (17), or by potting a resin shoe (18).
3. Weapon or projectile launcher system according to either of the claims 1 and 2, characterized in that the group of wires (16) are made from polyamide or polyethylene.
4. Weapon or projectile launcher system according to any one of the preceding claims, characterized in that the propulsive charge (4) has a compressible confinement (14) with a predetermined evolutive volume for making reliable and improving the ignition, said confinement being made from polyethylene foam, polyurethane or polyvinyl chloride, with or without an additional outer pocket.
5. Weapon or projectile launcher system according to any one of the preceding claims, characterized in that the projectile has a base or hollow body ensuring an extension of the combustion chamber.
EP19870401184 1986-07-23 1987-05-26 Recoilless arms or launching systems Expired EP0256894B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8610680A FR2602040B1 (en) 1986-07-23 1986-07-23 IMPROVEMENTS IN OR RELATING TO PROJECTILES WITHOUT RECOIL ARMS OR LAUNCHING SYSTEMS
FR8610680 1986-07-23

Publications (2)

Publication Number Publication Date
EP0256894A1 EP0256894A1 (en) 1988-02-24
EP0256894B1 true EP0256894B1 (en) 1989-10-18

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EP19870401184 Expired EP0256894B1 (en) 1986-07-23 1987-05-26 Recoilless arms or launching systems

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EP (1) EP0256894B1 (en)
DE (1) DE3760832D1 (en)
FR (1) FR2602040B1 (en)

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GB9020378D0 (en) * 1990-09-18 1990-10-31 Richmond Electronics & Enginee A device for firing a projectile
GB9021060D0 (en) * 1990-09-27 1990-11-07 Secr Defence Double piston propulsion unit
GB2264351B (en) * 1990-09-27 1994-03-16 Secr Defence Double piston propulsion unit
GB2281119B (en) * 1993-08-17 1998-03-25 Gordon Findlater Sound moderator
SE504130C2 (en) * 1995-05-11 1996-11-18 Bofors Ab Ways to dampen sound pressure when firing robots
FR2770637B1 (en) 1997-11-03 1999-12-03 Giat Ind Sa PROJECTILE WITH SHAPED LOAD AND WEAPON SYSTEM HAVING SUCH A PROJECTILE
US6631668B1 (en) * 2000-11-10 2003-10-14 David Wilson Recoilless impact device
RU2503909C1 (en) * 2012-07-12 2014-01-10 Федеральное государственное казенное учреждение "Войсковая часть 44239" Recoilless rifle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4943437B1 (en) * 1970-07-23 1974-11-21
DE2553201C2 (en) * 1975-11-27 1984-05-10 Rheinmetall GmbH, 4000 Düsseldorf Recoil-free and bang-free projectile
FR2467380B1 (en) * 1979-10-10 1986-04-18 Europ Propulsion DEVICE FOR SHOOTING WITHOUT EJECTING GAS TO THE REAR, OR BACK-UP

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DE3760832D1 (en) 1989-11-23
EP0256894A1 (en) 1988-02-24
FR2602040B1 (en) 1988-11-10
FR2602040A1 (en) 1988-01-29

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