EP2065669A1 - Vehicle self protection device - Google Patents

Vehicle self protection device Download PDF

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Publication number
EP2065669A1
EP2065669A1 EP08291061A EP08291061A EP2065669A1 EP 2065669 A1 EP2065669 A1 EP 2065669A1 EP 08291061 A EP08291061 A EP 08291061A EP 08291061 A EP08291061 A EP 08291061A EP 2065669 A1 EP2065669 A1 EP 2065669A1
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EP
European Patent Office
Prior art keywords
screen
enclosure
housing
protection
deployment
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Withdrawn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
EP08291061A
Other languages
German (de)
French (fr)
Inventor
Jean-François Cazalieres
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.)
Nexter Systems SA
Original Assignee
Nexter Systems SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nexter Systems SA filed Critical Nexter Systems SA
Publication of EP2065669A1 publication Critical patent/EP2065669A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/007—Reactive armour; Dynamic armour
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H11/00—Defence installations; Defence devices
    • F41H11/02—Anti-aircraft or anti-guided missile or anti-torpedo defence installations or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/023—Armour plate, or auxiliary armour plate mounted at a distance of the main armour plate, having cavities at its outer impact surface, or holes, for deflecting the projectile
    • F41H5/026—Slat armour; Nets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/06—Shields
    • F41H5/16—Shields for ordnance or tanks

Definitions

  • the technical sector of the present invention is that of vehicle protection devices.
  • such a screen can trigger the explosive charge at a greater distance from the vehicle, which reduces the perforation efficiency of the load.
  • the patent DE-3337115 describes a screen disposed on the turret of the vehicle connected to telescopic poles for deploying the screen around the vehicle that is to say the roof and the lateral sides. It is indicated that the screen is made in the form of a net in order to recover grenades. It is understood that such a protection device is long to implement and is ineffective against projectiles animated with a very high speed.
  • the patent DE-2507351 describes a self-protection system against hollow charge ammunition, consisting of a net integral with a deployable mast at the end of which the net is fixed.
  • the net is held by masses 17 or 19 attached to the base of the net.
  • the masses exert their action on the net regardless of the position of the net even when the device is out of action.
  • the patent US-2007/0180983 describes a protection system consisting of a net attached to the wall of the vehicle to be protected.
  • the net is connected to the vehicle by a system of telescopic arms to maintain a gap between the net and the vehicle.
  • the net occupies a large part of the lateral surface of the vehicle.
  • the deployment means described are also complex and cumbersome.
  • the object of the present invention is to provide a tamper device implementing a screen in the form of a sail, compact and easy to implement.
  • the subject of the invention is therefore a self-protection device for an enclosure by deployment of a flexible screen in front of the enclosure, characterized in that it comprises a housing enclosing the flexible screen and means for providing the deployment of said screen, said housing having a fixed part integral with the enclosure and a detachable part, and in that it comprises means making it possible to cut the detachable part and to ensure the deployment of said screen, said screen being connected to its two opposite ends on the one hand to the fixed part and on the other hand to a ballast.
  • the housing consists of a base fixed to the enclosure and a cover constituting the detachable part.
  • the housing is cut by a pyrotechnic means.
  • the device comprises two deployable arms fixed at one of their end to the fixed part of the housing and applied against the screen to ensure, after deployment of the screen, the maintenance thereof away from the speaker.
  • the two arms are held in folded position by the screen.
  • the two arms are subjected to the action of a spiral spring.
  • the detachable part constitutes a weight of the screen.
  • the pyrotechnic means is electrically controlled remotely.
  • the flexible screen is constituted by a Kevlar ® / aramid fleece.
  • the invention also relates to the application of the device according to the invention to the protection of a vehicle, for example a military vehicle.
  • a first advantage of the device according to the invention lies in its very small footprint on the enclosure or the vehicle.
  • Another advantage lies in the fact that the vehicle can be provided with the device according to the invention on virtually all its walls.
  • Another advantage lies in the very low mass of the device and its ease of implementation.
  • Another advantage lies in the adaptation to any type of enclosure or vehicle to be protected.
  • FIG. 1 there is shown a view of a housing 1 in the form of a parallelepiped comprising a base 2 connected to a cover 3 within which a flexible screen 4 is folded into different layers.
  • the screen 4 is in the form of a web whose folds are adjacent to the inner walls of the housing.
  • the term "sail” is intended to mean a thin and flexible sheet having a substantially constant thickness.
  • the screen 4 may be made of a material consisting of Kevlar ® / aramid.
  • the base 2 of the housing is fixed on the enclosure (not shown) to be protected by means of screws 5 or by any other suitable means.
  • the cover 3 constitutes with the base a monobloc housing but thinned portions 6, 7 and 8, constituting breaking primers, are provided in the thickness of this cover to ensure separation from the base 2.
  • holes 9, 10 and 11 respectively are provided in which a pyrotechnic composition (in the form of detonating cords) is inserted.
  • a pyrotechnic composition in the form of detonating cords
  • All the cords are connected to each other and to a pyrotechnic initiator (not shown) to cause separation and ejection of the lid 3 by causing rupture of the rupture primers of the wall of the lid.
  • the initiator is connected to an electronic control means (not shown).
  • the two ends of the screen 4 consist on the one hand of the strand 13a which is fixed to the base 2 by bolts 14 and on the other hand by the strand 13b which is fixed to the cover 3.
  • the strand 13a is clamped between the base 2 and two support tongues 20 and 23 which carry welded nuts (or tappings) - see figure 3 .
  • the strand 13b is clamped between the cover 3 and a thin metal counterplate 29 (see figure 4 ) by means of bolts 15 (or nuts welded to the counterplate 29).
  • the two articulated arms 16 and 17 for keeping the screen 4 away from the enclosure.
  • the two arms are held in the folded position by the screen 4, the deployment of the screen 4 is effected in the direction of the arrow F.
  • These two articulated arms are each fixed on a pivot 18 (or 21) articulated with respect to the base 2 by means of a spring 19 (or 22) integral with the support 20 (or 23).
  • the supports 20, 23 are fixed directly on the base 2 and they pinch the end fold 13a of the screen 4.
  • the length of the arms 16 and 17 is provided in such a way that a sufficient distance (of the order of 0 , 5 m) is maintained between the enclosure and the screen after deployment of the latter. It is at this distance that a projectile rocket will be initiated. This distance is greater than the optimum distance for the perforation of a hollow charge. The effectiveness of the incident projectile will be reduced.
  • the figure 3 illustrates in more detail the structure of the arms 16 and 17.
  • Each arm 16 (or 17) is rotatably mounted about a pivot 18 (or 21) integral with the support 20 (or 23) and is subjected to the action of a spring 19 (or 22) wound spiral.
  • the spring 19 is then tensioned.
  • the arms 16 and 17 are released and ensure through the springs 19, 22 the deployment of the screen 4.
  • the springs 19 and 22 bring these arms into a substantially perpendicular direction along the arrow F '. This deployment allows to remove the screen of the speaker.
  • the figure 4 represents a section at the pivot point of one of the arms 16 or 17.
  • the elements illustrated by the figure 1 There is therefore the base 2 provided with a fixing screw 5 for fixing the housing 1 on the enclosure to be protected, the cover 3 on which the screen 4 is fixed by means of the bolts 15 and the holes 9 , 10 and 11 receiving detonating cords. In the vicinity of these holes, we find the break primers 6, 7 and 8 as explained above.
  • the figure shows the arrangement of the pivot 18 secured to the support 20 itself fixed on the other end strand 13a of the screen 4.
  • channels 25 made on an inner face of a side wall of the housing and which allow to position the pyrotechnic transmission elements between the different cords.
  • the pyrotechnic initiator (not shown) will be positioned on the sidewall considered.
  • the screen 4 is shown deployed after operation of the pyrotechnic means 9, 10, 11.
  • the screen 4 which is in the form of a continuous surface is kept away from the base 2 fixed to the enclosure (no represented) by arms 16 and 17 which have deployed as explained above.
  • the base 2 remains secured to the enclosure and the cover 3, constituting the detachable part, has been separated by remaining attached to the screen 4.
  • This cover 3 then constitutes a ballast to achieve a proper support of the screen in front of the speaker while ensuring a certain tension.
  • the screen 4 makes it possible to cause the triggering of a hollow charge rocket at a distance greater than its optimal operating distance, which decreases its effectiveness.
  • the screen can also destabilize a small caliber projectile which reduces its perforating efficiency.
  • each screen 4 delimits a first substantially plane portion 27 linked to the vehicle due to the deployment of the arms 16 and 17 (not visible in the figure) and another portion 28 connected to the lid 3 constituting the ballast in order to maintain the screen substantially flat.
  • This type of screen reduces the effectiveness of projectiles and ensure the defense of the vehicle against these projectiles.
  • the device according to the invention is actuated by control means making it possible to detect the approach of a projectile and the firing of the pyrotechnic means making it possible to deploy the screen or screens of protection.
  • control means making it possible to detect the approach of a projectile and the firing of the pyrotechnic means making it possible to deploy the screen or screens of protection.
  • These means are known to those skilled in the art and are not described.
  • the detection can be done conventionally by a radar means generating an electrical signal for firing the pyrotechnic means.
  • ballast ensuring the tensioning of the screen 4 is constituted by the cover 3 itself. It is of course possible to provide a specific ballast secured to the end of the screen and a lightened lid that will no longer be attached to the screen. This cover will then only serve to keep the screen and the arms in the folded state in the housing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

The device has a housing (1) holding a flexible screen (4) i.e. web, and a deployment unit for deploying the screen. The housing includes a fixed part i.e. base (2), connected to an enclosure to be protected. Pyrotechnic drilling units (9, 10, 11) permit cutting of a detachable part i.e. lid (3), of the housing, and assure deployment of the screen. The screen is connected at two ends opposite to the fixed part and the detachable part forming a ballast, respectively. Deployable arms assure maintenance of the screen at a distance from the enclosure, after deployment of the screen. The screen comprises a web made up of aramide fiber and Kevlar(RTM: para-aramid synthetic fiber).

Description

Le secteur technique de la présente invention est celui des dispositifs de protection des véhicules.The technical sector of the present invention is that of vehicle protection devices.

Pour protéger une enceinte, tel un véhicule, contre l'agression par un projectile on a proposé différents systèmes permettant d'interposer un écran entre l'enceinte et le projectile. Le déploiement de l'écran est alors commandé dès que le projectile est repéré et on peut se référer aux brevets DE-3337115 , DE-2507351 et US2007/0180983 .To protect an enclosure, such as a vehicle, against aggression by a projectile various systems have been proposed to interpose a screen between the enclosure and the projectile. The deployment of the screen is then commanded as soon as the projectile is spotted and we can refer to the patents DE-3337115 , DE-2507351 and US2007 / 0180983 .

Vis à vis d'un projectile de type roquette à charge creuse, un tel écran permet de provoquer le déclenchement de la charge explosive à une distance du véhicule plus importante, ce qui réduit l'efficacité de perforation de la charge.Compared to a hollow-charge rocket projectile, such a screen can trigger the explosive charge at a greater distance from the vehicle, which reduces the perforation efficiency of the load.

Vis à vis d'un projectile de petit calibre, un tel écran permet de déstabiliser le projectile ce qui réduit ses capacités de perforation.Against a small caliber projectile, such a screen can destabilize the projectile which reduces its perforation capabilities.

Ainsi, le brevet DE-3337115 décrit un écran disposé sur la tourelle du véhicule relié à des mâts télescopiques permettant de déployer l'écran autour du véhicule c'est-à-dire le toit et les côtés latéraux. On indique que l'écran est réalisé sous forme d'un filet afin de récupérer des grenades. On comprend qu'un tel dispositif de protection soit long à mettre en oeuvre et soit inefficace contre les projectiles animés d'une très grande vitesse.Thus, the patent DE-3337115 describes a screen disposed on the turret of the vehicle connected to telescopic poles for deploying the screen around the vehicle that is to say the roof and the lateral sides. It is indicated that the screen is made in the form of a net in order to recover grenades. It is understood that such a protection device is long to implement and is ineffective against projectiles animated with a very high speed.

Le brevet DE-2507351 décrit un système d'autoprotection contre des munitions à charge creuse, constitué d'un filet solidaire d'un mât déployable à l'extrémité duquel ce filet est fixé. Le filet est maintenu par des masses 17 ou 19 fixées à la base du filet. Toutefois, les masses exercent leur action sur le filet quelle que soit la position du filet même lorsque le dispositif est hors d'action.The patent DE-2507351 describes a self-protection system against hollow charge ammunition, consisting of a net integral with a deployable mast at the end of which the net is fixed. The net is held by masses 17 or 19 attached to the base of the net. However, the masses exert their action on the net regardless of the position of the net even when the device is out of action.

Le brevet US-2007/0180983 décrit un système de protection constitué par un filet fixé sur la paroi du véhicule à protéger. Le filet est relié au véhicule par un système de bras télescopiques permettant de maintenir un écart entre le filet et le véhicule. Toutefois, on voit que le filet occupe une grande partie de la surface latérale du véhicule.The patent US-2007/0180983 describes a protection system consisting of a net attached to the wall of the vehicle to be protected. The net is connected to the vehicle by a system of telescopic arms to maintain a gap between the net and the vehicle. However, it can be seen that the net occupies a large part of the lateral surface of the vehicle.

Les trois documents analysés ci-dessus présentent l'inconvénient de mettre en oeuvre un filet, ce qui implique un encombrement important au niveau du véhicule et des aménagements spécifiques.The three documents analyzed above present the disadvantage of implementing a net, which implies a significant amount of space in the vehicle and specific amenities.

Les moyens de déploiement décrits sont par ailleurs complexes et encombrants.The deployment means described are also complex and cumbersome.

Le but de la présente invention est de proposer un dispositif d'autoprotection mettant en oeuvre un écran sous forme de voile, peu encombrant et facile à mettre en oeuvre.The object of the present invention is to provide a tamper device implementing a screen in the form of a sail, compact and easy to implement.

L'invention a donc pour objet un dispositif d'autoprotection d'une enceinte par déploiement d'un écran souple en avant de l'enceinte, caractérisé en ce qu'il comprend un boîtier renfermant l'écran souple et des moyens pour assurer le déploiement dudit écran, ledit boîtier présentant une partie fixe solidaire de l'enceinte et une partie détachable, et en ce qu'il comporte des moyens permettant de provoquer une découpe de la partie détachable et d'assurer le déploiement dudit écran, ledit écran étant relié à ses deux extrémités opposées d'une part à la partie fixe et d'autre part à un lest.The subject of the invention is therefore a self-protection device for an enclosure by deployment of a flexible screen in front of the enclosure, characterized in that it comprises a housing enclosing the flexible screen and means for providing the deployment of said screen, said housing having a fixed part integral with the enclosure and a detachable part, and in that it comprises means making it possible to cut the detachable part and to ensure the deployment of said screen, said screen being connected to its two opposite ends on the one hand to the fixed part and on the other hand to a ballast.

Selon une caractéristique de l'invention, le boîtier est constitué d'une embase fixée à l'enceinte et d'un couvercle constituant la partie détachable.According to one characteristic of the invention, the housing consists of a base fixed to the enclosure and a cover constituting the detachable part.

Selon une autre caractéristique de l'invention, la découpe du boîtier est assurée par un moyen pyrotechnique.According to another characteristic of the invention, the housing is cut by a pyrotechnic means.

Selon encore une autre caractéristique de l'invention, le dispositif comporte deux bras déployables fixés à une de leur extrémité à la partie fixe du boîtier et appliqués contre l'écran pour assurer, après déploiement de l'écran, le maintien de celui-ci à distance de l'enceinte.According to yet another characteristic of the invention, the device comprises two deployable arms fixed at one of their end to the fixed part of the housing and applied against the screen to ensure, after deployment of the screen, the maintenance thereof away from the speaker.

Selon une autre caractéristique de l'invention, les deux bras sont maintenus en position repliée par l'écran.According to another characteristic of the invention, the two arms are held in folded position by the screen.

Avantageusement, les deux bras sont soumis à l'action d'un ressort spiral.Advantageously, the two arms are subjected to the action of a spiral spring.

Selon encore une autre caractéristique de l'invention, la partie détachable constitue un lest de l'écran.According to yet another characteristic of the invention, the detachable part constitutes a weight of the screen.

Avantageusement, le moyen pyrotechnique est commandé électriquement à distance.Advantageously, the pyrotechnic means is electrically controlled remotely.

Avantageusement encore, l'écran souple est constitué par un voile en Kevlar®/aramide.Advantageously, the flexible screen is constituted by a Kevlar ® / aramid fleece.

L'invention concerne également l'application du dispositif selon l'invention à la protection d'un véhicule, par exemple un véhicule militaire.The invention also relates to the application of the device according to the invention to the protection of a vehicle, for example a military vehicle.

Un tout premier avantage du dispositif selon l'invention réside dans son encombrement très faible sur l'enceinte ou le véhicule.A first advantage of the device according to the invention lies in its very small footprint on the enclosure or the vehicle.

Un autre avantage réside dans le fait que le véhicule peut être muni du dispositif selon l'invention sur pratiquement toutes ses parois.Another advantage lies in the fact that the vehicle can be provided with the device according to the invention on virtually all its walls.

Un autre avantage encore réside dans la masse très faible du dispositif et de sa facilité de mise en oeuvre.Another advantage lies in the very low mass of the device and its ease of implementation.

Un autre avantage encore réside dans l'adaptation à tout type d'enceinte ou de véhicule à protéger.Another advantage lies in the adaptation to any type of enclosure or vehicle to be protected.

D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement de la description donnée ci-après à titre indicatif en relation avec des dessins dans lesquels :

  • la figure 1 représente une vue perspective du boîtier,
  • la figure 2 est une vue montrant l'écran replié appliqué contre les bras déployables,
  • la figure 3 est une vue montrant la structure des bras déployables,
  • la figure 4 est une coupe transversale du boîtier,
  • la figure 5 est une vue montrant le déploiement de l'écran, et
  • la figure 6 représente un véhicule équipé de dispositifs d'autoprotection selon l'invention.
Other features, details and advantages of the invention will emerge more clearly from the description given below as an indication in relation to drawings in which:
  • the figure 1 represents a perspective view of the housing,
  • the figure 2 is a view showing the folded screen applied against the deployable arms,
  • the figure 3 is a view showing the structure of the deployable arms,
  • the figure 4 is a cross section of the case,
  • the figure 5 is a view showing the deployment of the screen, and
  • the figure 6 represents a vehicle equipped with self-protection devices according to the invention.

Sur la figure 1, on a représenté une vue d'un boîtier 1 se présentant sous la forme d'un parallélépipède comprenant une embase 2 reliée à un couvercle 3 à l'intérieur duquel un écran souple 4 est replié en différentes couches. Une face du couvercle a été enlevée afin de faire apparaître la disposition de cet écran. L'écran 4 se présente sous la forme d'un voile dont les plis sont adjacents aux parois internes du boîtier. On entend par voile une feuille mince et souple et ayant une épaisseur sensiblement constante. Bien entendu, toute autre forme de réalisation de l'écran peut être envisagée pourvu qu'il se présente sous la forme d'un voile. A titre d'exemple, l'écran 4 peut être réalisée en une matière constituée par du Kevlar®/aramide.On the figure 1 , there is shown a view of a housing 1 in the form of a parallelepiped comprising a base 2 connected to a cover 3 within which a flexible screen 4 is folded into different layers. One side of the cover has been removed to reveal the layout of this screen. The screen 4 is in the form of a web whose folds are adjacent to the inner walls of the housing. The term "sail" is intended to mean a thin and flexible sheet having a substantially constant thickness. Of course, any other embodiment of the screen can be envisaged provided it is in the form of a veil. For example, the screen 4 may be made of a material consisting of Kevlar ® / aramid.

L'embase 2 du boîtier est fixée sur l'enceinte (non représentée) à protéger par l'intermédiaire de vis 5 ou par tout autre moyen adéquat.The base 2 of the housing is fixed on the enclosure (not shown) to be protected by means of screws 5 or by any other suitable means.

Le couvercle 3 constitue avec l'embase un boîtier monobloc mais des parties amincies 6, 7 et 8, constituant des amorces de rupture, sont prévues dans l'épaisseur de ce couvercle afin d'assurer la séparation d'avec l'embase 2. Au niveau de ces amorces, on prévoit des percements 9, 10 et 11 respectifs dans lesquels une composition pyrotechnique (sous la forme de cordeaux détonant) est insérée. Ces cordeaux sont tout à fait classiques et ne font pas partie de l'invention. Tous les cordeaux sont reliés les uns aux autres et à un initiateur pyrotechnique (non représenté) afin de provoquer la séparation et l'éjection du couvercle 3 en provoquant la rupture des amorces de rupture de la paroi du couvercle. L'initiateur est relié à un moyen de commande électronique (non représenté).The cover 3 constitutes with the base a monobloc housing but thinned portions 6, 7 and 8, constituting breaking primers, are provided in the thickness of this cover to ensure separation from the base 2. At these primers, holes 9, 10 and 11 respectively are provided in which a pyrotechnic composition (in the form of detonating cords) is inserted. These cords are quite conventional and are not part of the invention. All the cords are connected to each other and to a pyrotechnic initiator (not shown) to cause separation and ejection of the lid 3 by causing rupture of the rupture primers of the wall of the lid. The initiator is connected to an electronic control means (not shown).

Sur la figure, on voit que les deux extrémités de l'écran 4 sont constituées d'une part par le brin 13a qui est fixé à l'embase 2 par des boulons 14 et d'autre part par le brin 13b qui est fixé au couvercle 3. Le brin 13a est pincé entre l'embase 2 et deux languettes supports 20 et 23 qui portent des écrous soudés (ou des taraudages) - voir figure 3. Le brin 13b est pincé entre le couvercle 3 et une contre plaque métallique mince 29 (voir figure 4) par l'intermédiaire de boulons 15 (ou d'écrous soudés à la contre plaque 29). Ainsi, l'écran 4, à l'état replié et portant la contre-plaque 29, les languettes supports 20, 23 et les bras 16, 17 est introduit par exemple par une des parois latérales amovibles du boîtier 1. Les vis coopérant avec les écrous solidaires de la contre plaque et des supports sont ensuite fixées au travers de l'embase et du couvercle.In the figure, it can be seen that the two ends of the screen 4 consist on the one hand of the strand 13a which is fixed to the base 2 by bolts 14 and on the other hand by the strand 13b which is fixed to the cover 3. The strand 13a is clamped between the base 2 and two support tongues 20 and 23 which carry welded nuts (or tappings) - see figure 3 . The strand 13b is clamped between the cover 3 and a thin metal counterplate 29 (see figure 4 ) by means of bolts 15 (or nuts welded to the counterplate 29). Thus, the screen 4, in the folded state and carrying the counter-plate 29, the support tabs 20, 23 and the arms 16, 17 is introduced for example by one of the removable side walls of the housing 1. The screws cooperating with the nuts secured to the back plate and supports are then fixed through the base and the cover.

Sur la figure 2, on a représenté les deux bras articulés 16 et 17 permettant le maintien à distance de l'écran 4 par rapport à l'enceinte. Dans la configuration représentée, les deux bras sont maintenus en position repliée par l'écran 4, le déploiement de l'écran 4 s'effectuant dans le sens de la flèche F. Ces deux bras articulés sont chacun fixé sur un pivot 18 (ou 21) articulé par rapport à l'embase 2 au moyen d'un ressort 19 (ou 22) solidaire du support 20 (ou 23). Les supports 20, 23 sont fixés directement sur l'embase 2 et ils pincent le pli terminal 13a de l'écran 4. La longueur des bras 16 et 17 est prévue de telle façon qu'une distance suffisante (de l'ordre de 0,5 m) soit maintenue entre l'enceinte et l'écran après déploiement de ce dernier. C'est à cette distance qu'un projectile de type roquette se trouvera initié. Cette distance est supérieure à la distance optimale pour la perforation d'une charge creuse. L'efficacité du projectile incident sera donc réduite.On the figure 2 , there are shown the two articulated arms 16 and 17 for keeping the screen 4 away from the enclosure. In the configuration shown, the two arms are held in the folded position by the screen 4, the deployment of the screen 4 is effected in the direction of the arrow F. These two articulated arms are each fixed on a pivot 18 (or 21) articulated with respect to the base 2 by means of a spring 19 (or 22) integral with the support 20 (or 23). The supports 20, 23 are fixed directly on the base 2 and they pinch the end fold 13a of the screen 4. The length of the arms 16 and 17 is provided in such a way that a sufficient distance (of the order of 0 , 5 m) is maintained between the enclosure and the screen after deployment of the latter. It is at this distance that a projectile rocket will be initiated. This distance is greater than the optimum distance for the perforation of a hollow charge. The effectiveness of the incident projectile will be reduced.

La figure 3 illustre plus en détail la structure des bras 16 et 17. Chaque bras 16 (ou 17) est monté rotatif autour d'un pivot 18 (ou 21) solidaire du support 20 (ou 23) et est soumis à l'action d'un ressort 19 (ou 22) enroulé en spiral. Lorsque le bras 16 est ramené contre le support 20, c'est-à-dire lorsque l'écran 4 a été introduit dans le boîtier, le ressort 19 est alors mis en tension. Lors de l'éjection du couvercle 3 sous l'action des cordeaux de découpe, les bras 16 et 17 sont libérés et assurent grâce aux ressorts 19, 22 le déploiement de l'écran 4. Les ressorts 19 et 22 amènent ces bras dans une direction sensiblement perpendiculaire selon la flèche F'. Ce déploiement permet d'écarter l'écran de l'enceinte.The figure 3 illustrates in more detail the structure of the arms 16 and 17. Each arm 16 (or 17) is rotatably mounted about a pivot 18 (or 21) integral with the support 20 (or 23) and is subjected to the action of a spring 19 (or 22) wound spiral. When the arm 16 is brought against the support 20, that is to say when the screen 4 has been introduced into the housing, the spring 19 is then tensioned. During the ejection of the cover 3 under the action of the cutting cords, the arms 16 and 17 are released and ensure through the springs 19, 22 the deployment of the screen 4. The springs 19 and 22 bring these arms into a substantially perpendicular direction along the arrow F '. This deployment allows to remove the screen of the speaker.

La figure 4 représente une coupe au niveau du pivot d'un des bras 16 ou 17. Sur la figure, on a indiqué les éléments illustrés par la figure 1. On retrouve donc l'embase 2 munie d'une vis de fixation 5 pour la fixation du boîtier 1 sur l'enceinte à protéger, le couvercle 3 sur lequel l'écran 4 est fixé à l'aide des boulons 15 et les perçages 9, 10 et 11 recevant les cordeaux détonant. Au voisinage de ces perçages, on retrouve les amorces de rupture 6, 7 et 8 comme expliqué précédemment. La figure montre la disposition du pivot 18 solidaire du support 20 lui-même fixé sur l'autre brin terminal 13a de l'écran 4. Sur cette figure, on a également représenté des canaux 25 pratiqués sur une face interne d'une paroi latérale du boîtier et qui permettent de positionner les éléments de transmission pyrotechnique entre les différents cordeaux. L'initiateur pyrotechnique (non représenté) se positionnera sur la paroi latérale considérée.The figure 4 represents a section at the pivot point of one of the arms 16 or 17. In the figure, the elements illustrated by the figure 1 . There is therefore the base 2 provided with a fixing screw 5 for fixing the housing 1 on the enclosure to be protected, the cover 3 on which the screen 4 is fixed by means of the bolts 15 and the holes 9 , 10 and 11 receiving detonating cords. In the vicinity of these holes, we find the break primers 6, 7 and 8 as explained above. The figure shows the arrangement of the pivot 18 secured to the support 20 itself fixed on the other end strand 13a of the screen 4. In this figure, it is also possible to shown channels 25 made on an inner face of a side wall of the housing and which allow to position the pyrotechnic transmission elements between the different cords. The pyrotechnic initiator (not shown) will be positioned on the sidewall considered.

Sur la figure 5, on a représenté l'écran 4 déployé après fonctionnement des moyens pyrotechniques 9, 10, 11. L'écran 4 qui se présente sous la forme d'une surface continue est maintenu écarté de l'embase 2 fixée sur l'enceinte (non représentée) par les bras 16 et 17 qui se sont déployés comme expliqué précédemment. L'embase 2 reste solidaire de l'enceinte et le couvercle 3, constituant la partie détachable, a été séparé en restant attaché à l'écran 4. Ce couvercle 3 constitue alors un lest afin de réaliser un maintien convenable de l'écran devant l'enceinte tout en assurant une certaine tension.On the figure 5 , the screen 4 is shown deployed after operation of the pyrotechnic means 9, 10, 11. The screen 4 which is in the form of a continuous surface is kept away from the base 2 fixed to the enclosure (no represented) by arms 16 and 17 which have deployed as explained above. The base 2 remains secured to the enclosure and the cover 3, constituting the detachable part, has been separated by remaining attached to the screen 4. This cover 3 then constitutes a ballast to achieve a proper support of the screen in front of the speaker while ensuring a certain tension.

Comme expliqué précédemment, l'écran 4 permet de provoquer le déclenchement d'une roquette à charge creuse à une distance supérieure à sa distance de fonctionnement optimal, ce qui diminue son efficacité. L'écran permet aussi de déstabiliser un projectile de petit calibre ce qui permet de réduire son efficacité perforante.As explained above, the screen 4 makes it possible to cause the triggering of a hollow charge rocket at a distance greater than its optimal operating distance, which decreases its effectiveness. The screen can also destabilize a small caliber projectile which reduces its perforating efficiency.

Sur la figure 6, on a représenté un véhicule 26 équipé par exemple latéralement et à l'arrière d'un dispositif d'autoprotection selon l'invention. La figure montre deux écrans 4 déployés afin de protéger ce véhicule contre l'attaque d'un projectile. On voit que chaque écran 4 délimite une première partie 27 sensiblement plane liée au véhicule en raison du déploiement des bras 16 et 17 (non visibles sur la figure) et une autre partie 28 reliée au couvercle 3 constituant le lest afin de maintenir l'écran sensiblement plat. Ce type d'écran permet de réduire l'efficacité des projectiles et d'assurer la défense du véhicule contre ces projectiles.On the figure 6 there is shown a vehicle 26 equipped, for example, laterally and at the rear of a self-protection device according to the invention. The figure shows two screens 4 deployed to protect this vehicle against the attack of a projectile. It can be seen that each screen 4 delimits a first substantially plane portion 27 linked to the vehicle due to the deployment of the arms 16 and 17 (not visible in the figure) and another portion 28 connected to the lid 3 constituting the ballast in order to maintain the screen substantially flat. This type of screen reduces the effectiveness of projectiles and ensure the defense of the vehicle against these projectiles.

Bien entendu, le dispositif selon l'invention est actionné par des moyens de commande permettant de détecter l'approche d'un projectile et la mise à feu des moyens pyrotechniques permettant de déployer le ou les écrans de protection. Ces moyens sont connus de l'homme du métier et ne sont pas décrits. La détection peut se faire classiquement par un moyen radar engendrant un signal électrique de mise à feu des moyens pyrotechniques.Of course, the device according to the invention is actuated by control means making it possible to detect the approach of a projectile and the firing of the pyrotechnic means making it possible to deploy the screen or screens of protection. These means are known to those skilled in the art and are not described. The detection can be done conventionally by a radar means generating an electrical signal for firing the pyrotechnic means.

On a décrit ici un mode de réalisation dans lequel le lest assurant la mise en tension de l'écran 4 est constitué par le couvercle 3 lui-même. Il est bien entendu possible de prévoir un lest spécifique solidaire de l'extrémité de l'écran et un couvercle allégé qui ne sera plus solidaire de l'écran. Ce couvercle aura alors pour seule fonction de maintenir l'écran et les bras à l'état replié dans le boîtier.An embodiment has been described here in which the ballast ensuring the tensioning of the screen 4 is constituted by the cover 3 itself. It is of course possible to provide a specific ballast secured to the end of the screen and a lightened lid that will no longer be attached to the screen. This cover will then only serve to keep the screen and the arms in the folded state in the housing.

Claims (10)

Dispositif d'autoprotection d'une enceinte par déploiement d'un écran souple (4) en avant de l'enceinte, caractérisé en ce qu'il comprend un boîtier (1) renfermant l'écran souple et des moyens pour assurer le déploiement dudit écran (4), ledit boîtier présentant une partie fixe (2) solidaire de l'enceinte et une partie détachable (3), et en ce qu'il comporte des moyens (9, 10, 11) permettant de provoquer une découpe de la partie détachable (3) et d'assurer le déploiement dudit écran, ledit écran (4) étant relié à ses deux extrémités opposées d'une part à la partie fixe (2) et d'autre part à un lest (3).Device for self-protection of an enclosure by deployment of a flexible screen (4) in front of the enclosure, characterized in that it comprises a housing (1) enclosing the flexible screen and means for ensuring the deployment of said screen (4), said housing having a fixed part (2) integral with the enclosure and a detachable part (3), and in that it comprises means (9, 10, 11) making it possible to cut out the detachable part (3) and ensure the deployment of said screen, said screen (4) being connected at its two opposite ends on the one hand to the fixed part (2) and on the other hand to a ballast (3). Dispositif d'autoprotection d'une enceinte selon la revendication 1, caractérisé en ce que le boîtier (1) est constitué d'une embase (2) fixée à l'enceinte et d'un couvercle (3) constituant la partie détachable.Device for self-protection of an enclosure according to claim 1, characterized in that the housing (1) consists of a base (2) fixed to the enclosure and a cover (3) constituting the detachable part. Dispositif d'autoprotection d'une enceinte selon la revendication 1 ou 2, caractérisé en ce que la découpe du boîtier (1) est assurée par un moyen pyrotechnique (9, 10, 11).Self-protection device for an enclosure according to claim 1 or 2, characterized in that the housing (1) is cut by a pyrotechnic means (9, 10, 11). Dispositif d'autoprotection d'une enceinte selon l'une des revendications 1 à 3, caractérisé en ce qu'il comporte deux bras déployables (16, 17) fixés à une de leur extrémité à la partie fixe du boîtier (1) et appliqués contre l'écran (4) pour assurer, après déploiement de l'écran, le maintien de celui-ci à distance de l'enceinte.Device for self-protection of an enclosure according to one of claims 1 to 3, characterized in that it comprises two deployable arms (16, 17) fixed at one of their end to the fixed part of the housing (1) and applied against the screen (4) to ensure, after deployment of the screen, maintaining it away from the enclosure. Dispositif d'autoprotection d'une enceinte selon la revendication 4, caractérisé en ce que les deux bras sont maintenus en position repliée par l'écran (4).Self-protection device of an enclosure according to claim 4, characterized in that the two arms are held in the folded position by the screen (4). Dispositif d'autoprotection d'une enceinte selon la revendication 4 ou 5, caractérisé en ce que les deux bras (16, 17) sont soumis à l'action d'un ressort spiral (19, 22).Device for self-protection of an enclosure according to claim 4 or 5, characterized in that the two arms (16, 17) are subjected to the action of a spiral spring (19, 22). Dispositif d'autoprotection d'une enceinte selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie détachable (3) constitue le lest de l'écran (4).Device for self-protection of an enclosure according to any one of the preceding claims, characterized in that the detachable part (3) constitutes the weight of the screen (4). Dispositif d'autoprotection d'une enceinte selon l'une des revendications 3 à 7, caractérisé en ce que le moyen pyrotechnique est commandé électriquement à distance.Device for self-protection of an enclosure according to one of Claims 3 to 7, characterized in that the means pyrotechnic is electrically controlled remotely. Dispositif d'autoprotection d'une enceinte selon l'une quelconque des revendications précédentes, caractérisé en ce que l'écran souple (4) est constitué par un voile en Kevlar®/aramide.Tamper device of an enclosure according to any one of the preceding claims, characterized in that the flexible screen (4) is constituted by a veil Kevlar ® / aramid. Application du dispositif selon l'une quelconque des revendications précédentes à la protection d'un véhicule (20).Application of the device according to any one of the preceding claims to the protection of a vehicle (20).
EP08291061A 2007-11-28 2008-11-13 Vehicle self protection device Withdrawn EP2065669A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0708305A FR2924211B1 (en) 2007-11-28 2007-11-28 VEHICLE SELF-PROTECTION DEVICE

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011050906A1 (en) * 2009-10-30 2011-05-05 Rheinmetall Landsysteme Gmbh Protective system for vehicles and other objects

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GB2040029A (en) * 1979-01-12 1980-08-20 Bofors Ab Protective device for a combat vehicle gun barrel
DE3337115A1 (en) 1982-10-13 1988-02-11 Secr Defence Brit Ballistic protective cowl
WO2007089253A2 (en) * 2005-06-01 2007-08-09 Bae Systems Information And Electronic Systems Integration Inc. Method and apparatus for protecting vehicles and personnel against incoming projectiles
US20070180983A1 (en) 2006-02-09 2007-08-09 Farinella Michael D Vehicle protection system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2507351A1 (en) 1975-02-20 1976-09-09 Precitronic Protection against armour piercing projectiles - with high strength netting held at a distance from the vehicle
GB2040029A (en) * 1979-01-12 1980-08-20 Bofors Ab Protective device for a combat vehicle gun barrel
DE3337115A1 (en) 1982-10-13 1988-02-11 Secr Defence Brit Ballistic protective cowl
WO2007089253A2 (en) * 2005-06-01 2007-08-09 Bae Systems Information And Electronic Systems Integration Inc. Method and apparatus for protecting vehicles and personnel against incoming projectiles
US20070180983A1 (en) 2006-02-09 2007-08-09 Farinella Michael D Vehicle protection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011050906A1 (en) * 2009-10-30 2011-05-05 Rheinmetall Landsysteme Gmbh Protective system for vehicles and other objects

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FR2924211A1 (en) 2009-05-29
FR2924211B1 (en) 2009-12-25

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