EP0643821B1 - Submunition locating device - Google Patents

Submunition locating device Download PDF

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Publication number
EP0643821B1
EP0643821B1 EP94905749A EP94905749A EP0643821B1 EP 0643821 B1 EP0643821 B1 EP 0643821B1 EP 94905749 A EP94905749 A EP 94905749A EP 94905749 A EP94905749 A EP 94905749A EP 0643821 B1 EP0643821 B1 EP 0643821B1
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EP
European Patent Office
Prior art keywords
bar
bars
contact
block
envelope
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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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EP94905749A
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German (de)
French (fr)
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EP0643821A1 (en
Inventor
Dominique Dion
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Giat Industries SA
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Giat Industries SA
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    • 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
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile

Definitions

  • the field of the present invention is that of wedging devices for submunitions placed inside the shell of a projectile.
  • projectiles intended to transport submunitions can be of the artillery shell, missile, rocket or mortar projectile type.
  • Such a projectile comprises a pyrotechnic charge which is initiated when it arrives near its objective and which causes the ejection of the submunitions from its envelope.
  • the submunitions can be of the antipersonnel or anti-tank type, when they have a diameter smaller than the internal diameter of the envelope, there is the problem of their radial setting relative to the latter.
  • the projectile must be able to withstand the mechanical stresses which are occasioned by transport, handling and above all shooting, without this resulting in deterioration of the submunitions.
  • the patent US4793260 describes an artillery cargo shell which transports anti-tank bombs. The latter are wedged relative to the envelope by means of inserts. Each insert has concave surfaces which are in contact with two adjacent bombs and it also has a convex surface which is in contact with the internal surface of the shell of the shell.
  • the shell contains several "layers" of bombs stacked axially, and each layer is wedged relative to the envelope by a set of six inserts.
  • Patent DE3732752 taken from the preamble of independent claim 1, also describes a shell transporting bombs, a shell in which the wedging of the bombettes relative to the envelope is obtained by longitudinal shims formed by two symmetrical half shims.
  • the subject of the invention is a device for wedging submunitions inside the envelope of a projectile, a device made up of bars regularly distributed angularly, each bar having a bearing surface intended to come into contact with an internal surface of the envelope and two retaining surfaces intended to come into contact with at least two adjacent submunitions, each bar being divided into at least two half-bars which are in mutual contact at at least one surface contact, device characterized in that the contact surface is inclined so as to form a guide surface which makes it possible, by relative sliding of each half-bar, to separate the two holding surfaces so as to catch up with a radial clearance when mounting submunitions in the envelope.
  • each half-bar is formed by the assembly of at least two identical elementary blocks, each elementary block comprising a bearing surface, a holding surface and a guide surface.
  • each half-bar is formed by the assembly of at least two identical elementary blocks, each elementary block comprising a bearing surface, a holding surface and a guide surface.
  • the elementary blocks constituting a half-strip are assembled by means of pins and holes carried by their end surfaces.
  • the elementary blocks may be identical on the two half-bars.
  • each block may carry a pin arranged at its guide surface.
  • This pin is intended to come into a housing carried by the guide surface of another block, the pins and housings making it possible to assemble the two half-bars, in a relative position such that the distance between the holding surfaces of the bar thus formed is minimal.
  • the bars are preferably made of plastic.
  • a cargo shell 1 transports submunitions, of the anti-tank "bomblet" type 2 arranged inside an envelope 3.
  • the envelope 3 is closed at one end by a warhead 4 and at the other end by a base 5.
  • a rocket 6, of the chronometric type, is intended to initiate a pyrotechnic charge 7 generating gas.
  • the charge 7 is separated from the bombs 2 by a piston 8.
  • the envelope 3 carries at its rear part a belt 26 which makes it possible to ensure scratching when firing inside the barrel of a weapon (not shown).
  • the gas-generating charge 7 is initiated.
  • the gases generated then exert a pressure on the piston 8, which causes the separation of the base 5 and the envelope 3, then the ejection of the bombs 2 from the envelope.
  • the shell carries nine rows of seven bombs.
  • the bombs are fitted into each other at their hollow charge coatings (not shown).
  • the wedging device according to the invention consists of five bars 9 regularly angularly distributed.
  • Each bar 9 has a bearing surface 10 intended to come into contact with an internal surface of the envelope 3.
  • the bars extend substantially over the entire height of the bomb load, that is to say from the base 5 to the piston 8.
  • a metal longitudinal key 24 completes the bars and makes it possible to drive all of the bombettes in rotation by the casing 3.
  • This key extends over substantially the entire height of the bomb load, that is to say from the base 5 to the piston 8. It has an external profile similar to that of a bar and thus comprises a bearing surface with the envelope 3 and holding surfaces in contact with adjacent bombettes.
  • the key has a tenon 25 which is housed in a groove on the casing and allows the bombs to rotate.
  • Each bar is divided into at least two half-bars 9a, 9b which have particular contact surfaces as will be described later.
  • Each half-bar is formed by the longitudinal assembly of blocks 12 which are all identical.
  • Each block 12 here has substantially the length of two bombs.
  • Figures 3a and 3b show an elementary block 12 in two orthogonal views.
  • This block has a slightly convex profile whose radius is equal to the internal radius of the envelope 3. This profile is identified at 10, the juxtaposition of the convex profiles of the different blocks constitutes the bearing surface 10 of the bar.
  • the retaining surface 11 has longitudinal grooves 13 with a triangular profile and which extend over the entire length of the block 12. These grooves are intended to deform during the setting of the bombettes, which ensures good blocking of the bombettes whatever the actual dimensions of the latter within their range of dimensional tolerances.
  • the block 12 also includes end faces 14 and 15 at which the assembly is carried out with other blocks in order to constitute a half bar.
  • the end face 15 carries a stud 16 and the end face 14 has a hole 17.
  • the stud 16 is intended to be housed in a hole 17 carried by a second block, the hole 17 is intended to receive the stud 16 of a third block.
  • the block 12 comprises two lateral faces 18 and 19, mutually parallel and substantially perpendicular to the end faces 14 and 15.
  • the block 12 finally comprises a guide surface 20 which is inclined relative to the axis of the concave surface 11. This inclined surface extends from the end surface 15 to a recess 21.
  • the inclined surface 20 carries a pin 22 and a housing 23, these two elements are intended, as will be explained later, to allow the temporary assembly of two half bars.
  • the block 12 is made of plastic, for example of the Polyamide 6 or polyamide 6-6 type (products sold under the brand "Nylon").
  • the material of the bar will favor the sliding of the blocks at their guide surfaces 20.
  • the block has a thickness of material which is substantially constant over its entire geometry and comprises spacer partitions 27 which ensure its rigidity.
  • Figures 4a and 4b show ten blocks 12 which are arranged so as to allow their assembly to constitute a complete strip.
  • the two half bars 9a and 9b will then be positioned one opposite the other, facing their respective inclined surfaces 20.
  • each half-bar is carried out by means of pins 16 and holes 17.
  • the two half-bars are assembled together using pins 22 and housings 23.
  • each block 12 serves as an abutment surface for the end surfaces 14 of the various blocks, the lateral surfaces 19 of the blocks of each half-bar are then in mutual contact.
  • the assembled bar has a relative axial offset of the half bars 9a and 9b, this offset has the length of that of the lateral surface 19.
  • the width of the bar 9 is shown in L1 it has the value twice the distance between the side surfaces 18 and 19 of each block.
  • This configuration of the bar 9 is that of its "initial state", a state in which it has a minimum width allowing it to be placed in the shell.
  • the inclination of the guide surfaces 20 causes the lateral surfaces 18 and also the retaining surfaces 11 to move apart.
  • This configuration of the bar 9 is that of its "chocking state", a state in which its width is maximum and makes it possible to make up for the radial clearance of assembly of the bombettes.
  • the width of the bar 9 is then represented in L2 and it is a few millimeters greater than the initial value L1.
  • L2 depends on the slope of the guide surface 20, it is possible to give this slope a value enabling the radial clearance of the assembly of the bombettes to be taken up.
  • the wedging device according to the invention makes it possible to considerably simplify the positioning of the bombettes inside the shell.
  • FIG. 6a represents the rear of a cargo shell inside which the bombs 2 and the various bars 9 are placed in their "initial state”.
  • the cargo shell is then placed below a compression tool which comprises a disc intended to come to exert a force on all the projecting parts of the bars 9 (on the rear faces 14 of each bar).
  • the bars therefore all adopt their "setting state" at the same time.
  • FIG. 6b represents the rear of a cargo shell inside which the bombs 2 and the various bars 9 are placed in their "stalling state".
  • an axial wedge washer for loading the shell is positioned, then the closing base.
  • a single compression operation is therefore necessary to ensure the radial wedging of the load instead of six to nine operations for wedging systems according to the state of the art.
  • the device according to the invention has been described in an application for setting bombs in an artillery cargo shell.
  • chock device for any projectile intended to transport submunitions.
  • This device may in particular be used in missiles, rocket or mortar projectile type.

Abstract

PCT No. PCT/FR94/00104 Sec. 371 Date Oct. 24, 1994 Sec. 102(e) Date Oct. 24, 1994 PCT Filed Jan. 28, 1994 PCT Pub. No. WO94/20817 PCT Pub. Date Sep. 15, 1994.A wedging device includes bars evenly distributed at an angle. Each bar has a bearing surface designed to come into contact with an internal surface of the envelope and two holding surfaces designed to come into contact with at least two adjacent sub-munitions. Each bar is divided into at least two half-bars that contact one another by at least one slanted guiding surface. By relative sliding of each half-bar, the two holding surfaces forced apart in such a way as to eliminate any radial give in the sub-munition assembly within the envelope.

Description

Le domaine de la présente invention est celui des dispositifs de calage pour des sous-munitions disposées à l'intérieur de l'enveloppe d'un projectile.The field of the present invention is that of wedging devices for submunitions placed inside the shell of a projectile.

Il est connu de concevoir des projectiles destinés à transporter des sous-munitions. Ces projectiles peuvent être du type obus d'artillerie, missile, roquette ou projectile de mortier.It is known to design projectiles intended to transport submunitions. These projectiles can be of the artillery shell, missile, rocket or mortar projectile type.

Un tel projectile comporte une charge pyrotechnique qui est initiée lorsqu'il arrive à proximité de son objectif et qui provoque l'éjection des sous-munitions hors de son enveloppe.Such a projectile comprises a pyrotechnic charge which is initiated when it arrives near its objective and which causes the ejection of the submunitions from its envelope.

Les sous-munitions peuvent être du type antipersonnel ou anti-char, lorsqu'elles ont un diamètre inférieur au diamètre interne de l'enveloppe, il se pose le problème de leur calage radial par rapport à celle-ci.The submunitions can be of the antipersonnel or anti-tank type, when they have a diameter smaller than the internal diameter of the envelope, there is the problem of their radial setting relative to the latter.

En effet le projectile doit pouvoir supporter les contraintes mécaniques qui sont occasionnées par le transport, les manipulations et surtout le tir, sans qu'il en résulte une détérioration des sous-munitions.Indeed, the projectile must be able to withstand the mechanical stresses which are occasioned by transport, handling and above all shooting, without this resulting in deterioration of the submunitions.

Le brevet US4793260 décrit un obus cargo d'artillerie qui transporte des bombelettes anti-char. Ces dernières sont calées par rapport à l'enveloppe au moyen d'inserts. Chaque insert comporte des surfaces concaves qui sont en contact avec deux bombelettes adjacentes et il comporte également une surface convexe qui est en contact avec la surface interne de l'enveloppe de l'obus.The patent US4793260 describes an artillery cargo shell which transports anti-tank bombs. The latter are wedged relative to the envelope by means of inserts. Each insert has concave surfaces which are in contact with two adjacent bombs and it also has a convex surface which is in contact with the internal surface of the shell of the shell.

Ainsi, six inserts régulièrement répartis angulairement permettent d'assurer le calage radial de sept bombelettes par rapport à l'enveloppe de l'obus.Thus, six inserts regularly distributed angularly ensure the radial setting of seven bombs with respect to the shell of the shell.

L'obus contient plusieurs "couches" de bombelettes empilées axialement, et chaque couche est calée relativement à l'enveloppe par un jeu de six inserts.The shell contains several "layers" of bombs stacked axially, and each layer is wedged relative to the envelope by a set of six inserts.

Un tel dispositif de calage présente des inconvénients.Such a wedging device has drawbacks.

En effet, afin d'assurer l'immobilisation des bombelettes, il est nécessaire de donner aux inserts des dimensions telles que le montage ne présente pas de jeu radial.Indeed, in order to ensure the immobilization of the bombs, it is necessary to give the inserts dimensions such that the assembly does not have any radial play.

Un tel montage en ajustement serré impose l'emploi d'une presse lors de la mise en place d'un groupe de sept bombelettes équipé de ses inserts à l'intérieur de l'obus.Such a tight fit assembly requires the use of a press when setting up a group of seven bombs equipped with its inserts inside the shell.

Afin de limiter les efforts de compression et les contraintes que seraient amenées à subir les bombelettes, il n'est pas possible de mettre en place toutes les "couches" de bombelettes en une seule opération.In order to limit the compressive forces and the stresses which the bombs would be subjected to, it is not possible to put all the "layers" of bombs in place in a single operation.

Il est donc nécessaire de procéder à un montage couche par couche, en ayant à chaque fois recours à la presse pour placer les inserts.It is therefore necessary to carry out an assembly layer by layer, using each time the press to place the inserts.

Une telle mise en place est longue et coûteuse. En effet, un obus cargo d'artillerie transportant des bombelettes peut comporter jusqu'à neuf couches de bombelettes ce qui imposera neuf opérations de compression successives.Such an installation is long and costly. Indeed, an artillery cargo shell transporting bombs can have up to nine layers of bombs which will require nine successive compression operations.

Le brevet DE3732752 pris à base du préambule de la revendication indépendante 1, décrit lui aussi un obus transportant des bombelettes, obus dans lequel le calage des bombelettes par rapport à l'enveloppe est obtenu par des cales longitudinales formées de deux demi cales symétriques.Patent DE3732752 taken from the preamble of independent claim 1, also describes a shell transporting bombs, a shell in which the wedging of the bombettes relative to the envelope is obtained by longitudinal shims formed by two symmetrical half shims.

Ces cales ne permettent pas non plus de rattraper le jeu radial, il est donc là encore nécessaire de procéder à un montage couche par couche des bombelettes.These shims also do not make it possible to make up for the radial play, it is therefore again necessary to carry out a layer by layer mounting of the bombettes.

C'est le but de l'invention que de proposer un dispositif de calage pour sous munitions qui permette une mise en place rapide de sous-munitions à l'intérieur d'une enveloppe tout en assurant un calage radial sans jeux des sous-munitions relativement à celle-ci.It is the object of the invention to propose a wedging device for submunitions which allows rapid installation of submunitions inside an envelope while ensuring radial wedging without play of submunitions. relative to it.

Ainsi l'invention a pour objet un dispositif de calage de sous-munitions à l'intérieur de l'enveloppe d'un projectile, dispositif constitué de barrettes régulièrement réparties angulairement, chaque barrette comportant une surface d'appui destinée à venir en contact avec une surface interne de l'enveloppe et deux surfaces de maintien destinées à venir en contact avec au moins deux sous-munitions adjacentes, chaque barrette étant divisée en au moins deux demi-barrettes qui sont en contact mutuel au niveau d'au moins une surface de contact, dispositif caractérisé en ce que la surface de contact est inclinée de façon à former une surface de guidage qui permet, par glissement relatif de chaque demi-barrette, d'écarter les deux surfaces de maintien de façon à venir rattraper un jeu radial lors du montage des sous-munitions dans l'enveloppe.Thus, the subject of the invention is a device for wedging submunitions inside the envelope of a projectile, a device made up of bars regularly distributed angularly, each bar having a bearing surface intended to come into contact with an internal surface of the envelope and two retaining surfaces intended to come into contact with at least two adjacent submunitions, each bar being divided into at least two half-bars which are in mutual contact at at least one surface contact, device characterized in that the contact surface is inclined so as to form a guide surface which makes it possible, by relative sliding of each half-bar, to separate the two holding surfaces so as to catch up with a radial clearance when mounting submunitions in the envelope.

Selon un mode particulier de réalisation de l'invention, chaque demi-barrette est constituée par l'assemblage d'au moins deux blocs élémentaires identiques, chaque bloc élémentaire comportant une surface d'appui, une surface de maintien et une surface de guidage.According to a particular embodiment of the invention, each half-bar is formed by the assembly of at least two identical elementary blocks, each elementary block comprising a bearing surface, a holding surface and a guide surface.

Selon un mode particulier de réalisation de l'invention, chaque demi-barrette est constituée par l'assemblage d'au moins deux blocs élémentaires identiques, chaque bloc élémentaire comportant une surface d'appui, une surface de maintien et une surface de guidage.According to a particular embodiment of the invention, each half-bar is formed by the assembly of at least two identical elementary blocks, each elementary block comprising a bearing surface, a holding surface and a guide surface.

Avantageusement, les blocs élémentaires constituant une demi-barrette sont assemblés au moyen de tétons et de trous portés par leurs surfaces d'extrémités.Advantageously, the elementary blocks constituting a half-strip are assembled by means of pins and holes carried by their end surfaces.

Les blocs élémentaires pourront être identiques sur les deux demi-barrettes.The elementary blocks may be identical on the two half-bars.

Afin de faciliter le montage des barrettes, chaque bloc pourra porter un pion disposé au niveau de sa surface de guidage. Ce pion est destiné à venir dans un logement porté par la surface de guidage d'un autre bloc, les pions et logements permettant d'assurer un assemblage des deux demi-barrettes, dans une position relative telle que la distance entre les surfaces de maintien de la barrette ainsi constituée soit minimale.In order to facilitate the mounting of the bars, each block may carry a pin arranged at its guide surface. This pin is intended to come into a housing carried by the guide surface of another block, the pins and housings making it possible to assemble the two half-bars, in a relative position such that the distance between the holding surfaces of the bar thus formed is minimal.

Le barrettes sont réalisées de préférence en matière plastique.The bars are preferably made of plastic.

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

  • la figure 1 représente en coupe axiale un obus cargo d'artillerie transportant des sous-munitions du type bombelettes antichar, obus équipé d'un dispositif de calage selon l'invention,
  • la figure 2 est une vue en coupe transversale de cet obus,
  • les figures 3a et 3b sont deux vues d'un des blocs élémentaires dont l'assemblage permet de constituer une barrette de calage selon l'invention, la figure 3b étant une vue de la figure 3a suivant la direction A,
  • les figures 4a et 4b montrent comment sont positionnés les différents blocs élémentaires de façon à constituer une barrette,
  • les figures 5a et 5b montrent une barrette assemblée. Elle est représentée sur la figure 5a dans son état initial, état dans lequel elle présente une largeur minimale permettant sa mise en place dans l'obus. Elle est représentée sur la figure 5b dans son état de calage, état dans lequel sa largeur est maximale et permet de rattraper les jeux de montage des sous-munitions.
  • Les figures 6a et 6b montrent l'arrière d'un obus après mise en place des bombelettes et des barrettes. Sur la figure 6a, les barrettes viennent d'être mises en place, sur la figure 6b, les barrettes rattrapent les jeux de montage.
The invention will be better understood on reading the description which follows of particular embodiments, description made with reference to the appended drawings and in which:
  • FIG. 1 shows in axial section an artillery cargo shell transporting submunitions of the anti-tank bomb type, a shell equipped with a chocking device according to the invention,
  • FIG. 2 is a cross-sectional view of this shell,
  • FIGS. 3a and 3b are two views of one of the elementary blocks, the assembly of which makes it possible to constitute a wedging bar according to the invention, FIG. 3b being a view of FIG. 3a in the direction A,
  • FIGS. 4a and 4b show how the different elementary blocks are positioned so as to constitute a bar,
  • Figures 5a and 5b show an assembled strip. It is represented in FIG. 5a in its initial state, state in which it has a minimum width allowing it to be placed in the shell. It is represented in FIG. 5b in its chocking state, a state in which its width is maximum and makes it possible to make up for the assembly clearance of the submunitions.
  • Figures 6a and 6b show the rear of a shell after placement of the bombettes and barrettes. In FIG. 6a, the bars have just been put in place, in FIG. 6b, the bars catch up on the mounting clearances.

En se reportant aux figures 1 et 2, un obus cargo 1 transporte des sous-munitions, du type "bombelettes" antichar 2 disposées à l'intérieur d'une enveloppe 3.Referring to FIGS. 1 and 2, a cargo shell 1 transports submunitions, of the anti-tank "bomblet" type 2 arranged inside an envelope 3.

L'enveloppe 3 est fermée à une extrémité par une ogive 4 et à l'autre extrémité par un culot 5. Une fusée 6, du type chronométrique, est destinée à initier une charge pyrotechnique 7 génératrice de gaz.The envelope 3 is closed at one end by a warhead 4 and at the other end by a base 5. A rocket 6, of the chronometric type, is intended to initiate a pyrotechnic charge 7 generating gas.

La charge 7 est séparée des bombelettes 2 par un piston 8.The charge 7 is separated from the bombs 2 by a piston 8.

L'enveloppe 3 porte à sa partie arrière une ceinture 26 qui permet d'assurer une prise de rayures lors du tir à l'intérieur du tube d'une arme (non représentée).The envelope 3 carries at its rear part a belt 26 which makes it possible to ensure scratching when firing inside the barrel of a weapon (not shown).

D'une façon connue, à un instant donné sur la trajectoire de l'obus, et qui est déterminé par la fusée 6 programmée avant le tir, la charge génératrice de gaz 7 est initiée.In a known manner, at a given time on the trajectory of the shell, and which is determined by the rocket 6 programmed before firing, the gas-generating charge 7 is initiated.

Les gaz engendrés exercent alors une pression sur le piston 8, qui provoque la séparation du culot 5 et de l'enveloppe 3, puis l'éjection des bombelettes 2 hors de l'enveloppe.The gases generated then exert a pressure on the piston 8, which causes the separation of the base 5 and the envelope 3, then the ejection of the bombs 2 from the envelope.

Dans l'exemple qui est représenté ici, l'obus transporte neuf rangées de sept bombelettes. D'une façon connue, les bombelettes sont emboîtées les unes dans les autres au niveau de leurs revêtements de charge creuse (non représentés).In the example shown here, the shell carries nine rows of seven bombs. In a known manner, the bombs are fitted into each other at their hollow charge coatings (not shown).

Elles sont régulièrement réparties angulairement et sont maintenues relativement à l'enveloppe 3 par un dispositif de calage.They are regularly distributed angularly and are held relative to the casing 3 by a wedging device.

Le dispositif de calage selon l'invention est constitué par cinq barrettes 9 régulièrement réparties angulairement.The wedging device according to the invention consists of five bars 9 regularly angularly distributed.

Chaque barrette 9 comporte une surface d'appui 10 destinée à venir en contact avec une surface interne de l'enveloppe 3.Each bar 9 has a bearing surface 10 intended to come into contact with an internal surface of the envelope 3.

Elle comporte également deux surfaces de maintien 11 (respectivement 11a et llb) qui sont en contact avec deux bombelettes 2 adjacentes.It also has two holding surfaces 11 (11a and 11b respectively) which are in contact with two adjacent bombs 2.

Les barrettes s'étendent sensiblement sur toute la hauteur du chargement de bombelettes, c'est à dire du culot 5 jusqu'au piston 8.The bars extend substantially over the entire height of the bomb load, that is to say from the base 5 to the piston 8.

Une clavette longitudinale métallique 24 vient compléter les barrettes et permet d'assurer l'entraînement en rotation de l'ensemble des bombelettes par l'enveloppe 3.A metal longitudinal key 24 completes the bars and makes it possible to drive all of the bombettes in rotation by the casing 3.

Cette clavette s'étend sur sensiblement toute la hauteur du chargement de bombelettes, c'est à dire du culot 5 jusqu'au piston 8. Elle a un profil externe semblable à celui d'une barrette et comporte ainsi une surface d'appui avec l'enveloppe 3 et des surfaces de maintien en contact avec des bombelettes adjacentes.This key extends over substantially the entire height of the bomb load, that is to say from the base 5 to the piston 8. It has an external profile similar to that of a bar and thus comprises a bearing surface with the envelope 3 and holding surfaces in contact with adjacent bombettes.

La clavette comporte un tenon 25 qui se loge dans une rainure aménagée sur l'enveloppe et permet l'entraînement en rotation des bombelettes.The key has a tenon 25 which is housed in a groove on the casing and allows the bombs to rotate.

Chaque barrette est divisée en au moins deux demi-barrettes 9a, 9b qui présentent des surfaces de contact particulières comme cela sera décrit par la suite.Each bar is divided into at least two half-bars 9a, 9b which have particular contact surfaces as will be described later.

Chaque demi-barrette est constituée par l'assemblage longitudinal de blocs 12 qui sont tous identiques. Chaque bloc 12 a ici sensiblement la longueur de deux bombelettes.Each half-bar is formed by the longitudinal assembly of blocks 12 which are all identical. Each block 12 here has substantially the length of two bombs.

La constitution des barrettes au moyen de blocs élémentaires permet de confectionner avec ces mêmes blocs des barrettes de différentes longueurs qui peuvent être adaptées à des projectiles transportant des quantités de bombelettes différentes.The constitution of the bars by means of elementary blocks makes it possible to make with these same blocks bars of different lengths which can be suitable for projectiles carrying different quantities of bombs.

Les figures 3a et 3b représentent un bloc élémentaire 12 suivant deux vues orthogonales.Figures 3a and 3b show an elementary block 12 in two orthogonal views.

Ce bloc comporte un profil légèrement convexe dont le rayon est égal au rayon interne de l'enveloppe 3. Ce profil est repéré en 10, la juxtaposition des profils convexes des différents blocs constitue la surface d'appui 10 de la barrette.This block has a slightly convex profile whose radius is equal to the internal radius of the envelope 3. This profile is identified at 10, the juxtaposition of the convex profiles of the different blocks constitutes the bearing surface 10 of the bar.

Il comporte également un profil concave dont le rayon est égal à celui d'une bombelette. Ce profil est repéré en 11, la juxtaposition des profils concaves des différents blocs constitue une des surfaces de maintien 11 de la barrette.It also has a concave profile whose radius is equal to that of a bomb. This profile is identified at 11, the juxtaposition of the concave profiles of the different blocks constitutes one of the holding surfaces 11 of the bar.

La surface de maintien 11 présente des rainures longitudinales 13 au profil triangulaire et qui s'étendent sur toute la longueur du bloc 12. Ces rainures sont destinées à se déformer lors du calage des bombelettes, ce qui assure un bon blocage des bombelettes quelles que soient les dimensions réelles de ces dernières à l'intérieur de leur intervalle de tolérances dimensionnelles.The retaining surface 11 has longitudinal grooves 13 with a triangular profile and which extend over the entire length of the block 12. These grooves are intended to deform during the setting of the bombettes, which ensures good blocking of the bombettes whatever the actual dimensions of the latter within their range of dimensional tolerances.

Le bloc 12 comporte également des faces d'extrémité 14 et 15 au niveau desquelles est réalisé l'assemblage avec d'autres blocs dans le but de constituer une demi barrette.The block 12 also includes end faces 14 and 15 at which the assembly is carried out with other blocks in order to constitute a half bar.

Afin de permettre cet assemblage, la face d'extrémité 15 porte un téton 16 et la face d'extrémité 14 présente un trou 17. Le téton 16 est destiné à venir se loger dans un trou 17 porté par un deuxième bloc, le trou 17 est destiné à recevoir le téton 16 d'un troisième bloc.To allow this assembly, the end face 15 carries a stud 16 and the end face 14 has a hole 17. The stud 16 is intended to be housed in a hole 17 carried by a second block, the hole 17 is intended to receive the stud 16 of a third block.

Le bloc 12 comporte deux faces latérales 18 et 19, parallèles entre elles et sensiblement perpendiculaires aux faces d'extrémité 14 et 15.The block 12 comprises two lateral faces 18 and 19, mutually parallel and substantially perpendicular to the end faces 14 and 15.

Le bloc 12 comporte enfin une surface de guidage 20 qui est inclinée par rapport à l'axe de la surface concave 11. Cette surface inclinée s'étend de la surface d'extrémité 15 jusqu'à un décrochement 21.The block 12 finally comprises a guide surface 20 which is inclined relative to the axis of the concave surface 11. This inclined surface extends from the end surface 15 to a recess 21.

La surface inclinée 20 porte un pion 22 et un logement 23, ces deux éléments sont destinés, comme cela sera précisé par la suite, à permettre l'assemblage temporaire de deux demi barrettes.The inclined surface 20 carries a pin 22 and a housing 23, these two elements are intended, as will be explained later, to allow the temporary assembly of two half bars.

Le bloc 12 est réalisé en matière plastique, par exemple du type Polyamide 6 ou polyamide 6-6 (produits commercialisés sous la marque "Nylon"). Le matériau de la barrette favorisera le glissement des blocs au niveau de leurs surfaces de guidage 20.The block 12 is made of plastic, for example of the Polyamide 6 or polyamide 6-6 type (products sold under the brand "Nylon"). The material of the bar will favor the sliding of the blocks at their guide surfaces 20.

Toutes les formes sont obtenues lors de l'injection de cette matière en particulier le téton 16, le pion 22, le trou 17 et le logement 23.All the shapes are obtained during the injection of this material, in particular the stud 16, the pin 22, the hole 17 and the housing 23.

Afin de faciliter les opérations d'injection tout en assurant une bonne tenue mécanique, le bloc présente une épaisseur de matière sensiblement constante sur toute sa géométrie et comporte des cloisons entretoises 27 qui assurent sa rigidité.In order to facilitate the injection operations while ensuring good mechanical strength, the block has a thickness of material which is substantially constant over its entire geometry and comprises spacer partitions 27 which ensure its rigidity.

Les figures 4a et 4b montrent dix blocs 12 qui sont disposés de façon à permettre leur assemblage pour constituer une barrette complète.Figures 4a and 4b show ten blocks 12 which are arranged so as to allow their assembly to constitute a complete strip.

Cinq blocs 12 seront assemblés au niveau de leurs surfaces d'extrémité 14 et 15 de façon à constituer une demi barrette 9a, cinq autres blocs seront assemblés de la même manière de façon à constituer une demi barrette 9b.Five blocks 12 will be assembled at their end surfaces 14 and 15 so as to constitute a half strip 9a, five other blocks will be assembled in the same way so as to constitute a half strip 9b.

Les deux demi barrettes 9a et 9b seront alors positionnées l'une en face de l'autre en mettant en regard leurs surfaces inclinées respectives 20.The two half bars 9a and 9b will then be positioned one opposite the other, facing their respective inclined surfaces 20.

L'assemblage de chaque demi barrette est effectué au moyen des tétons 16 et des trous 17.The assembly of each half-bar is carried out by means of pins 16 and holes 17.

L'assemblage des deux demi barrettes entre elles est réalisé au moyen des pions 22 et des logements 23.The two half-bars are assembled together using pins 22 and housings 23.

Les décrochements 21 de chaque bloc 12 servent de surface de butée aux surfaces d'extrémité 14 des différents blocs, les surfaces latérales 19 des blocs de chaque demi barrette se trouvent alors en contact mutuel.The recesses 21 of each block 12 serve as an abutment surface for the end surfaces 14 of the various blocks, the lateral surfaces 19 of the blocks of each half-bar are then in mutual contact.

La barrette 9 ainsi obtenue est représentée à la figure 5a.The bar 9 thus obtained is shown in Figure 5a.

Du fait de la géométrie des blocs 12, la barrette assemblée présente un décalage axial relatif des demi barrettes 9a et 9b, ce décalage a pour longueur celle de la surface latérale 19.Due to the geometry of the blocks 12, the assembled bar has a relative axial offset of the half bars 9a and 9b, this offset has the length of that of the lateral surface 19.

La largeur de la barrette 9 est représentée en L1 elle a pour valeur le double de la distance séparant les surfaces latérales 18 et 19 de chaque bloc.The width of the bar 9 is shown in L1 it has the value twice the distance between the side surfaces 18 and 19 of each block.

Cette configuration de la barrette 9 est celle dite de son "état initial", état dans lequel elle présente une largeur minimale permettant sa mise en place dans l'obus.This configuration of the bar 9 is that of its "initial state", a state in which it has a minimum width allowing it to be placed in the shell.

Lorsqu'on exerce un effort axial sur les extrémités 14 de la barrette 9, on provoque le cisaillement des pions 22 puis le glissement axial relatif des deux demi-barrettes.When an axial force is exerted on the ends 14 of the bar 9, the pins 22 are sheared and then the relative axial sliding of the two half-bars.

L'inclinaison des surfaces de guidage 20 entraîne l'écartement des surfaces latérales 18 et également des surfaces de maintien 11.The inclination of the guide surfaces 20 causes the lateral surfaces 18 and also the retaining surfaces 11 to move apart.

Lorsqu'on fait glisser ainsi les deux demi barrettes l'une par rapport à l'autre jusqu'à faire disparaître le décalage relatif entre les deux demi barrettes, on obtient la configuration de la barrette 9 représentée à la figure 5b.When the two half bars are thus dragged relative to each other until the relative offset between the two half bars disappears, the configuration of the bar 9 shown in FIG. 5b is obtained.

Cette configuration de la barrette 9 est celle dite de son "état de calage", état dans lequel sa largeur est maximale et permet de rattraper les jeux radiaux de montage des bombelettes.This configuration of the bar 9 is that of its "chocking state", a state in which its width is maximum and makes it possible to make up for the radial clearance of assembly of the bombettes.

La largeur de la barrette 9 est alors représentée en L2 et elle est supérieure de quelques millimètres à la valeur initiale L1. La valeur de L2 dépend de la pente de la surface de guidage 20, il est possible de donner à cette pente une valeur permettant le rattrapage des jeux radiaux de montage des bombelettes.The width of the bar 9 is then represented in L2 and it is a few millimeters greater than the initial value L1. The value of L2 depends on the slope of the guide surface 20, it is possible to give this slope a value enabling the radial clearance of the assembly of the bombettes to be taken up.

Le dispositif de calage selon l'invention permet de simplifier considérablement la mise en place des bombelettes à l'intérieur de l'obus.The wedging device according to the invention makes it possible to considerably simplify the positioning of the bombettes inside the shell.

Il devient possible de mettre en place en une seule opération toutes les bombelettes et leurs barrettes de calage (dans leur "état initial").It becomes possible to put in place in a single operation all the bombs and their wedging bars (in their "initial state").

Il est possible également de disposer les barrettes de calage après mise en place des bombelettes. En effet la largeur réduite des barrettes permet de les glisser sans difficultés entre les bombelettes. La rigidité de l'assemblage des différents blocs constituant une barrette facilite également la mise en place de ces dernières.It is also possible to arrange the wedging bars after fitting the bombs. Indeed the reduced width of the bars allows them to slide without difficulty between the bombs. The rigidity of the assembly of the different blocks constituting a bar also facilitates the installation of the latter.

La figure 6a représente l'arrière d'un obus cargo à l'intérieur duquel sont placées les bombelettes 2 et les différentes barrettes 9 dans leur "état initial".FIG. 6a represents the rear of a cargo shell inside which the bombs 2 and the various bars 9 are placed in their "initial state".

L'obus cargo est alors placé en dessous d'un outillage de compression qui comporte un disque destiné à venir exercer un effort sur toutes les parties saillantes des barrettes 9 (sur les faces arrières 14 de chaque barrette).The cargo shell is then placed below a compression tool which comprises a disc intended to come to exert a force on all the projecting parts of the bars 9 (on the rear faces 14 of each bar).

Les barrettes adoptent donc toutes en même temps leur "état de calage".The bars therefore all adopt their "setting state" at the same time.

La figure 6b représente l'arrière d'un obus cargo à l'intérieur duquel sont placées les bombelettes 2 et les différentes barrettes 9 dans leur "état de calage".FIG. 6b represents the rear of a cargo shell inside which the bombs 2 and the various bars 9 are placed in their "stalling state".

On positionne ensuite une rondelle de calage axial du chargement de l'obus puis le culot de fermeture.Next, an axial wedge washer for loading the shell is positioned, then the closing base.

Une seule opération de compression est donc nécessaire pour assurer le calage radial du chargement au lieu de six à neuf opérations pour les systèmes de calage selon l'état de la technique.A single compression operation is therefore necessary to ensure the radial wedging of the load instead of six to nine operations for wedging systems according to the state of the art.

A titre de variante il est possible d'envisager des barrettes constituée de deux demi barrettes, chaque demi barrette étant monobloc au lieu d'être constituée d'un assemblage de blocs élémentaires 12.As a variant, it is possible to envisage bars made up of two half bars, each half bar being in one piece instead of being made up of an assembly of elementary blocks 12.

Le dispositif selon l'invention a été décrit dans une application au calage de bombelettes dans un obus cargo d'artillerie.The device according to the invention has been described in an application for setting bombs in an artillery cargo shell.

Il est possible d'utiliser le dispositif de calage selon l'invention pour tout projectile destiné à transporter des sous-munitions. On pourra en particulier utiliser ce dispositif dans des projectiles du type missile, roquette ou projectile de mortier.It is possible to use the chock device according to the invention for any projectile intended to transport submunitions. This device may in particular be used in missiles, rocket or mortar projectile type.

Claims (6)

  1. A shimming device for sub-munitions (2) inside the casing (3) of a projectile (1) which is formed of bars (9) evenly spaced angularly, each bar incorporating a bearing surface (10) intended to come into contact with an inner surface of the casing (3) and two holding surfaces (11a, llb) intended to come into contact with at least two adjacent sub-munitions (2), each bar being divided into at least two half-bars (9a, 9b) which are in mutual contact at at least one contact surface (20), a device characterized in that the contact surface (20) is inclined so as to form a guiding surface which, by relative sliding of each half-bar, enables the two holding surfaces (11a, llb) to be spread out thereby taking up the radial play when the sub-munitions (2) are installed in the casing (3).
  2. A device according to Claim 1, characterized in that each half-bar is formed by assembling at least two identical block elements (12), each block element incorporating a bearing surface (10), a holding surface (11) and a guiding surface (20).
  3. A device according to Claim 2, characterized in that the block elements (12) forming the half-bars are assembled using plugs (16) and holes (17) carried on their end surfaces (15, 14).
  4. A device according to one of Claims 2 or 3, characterized in that the block elements (12) are identical on the two half-bars.
  5. A device according to Claim 4, characterized in that each block (12) carries a pin (22) arranged on its guiding surface (20), this pin being intended to go into a housing (23) carried by the guiding surface of another block, the pins and housings allowing the two half-bars (9a, 9b) to be assembled in a relative position such that there is a minimal distance between the holding surfaces (lla, 11b) of the bar (9) thus formed.
  6. A device according to one of Claims 1 to 5, characterized in that the bars (9) are made of a plastic material.
EP94905749A 1993-03-08 1994-01-28 Submunition locating device Expired - Lifetime EP0643821B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9302614 1993-03-08
FR9302614A FR2702557B1 (en) 1993-03-08 1993-03-08 Timing device for submunition.
PCT/FR1994/000104 WO1994020817A1 (en) 1993-03-08 1994-01-28 Submunition locating device

Publications (2)

Publication Number Publication Date
EP0643821A1 EP0643821A1 (en) 1995-03-22
EP0643821B1 true EP0643821B1 (en) 1997-12-29

Family

ID=9444720

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Application Number Title Priority Date Filing Date
EP94905749A Expired - Lifetime EP0643821B1 (en) 1993-03-08 1994-01-28 Submunition locating device

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US (1) US5473988A (en)
EP (1) EP0643821B1 (en)
AT (1) ATE161625T1 (en)
DE (1) DE69407521T2 (en)
ES (1) ES2112519T3 (en)
FI (1) FI945258A0 (en)
FR (1) FR2702557B1 (en)
IL (1) IL108793A (en)
NO (1) NO303090B1 (en)
WO (1) WO1994020817A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429292C2 (en) * 1994-08-18 1998-04-09 Rheinmetall Ind Ag Swirl-stabilized carrier floor
US6874425B1 (en) 2001-05-18 2005-04-05 Day & Zimmermann, Inc. Projectile carrying sub-munitions
US6640723B2 (en) * 2002-03-25 2003-11-04 The United States Of America As Represented By The Secretary Of The Navy Mission responsive ordnance
IL172589A (en) * 2005-12-14 2010-11-30 Israel Military Ind Method of converting a cluster bomb into a unitary bomb
RU2645045C1 (en) * 2016-12-21 2018-02-15 Акционерное общество "Научно-производственное объединение "СПЛАВ" Case of cluster warhead of rocket missile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809583A (en) * 1952-12-04 1957-10-15 Roman L Ortynsky Cluster bomb
US3611931A (en) * 1969-05-05 1971-10-12 Murell J Bessey Sequential burst air drop cluster
DE3139473C2 (en) * 1981-10-03 1984-03-01 Diehl GmbH & Co, 8500 Nürnberg Device for combining cylindrical dropping ammunition in bundles
IT1167034B (en) * 1983-11-30 1987-05-06 Simmel Spa MUTUAL REMOVAL DEVICE FOR SUBMUNITIONS OF A NON-ROTATING SUBMUNITION BULLET
DE3629668C1 (en) * 1986-08-30 1988-03-10 Rheinmetall Gmbh Swirl stabilized bomblet bullet
DE3732744A1 (en) * 1987-09-29 1989-04-06 Rheinmetall Gmbh Cluster munition (submunition carrier projectile) having submunitions
DE3732752A1 (en) * 1987-09-29 1989-04-06 Rheinmetall Gmbh Cluster munition (submunition carrier projectile) with submunitions
DE3925390A1 (en) * 1989-08-01 1991-02-14 Rheinmetall Gmbh Carrier missile for small bombs - has segmented disc with recesses for fuses and forming distance piece

Also Published As

Publication number Publication date
FR2702557A1 (en) 1994-09-16
FR2702557B1 (en) 1995-04-28
FI945258A (en) 1994-11-08
DE69407521D1 (en) 1998-02-05
DE69407521T2 (en) 1998-06-25
NO944235D0 (en) 1994-11-07
IL108793A (en) 1998-02-08
US5473988A (en) 1995-12-12
WO1994020817A1 (en) 1994-09-15
NO944235L (en) 1994-11-07
EP0643821A1 (en) 1995-03-22
FI945258A0 (en) 1994-11-08
NO303090B1 (en) 1998-05-25
ATE161625T1 (en) 1998-01-15
ES2112519T3 (en) 1998-04-01

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