EP0314547B1 - Propulsive charge for munition comprising a finned projectile, and manufacturing method thereof - Google Patents

Propulsive charge for munition comprising a finned projectile, and manufacturing method thereof Download PDF

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Publication number
EP0314547B1
EP0314547B1 EP88402640A EP88402640A EP0314547B1 EP 0314547 B1 EP0314547 B1 EP 0314547B1 EP 88402640 A EP88402640 A EP 88402640A EP 88402640 A EP88402640 A EP 88402640A EP 0314547 B1 EP0314547 B1 EP 0314547B1
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EP
European Patent Office
Prior art keywords
projectile
charge
powder
cartridge
front part
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 - Lifetime
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EP88402640A
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German (de)
French (fr)
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EP0314547A1 (en
Inventor
Daniel Guenin
Raymond Mesnil
Joel Leblond
Marie-Christine Paris
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Giat Industries SA
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Giat Industries SA
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Priority to AT88402640T priority Critical patent/ATE102704T1/en
Publication of EP0314547A1 publication Critical patent/EP0314547A1/en
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Publication of EP0314547B1 publication Critical patent/EP0314547B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • F42B5/181—Caseless ammunition; Cartridges having combustible cases consisting of a combustible casing wall and a metal base; Connectors therefor
    • 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
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/067—Mounting or locking missiles in cartridge cases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/16—Cartridges, i.e. cases with charge and missile characterised by composition or physical dimensions or form of propellant charge, with or without projectile, or powder

Definitions

  • the present invention relates to a propellant charge for a munition comprising a feathered projectile, as well as its production method.
  • US-A-2,971,426 describes a method for producing a propellant charge of a munition provided with an arrow projectile. This loading is not carried out at any stage of the process in two distinct and isolated parts.
  • GB-A-2 136 929 describes a munition without a casing, the loading of which comprises two distinct and separate parts: a part on the projectile side and a propellant charge proper, generally clean of the preamble of the invention. However, the projectile and the propellant charge are successively introduced into the chamber of a weapon upon firing.
  • the aim sought here is to provide a family of projectiles of the same caliber whose total length is always equal to that of the propellant charge. This object is achieved by fixing a propellant charge part to the projectile. It then becomes possible to use different types of projectiles of the same caliber in a given weapon. The two parts of the ammunition remain separate.
  • Patent FR-A-2 229 037 describes an arrow munition in which the projectile is made integral with the casing by means of a connecting piece.
  • the free space between the tail and the socket is filled with powder. This space is isolated from the rest of the socket by a partition to prevent its flow.
  • the front part of the load is integrated from the start in the socket.
  • the present invention aims to remedy these drawbacks by proposing a propellant charge that is easy to implement, and easily adaptable to different types of ammunition as well as to their ballistic requirements, preventing any friction of powder grains.
  • the invention therefore relates to a propellant charge for a munition equipped with a tailed projectile, consisting of a front part and a rear part, the front part surrounding the tail of the projectile and the rear part encompassing a means of ignition, characterized in that the front part, integrated in a socket, is made integral with the projectile by a connecting means constituted by a fragmentable and / or combustible housing applied to the projectile, said housing being integrated in a recess of the socket .
  • the front part consists of a block of propellant powder agglomerated by means of a binder.
  • the front part consists of propellant powder in bulk, held in the housing by means of a fragmentable and / or combustible cover.
  • the front part of the load consists of propellant powder in bundles.
  • the front and rear parts are made of powder of a different nature.
  • An advantage of the present invention lies in the fact that the mounting of a munition comprising a feathered projectile avoids any friction of grains of powder.
  • Another advantage lies in the simplicity of carrying out the loading at reasonable economic conditions.
  • the loading of the ammunition comprises a front element 1a and a rear element 1b.
  • the element contains the tailed projectile 5, of which only the tail unit is shown, and the front part 6 of the load.
  • the element 1b comprises a socket 2 secured to a base 3.
  • An igniter tube 4 of known type is made integral with the base, for example by threading.
  • the socket 2 can be combustible and the metal base.
  • This sleeve receives the rear part 12 of the load either in the form of grain powder or in the form coated with a binder and cast in situ.
  • the socket is not completely filled with propellant powder, a height H being provided between the upper surface 13 of the part 12 and the lip 14.
  • a recess 10a is defined only by the wall of the socket 2.
  • the element la is in the form of a combustible case 7, made of the same material as that constituting the case, and made integral with the projectile 5 at a circular groove 19.
  • the case 7 is filled with a mass of powder, constituting the front part 6 of the propellant charge, which completely surrounds the tail of the projectile 5, and which is therefore integral with the latter.
  • the housing 7 is closed by a cover 8, of the same material, glued to the housing at the level of a constriction 9 of the latter, and carrying vents 11 whose role will be explained below.
  • the box 7 and the cover 8 thus constitute a means of connection between the front part 6 of the propellant charge and the projectile 5.
  • a munition is obtained, the propellant charge of which comprises at least two parts, the front part 6 of which is integral with the projectile, the connection means being constituted by the housing and the cover, and which includes the tail unit (here totally).
  • the tail of the projectile is surrounded by powder, so that there is no penetration with contact thereof in the second part of the load which is not secured to the projectile; any risk of ignition is thus still avoided when the projectile, containing the front part of the load, is put in place and secured, with the socket containing the rear part of the load.
  • the implementation of the invention does not cause any disturbance in the ignition of the propellant charge.
  • the box 7 is combustible and the vents 11 facilitate the transmission of flame from the rear part 12 of the load to the front part 6.
  • Figure 2 shows, before securing the shell and the projectile, a munition whose simplified section shows two alternative embodiments of the propellant charge according to the invention.
  • the differences with the embodiment of Figure 1 are only found at the front part 6 of the integral load of the projectile.
  • the rear part 12 of the load is identical to that previously described.
  • the front part 6 of the propellant charge is formed by a mass of powder agglomerated around the empennage by means of a binder, which thus constitutes the means of connection between this part 6 of the charge and the projectile 5.
  • the process for producing such a mass of powder, the characteristics of the binder and its shaping around the tailplane involve the technique, known to those skilled in the art, of frozen loads and will not be not described in more detail.
  • a housing 7 covering the mass of powder over all or part of its outer surface.
  • the housing will be made of combustible and / or fragmentable material as has already been described.
  • the projectile and the socket are assembled in a similar manner to that already described with reference to FIG. 1.
  • a recess 10a sufficient to allow the projectile and the socket 2 to be placed in and secured to one another is provided in the latter.
  • the use of a box 7 will facilitate the joining by gluing or crimping of the cartridge case 2 and projectile 5 while protecting the powder mass. In the absence of a housing, this mass of powder can be covered with a protective varnish against thermoinitiation.
  • the front part 6 of the load it is also possible to design the front part 6 of the load so that it only partially encompasses the tail. A free space will remain in the box 7, and it will then be useful to have a shim inside the box in order to maintain the axial symmetry of the first part of the load (which is essential in the case of feathered projectiles of the arrow type ).
  • the advantages from the point of view of safety described in the preamble will be guaranteed by the fact that, thanks to the invention, there is no penetration with contact of the tail in the rear part of the loading which is not secured to the projectile. There is no risk of friction and overheating of the propellant charge during the positioning of the projectile and its attachment to the socket.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Road Paving Structures (AREA)
  • Road Signs Or Road Markings (AREA)
  • Elimination Of Static Electricity (AREA)
  • Press Drives And Press Lines (AREA)
  • Magnetic Heads (AREA)

Abstract

The invention relates to a propulsive charge for ammunition comprising a finned projectile (5), consisting of a front part (6) and of a rear part (12), the front part surrounding the fin unit of the projectile (5) and the rear part (12) enclosing an ignition means (4). The rear part (12) is integrated in a case (2) and has a recess (10a), in which the front part (6) is engaged partially or completely in order to ensure that these two parts are fixed together. The recess (10a) is delimited by the case (2) alone or both by the case (2) and by the rear part (12) of the charge. The front part (6) is integrated in a housing (7) fitted on the projectile (5) and closed by means of a cover (8) having vents (11), said housing being fitted into the recess (10a) and forming a means for connecting the front part (6) of the charge to the projectile (5). The invention is used for ammunition of the finned arrow type. <IMAGE>

Description

La présente invention concerne un chargement propulsif pour une munition comportant un projectile empenné, ainsi que son procédé de réalisation.The present invention relates to a propellant charge for a munition comprising a feathered projectile, as well as its production method.

Les projectiles empennés du type flèche font aujourd'hui partie de la dotation normale en munitions des véhicules blindés, à l'intérieur desquels l'espace est compté. On a donc cherché à réduire l'encombrement de ces munitions sans pour autant nuire à leurs performances, donc sans réduire la quantité de poudre propulsive, ce qui a conduit à noyer l'empennage des projectiles dans le chargement propulsif. Pour effectuer ce chargement, deux procédés principaux sont utilisés à ce jour :

  • le premier consiste à verser la quantité de poudre nécessaire dans la douille et à faire pénétrer en force l'empennage du projectile dans celle-ci, cette opération pouvant éventuellement être facilitée par une mise en vibration de l'empennage. Ce procédé induit de gros risques pyrotechniques résultant des inévitables et importantes frictions entre l'empennage et la poudre propulsive. Il est également indispensable de prévoir dans la douille un volume libre, au dessus de la charge propulsive, qui soit supérieur au volume réel occupé par l'empennage, cela afin de permettre le calage du chargement par le projectile.
  • le second procédé consiste à assembler la douille et le projectile puis à introduire la poudre par l'orifice du tube porte-amorce; ce dernier est ensuite introduit en force dans le chargement, ce qui engendre également de gros risques de mise à feu inopinée dus aux frictions entre la poudre propulsive et le tube porte-amorce qui sont tous les deux des éléments pyrotechniques actifs; ce procédé n'autorise pas par ailleurs l'utilisation de tubes porte-amorces combustibles souples ou relativement flexibles.
The feathered arrow type projectiles are now part of the normal ammunition supply for armored vehicles, within which space is limited. We therefore sought to reduce the size of these munitions without affecting their performance, therefore without reducing the amount of propellant powder, which led to drown the tail of the projectiles in the propellant charge. To carry out this loading, two main processes are used to date:
  • the first consists in pouring the required quantity of powder into the socket and causing the tail of the projectile to force into it, this operation possibly being facilitated by vibrating the tail. This process induces large pyrotechnic risks resulting from the inevitable and significant friction between the tail and the propellant powder. It is also essential to provide a free volume in the socket, above the propellant charge, which is greater than the actual volume occupied by the tail, in order to allow the loading of the projectile to be wedged.
  • the second method consists in assembling the case and the projectile then in introducing the powder by the orifice of the primer holder tube; the latter is then forcefully introduced into the load, which also creates great risks of unexpected firing due to friction between the propellant powder and the primer-carrying tube which are both active pyrotechnic elements; this method does not otherwise allow the use of flexible or relatively flexible combustible primer-carrying tubes.

On connaît par le brevet US-A-4 619 201 un autre procédé de chargement dans lequel on compacte la charge propulsive autour de l'empennage au moyen de mors coulissant dans une matrice crénelée, puis on transfère l'ensemble projectile-charge propulsive dans la douille en le faisant coulisser dans la matrice.We know from patent US-A-4 619 201 another loading method in which the propellant charge is compacted around the tail by means of jaws sliding in a crenellated matrix, then the projectile-propellant charge assembly is transferred into the socket by sliding it into the die.

Le brevet US-A-2 971 426 décrit un procédé pour réaliser un chargement propulsif d'une munition dotée d'un projectile flèche. Ce chargement n'est réalisé à aucun stade du procédé en deux parties distinctes et isolées.US-A-2,971,426 describes a method for producing a propellant charge of a munition provided with an arrow projectile. This loading is not carried out at any stage of the process in two distinct and isolated parts.

Ces procédés présentent plusieurs défauts :

  • il provoque des frottements importants de la poudre sur la matrice et plus particulièrement sur les arêtes des mors, ce qui peut entraîner des risques d'inflammation lors du transfert de la charge propulsive dans la douille,
  • il est impossible de faire pénétrer un tube porte-amorce dans la charge compactée obtenue.
These processes have several shortcomings:
  • it causes significant friction of the powder on the matrix and more particularly on the edges of the jaws, which can lead to risks of inflammation during the transfer of the propellant charge into the socket,
  • it is impossible to penetrate a primer holder tube into the compacted charge obtained.

Le brevet GB-A-2 136 929 décrit une munition sans douille dont le chargement comprend deux parties distinctes et séparées : une partie côté projectile et une charge propulsive proprement dite, globalement propre du préambule de l'invention. Toutefois, le projectile et la charge propulsive sont introduits successivement dans la chambre d'une arme au moment du tir.GB-A-2 136 929 describes a munition without a casing, the loading of which comprises two distinct and separate parts: a part on the projectile side and a propellant charge proper, generally clean of the preamble of the invention. However, the projectile and the propellant charge are successively introduced into the chamber of a weapon upon firing.

Le but recherché ici est de fournir une famille de projectiles de même calibre dont la longueur totale soit toujours égale à celle de la charge propulsive. Ce but est atteint en fixant une partie de charge propulsive au projectile. Il devient alors possible d'utiliser différents types de projectiles de même calibre dans une arme donnée. Les deux parties de la munition restent séparées.The aim sought here is to provide a family of projectiles of the same caliber whose total length is always equal to that of the propellant charge. This object is achieved by fixing a propellant charge part to the projectile. It then becomes possible to use different types of projectiles of the same caliber in a given weapon. The two parts of the ammunition remain separate.

Le brevet FR-A-2 229 037 décrit une munition flèche dans laquelle le projectile est rendu solidaire de la douille au moyen d'une pièce de liaison. L'espace libre entre l'empennage et la douille est rempli de poudre. Cet espace est isolé du reste de la douille par une cloison de séparation pour interdire son écoulement. La partie avant du chargement est intégrée dès le départ dans la douille.Patent FR-A-2 229 037 describes an arrow munition in which the projectile is made integral with the casing by means of a connecting piece. The free space between the tail and the socket is filled with powder. This space is isolated from the rest of the socket by a partition to prevent its flow. The front part of the load is integrated from the start in the socket.

La présente invention vise à remédier à ces inconvénients en proposant un chargement propulsif facile à mettre en oeuvre, et aisément adaptable à différents types de munitions ainsi qu'à leurs exigences balistiques, interdisant toute friction de grains de poudre.The present invention aims to remedy these drawbacks by proposing a propellant charge that is easy to implement, and easily adaptable to different types of ammunition as well as to their ballistic requirements, preventing any friction of powder grains.

L'invention a donc pour objet un chargement propulsif pour une munition équipée d'un projectile empenné, constitué d'une partie avant et d'une partie arrière , la partie avant entourant l'empennage du projectile et la partie arrière englobant un moyen d'allumage, caractérisé en ce que la partie avant , intégrée dans une douille, est rendue solidaire du projectile par un moyen de liaison constitué par un boîtier fragmentable et/ou combustible appliqué sur le projectile, ledit boîtier étant intégré dans un évidement de la douille.The invention therefore relates to a propellant charge for a munition equipped with a tailed projectile, consisting of a front part and a rear part, the front part surrounding the tail of the projectile and the rear part encompassing a means of ignition, characterized in that the front part, integrated in a socket, is made integral with the projectile by a connecting means constituted by a fragmentable and / or combustible housing applied to the projectile, said housing being integrated in a recess of the socket .

La partie avant est constituée par un bloc de poudre propulsive agglomérée au moyen d'un liant.The front part consists of a block of propellant powder agglomerated by means of a binder.

La partie avant est constituée par de la poudre propulsive en vrac, maintenue dans le boîtier au moyen d'un couvercle fragmentable et/ou combustible.The front part consists of propellant powder in bulk, held in the housing by means of a fragmentable and / or combustible cover.

La partie avant du chargement est constituée par de la poudre propulsive en fagots.The front part of the load consists of propellant powder in bundles.

Les parties avant et arrière sont constituées de poudre de nature différente.The front and rear parts are made of powder of a different nature.

Le procédé de fabrication d'un chargement propulsif selon l'invention est caractérisé en ce que :

  • on solidarise, hors de la douille, la partie avant du chargement et l'empennage du projectile,
  • on dispose la partie arrière du chargement dans la douille, en laissant entre le sommet de celle-ci et le sommet de la partie arrière un évidement tel qu'il permette la mise en place et la solidarisation du projectile portant la partie avant du chargement et de la douille,
  • on procède à la mise en place et à la solidarisation du projectile et de la douille par collage.
The process for manufacturing a propellant charge according to the invention is characterized in that:
  • the front part of the load and the tail of the projectile are joined, outside the socket,
  • the rear part of the load is placed in the shell, leaving a recess between the top of the latter and the top of the rear part such that it allows the projectile carrying the front part of the load to be attached and secured together; from the socket,
  • we proceed to the establishment and securing of the projectile and the sleeve by gluing.

Un avantage de la présente invention réside dans le fait que le montage d'une munition comprenant un projectile empenné évite toute friction de grains de poudre.An advantage of the present invention lies in the fact that the mounting of a munition comprising a feathered projectile avoids any friction of grains of powder.

Un autre avantage réside dans la simplicité de réalisation du chargement à des conditions économiques raisonnables.Another advantage lies in the simplicity of carrying out the loading at reasonable economic conditions.

D'autres avantages de l'invention apparaîtront à la lecture du complément de description qui va suivre des modes particuliers de réalisation, description faite en regard des dessins annexés dans lesquels :

  • La figure 1 montre en coupe simplifiée une munition, représentée avant solidarisation de la douille et du projectile, et intégrant un premier mode de réalisation du chargement propulsif selon l'invention.
  • La figure 2 représente en coupe une variante.
Other advantages of the invention will appear on reading the additional description which follows modes individuals, description given with reference to the accompanying drawings in which:
  • Figure 1 shows a simplified section of a munition, shown before securing the socket and the projectile, and incorporating a first embodiment of the propellant charge according to the invention.
  • Figure 2 shows in section a variant.

En se reportant à la figure 1, on voit que le chargement de la munition comprend un élément avant la et un élément arrière 1b. L'élément la renferme le projectile empenné 5, dont seul l'empennage est représenté, et la partie avant 6 du chargement. L'élément 1b comprend une douille 2 solidaire d'un culot 3. Un tube allumeur 4 de type connu est rendu solidaire du culot, par exemple par filetage. La douille 2 peut être combustible et le culot métallique. Cette douille reçoit la partie arrière 12 du chargement soit sous forme de poudre en grain soit sous forme enrobée avec un liant et coulé in situ. La douille n'est pas complètement remplie de poudre propulsive, une hauteur H étant ménagée entre la surface supérieure 13 de la partie 12 et la lèvre 14. On délimite dans ce cas un évidement 10a uniquement par la paroi de la douille 2. L'élément la se présente sous la forme d'un boîtier 7 combustible, réalisé dans le même matériau que celui constituant la douille, et rendu solidaire du projectile 5 au niveau d'une gorge cirulaire 19. Le boîtier 7 est rempli d'une masse de poudre, constituant la partie avant 6 du chargement propulsif, qui entoure complètement l'empennage du projectile 5, et qui se trouve donc solidaire de ce dernier. Le boîtier 7 est fermé par un couvercle 8, en même matériau, collé au boîtier au niveau d'un rétreint 9 de ce dernier, et portant des évents 11 dont le rôle sera précisé plus loin. Le boîtier 7 et le couvercle 8 constituent ainsi un moyen de liaison entre la partie avant 6 du chargement propulsif et le projectile 5.Referring to Figure 1, it can be seen that the loading of the ammunition comprises a front element 1a and a rear element 1b. The element contains the tailed projectile 5, of which only the tail unit is shown, and the front part 6 of the load. The element 1b comprises a socket 2 secured to a base 3. An igniter tube 4 of known type is made integral with the base, for example by threading. The socket 2 can be combustible and the metal base. This sleeve receives the rear part 12 of the load either in the form of grain powder or in the form coated with a binder and cast in situ. The socket is not completely filled with propellant powder, a height H being provided between the upper surface 13 of the part 12 and the lip 14. In this case, a recess 10a is defined only by the wall of the socket 2. The element la is in the form of a combustible case 7, made of the same material as that constituting the case, and made integral with the projectile 5 at a circular groove 19. The case 7 is filled with a mass of powder, constituting the front part 6 of the propellant charge, which completely surrounds the tail of the projectile 5, and which is therefore integral with the latter. The housing 7 is closed by a cover 8, of the same material, glued to the housing at the level of a constriction 9 of the latter, and carrying vents 11 whose role will be explained below. The box 7 and the cover 8 thus constitute a means of connection between the front part 6 of the propellant charge and the projectile 5.

Le boîtier 7 porte un rétreint 10b sur une longueur L ; ce rétreint est sensiblement ajusté au diamètre intérieur de la douille 2, afin de permettre sa mise en place dans la douille. Les valeurs de L et de H sont choisies de telle sorte que la solidarisation du projectile 5 portant le boîtier 7 et de la douille soit possible, tout en respectant la longueur totale souhaitée pour la munition complète. La solidarisation est complétée par un moyen connu, par exemple par collage, sertissage ou rivetage. On met ainsi en évidence le procédé de réalisation du chargement propulsif selon l'invention ; ce procédé comprend les étapes suivantes :

  • Hors de la douille, on rend solidaire du projectile 5 une première partie du chargement, cela en fixant le boîtier 7 sur le projectile, en le remplissant de poudre, puis en fermant le boîtier au moyen du couvercle 8.
  • On remplit la douille 1 de poudre propulsive en laissant entre le sommet de la douille et le chargement un évidement tel que la mise en place du projectile portant le boîtier et sa solidarisation avec la douille soient possibles.
The housing 7 carries a constriction 10b over a length L; this constriction is substantially adjusted to the internal diameter of the sleeve 2, in order to allow it to be placed in the socket. The values of L and H are chosen so that the projectile 5 carrying the casing 7 and the socket are joined together, while respecting the total length desired for the complete munition. The joining is completed by a known means, for example by gluing, crimping or riveting. This highlights the method for producing the propellant charge according to the invention; this process includes the following steps:
  • Out of the sleeve, the first part of the charge is made integral with the projectile 5, this by fixing the casing 7 to the projectile, filling it with powder, then closing the casing by means of the cover 8.
  • The sleeve 1 is filled with propellant powder, leaving a recess between the top of the sleeve and the load such that the projectile carrying the housing and its connection with the sleeve are possible.

On obtient une munition dont le chargement propulsif comporte au moins deux parties, dont la partie avant 6 est solidaire du projectile, le moyen de liaison étant constitué par le boîtier et le couvercle, et qui englobe l'empennage (ici totalement).A munition is obtained, the propellant charge of which comprises at least two parts, the front part 6 of which is integral with the projectile, the connection means being constituted by the housing and the cover, and which includes the tail unit (here totally).

La poudre ayant été versée dans le boîtier, on ne fait pas pénétrer de force l'empennage dans celle-ci, et tout risque d'inflammation de ce fait est écarté.The powder having been poured into the housing, the empennage is not forced into it, and any risk of ignition thereby is eliminated.

De même, la poudre ayant été versée dans la douille 2 portant le tube allumeur 4, il n'a donc pas été nécessaire de faire pénétrer en force ce dernier dans la poudre, et tout risque d'inflammation est également écarté.Similarly, the powder having been poured into the socket 2 carrying the igniter tube 4, it was therefore not necessary to force the latter to penetrate into the powder, and any risk of ignition is also ruled out.

De plus, l'empennage du projectile est entouré de poudre, de telle sorte qu'il n'y a pas pénétration avec contact de celui-ci dans la deuxième partie du chargement qui n'est pas solidaire du projectile ; tout risque d'inflammation est ainsi encore évité lors de la mise en place et de la solidarisation du projectile, contenant la partie avant du chargement, avec la douille contenant la partie arrière du chargement.In addition, the tail of the projectile is surrounded by powder, so that there is no penetration with contact thereof in the second part of the load which is not secured to the projectile; any risk of ignition is thus still avoided when the projectile, containing the front part of the load, is put in place and secured, with the socket containing the rear part of the load.

De plus, la mise en oeuvre de l'invention n'entraîne aucune perturbation au niveau de l'allumage de la charge propulsive. En effet, le boîtier 7 est combustible et les évents 11 facilitent la transmission de flamme de la partie arrière 12 du chargement vers la partie avant 6.In addition, the implementation of the invention does not cause any disturbance in the ignition of the propellant charge. In fact, the box 7 is combustible and the vents 11 facilitate the transmission of flame from the rear part 12 of the load to the front part 6.

Il sera possible d'employer un boîtier et/ou un couvercle qui ne sont pas totalement combustibles, mais qui sont fragmentables, c'est-à-dire qui comportent un certain nombre d'amorces de faiblesse (non représentées ici) aptes à provoquer leur fragmentation sous l'action de la pression des gaz de combustion du chargement propulsif.It will be possible to use a box and / or a cover which are not completely combustible, but which are fragmentable, that is to say which comprise a certain number of weak primers (not shown here) capable of causing their fragmentation under the action of the pressure of the combustion gases of the propellant charge.

La figure 2 représente, avant solidarisation de la douille et du projectile, une munition dont la coupe simplifiée montre deux variantes de réalisation du chargement propulsif selon l'invention. Les différences avec le mode de réalisation de la figure 1 ne se trouvent qu'au niveau de la partie avant 6 du chargement solidaire du projectile. La partie arrière 12 du chargement est identique à celle précédemment décrite. Sur la demi-coupe de gauche, la partie avant 6 du chargement propulsif est constituée par une masse de poudre agglomérée autour de l'empennage au moyen d'un liant, qui constitue ainsi le moyen de liaison entre cette partie 6 du chargement et le projectile 5. Le procédé de réalisation d'une telle masse de poudre, les caractéristiques du liant et sa mise en forme autour de l'empennage font intervenir la technique, connue de l'homme de l'art, des chargements figés et ne seront pas décrits plus en détail.Figure 2 shows, before securing the shell and the projectile, a munition whose simplified section shows two alternative embodiments of the propellant charge according to the invention. The differences with the embodiment of Figure 1 are only found at the front part 6 of the integral load of the projectile. The rear part 12 of the load is identical to that previously described. On the left half-section, the front part 6 of the propellant charge is formed by a mass of powder agglomerated around the empennage by means of a binder, which thus constitutes the means of connection between this part 6 of the charge and the projectile 5. The process for producing such a mass of powder, the characteristics of the binder and its shaping around the tailplane involve the technique, known to those skilled in the art, of frozen loads and will not be not described in more detail.

Afin d'améliorer la tenue mécanique de la masse de poudre constituant la partie avant 6 du chargement propulsif, face aux contraintes dues à la manutention et à l'assemblage, il est possible de disposer un boîtier 7 recouvrant la masse de poudre sur tout ou partie de sa surface extérieure. Cette variante est figurée sur la demi-coupe de droite de la figure 2. Le boîtier sera réalisé en matériau combustible et/ou fragmentable comme cela a déjà été décrit. L'assemblage du projectile et de la douille est réalisé de façon analogue à celle déjà décrite à propos de la figure 1. Ainsi un évidement 10a, suffisant pour permettre la mise en place et la solidarisation du projectile et de la douille 2 est prévu dans cette dernière. L'emploi d'un boîtier 7 permettra de faciliter la solidarisation par collage ou sertissage de la douille 2 et du projectile 5 tout en protégeant la masse de poudre. En l'absence de boîtier, cette masse de poudre peut être recouverte d'un vernis protecteur contre la thermoinitiation.In order to improve the mechanical strength of the mass of powder constituting the front part 6 of the propellant charge, faced with the stresses due to handling and assembly, it is possible to have a housing 7 covering the mass of powder over all or part of its outer surface. This variant is shown in the right half-section of Figure 2. The housing will be made of combustible and / or fragmentable material as has already been described. The projectile and the socket are assembled in a similar manner to that already described with reference to FIG. 1. Thus a recess 10a, sufficient to allow the projectile and the socket 2 to be placed in and secured to one another is provided in the latter. The use of a box 7 will facilitate the joining by gluing or crimping of the cartridge case 2 and projectile 5 while protecting the powder mass. In the absence of a housing, this mass of powder can be covered with a protective varnish against thermoinitiation.

Il est possible à partir d'une géométrie de munition donnée de faire varier la masse totale du chargement propulsif et donc les performances balistiques de la munition. Il est possible par exemple de disposer dans la douille la partie arrière 12 du chargement conçue de telle sorte qu'elle n'ait aucun contact avec la partie avant après solidarisation du projectile 5 et de la douille. Il suffit de jouer sur la valeur de H supérieure à L.It is possible from a given munition geometry to vary the total mass of the propellant charge and therefore the ballistic performance of the ammunition. It is possible for example to have in the socket the rear part 12 of the load designed so that it has no contact with the front part after the projectile 5 and the socket are secured. It is enough to play on the value of H greater than L.

Il est possible également de concevoir la partie avant 6 du chargement de telle sorte qu'elle n'englobe que partiellement l'empennage. Un espace libre subsistera dans le boîtier 7, et il sera alors utile de disposer une cale à l'intérieur du boîtier afin de maintenir la symétrie axiale de la première partie du chargement (ce qui est indispensable dans le cas de projectiles empennés de type flèche). Dans tous les cas, les avantages du point de vue de la sécurité décrits dans le préambule se trouveront garantis par le fait que, grâce à l'invention, il n'y a pas pénétration avec contact de l'empennage dans la partie arrière du chargement qui n'est pas solidaire du projectile. Il n'y a aucun risque de frottements et d'échauffement du chargement propulsif au cours de la mise en place du projectile et de sa solidarisation avec la douille.It is also possible to design the front part 6 of the load so that it only partially encompasses the tail. A free space will remain in the box 7, and it will then be useful to have a shim inside the box in order to maintain the axial symmetry of the first part of the load (which is essential in the case of feathered projectiles of the arrow type ). In all cases, the advantages from the point of view of safety described in the preamble will be guaranteed by the fact that, thanks to the invention, there is no penetration with contact of the tail in the rear part of the loading which is not secured to the projectile. There is no risk of friction and overheating of the propellant charge during the positioning of the projectile and its attachment to the socket.

On peut réaliser diverses formes pour les deux parties du chargement propulsif, et il est possible en particulier de prévoir une partie arrière dont la face supérieure comporte une cuvette dans laquelle pénètrerait l'empennage après l'assemblage du projectile 5 et de la douille 2. Aucun échauffement n'est à craindre dans ce cas, car il n'y a pas contact entre l'empennage et la partie arrière du chargement.Various forms can be produced for the two parts of the propellant charge, and it is possible in particular to provide a rear part, the upper face of which comprises a bowl into which the tail unit would penetrate after the projectile 5 and the shell 2 have been assembled. No overheating is to be feared in this case, because there is no contact between the tail and the rear part of the load.

On peut réaliser également un chargement, du type de celui décrit sur la figure 2, et pour lequel H est légèrement inférieur à L, et la partie arrière 18 de l'empennage est affleurante au niveau de la face arrière 15 de la masse de poudre 6. L'assemblage du projectile et de la douille est possible avec une légère compression des deux parties du chargement. Aucun échauffement n'est encore à craindre dans ce cas, car, s'il y a effectivement contact, il n'y a pas pénétration de l'empennage dans la deuxième partie du chargement.It is also possible to carry out a loading, of the type described in FIG. 2, and for which H is slightly less than L, and the rear part 18 of the tail unit is flush with the rear face 15 of the mass. powder 6. Assembly of the projectile and the cartridge case is possible with a slight compression of the two parts of the load. No overheating is yet to be feared in this case, because, if there is actually contact, there is no penetration of the tail in the second part of the load.

Claims (6)

  1. Propellant charge for ammunition fitted with a finned projectile (5), consisting of a forward part (6) and a rear part (12) the forward part surrounding the empennage of the projectile (5) and the rear part (12) encompassing a means of detonation (4, characterised by the fact that the forward part (6), integrated in a cartridge (2) is attached to the projectile (5) by a connection piece consisting of a fragmentable and/or combustible box (7) mounted on the projectile (5), the said box being accommodated in a space (10a) in the cartridge (2).
  2. Charge according to claim 1, characterised by the fact that the forward part (6) consists of a block of propellant powder coated by means of a binder.
  3. Charge according to claim 1, characterised by the fact that the forward part (6) consists of propellant powder in bulk, retained in the box (7) by means of a fragmentable and/or combustible lid (8).
  4. Charge according to claim 3, characterised by the fact that the forward part (6) of the charge consists of propellant powder in stick form.
  5. Charge according to any of the claims 1 to 4, characterised by the fact that the forward and rear parts consist of powder of different kinds.
  6. Process for producing a propellant charge according to any of the preceding claims, characterised by the fact that:
    - away from the cartridge, the forward part (6) of the charge and the empennage of the projectile (5) are integrated;
    - the rear part (12) of the charge is positioned in the cartridge, leaving a space (10a) between the top of the said cartridge and the end of the rear part allowing the introduction of the projectile (5) carrying the forward part of the charge into the cartridge and their integration;
    - the projectile (5) is introduced and integrated with the cartridge (2) by bonding.
EP88402640A 1987-10-29 1988-10-20 Propulsive charge for munition comprising a finned projectile, and manufacturing method thereof Expired - Lifetime EP0314547B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88402640T ATE102704T1 (en) 1987-10-29 1988-10-20 PROJECTOR CHARGE FOR WING-STABILIZED PROJECTION AMMUNITION AND PROCESS FOR THEIR MANUFACTURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8714975 1987-10-29
FR8714975A FR2622687B1 (en) 1987-10-29 1987-10-29 PROPULSIVE LOADING FOR AMMUNITION COMPRISING A POINTED PROJECTILE AND ITS MANUFACTURING METHOD

Publications (2)

Publication Number Publication Date
EP0314547A1 EP0314547A1 (en) 1989-05-03
EP0314547B1 true EP0314547B1 (en) 1994-03-09

Family

ID=9356283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402640A Expired - Lifetime EP0314547B1 (en) 1987-10-29 1988-10-20 Propulsive charge for munition comprising a finned projectile, and manufacturing method thereof

Country Status (7)

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EP (1) EP0314547B1 (en)
AT (1) ATE102704T1 (en)
CA (1) CA1331315C (en)
DE (1) DE3888288T2 (en)
ES (1) ES2051878T3 (en)
FR (1) FR2622687B1 (en)
IL (1) IL88235A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179250A (en) * 1989-10-19 1993-01-12 Olin Corporation Segmented cartridge assembly
DE4020691A1 (en) * 1990-06-29 1992-01-02 Dynamit Nobel Ag WING STABILIZED SHELL
DE4041611C2 (en) * 1990-12-22 1997-11-27 Rheinmetall Ind Ag Split ammunition
FR2672674B1 (en) * 1991-02-11 1995-01-13 Giat Ind Sa CONTAINER PROVIDED WITH ELECTRICAL CONNECTION MEANS.
US5353710A (en) * 1991-02-11 1994-10-11 Giat Industries Container fitted with electrical connecting means
DE4138269C2 (en) * 1991-11-21 1998-01-15 Rheinmetall Ind Ag ammunition
FR2710975B1 (en) * 1993-10-04 1995-12-08 Giat Ind Sa Artillery ammunition element and ammunition obtained by assembling a plurality of such elements.
FR2763392B1 (en) 1997-05-15 1999-06-11 Giat Ind Sa BOX FOR PROPULSIVE CHARGE
DE19950002A1 (en) * 1999-10-15 2001-04-19 Diehl Stiftung & Co Projectile acceleration device
FR2806789B1 (en) 2000-03-23 2002-06-07 Giat Ind Sa IGNITION TUBE FOR ARTILLERY AMMUNITION
DE10055068B4 (en) * 2000-11-07 2006-08-17 Rheinmetall Waffe Munition Gmbh cartridge
FR2849179B1 (en) 2002-12-18 2006-06-30 Giat Ind Sa MUNITION WITHOUT SLEEVE AND METHOD FOR MOUNTING SUCH AMMUNITION
FR2869101B1 (en) 2004-04-15 2006-06-02 Giat Ind Sa MUNITION WITHOUT SLEEVE AND METHOD FOR MOUNTING SUCH AMMUNITION
FR2888924B1 (en) 2005-07-25 2007-08-24 Giat Ind Sa METHOD OF MOUNTING MUNITION

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2323244C3 (en) * 1973-05-09 1979-04-19 Rheinmetall Gmbh, 4000 Duesseldorf Wing-stabilized sub-caliber bullet
FR2343987A1 (en) * 1976-03-08 1977-10-07 France Etat Tubular primer for artillery ammunition propellant - has axial bore and side vents through combustible ensuring uniform ignition
DE3309288A1 (en) * 1983-03-16 1984-09-20 Diehl GmbH & Co, 8500 Nürnberg SLEEVELESS AMMUNITION FOR MACHINE ARMS
FR2587329B1 (en) * 1985-09-19 1989-05-12 Poudres & Explosifs Ste Nale BINDING-FILLER ADHESION AND PROPULSIVE COMPOSITION CONTAINING THE SAME

Also Published As

Publication number Publication date
EP0314547A1 (en) 1989-05-03
IL88235A0 (en) 1989-06-30
DE3888288T2 (en) 1994-08-04
FR2622687B1 (en) 1993-05-28
ATE102704T1 (en) 1994-03-15
ES2051878T3 (en) 1994-07-01
FR2622687A1 (en) 1989-05-05
CA1331315C (en) 1994-08-09
DE3888288D1 (en) 1994-04-14
IL88235A (en) 1993-02-21

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