EP0831292B1 - Device for securing submunitions loaded inside a container - Google Patents

Device for securing submunitions loaded inside a container Download PDF

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Publication number
EP0831292B1
EP0831292B1 EP19970402191 EP97402191A EP0831292B1 EP 0831292 B1 EP0831292 B1 EP 0831292B1 EP 19970402191 EP19970402191 EP 19970402191 EP 97402191 A EP97402191 A EP 97402191A EP 0831292 B1 EP0831292 B1 EP 0831292B1
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EP
European Patent Office
Prior art keywords
container
strap
submunitions
straps
submunition
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
Application number
EP19970402191
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German (de)
French (fr)
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EP0831292A1 (en
Inventor
Patrick THOMSON-CSF S.C.P.I Cohe
Jean-François THOMSON-CSF S.C.P.I Denis
Bertrand THOMSON-CSF S.C.P.I Roucoux
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.)
TDA Armements SAS
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TDA Armements SAS
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Publication date
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Publication of EP0831292A1 publication Critical patent/EP0831292A1/en
Application granted granted Critical
Publication of EP0831292B1 publication Critical patent/EP0831292B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • 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
    • F42B12/60—Cluster 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 securing to the inside of a container of submunitions loaded inside a launcher tube on aircraft or missile type devices, in particular.
  • This type of ejection usually requires the use of air bags placed between the submunitions and the container walls and a retaining strap to hold the submunitions until the pressure in the bags has reached a sufficient value to ensure the desired ejection speed.
  • the strap is then breaks, and the submunitions are ejected thanks to the thrust delivered by the bags.
  • the strap performs both functions which are to secure the submunitions in the container and to control the pressure in the bags to regulate the conditions for ejecting the submunition.
  • the object of the invention is to overcome the aforementioned drawbacks.
  • the invention relates to a device for securing to the inside of a container of submunitions loaded inside a launcher tube according to the configuration defined in the claim 1.
  • the advantage of the invention is that, thanks to the use of front and rear straps provide firm hold of submunitions at when the container is launched, thus avoiding an escape early submunitions by rupture of the central strap. She permits also to print a maximum thrust at the ejection of the submunitions ensuring perfect inflation of the ejection bags and modulating acceleration of ejection regardless of the holding efforts necessary for the previous phases.
  • the lashing device according to the invention which is shown in Figures 1, 2 and 3 is intended to maintain inside a container 1 a specified number of rocket or bomb submunitions 2 per example, oblong and cylindrical and possibly having a tail to provide them with good flight stability.
  • the container 1 is compartmentalized by a number of compartments 3 equal to the number of submunitions to be transported.
  • the compartments 3 are separated from each other by rectangular partitions 4 fixed by one of their largest side the along a central beam 5 which extends over the entire length of the container 1.
  • the stowage of a submunition in a compartment 3 is secured by three straps 3a, 3b and 3c, called respectively below, front strap, back strap and intermediate or central strap.
  • These straps each surround a portion of submunition. They are tense by one of their ends around the submunition 2 which they enclose, by tensioning screws 6, or any other equivalent tensioning means, fixed on the partitions 4. Pyrotechnic shears 7 enclose the screws tension 6 of the front and rear straps to separate the submunitions before they are ejected from container 1. No shears central pyrotechnic is not intended to separate the central strap 3c of the submunition, however its breaking strength is calibrated means for example of a notch 8 cut in the direction of its width, to allow the central strap alone to maintain momentary of the submunition in its compartment when the straps front and rear are released.
  • both the weight of the submunition and the centrifugal force that is exerted on the submunition by the rotation of the container 1 after its ejection from the launcher tube are arranged between the body of the submunitions and partitions 4 to allow during their inflation the extension of the central strap 3c and its rupture to ensure ejection of submunitions out of their compartment with reduced acceleration and well under control.
  • the bags 9 are inflated by a cane pyrotechnic 10 housed inside the central beam 5 in its direction longitudinal.
  • the rotation of the container 1 during its ejection from the launcher tube is ensured by keys 11 arranged on the side of the bulkheads opposite to that which is fixed to the central beam 5 and engaged on ramps or in helical grooves formed inside the launcher tube.
  • the device according to the invention makes it possible to maintain very strongly the submunitions inside their compartment by the action of the straps 3a, 3b and 3c front and rear at the time of ejection of the container 1 outside the launch tube. Subsequently, during the flight and before ejecting submunitions 2 from container 1, shears pyrotechnics cut the core of the tensioning screws 6 to release the front and rear straps.
  • the invention remains applicable to the dropping of a any number of submunitions and whatever forms that can be given to the container.

Description

La présente invention concerne un dispositif pour l'arrimage à l'intérieur d'un conteneur de sous-munitions embarquées à l'intérieur d'un tube lanceur sur des engins de type aéronef ou missile, notamment.The present invention relates to a device for securing to the inside of a container of submunitions loaded inside a launcher tube on aircraft or missile type devices, in particular.

Pour permettre la libération des sous-munitions de leur conteneur lors de leur éjection de l'engin sur lequel elles sont embarquées, il est connu d'utiliser comme dispositif d'arrimage des dispositifs capables d'effectuer une libération rapide de celles-ci, tels que par exemple des sangles à casser, ou encore des boulons explosifs. Pour être efficaces, ces dispositifs sont dimensionnés afin de résister à des efforts importants de roulis notamment qui apparaissent lors du largage du conteneur hors du tube lanceur. L'avantage d'utiliser un tube lanceur est qu'il permet une meilleure assiette du conteneur et donc une bonne maítrise des vitesses et des accélérations latérales grâce notamment à un rainurage des parois intérieures du tube lanceur qui imprime une mise en rotation du conteneur au moment de son éjection. Ce type d'éjection nécessite usuellement l'utilisation de sacs gonflables disposés entre les sous-munitions et les parois du conteneur et d'une sangle de maintien pour maintenir les sous-munitions jusqu'à ce que la pression dans les sacs ait atteint une valeur suffisante pour assurer la vitesse d'éjection souhaitée. La sangle se rompt alors, et les sous-munitions sont éjectées grâce à la poussée délivrée par les sacs. Habituellement, la sangle assure à la fois deux fonctions qui sont d'assurer l'arrimage des sous-munitions dans le conteneur et de contrôler la pression dans les sacs afin d'exercer une régulation des conditions d'éjection de la sous-munition. Cependant, dans certaines applications, il arrive que les mises en oeuvre de ces deux fonctions soient incompatibles l'une avec l'autre, notamment lorsqu'il est recherché une faible accélération à l'éjection ce qui demande d'utiliser une sangle à faible force de rupture, alors qu'il faut aussi disposer d'une force de rupture élevée pour assurer un fort maintien des sous-munitions lors des fortes accélérations qui peuvent se produire durant le vol. Des dispositifs d'arrimage de ce type sont décrits, par exemple, dans les documents DE-A-36 02 947 et US-A-2 972 946.To allow the release of submunitions from their container during their ejection from the vehicle on which they are loaded, it is known to use devices capable of carrying out rapid release of these, such as for example straps break, or even explosive bolts. To be effective, these devices are dimensioned to withstand significant roll forces especially which appear when the container is released from the tube launcher. The advantage of using a launcher tube is that it allows better container attitude and therefore good control of speeds and lateral accelerations thanks in particular to a grooving of the walls interior of the launcher tube which prints a rotation of the container at the time of its ejection. This type of ejection usually requires the use of air bags placed between the submunitions and the container walls and a retaining strap to hold the submunitions until the pressure in the bags has reached a sufficient value to ensure the desired ejection speed. The strap is then breaks, and the submunitions are ejected thanks to the thrust delivered by the bags. Usually the strap performs both functions which are to secure the submunitions in the container and to control the pressure in the bags to regulate the conditions for ejecting the submunition. However, in some applications, sometimes the implementations of these two functions are incompatible with each other, especially when looking for a low acceleration at ejection which requires using a low strap breaking force, whereas a high breaking force must also be available to ensure a strong maintenance of the submunitions during strong accelerations that may occur during flight. Devices such tie-downs are described, for example, in DE-A-36 02 947 and US-A-2 972 946.

Le but de l'invention est de pallier les inconvénients précités. The object of the invention is to overcome the aforementioned drawbacks.

A cet effet, l'invention a pour objet un dispositif pour l'arrimage à l'intérieur d'un conteneur de sous-munitions embarquées à l'intérieur d'un tube lanceur suivant la configuration définie dans la revendication 1. To this end, the invention relates to a device for securing to the inside of a container of submunitions loaded inside a launcher tube according to the configuration defined in the claim 1.

L'invention a pour avantage qu'elle permet grâce à l'usage des sangles avant et arrière d'assurer un maintien ferme des sous-munitions au moment du lancement du conteneur en évitant ainsi un échappement précoce des sous-munitions par rupture de la sangle centrale. Elle permet également d'imprimer une poussée maximale à l'éjection des sous-munitions en assurant un gonflage parfait des sacs d'éjection et de moduler l'accélération d'éjection indépendamment des efforts de maintien nécessaires aux phases précédentes.The advantage of the invention is that, thanks to the use of front and rear straps provide firm hold of submunitions at when the container is launched, thus avoiding an escape early submunitions by rupture of the central strap. She permits also to print a maximum thrust at the ejection of the submunitions ensuring perfect inflation of the ejection bags and modulating acceleration of ejection regardless of the holding efforts necessary for the previous phases.

D'autres caractéristiques et avantages de l'invention apparaítront plus clairement dans la description qui suit, faite en regard des dessins annexés qui représentent :

  • la figure 1, une vue en perspective d'un dispositif d'arrimage selon l'invention,
  • la figure 2, le dispositif de la figure 1 représenté en vue de face, et
  • la figure 3, une vue en coupe transversale du dispositif représenté à la figure 1.
Other characteristics and advantages of the invention will appear more clearly in the description which follows, given with reference to the appended drawings which represent:
  • FIG. 1, a perspective view of a securing device according to the invention,
  • FIG. 2, the device of FIG. 1 shown in front view, and
  • Figure 3 is a cross-sectional view of the device shown in Figure 1.

Le dispositif d'arrimage selon l'invention qui est représenté aux figures 1, 2 et 3 est destiné à maintenir à l'intérieur d'un conteneur 1 un nombre déterminé de sous-munitions 2 de type roquette ou bombe par exemple, de forme oblongue et cylindrique et possédant éventuellement un empennage pour leur assurer une bonne stabilité de vol. Pour transporter les sous-munitions le conteneur 1 est compartimenté par un nombre de compartiments 3 égal au nombre de sous-munitions à transporter. Dans l'exemple des figures 1, 2 et 3, les compartiments 3 sont séparés entre eux par des cloisons rectangulaires 4 fixées par un de leurs plus grand côté le long d'une poutre centrale 5 qui s'étend sur toute la longueur du conteneur 1. L'arrimage d'une sous-munition dans un compartiment 3 est assuré par trois sangles 3a, 3b et 3c, dénommées respectivement ci-après, sangle avant, sangle arrière et sangle intermédiaire ou centrale. Ces sangles entourent chacune une portion de sous-munition. Elles sont tendues par l'une de leurs extrémités autour de la sous-munition 2 qu'elles enserrent, par des vis de tension 6, ou tous autres moyens de tension équivalents, fixées sur les cloisons 4. Des cisailles pyrotechniques 7 enserrent les vis de tension 6 des sangles avant et arrière afin de désolidariser les sous-munitions avant leur éjection du conteneur 1. Aucune cisaille pyrotechnique centrale n'est prévue pour désolidariser la sangle centrale 3c de la sous-munition, cependant sa résistance à la rupture est calibrée au moyen par exemple d'une encoche 8 découpée dans le sens de sa largeur, pour permettre à la sangle centrale d'assurer à elle seule le maintien momentané de la sous-munition dans son compartiment lorsque les sangles avant et arrière sont libérées. Pour effectuer la calibration de la résistance de rupture de la sangle centrale, il est tenu compte à la fois du poids de la sous-munition et de la force centrifuge qui est exercée sur la sous-munition par la rotation du conteneur 1 après son éjection du tube lanceur. Des sacs pyrotechniques 9 sont disposés entre le corps des sous-munitions et des cloisons 4 pour permettre lors de leur gonflage la mise en extension de la sangle centrale 3c et sa rupture afin d'assurer une éjection des sous-munitions hors de leur compartiment avec une accélération réduite et bien maítrisée. Le gonflage des sacs 9 est assuré par une canne pyrotechnique 10 logée à l'intérieur de la poutre centrale 5 dans sa direction longitudinale. La mise en rotation du conteneur 1 lors de son éjection du tube lanceur est assurée par des clavettes 11 disposées sur le côté des cloisons opposé à celui qui est fixé à la poutre centrale 5 et engagées sur des rampes ou dans des rainures hélicoïdales ménagées à l'intérieur du tube lanceur.The lashing device according to the invention which is shown in Figures 1, 2 and 3 is intended to maintain inside a container 1 a specified number of rocket or bomb submunitions 2 per example, oblong and cylindrical and possibly having a tail to provide them with good flight stability. To carry the submunitions the container 1 is compartmentalized by a number of compartments 3 equal to the number of submunitions to be transported. In the example of Figures 1, 2 and 3, the compartments 3 are separated from each other by rectangular partitions 4 fixed by one of their largest side the along a central beam 5 which extends over the entire length of the container 1. The stowage of a submunition in a compartment 3 is secured by three straps 3a, 3b and 3c, called respectively below, front strap, back strap and intermediate or central strap. These straps each surround a portion of submunition. They are tense by one of their ends around the submunition 2 which they enclose, by tensioning screws 6, or any other equivalent tensioning means, fixed on the partitions 4. Pyrotechnic shears 7 enclose the screws tension 6 of the front and rear straps to separate the submunitions before they are ejected from container 1. No shears central pyrotechnic is not intended to separate the central strap 3c of the submunition, however its breaking strength is calibrated means for example of a notch 8 cut in the direction of its width, to allow the central strap alone to maintain momentary of the submunition in its compartment when the straps front and rear are released. To perform the resistance calibration of the central strap, both the weight of the submunition and the centrifugal force that is exerted on the submunition by the rotation of the container 1 after its ejection from the launcher tube. Bags pyrotechnics 9 are arranged between the body of the submunitions and partitions 4 to allow during their inflation the extension of the central strap 3c and its rupture to ensure ejection of submunitions out of their compartment with reduced acceleration and well under control. The bags 9 are inflated by a cane pyrotechnic 10 housed inside the central beam 5 in its direction longitudinal. The rotation of the container 1 during its ejection from the launcher tube is ensured by keys 11 arranged on the side of the bulkheads opposite to that which is fixed to the central beam 5 and engaged on ramps or in helical grooves formed inside the launcher tube.

Ainsi réalisé, le dispositif selon l'invention permet de maintenir très fortement les sous-munitions à l'intérieur de leur compartiment par l'action des sangles 3a, 3b et 3c avant et arrière à l'instant d'éjection du conteneur 1 à l'extérieur du tube lanceur. Par la suite, lors du vol et avant l'éjection des sous-munitions 2 hors du conteneur 1, les cisailles pyrotechniques sectionnent l'âme des vis de tension 6 pour libérer les sangles avant et arrière. Celles-ci sont alors éjectées du conteneur 1 par le simple appel d'air qui est produit, et la sangle centrale 3c assure alors à elle seule le maintien momentané des sous-munitions contre les seuls efforts qui sont appliqués sur les sous-munitions survenant pendant cette phase de vol et qui sont beaucoup plus moindres que ceux qui leur sont appliqués lors de l'éjection du tube lanceur du fait notamment du ralentissement de la vitesse de rotation du conteneur par la résistance de l'air. De cette façon, l'éjection des sous-munitions peut avoir lieu avec une accélération réduite et bien contrôlée sous l'action du gonflage des sacs pyrotechniques 9.Thus produced, the device according to the invention makes it possible to maintain very strongly the submunitions inside their compartment by the action of the straps 3a, 3b and 3c front and rear at the time of ejection of the container 1 outside the launch tube. Subsequently, during the flight and before ejecting submunitions 2 from container 1, shears pyrotechnics cut the core of the tensioning screws 6 to release the front and rear straps. These are then ejected from container 1 by the simple call of air which is produced, and the central strap 3c then ensures to it only the temporary maintenance of the submunitions against the only efforts which are applied to submunitions occurring during this flight phase and which are much less than those applied to them during ejection of the launcher tube mainly due to the slowing down of the speed container rotation by air resistance. In this way, the ejection submunitions can take place with reduced acceleration and well controlled by the inflation of the pyrotechnic bags 9.

Naturellement, l'invention reste applicable au largage d'un nombre quelconque de sous-munitions et quelles que soient les formes qui peuvent être données au conteneur.Naturally, the invention remains applicable to the dropping of a any number of submunitions and whatever forms that can be given to the container.

D'autres variantes d'exécution de l'invention sont également possibles notamment en ce qui concerne le système de libération des sangles qui peut être simplifié en ne prévoyant par exemple, qu'une seule cisaille pyrotechnique pour les deux sangles avant et arrière.Other variant embodiments of the invention are also possible especially with regard to the release system of straps which can be simplified by providing for example only one pyrotechnic shears for the two front and rear straps.

Claims (10)

  1. Device for securing inside a container (1), submunitions (2) which are loaded inside a launch tube comprising a first and a second strap (3a, 3b) which straps are arranged respectively at the front and at the rear of each submunition so as to hold it inside the container while the container is ejected from the launch tube, and an intermediate third strap (3c) arranged between the first and second strap (3a, 3b), characterized in that this third strap 3c is able on its own, on the one hand, to hold the submunition (2) in the container (1) after it has been ejected when the first and second straps (3a, 3b) are released and, on the other hand, to launch the submunition (2) from the container (1).
  2. Device according to Claim 1, characterized in that the straps 3a and 3b are released simultaneously at a moment different from and preceding the release of the strap 3c.
  3. Device according to either one of Claims 1 and 2, characterized in that the straps 3a and 3b are straps with low breaking force in the ejection phase and the strap 3c is a strap with a high breaking force in the phase of holding the submunitions during flight.
  4. Device according to any one of Claims 1 to 3, characterized in that it comprises inflatable pyrotechnic bags (9) arranged between the submunitions (2) and the container (1) to launch the submunition (2) from the container (1) by breaking the third strap (3c).
  5. Device according to any one of Claims 1 to 4, characterized in that the third strap (3c) has a breaking strength which is calibrated by means of a notch (8) cut into its width.
  6. Device according to any one of Claims 1 to 5, characterized in that it comprises at least one pyrotechnic shear (7) to release the first and second straps (3a, 3b).
  7. Device according to any one of Claims 1 to 6, characterized in that the first and second straps (3a, 3b) are tensioned by tensioning screws (6).
  8. Device according to any one of Claims 1 to 7, characterized in that the container (1) is compartmentalized with a number of compartments (3) equal to the number of submunitions (2) to be transported.
  9. Device according to Claim 8, characterized in that the compartments (3) are separated from one another by rectangular partitions (4) fixed along one of their long sides along the common central spar (5).
  10. Device according to Claim 9, characterized in that it comprises a pyrotechnic injection tube (10) housed inside the central spar (5) for inflating the pyrotechnic bags (9).
EP19970402191 1996-09-20 1997-09-19 Device for securing submunitions loaded inside a container Expired - Lifetime EP0831292B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9611492 1996-09-20
FR9611492A FR2753786B1 (en) 1996-09-20 1996-09-20 DEVICE FOR STOWING INSIDE A CONTAINER OF ON-BOARD UNDER-AMMUNITION

Publications (2)

Publication Number Publication Date
EP0831292A1 EP0831292A1 (en) 1998-03-25
EP0831292B1 true EP0831292B1 (en) 2003-01-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970402191 Expired - Lifetime EP0831292B1 (en) 1996-09-20 1997-09-19 Device for securing submunitions loaded inside a container

Country Status (3)

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EP (1) EP0831292B1 (en)
DE (1) DE69718404T2 (en)
FR (1) FR2753786B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972946A (en) * 1950-07-07 1961-02-28 Thomas C Poulter Bomb cluster
DE3506223A1 (en) * 1985-02-22 1986-08-28 Diehl GmbH & Co, 8500 Nürnberg Device for fixing built-in parts of a munition container
DE3602947C1 (en) * 1986-01-31 1990-06-28 Messerschmitt Boelkow Blohm Sub-ammunition launching mechanism from carrier missile - has bellows, axially open at both ends, with gap between both front walls and bellows ends
FR2656414B1 (en) * 1989-12-22 1993-01-22 Thomson Brandt Armements RETENTION SYSTEMS OF SUBMUNITIONS EMBEDDED IN A VECTOR.
WO1992003692A1 (en) * 1990-08-24 1992-03-05 Talley Defense Systems, Incorporated Tailored munition ejection system

Also Published As

Publication number Publication date
FR2753786A1 (en) 1998-03-27
EP0831292A1 (en) 1998-03-25
FR2753786B1 (en) 1998-12-11
DE69718404T2 (en) 2003-10-30
DE69718404D1 (en) 2003-02-20

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