EP0379402A1 - Pneumatic unlocking device for ammunition deployed from a carrying projectile - Google Patents

Pneumatic unlocking device for ammunition deployed from a carrying projectile Download PDF

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Publication number
EP0379402A1
EP0379402A1 EP90400088A EP90400088A EP0379402A1 EP 0379402 A1 EP0379402 A1 EP 0379402A1 EP 90400088 A EP90400088 A EP 90400088A EP 90400088 A EP90400088 A EP 90400088A EP 0379402 A1 EP0379402 A1 EP 0379402A1
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EP
European Patent Office
Prior art keywords
unlocking
submunition
unlocking device
rod
retaining flange
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.)
Withdrawn
Application number
EP90400088A
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German (de)
French (fr)
Inventor
Jean-François Denis
Alain Lepicard
Henri Ropars
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomson Brandt Armements SA
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Thomson Brandt Armements SA
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Filing date
Publication date
Application filed by Thomson Brandt Armements SA filed Critical Thomson Brandt Armements SA
Publication of EP0379402A1 publication Critical patent/EP0379402A1/en
Withdrawn legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36Projectiles, 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
    • F42B12/56Projectiles, 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
    • F42B12/58Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/60Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected radially

Definitions

  • the present invention relates to a device for unlocking a system for attaching submunitions on board in a vector, that is to say any flying vehicle (rockets, missiles, stand off missiles, etc.).
  • a device for unlocking a system for attaching submunitions on board in a vector that is to say any flying vehicle (rockets, missiles, stand off missiles, etc.).
  • the ejection of each of the submunitions fixed on the body of the vector is carried out simultaneously on command thanks to the unlocking of the fixing system.
  • a holding system composed on the one hand of a fixing system comprising a movable holding clamp tightening the submunition by the intermediate of the supports and on the other hand of a locking system holding the movable retaining flange against the support of the submunition before ejection.
  • the object of the invention is to remedy the aforementioned drawbacks in the two unlocking systems by using a pneumatic unlocking system using the gases of a generator of a submunition ejection system.
  • the subject of the present invention is a device for unlocking a fixing system composed of a movable retaining clamp clamping a submunition, against supports produced on the submunition, by means of a locking system. and now submunitions embedded in a vector, this fixing system being triggered before or simultaneously with the implementation of an ejection system, device characterized in that it comprises a pneumatic system and means for sending a part of the gases from a gas generator of the ejection system on the pneumatic system controlling the unlocking of the fixing system.
  • FIG. 1 represents a cross section of a body of a vector transporting submunitions and equipped with a mechanical unlocking device of a system for fixing submunitions.
  • the body 1 comprising for example three compartments 3, is equipped, for example, in each of these compartments 3, means 5 ensuring the maintenance of the sensitive submunition 2 to the body 1; these means are mechanical systems; these mechanical systems allow at least one support 7 of the submunition 2 to serve as blocking for this submunition 2.
  • Each submunition is equipped, for example, with four supports 7, two of which are shown in FIG. 1. These supports are, in our embodiment, positioned on the outside of the submunition but internal supports could be fitted inside the submunition.
  • the means 5 comprise a fixed part 8 connected to the wing 4 of the body 1 and a movable retaining flange 9 around an axis 15, fixed on the fixed part 8 and connected to a mechanical locking system consisting of a rod 6.
  • a screw 10 provided, for example, with a crown 11 performs a pinching force on the external supports 7. This operation is established at the four locations where the means 5 are housed and makes it possible to maintain the submunition 2 on the body 1.
  • this ejection system is identical in all the compartments 3 containing a sub-munition and comprises, for example, a bag 12 connected by a conduit 13 to a section 14 in relation to a gas generator not shown in this figure.
  • the gas generator When the gas generator is triggered, the gases which emanate therefrom come through the different openings inside the bag 12 which inflates and exerts a pushing force on the submunition 2 which acts on the means 5 pinching after unlocking the mechanical locking system.
  • FIG. 2 represents a cross section of a pneumatic unlocking device of a system for fixing submunitions according to the invention in the locked position.
  • the movable retaining flange 9 around the axis 15 performs a gripping force, for example, on the external supports 7 of the submunition 2.
  • This force is due to the fact that, at the end 16 of the retaining flange 9, a roller 17 is pressed against a stepped part 18 of a rod 20; this stepped part 18 is slightly engaged in a cavity 19 made at the upper end 30 of the wing 4 and allows the rod 20 to be guided during a movement of the latter.
  • the cavity 19 is limited to one of these ends, for example, by a closure plug 21 so as to allow sufficient movement of the stepped part 18 inside the cavity 19 to release the movable retaining flange 9 thanks to the reduction in the structure of the rod 20
  • this rod 20 is, for example, made up of three parts: a stepped part 18, a central part 22 and a flat part 23 at its lower end 24. dimension and size of this rod 20 have been determined so that, in the locked position, the diameter and the width of the stepped part 18 prevent any movement of the movable retaining flange 9 and, in the unlocked position, the diameter and the width of the central part 22 release this flange 9.
  • the flat part 23 has for example a width allowing its insertion inside a first conduit 25 as well as its abutment against the end of this conduit 25.
  • the rod 20 mistletoe given in its displacement by the cavity 19 receiving the end of the stepped part 18 of the rod 20 has its flat part 23 placed, for example, inside the first conduit 25, on a piston 26 held in a position locked by through, for example, a shear pin 27; this first conduit 25 is in direct connection with a second conduit 28 for the arrival of gases from a generator of the ejection system not shown in this figure 2.
  • This pneumatic unlocking device ensures both the simultaneous ejection of the sub -munitions on board the body 1 of the vector.
  • each movable retaining flange 9 was locked by a mechanical system which favored a simultaneous release of the different submunitions due to the different reaction times of the commands coming from the mechanical systems.
  • each pneumatic unlocking device releases two fixing systems, that is to say two movable holding flanges 9 under the effect of a rod 20 which can translate thanks to the gases of a generator of the system ejection actuating a piston 26 and passing from a locked position to an unlocked position.
  • This system makes it possible to reduce the number of unlocking devices since, in the same embodiment, with the same number of supports fixed on each munition, only six devices are used instead of twelve for a mechanical device.
  • Figure 3 shows a cross section of a pneumatic unlocking device of a fastening system according to the invention in the unlocked position.
  • the implementation of the ejection system causes the simultaneous unlocking of the fastening systems maintaining the submunitions on the body of the vector.
  • the gases are sent to the piston 26 which, under the pressure P1, shears the shear pin 27 causing thus the rod 20 in a translational movement (the displacement is represented by the arrows 29).
  • This rod 20 engages in the cavity 19 provided for this purpose up to the closure plug 21 of this cavity 19.
  • This roller 17 is, for example, steel.
  • the retaining flange 9 then releases the external support 7 from the submunition and this on either side of the end upper 30 of the body 1 of the vector, thus letting the submunitions on board escape the body 1 of the vector.
  • a shock absorber system serving as a decoupling system can be implemented in the embodiment. Indeed, it suffices to replace the fixed part 8, for example, of steel, linked to the wing 4 of the structure of the vector, by a damper absorbing the various vibrations capable of being transmitted and thus avoiding possible deterioration of the submunition.
  • This pneumatic unlocking device for submunitions applies more particularly to sensitive submunitions, that is to say all kinds of projectiles used in a harsh environment where important precautions must be taken to avoid a transfer of vibrations causing deterioration or activation of fragile parts of the submunition.
  • This device according to the invention can be applied to any kind of system using a fixing device having the properties of the device according to the invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Lock And Its Accessories (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

The present invention relates to a device for unlocking a system for fastening submunitions embarked in a carrier, that is to say any flying craft (rockets, missiles, stand-off missiles, etc). <??>Each submunition (2) is held on the body (1) of the carrier by means of a movable retaining flange (9) resting on stays (7) fastened to the submunition (2) locked by means of a rod (20), against which rests a roller (17) fastened to the end of the movable retaining flange (9). A pneumatic system consisting of a piston (26) activates the rod (20) comprising different parts of different widths and diameters, so that its stepped part (18), on which the roller (17) rests, is shifted and replaced by its central part (22), in such a way that the movable retaining flange (9) can pivot about the axis (15), thereby releasing the submunition. <??>This device is used on any sensitive submunition embarked in a carrier. <IMAGE>

Description

La présente invention concerne un dispositif de déverrouillage d'un système de fixation de sous-munitions embarquées dans un vecteur c'est-à-dire tout engin volant (roquettes, missiles, missiles stand off ...). L'éjection de chacune des sous-munitions fixées sur le corps du vecteur s'effectue simultanément sur commande grâce au déverrouillage du système de fixation.The present invention relates to a device for unlocking a system for attaching submunitions on board in a vector, that is to say any flying vehicle (rockets, missiles, stand off missiles, etc.). The ejection of each of the submunitions fixed on the body of the vector is carried out simultaneously on command thanks to the unlocking of the fixing system.

La fonction de ces vecteurs consiste à transporter jusqu'à proximité du ou des objectifs, des sous-munitions sensibles c'est-a-dire comportant des éléments susceptibles d'être endommagés par des contraintes, par exemple, mécaniques et de les larguer en les éjectant simultanément pour augmenter la probabilité de destruction du ou des objectifs.The function of these vectors consists in transporting, close to the objective or objectives, sensitive submunitions, that is to say comprising elements liable to be damaged by stresses, for example mechanical, and to drop them in ejecting them simultaneously to increase the probability of destruction of the objective (s).

La fixation des sous-munitions sensibles munies d'appuis externes ou internes, sur le vecteur est assurée par un système de maintien composé d'une part d'un système de fixation comprenant une bride de maintien mobile serrant la sous -munition par l'intermédiaire des appuis et d'autre part d'un système de verrouillage maintenant la bride de maintien mobile contre l'appui de la sous-munition avant éjection.The fixing of sensitive submunitions provided with external or internal supports, on the vector is ensured by a holding system composed on the one hand of a fixing system comprising a movable holding clamp tightening the submunition by the intermediate of the supports and on the other hand of a locking system holding the movable retaining flange against the support of the submunition before ejection.

Pour commander le déverrouillage du système de verrouillage de la bride contre l'appui de la sous-munition, plusieurs solutions sont utilisées : soit un système mécanique par tringles, soit un système pyrotechnique placé au niveau de chaque point de maintien. l'utilisation de ces systèmes révèle plusieurs inconvénients :
. des problèmes d'encombrement et de poids ;
. la diminution de la fiabilité d'un tel système dû à un événement pyrotechnique ;
. l'évolution des temps de réaction ;
. la complexité d'un réseau électrique à mettre en place.
To control the unlocking of the clamp locking system against the support of the submunition, several solutions are used: either a mechanical system by rods, or a pyrotechnic system placed at each holding point. the use of these systems reveals several disadvantages:
. space and weight issues;
. the decrease in the reliability of such a system due to a pyrotechnic event;
. changes in reaction times;
. the complexity of an electrical network to set up.

Le but de l'invention est de remédier aux inconvénients précités dans les deux systèmes de déverrouillage en utilisant un système de déverrouiliage pneumatique utilisant les gaz d'un générateur d'un système d'éjection de la sous-munition.The object of the invention is to remedy the aforementioned drawbacks in the two unlocking systems by using a pneumatic unlocking system using the gases of a generator of a submunition ejection system.

La présente invention a pour objet un dispositif de déverrouillage d'un système de fixation composé d'une bride de maintien mobile serrant une sous-munition, contre des appuis réalisés sur la sous -munition, par l'intermédiaire d'un système de verrouillage et maintenant des sous-munitions embarquées dans un vecteur, ce système de fixation étant déclenché préalablement ou simultanément avec la mise en oeuvre d'un système d'éjection, dispositif caractérisé en ce qu'il comporte un système pneumatique et des moyens pour envoyer une partie des gaz d'un générateur de gaz du système d'éjection sur le système pneumatique commandant le déverrouillage du système de fixation.The subject of the present invention is a device for unlocking a fixing system composed of a movable retaining clamp clamping a submunition, against supports produced on the submunition, by means of a locking system. and now submunitions embedded in a vector, this fixing system being triggered before or simultaneously with the implementation of an ejection system, device characterized in that it comprises a pneumatic system and means for sending a part of the gases from a gas generator of the ejection system on the pneumatic system controlling the unlocking of the fixing system.

D'autres caractéristiques et avantages que procure l'invention apparaîtront, a titre d'exemple, dans un mode de réalisation dans la description détaillée qui suit et qui est illustrée par les figures suivantes :

  • - la figure 1 représente une coupe transversale d'un corps d'un vecteur transportant des sous-munitions et équipé d'un dispositif de déverrouillage mécanique du système de fixation des sous-munitions ;
  • - la figure 2 représente une coupe transversale d'un dispositif de déverrouiliage pneumatique d'un système de fixation de sous-munitions selon l'invention en position verrouillée ;
  • - la figure 3 représente une coupe transversale d'un dispositif de déverrouiliage pneumatique d'un système de fixation de sous-munitions selon l'invention en position déverrouillée.
Other characteristics and advantages which the invention provides will appear, by way of example, in an embodiment in the detailed description which follows and which is illustrated by the following figures:
  • - Figure 1 shows a cross section of a body of a vector carrying submunitions and equipped with a mechanical unlocking device of the submunitions fixing system;
  • - Figure 2 shows a cross section of a pneumatic unlocking device of a submunitions fixing system according to the invention in the locked position;
  • - Figure 3 shows a cross section of a pneumatic unlocking device of a system for fixing submunitions according to the invention in the unlocked position.

La figure 1 représente une coupe transversale d'un corps d'un vecteur transportant des sous-munitions et équipé d'un dispositif de déverrouillage mécanique d'un système de fixation de sous-munitions. Le corps 1 comportant par exemple trois compartiments 3, est équipé, par exemple, dans chacun de ces compartiments 3, de moyens 5 assurant le maintien de la sous-munition sensible 2 au corps 1 ; ces moyens sont des systèmes mécaniques ; ces systèmes mécaniques permettent au moins a un appui 7 de la sous-munition 2 de servir de blocage à cette sous-munition 2. Chaque sous-munition est équipée, par exemple, de quatre appuis 7 dont deux sont représentés sur la figure 1. Ces appuis sont, dans notre réalisation, positionnés sur l'extérieur de la sous-munition mais des appuis internes pourraient être aménagés a l'intérieur de la sous-munition.FIG. 1 represents a cross section of a body of a vector transporting submunitions and equipped with a mechanical unlocking device of a system for fixing submunitions. The body 1 comprising for example three compartments 3, is equipped, for example, in each of these compartments 3, means 5 ensuring the maintenance of the sensitive submunition 2 to the body 1; these means are mechanical systems; these mechanical systems allow at least one support 7 of the submunition 2 to serve as blocking for this submunition 2. Each submunition is equipped, for example, with four supports 7, two of which are shown in FIG. 1. These supports are, in our embodiment, positioned on the outside of the submunition but internal supports could be fitted inside the submunition.

Les moyens 5 comprennent une partie fixe 8 reliée a l'aile 4 du corps 1 et une bride de maintien mobile 9 autour d'un axe 15, fixée sur la partie fixe 8 et reliée à un système de verrouiliage mécanique constitué d'une tringle 6. Une vis 10 munie, par exemple, d'une couronne 11 effectue un effort de pincement sur les appuis extérieurs 7. Cette opération est établie aux quatre emplacements où logent les moyens 5 et permet de maintenir la sous-munition 2 sur le corps 1. Le déverrouillage du système de verrouillage est réalisé préalablement ou simultanément avec la mise en oeuvre d'un système d'éjection que l'on a représenté également sur cette même figure, ce système d'éjection est identique dans tous les compartiments 3 contenant une sous -munition et comporte, par exemple, un sac 12 relié par un conduit 13 a une section 14 en relation avec un générateur de gaz non représenté sur cette figure. Lorsque le générateur de gaz est déclenché, les gaz, qui en sont issus, proviennent par les différentes ouvertures à l'intérieur du sac 12 qui se gonfle et exerce une force de poussée sur la sous-munition 2 qui agit sur les moyens 5 de pincement après déverrouillage du système de verrouillage mécanique.The means 5 comprise a fixed part 8 connected to the wing 4 of the body 1 and a movable retaining flange 9 around an axis 15, fixed on the fixed part 8 and connected to a mechanical locking system consisting of a rod 6. A screw 10 provided, for example, with a crown 11 performs a pinching force on the external supports 7. This operation is established at the four locations where the means 5 are housed and makes it possible to maintain the submunition 2 on the body 1. The unlocking of the locking system is carried out before or simultaneously with the use of an ejection system which is also shown in this same figure, this ejection system is identical in all the compartments 3 containing a sub-munition and comprises, for example, a bag 12 connected by a conduit 13 to a section 14 in relation to a gas generator not shown in this figure. When the gas generator is triggered, the gases which emanate therefrom come through the different openings inside the bag 12 which inflates and exerts a pushing force on the submunition 2 which acts on the means 5 pinching after unlocking the mechanical locking system.

La figure 2 représente une coupe transversale d'un dispositif de déverrouillage pneumatique d'un système de fixation de sous-munitions selon l'invention en position verrouillée. Sur cette figure 2, seule l'extrémité du corps 1 du vecteur où est fixé le dispositif de déverrouillage pneumatique est représenté. En position verrouiliée, la bride de maintien mobile 9 autour de l'axe 15 effectue un effort de pincement, par exemple, sur les appuis externes 7 de la sous-munition 2. Cet effort est dû au fait que, a l'extrémité 16 de la bride de maintien 9, un galet 17 est mis en appui contre une partie étagée 18 d'une tige 20 ; cette partie étagée 18 est légèrement engagée dans une cavité 19 réalisée à l'extrémité supérieure 30 de l'aile 4 et permet le guidage de la tige 20 lors d'un mouvement de celle-ci. La cavité 19 est limitée à l'une de ces extrémités, par exemple, par un bouchon de fermeture 21 de manière à permettre un déplacement suffisant de la partie étagée 18 à l'intérieur de la cavité 19 pour libérer la bride de maintien mobile 9 grâce à la diminution de la structure de la tige 20 cette tige 20 est, par exemple, constituée de trois parties : une partie étagée 18, une partie centrale 22 et une partie plate 23 à son extrémité inférieure 24. dimension et la taille de cette tige 20 ont été déterminées de manière à ce que, en position verrouillée le diamètre et la largeur de la partie étagée 18 empêchent tout mouvement de la bride de maintien mobile 9 et, en position déverrouillée, le diamètre et la largeur de la partie centrale 22 libèrent cette bride 9. La partie plate 23 a par exemple une largeur permettant son insertion à l'intérieur d'un premier conduit 25 ainsi que sa mise en butée contre l'extrémité de ce conduit 25. La tige 20 guidée dans son déplacement par la cavité 19 recevant l'extrémité de la partie étagée 18 de la tige 20 a sa partie plate 23 placée, par exemple, à l'intérieur du premier conduit 25, sur un piston 26 maintenu dans une position verrouillée par l'intermédiaire, par exemple, d'une goupille de cisaillement 27 ; ce premier conduit 25 est en liaison directe avec un deuxième conduit 28 d'arrivée des gaz provenant d'un générateur du système d'éjection non représenté sur cette figure 2. Ce dispositif de déverrouillage pneumatique assure à la fois l'éjection simultanée des sous-munitions embarquées sur le corps 1 du vecteur. En effet, dans les systèmes de déverrouillage mécanique par tringles, chaque bride de maintien mobile 9 était verrouillée par un système mécanique ce qui défavorisait un largage simultané des différentes sous-munitions dû aux différents temps de réaction des commandes provenant aux systèmes mécaniques. Dans le cadre de notre invention, chaque dispositif de déverrouillage pneumatique libère deux systèmes de fixation c'est-à-dire deux brides de maintien mobile 9 sous l'effet d'une tige 20 pouvant translaté grâce aux gaz d'un générateur du système d'éjection actionnant un piston 26 et passant d'une position verrouillée à une position déverrouiilée. Ce système permet de réduire le nombre de dispositif de déverrouillage puisque, dans une même réalisation, avec le même nombre d'appuis fixés sur chaque munition, il n'est utilisé que six dispositifs au lieu de douze pour un dispositif mécanique.FIG. 2 represents a cross section of a pneumatic unlocking device of a system for fixing submunitions according to the invention in the locked position. In this figure 2, only the end of the body 1 of the vector where the pneumatic unlocking device is fixed is represented. In the locked position, the movable retaining flange 9 around the axis 15 performs a gripping force, for example, on the external supports 7 of the submunition 2. This force is due to the fact that, at the end 16 of the retaining flange 9, a roller 17 is pressed against a stepped part 18 of a rod 20; this stepped part 18 is slightly engaged in a cavity 19 made at the upper end 30 of the wing 4 and allows the rod 20 to be guided during a movement of the latter. The cavity 19 is limited to one of these ends, for example, by a closure plug 21 so as to allow sufficient movement of the stepped part 18 inside the cavity 19 to release the movable retaining flange 9 thanks to the reduction in the structure of the rod 20 this rod 20 is, for example, made up of three parts: a stepped part 18, a central part 22 and a flat part 23 at its lower end 24. dimension and size of this rod 20 have been determined so that, in the locked position, the diameter and the width of the stepped part 18 prevent any movement of the movable retaining flange 9 and, in the unlocked position, the diameter and the width of the central part 22 release this flange 9. The flat part 23 has for example a width allowing its insertion inside a first conduit 25 as well as its abutment against the end of this conduit 25. The rod 20 mistletoe given in its displacement by the cavity 19 receiving the end of the stepped part 18 of the rod 20 has its flat part 23 placed, for example, inside the first conduit 25, on a piston 26 held in a position locked by through, for example, a shear pin 27; this first conduit 25 is in direct connection with a second conduit 28 for the arrival of gases from a generator of the ejection system not shown in this figure 2. This pneumatic unlocking device ensures both the simultaneous ejection of the sub -munitions on board the body 1 of the vector. Indeed, in unlocking systems mechanical by rods, each movable retaining flange 9 was locked by a mechanical system which favored a simultaneous release of the different submunitions due to the different reaction times of the commands coming from the mechanical systems. Within the framework of our invention, each pneumatic unlocking device releases two fixing systems, that is to say two movable holding flanges 9 under the effect of a rod 20 which can translate thanks to the gases of a generator of the system ejection actuating a piston 26 and passing from a locked position to an unlocked position. This system makes it possible to reduce the number of unlocking devices since, in the same embodiment, with the same number of supports fixed on each munition, only six devices are used instead of twelve for a mechanical device.

La figure 3 représente une coupe transversale d'un dispositif de déverrouillage pneumatique d'un système de fixation selon l'invention en position déverrouillée. La mise en en oeuvre du système d'éjection provoque le déverrouillage simultané des systèmes de fixation maintenant les sous-munitions sur le corps du vecteur. Après l'initiation du générateur de gaz du système d'éjection, à une pression P₁ inférieure à la pression P₂ de gonflement des sacs, les gaz sont envoyés vers le piston 26 qui, sous la pression P₁, cisaille la goupille de cisaillement 27 entrainant ainsi la tige 20 dans un mouvement de translation (le déplacement est représenté par les flèches 29). Cette tige 20 s'engage dans la cavité 19 prévue à cet effet jusqu'au bouchon de fermeture 21 de cette cavité 19. Le galet 17 reposant sur la partie étagée 18 dont le diamètre et la largeur, avant le déplacement de la tige 20, empêchent tout mouvement de la bride de maintien 9, bascule sur la partie centrale 22 dont le diamètre et la largeur autorisent la libération du système de fixation grâce à la rotation de la bride de maintien 9 autour de l'axe de rotation 15. Ce galet 17 est, par exemple, en acier. La bride de maintien 9 libère alors l'appui extérieur 7 de la sous-munition et ceci de part et d'autre de l'extrémité supérieure 30 du corps 1 du vecteur, laissant ainsi échapper les sous-munitions embarquées sur le corps 1 du vecteur.Figure 3 shows a cross section of a pneumatic unlocking device of a fastening system according to the invention in the unlocked position. The implementation of the ejection system causes the simultaneous unlocking of the fastening systems maintaining the submunitions on the body of the vector. After the initiation of the gas generator of the ejection system, at a pressure P₁ lower than the pressure P₂ for inflating the bags, the gases are sent to the piston 26 which, under the pressure P₁, shears the shear pin 27 causing thus the rod 20 in a translational movement (the displacement is represented by the arrows 29). This rod 20 engages in the cavity 19 provided for this purpose up to the closure plug 21 of this cavity 19. The roller 17 resting on the stepped part 18 whose diameter and width, before the displacement of the rod 20, prevent any movement of the retaining flange 9, switches on the central part 22 whose diameter and width allow the release of the fixing system by virtue of the rotation of the retaining flange 9 around the axis of rotation 15. This roller 17 is, for example, steel. The retaining flange 9 then releases the external support 7 from the submunition and this on either side of the end upper 30 of the body 1 of the vector, thus letting the submunitions on board escape the body 1 of the vector.

Pour limiter la transmission des vibrations entre les sous-munitions et la structure du vecteur, un système d'amortisseurs servant de système de découplage peut être mis en place dans la réalisation. En effet, il suffit de remplacer la partie fixe 8, par exemple, en acier, liée à l'aile 4 de la structure du vecteur, par un amortisseur absorbant les différentes vibrations susceptibles d'être transmises et évitant ainsi une détérioration possible de la sous-munition.To limit the transmission of vibrations between the submunitions and the structure of the vector, a shock absorber system serving as a decoupling system can be implemented in the embodiment. Indeed, it suffices to replace the fixed part 8, for example, of steel, linked to the wing 4 of the structure of the vector, by a damper absorbing the various vibrations capable of being transmitted and thus avoiding possible deterioration of the submunition.

Ce dispositif de déverrouiliage pneumatique de sous-munitions s'applique plus particulièrement sur des sous-munitions sensibles c'est-à-dire tout genre de projectiles utilisés dans un environnement sévère où des précautions importantes sont à prendre pour éviter un transfert de vibrations entrainant une détérioration ou une activation des parties fragiles de la sous-munition. Ce dispositif selon l'invention peut s'appliquer à tout genre de système utilisant un dispositif de fixation possédant les propriétés du dispositif selon l'invention.This pneumatic unlocking device for submunitions applies more particularly to sensitive submunitions, that is to say all kinds of projectiles used in a harsh environment where important precautions must be taken to avoid a transfer of vibrations causing deterioration or activation of fragile parts of the submunition. This device according to the invention can be applied to any kind of system using a fixing device having the properties of the device according to the invention.

Claims (9)

1. Dispositif de déverrouillage d'un système de fixation composé d'une bride de maintien mobile (9) serrant une sous-munition (2), contre des appuis (7) réalisés sur la sous-munition, par l'intermédiaire d'un système de verrouillage set maintenant des sous-munitions (2) embarquées dans un vecteur, ce système de fixation étant déclenché préalablement ou simultanément avec la mise en oeuvre d'un système d'éjection, dispositif caractérisé en ce qu'il comporte un système pneumatique et des moyens pour envoyer une partie des gaz d'un générateur de gaz du système d'éjection sur le système pneumatique commandant le déverrouillage du système de fixation.1. Device for unlocking a fixing system composed of a movable retaining flange (9) clamping a submunition (2), against supports (7) produced on the submunition, by means of a locking system now set submunitions (2) embedded in a vector, this fixing system being triggered before or simultaneously with the implementation of an ejection system, device characterized in that it comprises a system pneumatic and means for sending part of the gases from a gas generator of the ejection system to the pneumatic system controlling the unlocking of the fastening system. 2. Dispositif de déverrouiliage selon la revendication 1, caractérisé en ce que la sous-munition (2) est une sous-munition sensible.2. Unlocking device according to claim 1, characterized in that the submunition (2) is a sensitive submunition. 3. Dispositif de déverrouillage selon la revendication 1, caractérisé en ce qu'il comporte un premier conduit (28), disposé à l'intérieur de la structure du vecteur et dans lequel est dirigé la partie des gaz provenant du système d'éjection.3. Unlocking device according to claim 1, characterized in that it comprises a first conduit (28), disposed inside the structure of the vector and in which is directed the part of the gases coming from the ejection system. 4. Dispositif de déverrouillage selon la revendication 3, caractérisé en ce que le premier conduit (28) est lié au système pneumatique positionné dans un deuxième conduit (25) et maintenu dans une position verrouiilée par une goupille de cisaillement (27).4. Unlocking device according to claim 3, characterized in that the first conduit (28) is connected to the pneumatic system positioned in a second conduit (25) and maintained in a locked position by a shear pin (27). 5. Dispositif de déverrouillage selon la revendication 4, caractérisé en ce que le système pneumatique est constitué d'un piston (26) agissant sur une tige (20) maintenant la bride de maintien mobile (9) en position verrouillée lorsqu'aucune action n'a été mise en oeuvre.5. Unlocking device according to claim 4, characterized in that the pneumatic system consists of a piston (26) acting on a rod (20) holding the flange movable holding (9) in the locked position when no action has been taken. 6. Dispositif de déverrouillage selon la revendication 5, caractérisé en ce que la tige (20) comporte une partie plate (23) reposant sur le piston (26)) une partie centrale (22) reliant la partie plate (23) à une partie étagée (18).6. Unlocking device according to claim 5, characterized in that the rod (20) comprises a flat part (23) resting on the piston (26)) a central part (22) connecting the flat part (23) to a part stepped (18). 7. Dispositif de déverrouiliage selon la revendication 6, caractérisé en ce que la partie étagée (18) est translatée à l'intérieur d'une cavité (19) fermée par un bouchon de fermeture (21) pour permettre à la bride de maintien mobile (9) de passer d'une position verrouillée à une position déverrouillée.7. Unlocking device according to claim 6, characterized in that the stepped part (18) is translated inside a cavity (19) closed by a closure plug (21) to allow the movable retaining flange (9) to move from a locked position to an unlocked position. 8. Dispositif de déverrouillage selon la revendication 7, caractérisé en ce que le verrouillage et le déverrouillage de la bride de maintien mobile (9) est assurée conjointement par la tige (20) et par un galet (17) fixé à l'extrémité de la bride de maintien mobile (9) et reposant à tout moment sur cette tige (20).8. Unlocking device according to claim 7, characterized in that the locking and unlocking of the movable retaining flange (9) is ensured jointly by the rod (20) and by a roller (17) fixed to the end of the movable retaining flange (9) and resting at all times on this rod (20). 9. Dispositif de déverrouillage selon l'une des revendications précédentes, caractérisé en ce que la translation de la tige (20) assure le déverrouillage de deux systèmes de fixation permettant la libération simultanée des sous-munitions.9. Unlocking device according to one of the preceding claims, characterized in that the translation of the rod (20) ensures the unlocking of two fixing systems allowing the simultaneous release of the submunitions.
EP90400088A 1989-01-17 1990-01-12 Pneumatic unlocking device for ammunition deployed from a carrying projectile Withdrawn EP0379402A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900483A FR2641858B1 (en) 1989-01-17 1989-01-17 PNEUMATIC UNLOCKING DEVICE FOR LOADABLE AMMUNITION FROM A VECTOR
FR8900483 1989-01-17

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EP0379402A1 true EP0379402A1 (en) 1990-07-25

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US (1) US4998480A (en)
EP (1) EP0379402A1 (en)
CA (1) CA2007876A1 (en)
FR (1) FR2641858B1 (en)

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Also Published As

Publication number Publication date
FR2641858B1 (en) 1991-03-15
US4998480A (en) 1991-03-12
FR2641858A1 (en) 1990-07-20
CA2007876A1 (en) 1990-07-17

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