EP1371935A1 - Device and ammunition for the protection of a vehicle or platform against threats - Google Patents

Device and ammunition for the protection of a vehicle or platform against threats Download PDF

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Publication number
EP1371935A1
EP1371935A1 EP03291311A EP03291311A EP1371935A1 EP 1371935 A1 EP1371935 A1 EP 1371935A1 EP 03291311 A EP03291311 A EP 03291311A EP 03291311 A EP03291311 A EP 03291311A EP 1371935 A1 EP1371935 A1 EP 1371935A1
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EP
European Patent Office
Prior art keywords
masking
envelope
protective
ammunition
decoying
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.)
Granted
Application number
EP03291311A
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German (de)
French (fr)
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EP1371935B1 (en
Inventor
Muriel Regis
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 Munitions SA
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Giat Industries SA
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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
    • F41H13/00—Means of attack or defence not otherwise provided for
    • F41H13/0006—Ballistically deployed systems for restraining persons or animals, e.g. ballistically deployed 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
    • 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
    • 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
    • F42B12/70—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 for dispensing radar chaff or infrared material

Definitions

  • the technical field of the invention is that of devices to protect a vehicle or a fixed platform against a threat, such as a projectile having a target detection means.
  • Patent FR 2612287 thus describes a dispersing ammunition on the one hand a brass powder ensuring an almost instantaneous masking and on the other hand pots comprising a fumigene pyrotechnic composition which ensure a lasting masking.
  • the subject of the invention is a device for protection of a vehicle or a fixed platform against a threat, a device characterized in that it includes means ensuring the deployment of at least one means ensuring a masking of the vehicle or platform in the domain infrared and / or millimeter and at least one means ensuring lure of the threat in the field Millimeter.
  • the deployment means will be defined in such a way as to ensure the establishment of the means of deception between the masking cloud and the threat.
  • the masking means may comprise fibers of carbon.
  • the decoy may include at least one deployable reflector.
  • the invention also relates to an ammunition to implement such a device for protection.
  • the protective ammunition according to the invention implemented in such a protective device is characterized in that it includes an envelope containing at least one means masking in the infrared and / or millimetric range, at least one means providing a decoy in the field millimeter and at least one means of dispersion.
  • the means of masking and the decoy means are arranged axially one behind the other in the envelope.
  • the masking means and the means of deception are arranged longitudinally one next to the other on both sides of an axis of the envelope.
  • the protective ammunition may include a first dispersion means comprising a piston pushed by a means ejecting and pushing the decoy and masking means out of the envelope.
  • It may also include a second means of dispersion ensures the spacing of the masking means and the means of decoying once these ejected out of the envelope.
  • the second means of dispersal may include minus a spring interposed between the decoying means and the masking means.
  • the munition comprises a first envelope containing at least one means of masking in the infrared and / or millimetric domain and a second envelope enclosing at least one means ensuring a decoy in the millimetric domain, both envelopes being connected to one another by means of joining.
  • the second envelope can then have a section different from that of the first envelope.
  • the masking means may comprise a stack of minus two cakes of carbon fiber.
  • the masking means may comprise a powder metallic or organic.
  • the decoy may include at least one auto deployable reflector.
  • Figure la shows an armored vehicle 1 which is likely to be attacked by a threat 2, for example a missile.
  • the vehicle 1 is equipped with a device protection 3 according to the invention.
  • This device 3 includes a tube 4 ammunition launcher, which is arranged on a support 5.
  • the support 5 may be orientable in site and in deposit or have a fixed orientation with respect to vehicle.
  • Detection means 6 integral with the vehicle 1, to identify the approach of the missile 2. These means of detection will include for example a radar and / or a sensor optical, for example a laser radar.
  • Electronic control means (not shown) triggers the protection device in response to the detection of the threat 2 at a given distance from the vehicle.
  • the protective device includes means for the deployment of at least one means providing masking in the infra red domain and / or millimeter (such as a masking cloud 7) and at least one means of deception in the millimetric domain (such one or more deployable radar reflectors 8).
  • the means of deployment will preferably be constituted by one or more ammunition launched by the device of protection 3 and which will be designed in such a way that decoy means 8 is disposed between the masking cloud 7 and the threat 2.
  • Cloud 7 has the effect of preventing the detection of vehicle 1 by the missile sensors 2. At the same time the reflectors 8 are detected by the radar sensor of the missile 2 which is heading towards them and avoids the vehicle 1.
  • the skilled person will determine the number and dimensions radar reflectors 8 so as to give the group of reflectors 8 a radar equivalent surface similar to that vehicle 1 to protect.
  • masking cloud 7 and reflectors 8 provides a higher level of protection than would be brought by only one of the two means.
  • the device according to the invention adds to the masking effect ensured by the cloud a decoy effect which makes it possible to substitute for the radar image of the vehicle 1 a another radar image, close to that of the vehicle, but arranged away from this one.
  • masking and deception intervene almost simultaneously. Missile does not see the more the vehicle but sees the lures, so it's automatically attracted by these.
  • FR2797044 discloses a method making it possible to make wafers of such fibers and arrange them in an envelope. We can associate these fibers providing millimetric masking to materials infra-red masking, for example brass.
  • the patent FR2669625 describes a brass powder thus being able to be dispersed.
  • the protective device shown in FIGS. 1b includes a launcher that can be equipped with ammunition ensuring the simultaneous deployment of the means of masking and deception.
  • a protective device associating at least one first launcher 9 providing the deployment of the masking cloud and least a second launcher 10 ensuring the deployment of means of deception.
  • a protective device associating at least one first launcher 9 providing the deployment of the masking cloud and least a second launcher 10 ensuring the deployment of means of deception.
  • Each type of launcher will then receive an ammunition specific (masking or decoying).
  • the electronic control means will ensure in this case the trigger firing of the ammunition masking and decoy in order to ensure the deployment of the lures 8 between Masking Cloud 7 and the threat 2.
  • the protection device it is of course possible to implement the protection device according to the invention to protect, not not a vehicle, but a fixed structure (such as a building, an area or shelter).
  • FIG. 2 shows in section a munition 11 according to a first embodiment of the invention.
  • This ammunition is intended to be placed in the tube launcher 4 (such a tube is for example described in the patent FR-A-2765869).
  • the ammunition comprises a tubular envelope 12 at the rear part of which is a base 13 screwed on it and which carries a radial lug 14 allowing the fixing the ammunition by a bayonet fitting on a launcher not shown.
  • the base 13 carries an axial contact 15 electrically isolated from the base by an insulating cylinder 16.
  • the base encloses an ejection means which is a load Pyrotechnic Ejection 17 (a propellant powder by example) and an igniter 18 which is electrically connected, on the one hand in contact 15 and on the other hand in the metallic body of the base 13.
  • the envelope 12 contains a means of dispersion which is a piston 19 on which is applied a cylindrical case 20 which delimits a cylindrical housing divided into two compartments 23, 24 by a partition 21.
  • the case 20 is in the form of two half-shells 20a, 20b.
  • the envelope 12 is closed to its other end by a cover 22 connected thereto by a radial shear pin (not shown).
  • the front compartment 23 contains at least one means of masking 25 in the infrared and / or millimetric range.
  • the rear compartment 24 contains at least one means 26 providing decoy in the millimeter range.
  • the masking means 25 and the decoy means 26 are therefore find themselves axially arranged one behind the other in the envelope 12.
  • FIG. 4a shows a first embodiment variant masking means 25 (shown alone).
  • the front compartment 23 encloses a case 27, for example a cardboard tube or a sheath heat-shrinkable plastic material, within which is arranged a block 28 of metallic or organic powder (for example of aluminum, bronze or brass), and a stack of pancakes 29 of carbon fibers or fibers alluminized glass (here eight patties are represented). All the fibers of the pancakes are arranged parallel to the to each other and parallel to the axis of the ammunition (ie to the dispersion cane 30).
  • a case 27 for example a cardboard tube or a sheath heat-shrinkable plastic material, within which is arranged a block 28 of metallic or organic powder (for example of aluminum, bronze or brass), and a stack of pancakes 29 of carbon fibers or fibers alluminized glass (here eight patties are represented). All the fibers of the pancakes are arranged parallel to the to each other and parallel to the axis of the ammunition (ie to the dispersion cane 30).
  • the particle size of the particles will be chosen according to the wavelength to mask. Concretely the diameter median of the particles will be less than or equal to 25 micrometers. It will also be possible to use shaped particles of leaflets.
  • Each slab 29 has the thickness of the length of fibers, from 3mm to 6mm.
  • the method for achieving such patties is described in patent FR2797044.
  • the dispersion cane 30 is arranged axially and it crosses the fiber patties 29 and the block 28 of metallic or organic powder.
  • This cane is made for example in the form of a cardboard tube and it contains a pyrotechnic composition dispersion, for example a combination composition aluminum and potassium perchlorate.
  • the pyrotechnic composition of cane 30 is initiated by an igniter 31 (see Figure 2) which is for example secured to the partition 21 and which is electrically connected to the igniter 18.
  • the igniter will incorporate a composition pyrotechnic delay that will ensure the initiation of the cane After ejection of the masking means out of the envelope 12.
  • Such delay compositions are well known to the skilled person. We will size it to ensure a delay less than the second.
  • the rear compartment 24 contains a stack of lures 26 separated by washers 32 made of cardboard or plastic material preferably biodegradable. These washers avoid a snap between two lures 26 during assembly of the ammunition. We could alternatively place each lure 26 in a thin paper bag or plastic material that would be broken when fired.
  • lure 26 An example of lure 26 is shown in position deployed in Figure 5.
  • It comprises a reflector 50 made of a material flexible conductor of electricity (or wearing a coating driver) which is connected by a connecting means to a deployment system that includes two hoops 51, 52 substantially circular and articulated with each other.
  • the reflector 50 consists of eight interconnected trihedrons 53 by their summit.
  • a trihedron 53 is formed by three leaves cut into right triangles and welded together.
  • the sheets forming the trihedrons 53 are for example made in a polyethylene film coated on each side with a thin aluminum layer that makes it possible to make it conductive electricity. Any other flexible material that is conductive or not can be used. It will advantageously be possible to use a film of the family of polyethylenes tri-layer ie combining an aluminum layer between two layers of polyethylene. Such a film has the advantage of being heat-sealable.
  • the means ensuring the connection of the reflector 50 and the hoops 51,52 consists of six tabs 54 and six rings 56.
  • the length of these tabs is provided in such a way that some tension is exerted by the arches 51 and 52 on the vertices of the reflector 50. This ensures a maintenance of each trihedron in tension which makes it possible to minimize the structural defects and in particular flatness of the sheets forming each trihedron 53.
  • Tabs 54 may advantageously be made in the same material used to make the reflector. The tension ensured by the elastic tongues causes the deformation of the arches which is not detrimental to folding the lure.
  • the arches 51 and 52 are in the form of wires or metal tongues, for example made of steel spring. These hoops can be folded to their to store a potential elastic energy that will allow automatic deployment of the reflector.
  • the two arches 51 and 52 are joined together by two joints arranged at two points diametrically opposed. Each arch can rotate by relation to the other around a diametrical axis 58 materialized by the two joints. Pivoting is between a folded position in which the two arches 51 and 52 are are substantially in the same plane and a position deployed in which the two arches are in orthogonal plans.
  • the reflector 50 has six vertices. Two summits are linked to the joints, each of the other four summits is tied to a hoop at a middle portion thereof.
  • Figures 6a, 6b and 6c illustrate a method of folding a bow. For the clarity of the figure only one hoop 51 is shown with its rings 56 and the reflector 50 is not represented either.
  • the second hoop 52 which is articulated on the first hoop 51 substantially at the level of the rings 56 positioned on the axis 58, is folded before folding on the hoop 51 so as to be in the same plane as that this.
  • the flexibility of the reflector 50 allows such pivoting hoops.
  • the final diameter of the loops is significantly lower half that of the roll bar.
  • a hoop of initial diameter 36 cm presents a final diameter of the order 15 cm in folded position.
  • the flexibility of the material forming the reflector allows such folding.
  • the reflector 50 being made from a flexible material, it is totally compressible. The dimensions of the reflector 50, so the whole lure are chosen by the Man of the Occupation according to the radar equivalent surface to obtain.
  • the operation of the ammunition is as follows.
  • the means of control cause the initiation of the igniter 18 which initiates the ejection charge 17. At the same time the delay of the igniter 31 is initiated.
  • the pressure of the gases generated by the ejection charge 17 pushes the piston 19 which causes, via the case 20, the shear of the pins retaining the cover and the ejection of the latter.
  • the case 20 and its contents are thus ejected out of the envelope 12.
  • the two half-shells 20a, 20b of the holster are separate out of the envelope thus releasing the content.
  • the igniter 31 initiates the dispersion cane 30.
  • the radial effect of that This causes the simultaneous dispersion of the fibers of the pancakes 29 as well as metal powder 28. This results in a efficient masking cloud 7 both in the domain millimeter and in the infrared range.
  • the lures 26 are also dispersed and the shock resulting from the shooting causes their automatic deployment.
  • the ejection charge, the pyrotechnic initiation delay of the cane and the mass of the lures will be dimensioned by the Man of the Trade so as to ensure positioning of the lures 8 ahead of the masking cloud 7.
  • FIG. 4b thus shows a masking means constituted only conductive fiber wafers 29 (e.g. carbon fiber or aluminized glass fiber) dispersible by the explosive cane 30.
  • This masking means is only effective in the millimeter domain (fibers having a length of between 3 and 6 mm). A method of making such fiber wafers is described in the patent application FR2797044.
  • FIG. 4c shows a masking means constituted only a block 28 of metal powder, for example aluminum, bronze or brass dispersable by the cane explosive 30. This masking means is effective only in the infrared domain.
  • FIG. 3 shows a munition 11 according to a second mode embodiment of the invention.
  • This mode differs from the previous one in that the means of masking 25 is disposed in contact with the ejector piston 19 while the decoy is disposed in the neighborhood of the cover 22.
  • a pyrotechnic composition with a delay and the igniter 31 can be placed directly in a cavity of the piston 19 so as to be initiated by the ejection charge 17.
  • Figure 7 shows a third mode ammunition embodiment of the invention.
  • the ammunition 11 includes a first envelope 34 which contains the masking means 25 which may have a structure according to any one of Figures 4a to 4c.
  • Ammunition 11 also includes a second envelope 33 which contains the means of decoy millimeter, under the form of a stack of lures 26, folded and separated by washers 32, made of cardboard or plastic.
  • the two envelopes 33 and 34 are linked to each other by a securing means, which is here constituted by a threaded connection 38.
  • the end of the first envelope 34 carries a thread on which is screwed an arranged tapping on the second envelope 33.
  • a second piston 37 is disposed in the second envelope 33. It bears against an internal countersink of the second envelope and comes to apply against the end of the first envelope 34 when screwing the second envelope 33. It is found in particular in support against the end of the case 20.
  • the first envelope 34 is closed, before fixing the second envelope 33, by a shim 36 which is for example glued to the case 20.
  • the second envelope 33 has a section greater than that of the first envelope. It encloses a case 35 formed of two half-shells 35a and 35b. This case 35 is interposed between the second piston 37 and the cover 22.
  • the dispersion mode is thus identical to that of the ammunition according to Figure 3.
  • This embodiment has the advantage of allowing the introduction of lures larger diameter.
  • this embodiment allows, according to the operational requirements, to implement ammunition providing only a masking function (we will not use than the first envelope 34).
  • FIGS. 8a and 8b show a munition according to a fourth embodiment of the invention.
  • This embodiment differs from the previous ones in that the masking means 25 and the decoy means 26 are located longitudinally next to each other and on either side of an axis 39 of the envelope.
  • the envelope 12 has a rectangular section.
  • the inner case 20 is split in two half shells 20a and 20b and he too has a section rectangular.
  • the internal cavity delimited by the case 20 is shared longitudinally into two compartments 41,42 separated by a longitudinal partition 40.
  • the upper compartment 41 receives the masking means which may have a structure according to any of the Figures 4a to 4c.
  • a dispersion cane 30 crosses longitudinally compartment and it is initiated by an igniter 31 carried by the piston 19 and incorporating a pyrotechnic delay.
  • the lower compartment 42 contains the lures 26 separated by wedges 32.
  • compartment 32 Due to the prismatic shape of compartment 32, it is possible to have several stacks of lures 26 arranged next to each other. Following the example of Figures 8a, 8b, two stacks are shown separated by a hold 43.
  • the pressure of the gases of the ejection charge pushes the piston 19, which constitutes a first dispersing means, and ejects the lid 22 through the holster 20.
  • the masking means is ejected at the same time as the means of decoying out of the envelope 12.
  • the scattering cane is initiated with a less than one second (0.5 to 0.8 milliseconds per example) and ensures the dispersion of the powder and / or fibers and the creation of the masking cloud 7.
  • lures 26, ejected out of envelope 12 deploy automatically to ensure their function of deception.
  • Such ammunition is disposed on a launcher having a geometry and is oriented so that the partition 40 defines a plane perpendicular to a plane vertical.
  • the upper compartment containing the means of masking is then oriented towards the sky while the lower compartment containing the lures is located oriented on the ground side.
  • An advantage of this embodiment is that it allows a simultaneity of the deployment of the lures and the cloud.
  • lures are found dispersed quickly to the ground. They therefore ensure the attraction of the threat following a plunging trajectory which is more favorable to the protection of the vehicle or the structure.
  • This embodiment is more particularly adapted to roof protection vehicles, the cloud of powder masking which can be dispersed vertically upwards.
  • This spring will have the effect of removing the lures masking means right out of these out of the envelope 12. It may also provide another spring at the level of the partition 43. This will have the effect of facilitate the relative spacing of the lures and give them an additional impulse facilitating their deployment.

Abstract

The anti-missile mask for an armored fighting vehicle has a projector (3) for a deployable carbon fibre flexible shield (7) which interposes between an incoming heat seeking missile and the vehicle. The projector can also project decoys, such as flares (8) towards the path of the missile.

Description

Le domaine technique de l'invention est celui des dispositifs permettant d'assurer la protection d'un véhicule ou d'une plate-forme fixe contre une menace, telle un projectile doté d'un moyen de détection de cible.The technical field of the invention is that of devices to protect a vehicle or a fixed platform against a threat, such as a projectile having a target detection means.

Il est connu d'assurer une protection en mettant en oeuvre un nuage de masquage. Le brevet FR2612287 décrit ainsi une munition dispersant d'une part une poudre de laiton assurant un masquage quasi instantané et d'autre part des pots comprenant une composition pyrotechnique fumigène qui permettent d'assurer un masquage durable.It is known to provide protection by implementing a cloud of masking. Patent FR 2612287 thus describes a dispersing ammunition on the one hand a brass powder ensuring an almost instantaneous masking and on the other hand pots comprising a fumigene pyrotechnic composition which ensure a lasting masking.

Une telle protection est cependant insuffisante vis à vis des menaces qui utilisent un autodirecteur radar fonctionnant dans la bande millimétrique.Such protection is, however, insufficient with regard to threats that use a working radar seeker in the millimetric band.

Il est connu, par exemple par le brevet US4503101, de réaliser des leurres millimétriques déployables associant un réflecteur et un système de déploiement. Cependant de tels leurres sont de mise en oeuvre complexe et ils ne permettent pas d'assurer un niveau de protection suffisant.It is known, for example from US Pat. No. 4,503,101, to make deployable millimeter lures associating a reflector and a deployment system. However such decoys are complex implementation and they do not allow not to provide a sufficient level of protection.

En effet leur surface équivalente radar est trop éloignée de celle du véhicule ou de la plate-forme qu'ils doivent protéger. La menace voit toujours la cible et n'est pas détournée de celle ci par le leurre.Indeed their radar cross section is too much away from the vehicle or platform they are must protect. The threat always sees the target and is not diverted from this one by the lure.

C'est le but de l'invention que de proposer un dispositif permettant d'assurer une meilleure protection d'un véhicule ou d'une plate forme fixe.It is the object of the invention to provide a device to ensure better protection of a vehicle or a fixed platform.

Ainsi l'invention a pour objet un dispositif de protection d'un véhicule ou d'une plate-forme fixe contre une menace, dispositif caractérisé en ce qu'il comprend des moyens assurant le déploiement d'au moins un moyen assurant un masquage du véhicule ou de la plate-forme dans le domaine infra rouge et/ou millimétrique et d'au moins un moyen assurant un leurrage de la menace dans le domaine millimétrique.Thus, the subject of the invention is a device for protection of a vehicle or a fixed platform against a threat, a device characterized in that it includes means ensuring the deployment of at least one means ensuring a masking of the vehicle or platform in the domain infrared and / or millimeter and at least one means ensuring lure of the threat in the field Millimeter.

De façon préférée les moyens de déploiement seront définis de façon à assurer la mise en place du ou des moyens de leurrage entre le nuage de masquage et la menace. Preferably the deployment means will be defined in such a way as to ensure the establishment of the means of deception between the masking cloud and the threat.

Le moyen de masquage pourra comprendre des fibres de carbone.The masking means may comprise fibers of carbon.

Le moyen de leurrage pourra comprendre au moins un réflecteur déployable.The decoy may include at least one deployable reflector.

L'invention a également pour objet une munition permettant de mettre en oeuvre un tel dispositif de protection.The invention also relates to an ammunition to implement such a device for protection.

La munition de protection selon l'invention mise en oeuvre dans un tel dispositif de protection est caractérisée en ce qu'elle comprend une enveloppe renfermant au moins un moyen de masquage dans le domaine infra rouge et/ou millimétrique, au moins un moyen assurant un leurrage dans le domaine millimétrique et au moins un moyen de dispersion.The protective ammunition according to the invention implemented in such a protective device is characterized in that it includes an envelope containing at least one means masking in the infrared and / or millimetric range, at least one means providing a decoy in the field millimeter and at least one means of dispersion.

Selon un mode particulier de réalisation, le moyen de masquage et le moyen de leurrage se trouvent disposés axialement l'un derrière l'autre dans l'enveloppe.According to a particular embodiment, the means of masking and the decoy means are arranged axially one behind the other in the envelope.

Selon un autre mode de réalisation, le moyen de masquage et le moyen de leurrage se trouvent disposés longitudinalement l'un à côté de l'autre de part et d'autre d'un axe de l'enveloppe.According to another embodiment, the masking means and the means of deception are arranged longitudinally one next to the other on both sides of an axis of the envelope.

La munition de protection pourra comporter un premier moyen de dispersion comprenant un piston poussé par un moyen d'éjection et poussant les moyens de leurrage et de masquage hors de l'enveloppe.The protective ammunition may include a first dispersion means comprising a piston pushed by a means ejecting and pushing the decoy and masking means out of the envelope.

Elle pourra aussi comporter un deuxième moyen de dispersion assure l'écartement du moyen de masquage et du moyen de leurrage un fois ces derniers éjectés hors de l'enveloppe.It may also include a second means of dispersion ensures the spacing of the masking means and the means of decoying once these ejected out of the envelope.

Le deuxième moyen de dispersion pourra comprendre au moins un ressort interposé entre les moyens de leurrage et les moyens de masquage.The second means of dispersal may include minus a spring interposed between the decoying means and the masking means.

Selon un autre mode de réalisation, la munition comprend une première enveloppe renfermant au moins un moyen de masquage dans le domaine infra rouge et/ou millimétrique et une deuxième enveloppe renfermant au moins un moyen assurant un leurrage dans le domaine millimétrique, les deux enveloppes étant liées l'une à l'autre par un moyen de solidarisation.According to another embodiment, the munition comprises a first envelope containing at least one means of masking in the infrared and / or millimetric domain and a second envelope enclosing at least one means ensuring a decoy in the millimetric domain, both envelopes being connected to one another by means of joining.

La deuxième enveloppe pourra alors avoir une section différente de celle de la première enveloppe.The second envelope can then have a section different from that of the first envelope.

Le moyen de masquage pourra comprendre un empilement d'au moins deux galettes de fibre de carbone.The masking means may comprise a stack of minus two cakes of carbon fiber.

Le moyen de masquage pourra comprendre une poudre métallique ou organique.The masking means may comprise a powder metallic or organic.

Le moyen de leurrage pourra comprendre au moins un réflecteur auto déployable.The decoy may include at least one auto deployable reflector.

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

  • les figures 1a, 1b et 1c sont des schémas montrant la mise en oeuvre d'un dispositif selon l'invention,
  • la figure 2 est une vue en coupe longitudinale d'une munition selon un premier mode de réalisation de l'invention,
  • la figure 3 est une vue en coupe longitudinale d'une munition selon un deuxième mode de réalisation de l'invention,
  • les figures 4a, 4b et 4c montrent trois variantes de réalisation du moyen de masquage,
  • la figure 5 montre en perspective un mode de réalisation d'un leurre déployable,
  • les figures 6a, 6b et 6c montrent le mode de pliage d'un arceau d'un tel leurre déployable,
  • la figure 7 est une vue en coupe longitudinale d'une munition selon un troisième mode de réalisation de l'invention,
  • les figures 8a et 8b montrent une munition selon un quatrième mode de réalisation de l'invention, la figure 8b étant une coupe suivant le plan AA dont la trace est visible à la figure 8a,
The invention will be better understood on reading the following description of particular embodiments, a description given with reference to the accompanying drawings and in which:
  • FIGS. 1a, 1b and 1c are diagrams showing the implementation of a device according to the invention,
  • FIG. 2 is a view in longitudinal section of a munition according to a first embodiment of the invention,
  • FIG. 3 is a view in longitudinal section of a munition according to a second embodiment of the invention,
  • FIGS. 4a, 4b and 4c show three variant embodiments of the masking means,
  • FIG. 5 shows in perspective an embodiment of a deployable lure,
  • FIGS. 6a, 6b and 6c show the folding mode of a hoop of such a deployable lure,
  • FIG. 7 is a view in longitudinal section of a munition according to a third embodiment of the invention,
  • FIGS. 8a and 8b show a munition according to a fourth embodiment of the invention, FIG. 8b being a section along plane AA whose trace is visible in FIG. 8a,

La figure la montre un véhicule blindé 1 qui est susceptible d'être attaqué par une menace 2, par exemple un missile. Le véhicule 1 est équipé d'un dispositif de protection 3 selon l'invention. Ce dispositif 3 comprend un tube 4 lanceur de munition, qui est disposé sur un support 5.Figure la shows an armored vehicle 1 which is likely to be attacked by a threat 2, for example a missile. The vehicle 1 is equipped with a device protection 3 according to the invention. This device 3 includes a tube 4 ammunition launcher, which is arranged on a support 5.

Le support 5 pourra être orientable en site et en gisement ou avoir une orientation fixe par rapport au véhicule.The support 5 may be orientable in site and in deposit or have a fixed orientation with respect to vehicle.

Des moyens de détection 6, solidaires du véhicule 1, permettent de repérer l'approche du missile 2. Ces moyens de détection comprendront par exemple un radar et/ou un capteur optique, par exemple un radar laser.Detection means 6, integral with the vehicle 1, to identify the approach of the missile 2. These means of detection will include for example a radar and / or a sensor optical, for example a laser radar.

Un moyen de commande électronique (non représenté) déclenche le dispositif de protection en réponse à la détection de la menace 2 à une distance donnée du véhicule.Electronic control means (not shown) triggers the protection device in response to the detection of the threat 2 at a given distance from the vehicle.

Conformément à l'invention, le dispositif de protection comprend des moyens assurant le déploiement d'au moins un moyen assurant un masquage dans le domaine infra rouge et/ou millimétrique (tel un nuage de masquage 7) et d'au moins un moyen assurant un leurrage dans le domaine millimétrique (tel un ou plusieurs réflecteurs radar déployables 8).According to the invention, the protective device includes means for the deployment of at least one means providing masking in the infra red domain and / or millimeter (such as a masking cloud 7) and at least one means of deception in the millimetric domain (such one or more deployable radar reflectors 8).

Les moyens de déploiement seront de préférence constitués par une ou plusieurs munitions lancées par le dispositif de protection 3 et qui seront conçues de telle sorte que le moyen de leurrage 8 soit disposé entre le nuage de masquage 7 et la menace 2.The means of deployment will preferably be constituted by one or more ammunition launched by the device of protection 3 and which will be designed in such a way that decoy means 8 is disposed between the masking cloud 7 and the threat 2.

Le nuage 7 a pour effet d'empêcher la détection du véhicule 1 par les senseurs du missile 2. Dans le même temps les réflecteurs 8 sont détectés par le senseur radar du missile 2 qui se dirige vers ces derniers et évite le véhicule 1.Cloud 7 has the effect of preventing the detection of vehicle 1 by the missile sensors 2. At the same time the reflectors 8 are detected by the radar sensor of the missile 2 which is heading towards them and avoids the vehicle 1.

L'Homme du Métier déterminera le nombre et les dimensions des réflecteurs radar 8 de façon donner au groupe des réflecteurs 8 une surface équivalente radar analogue à celle du véhicule 1 à protéger.The skilled person will determine the number and dimensions radar reflectors 8 so as to give the group of reflectors 8 a radar equivalent surface similar to that vehicle 1 to protect.

Il dimensionnera aussi les moyens de déploiement afin qu'ils assurent le positionnement des moyens de leurrage 8 entre le nuage 7 et le missile 2. Il suffit pour cela de prévoir des moyens de dispersion des leurres 8 qui assurent une trajectoire balistique telle que les leurres soient déployés au-delà du nuage de masquage 7.It will also size deployment means so that they ensure the positioning of the means of deception 8 between the cloud 7 and the missile 2. It suffices for that to provide means for dispersing the lures 8 which ensure a ballistic trajectory such that lures are deployed beyond the masking cloud 7.

La combinaison du nuage de masquage 7 et des réflecteurs 8 assure un niveau de protection supérieur à celui qui serait apporté par un seul des deux moyens.The combination of masking cloud 7 and reflectors 8 provides a higher level of protection than would be brought by only one of the two means.

En effet, le dispositif selon l'invention ajoute à l'effet de masquage assuré par le nuage un effet de leurrage qui permet de substituer à l'image radar du véhicule 1 une autre image radar, proche de celle du véhicule, mais disposée à distance de celui ci. De plus, masquage et leurrage interviennent de façon quasi simultanée. Le missile ne voit plus le véhicule mais voit les leurres, il est donc automatiquement attiré par ces derniers.Indeed, the device according to the invention adds to the masking effect ensured by the cloud a decoy effect which makes it possible to substitute for the radar image of the vehicle 1 a another radar image, close to that of the vehicle, but arranged away from this one. In addition, masking and deception intervene almost simultaneously. Missile does not see the more the vehicle but sees the lures, so it's automatically attracted by these.

Du point de vue des moyens de masquage, on mettra en oeuvre des moyens assurant un masquage Infra rouge et/ou millimétrique. On pourra par exemple disperser des fibres conductrices (par exemple de carbone ou des fibres de verré alluminisées) dont la longueur sera choisie de l'ordre du millimètre (de 3 à 6 mm) pour assurer un masquage millimétrique. Le brevet FR2797044 décrit un procédé permettant de réaliser des galettes de telles fibres et de les disposer dans une enveloppe. On pourra associer ces fibres assurant un masquage millimétrique à des matériaux assurant un masquage infra rouge, par exemple une poudre de laiton. Le brevet FR2669625 décrit une poudre de laiton pouvant ainsi être dispersée.From the point of view of the means of masking, we will put in means for infra-red masking and / or Millimeter. For example, it will be possible to disperse fibers conductive (for example carbon or glass fibers alluminized) whose length will be chosen from the order of millimeter (from 3 to 6 mm) to ensure masking Millimeter. FR2797044 discloses a method making it possible to make wafers of such fibers and arrange them in an envelope. We can associate these fibers providing millimetric masking to materials infra-red masking, for example brass. The patent FR2669625 describes a brass powder thus being able to be dispersed.

Du point de vue des moyens de leurrage on pourra disperser des leurres déployables tels que décrit par les brevets US4503101 ou GB2187892 ou par la demande de brevet FR02/00783 déposée le 21/01/2002.From the point of view of the means of deception we can disperse deployable lures as described by the patents US4503101 or GB2187892 or by the patent application FR02 / 00783 filed on 21/01/2002.

Le dispositif de protection représenté aux figures la et 1b comprend un lanceur qui pourra être équipé de munitions particulières assurant le déploiement simultané des moyens de masquage et de leurrage. The protective device shown in FIGS. 1b includes a launcher that can be equipped with ammunition ensuring the simultaneous deployment of the means of masking and deception.

Différents modes de réalisation de telles munitions seront décrits en référence aux figures 2 à 6.Different embodiments of such ammunition will be described with reference to Figures 2 to 6.

A titre de variante et tel que représenté sur la figure 1c il est possible de disposer sur le véhicule 1 un dispositif de protection associant au moins un premier lanceur 9 assurant le déploiement du nuage de masquage et au moins un deuxième lanceur 10 assurant le déploiement des moyens de leurrage. On pourrait alternativement utiliser comme un des lanceurs le canon 44 du véhicule.As a variant and as shown in FIG. 1c it is possible to have on the vehicle 1 a protective device associating at least one first launcher 9 providing the deployment of the masking cloud and least a second launcher 10 ensuring the deployment of means of deception. We could alternatively use as one of the launchers the barrel 44 of the vehicle.

Chaque type de lanceur recevra alors une munition spécifique (masquage ou leurrage).Each type of launcher will then receive an ammunition specific (masking or decoying).

Le moyen de commande électronique assurera dans ce cas le déclenchement du tir des munitions de masquage et de leurrage de façon à assurer le déploiement des leurres 8 entre le nuage de masquage 7 et la menace 2.The electronic control means will ensure in this case the trigger firing of the ammunition masking and decoy in order to ensure the deployment of the lures 8 between Masking Cloud 7 and the threat 2.

Il est bien entendu possible de mettre en oeuvre le dispositif de protection selon l'invention pour protéger, non pas un véhicule, mais une structure fixe (tel un bâtiment, une zone ou un abri).It is of course possible to implement the protection device according to the invention to protect, not not a vehicle, but a fixed structure (such as a building, an area or shelter).

La figure 2 montre en coupe une munition 11 selon un premier mode de réalisation de l'invention.FIG. 2 shows in section a munition 11 according to a first embodiment of the invention.

Cette munition est destinée venir se placer dans le tube lanceur 4 (un tel tube est par exemple décrit dans le brevet FR-A-2765869).This ammunition is intended to be placed in the tube launcher 4 (such a tube is for example described in the patent FR-A-2765869).

La munition comprend une enveloppe 12 tubulaire à la partie arrière de laquelle se trouve une embase 13 vissée sur celle-ci et qui porte un ergot radial 14 permettant la fixation de la munition par un montage à baïonnette sur un lanceur non représenté. L'embase 13 porte un contact 15 axial isolé électriquement de l'embase par un cylindre isolant 16.The ammunition comprises a tubular envelope 12 at the rear part of which is a base 13 screwed on it and which carries a radial lug 14 allowing the fixing the ammunition by a bayonet fitting on a launcher not shown. The base 13 carries an axial contact 15 electrically isolated from the base by an insulating cylinder 16.

L'embase renferme un moyen d'éjection qui est une charge pyrotechnique d'éjection 17 (une poudre propulsive par exemple) et un allumeur 18 qui est relié électriquement, d'une part au contact 15 et d'autre part au corps métallique de l'embase 13. L'enveloppe 12 renferme un moyen de dispersion qui est un piston 19 sur lequel est appliqué un étui cylindrique 20 qui délimite un logement cylindrique partagé en deux compartiments 23, 24 par une cloison 21.The base encloses an ejection means which is a load Pyrotechnic Ejection 17 (a propellant powder by example) and an igniter 18 which is electrically connected, on the one hand in contact 15 and on the other hand in the metallic body of the base 13. The envelope 12 contains a means of dispersion which is a piston 19 on which is applied a cylindrical case 20 which delimits a cylindrical housing divided into two compartments 23, 24 by a partition 21.

L'étui 20 se présente sous la forme de deux demi-coquilles 20a,20b. L'enveloppe 12 est fermée à son autre extrémité par un couvercle 22 relié à celle-ci par une goupille radiale cisaillable (non représentée).The case 20 is in the form of two half-shells 20a, 20b. The envelope 12 is closed to its other end by a cover 22 connected thereto by a radial shear pin (not shown).

Le compartiment avant 23 renferme au moins un moyen de masquage 25 dans le domaine infra rouge et/ou millimétrique.The front compartment 23 contains at least one means of masking 25 in the infrared and / or millimetric range.

Le compartiment arrière 24 renferme au moins un moyen 26 assurant un leurrage dans le domaine millimétrique.The rear compartment 24 contains at least one means 26 providing decoy in the millimeter range.

Le moyen de masquage 25 et le moyen de leurrage 26 se trouvent donc disposés axialement l'un derrière l'autre dans l'enveloppe 12.The masking means 25 and the decoy means 26 are therefore find themselves axially arranged one behind the other in the envelope 12.

La figure 4a montre une première variante de réalisation du moyen de masquage 25 (représenté seul).FIG. 4a shows a first embodiment variant masking means 25 (shown alone).

Selon cette variante, le compartiment avant 23 renferme un étui 27, par exemple un tube en carton ou une gaine en matière plastique thermorétractable, à l'intérieur duquel est disposé un bloc 28 de poudre métallique ou organique (par exemple d'aluminium, de bronze ou de laiton), et un empilement de galettes 29 de fibres de carbone ou de fibres de verre alluminisées (ici huit galettes sont représentées). Toutes les fibres des galettes sont rangées parallèlement les unes aux autres et parallèlement à l'axe de la munition (c'est à dire à la cane de dispersion 30).According to this variant, the front compartment 23 encloses a case 27, for example a cardboard tube or a sheath heat-shrinkable plastic material, within which is arranged a block 28 of metallic or organic powder (for example of aluminum, bronze or brass), and a stack of pancakes 29 of carbon fibers or fibers alluminized glass (here eight patties are represented). All the fibers of the pancakes are arranged parallel to the to each other and parallel to the axis of the ammunition (ie to the dispersion cane 30).

La granulométrie des particules sera choisie en fonction de la longueur d'onde à masquer. Concrètement le diamètre médian des particules sera inférieur ou égal à 25 micromètres. On pourra aussi utiliser des particules en forme de feuillets.The particle size of the particles will be chosen according to the wavelength to mask. Concretely the diameter median of the particles will be less than or equal to 25 micrometers. It will also be possible to use shaped particles of leaflets.

Chaque galette 29 a pour épaisseur la longueur des fibres, soit de 3mm à 6mm. Le procédé permettant de réaliser de telles galettes est décrit dans le brevet FR2797044.Each slab 29 has the thickness of the length of fibers, from 3mm to 6mm. The method for achieving such patties is described in patent FR2797044.

La cane de dispersion 30 est disposée axialement et elle traverse les galettes de fibres 29 ainsi que le bloc 28 de poudre métallique ou organique. The dispersion cane 30 is arranged axially and it crosses the fiber patties 29 and the block 28 of metallic or organic powder.

Cette cane est réalisée par exemple sous la forme d'un tube de carton et elle renferme une composition pyrotechnique de dispersion, par exemple une composition associant aluminium et perchlorate de potassium.This cane is made for example in the form of a cardboard tube and it contains a pyrotechnic composition dispersion, for example a combination composition aluminum and potassium perchlorate.

La composition pyrotechnique de la cane 30 est initiée par un inflammateur 31 (voir figure 2) qui est par exemple solidaire de la cloison 21 et qui est relié électriquement à l'allumeur 18. L'inflammateur incorporera une composition pyrotechnique à retard qui assurera l'initiation de la cane 30 après éjection du moyen de masquage hors de l'enveloppe 12.The pyrotechnic composition of cane 30 is initiated by an igniter 31 (see Figure 2) which is for example secured to the partition 21 and which is electrically connected to the igniter 18. The igniter will incorporate a composition pyrotechnic delay that will ensure the initiation of the cane After ejection of the masking means out of the envelope 12.

De telles compositions à retard sont bien connues de l'Homme du Métier. On la dimensionnera de façon à assurer un retard inférieur à la seconde.Such delay compositions are well known to the skilled person. We will size it to ensure a delay less than the second.

Le compartiment arrière 24 renferme un empilement de leurres 26 séparés par des rondelles 32 en carton ou en matière plastique de préférence biodégradable. Ces rondelles permettent d'éviter un accrochage entre deux leurres 26 lors du montage de la munition. On pourrait à titre de variante placer chaque leurre 26 dans un sachet en papier mince ou en matière plastique qui serait rompu lors du tir.The rear compartment 24 contains a stack of lures 26 separated by washers 32 made of cardboard or plastic material preferably biodegradable. These washers avoid a snap between two lures 26 during assembly of the ammunition. We could alternatively place each lure 26 in a thin paper bag or plastic material that would be broken when fired.

Un exemple de leurre 26 est représenté en position déployée à la figure 5.An example of lure 26 is shown in position deployed in Figure 5.

Il comprend un réflecteur 50 réalisé en un matériau souple conducteur de l'électricité (ou portant un revêtement conducteur) qui est relié par un moyen de liaison à un système de déploiement qui comprend deux arceaux 51, 52 sensiblement circulaires et articulés entre eux.It comprises a reflector 50 made of a material flexible conductor of electricity (or wearing a coating driver) which is connected by a connecting means to a deployment system that includes two hoops 51, 52 substantially circular and articulated with each other.

Le réflecteur 50 est constitué de huit trièdres 53 reliés par leur sommet. Un trièdre 53 est formé par trois feuilles découpées en triangles rectangles et soudées entre elles. Les feuilles formant les trièdres 53 sont par exemple réalisée en un film polyéthylène revêtu de chaque côté avec une fine couche d'aluminium qui permet de le rendre conducteur de l'électricité. Tout autre matériau souple conducteur ou non peut être utilisé. On pourra avantageusement utiliser un film de la famille des polyéthylènes tri-couche c'est à dire associant une couche d'aluminium entre deux couches de polyéthylène. Un tel film présente l'avantage d'être thermosoudable.The reflector 50 consists of eight interconnected trihedrons 53 by their summit. A trihedron 53 is formed by three leaves cut into right triangles and welded together. The sheets forming the trihedrons 53 are for example made in a polyethylene film coated on each side with a thin aluminum layer that makes it possible to make it conductive electricity. Any other flexible material that is conductive or not can be used. It will advantageously be possible to use a film of the family of polyethylenes tri-layer ie combining an aluminum layer between two layers of polyethylene. Such a film has the advantage of being heat-sealable.

Le moyen assurant la liaison du réflecteur 50 et des arceaux 51,52 est constitué par six languettes 54 et six anneaux 56.The means ensuring the connection of the reflector 50 and the hoops 51,52 consists of six tabs 54 and six rings 56.

La longueur de ces languettes est prévue de telle façon qu'une certaine tension soit exercée par les arceaux 51 et 52 sur les sommets du réflecteur 50. On assure ainsi un maintien de chaque trièdre en tension ce qui permet de minimiser les défauts de structure et notamment de planéités des feuilles formant chaque trièdre 53.The length of these tabs is provided in such a way that some tension is exerted by the arches 51 and 52 on the vertices of the reflector 50. This ensures a maintenance of each trihedron in tension which makes it possible to minimize the structural defects and in particular flatness of the sheets forming each trihedron 53.

Les languettes 54 pourront avantageusement être réalisées dans le même matériau que celui utilisé pour fabriquer le réflecteur. La tension assurée par les languettes élastiques entraíne la déformation des arceaux ce qui n'est pas préjudiciable au pliage du leurre.Tabs 54 may advantageously be made in the same material used to make the reflector. The tension ensured by the elastic tongues causes the deformation of the arches which is not detrimental to folding the lure.

Les arceaux 51 et 52 se présentent sous la forme de fils ou languettes métalliques, par exemple réalisés en acier à ressort. Ces arceaux pourront être pliés de façon à leur faire emmagasiner une énergie potentielle élastique qui permettra un déploiement automatique du réflecteur.The arches 51 and 52 are in the form of wires or metal tongues, for example made of steel spring. These hoops can be folded to their to store a potential elastic energy that will allow automatic deployment of the reflector.

Les deux arceaux 51 et 52 sont réunis entre eux par deux articulations disposées au niveau de deux points diamétralement opposés. Chaque arceau peut donc pivoter par rapport à l'autre autour d'un axe diamétral 58 matérialisé par les deux articulations. Le pivotement se fait entre une position repliée dans laquelle les deux arceaux 51 et 52 se trouvent sensiblement dans le même plan et une position déployée dans laquelle les deux arceaux se trouvent dans des plans orthogonaux.The two arches 51 and 52 are joined together by two joints arranged at two points diametrically opposed. Each arch can rotate by relation to the other around a diametrical axis 58 materialized by the two joints. Pivoting is between a folded position in which the two arches 51 and 52 are are substantially in the same plane and a position deployed in which the two arches are in orthogonal plans.

Une telle disposition permet de replier le réflecteur.Such an arrangement makes it possible to fold the reflector.

Le réflecteur 50 comporte six sommets. Deux sommets sont liés aux articulations, chacun des quatre autres sommets est lié à un arceau au niveau d'une partie médiane de celui ci. The reflector 50 has six vertices. Two summits are linked to the joints, each of the other four summits is tied to a hoop at a middle portion thereof.

Sur les figures 6a, 6b et 6c on a illustré une méthode de pliage d'un arceau. Pour la clarté de la figure un seul arceau 51 est représenté avec ses anneaux 56 et le réflecteur 50 n'est pas non plus représenté.Figures 6a, 6b and 6c illustrate a method of folding a bow. For the clarity of the figure only one hoop 51 is shown with its rings 56 and the reflector 50 is not represented either.

Concrètement le deuxième arceau 52, qui est articulé sur le premier arceau 51 sensiblement au niveau des anneaux 56 positionnés sur l'axe 58, est rabattu avant pliage sur l'arceau 51 de façon à se trouver dans le même plan que celui ci. La souplesse du réflecteur 50 autorise un tel pivotement des arceaux.Concretely the second hoop 52, which is articulated on the first hoop 51 substantially at the level of the rings 56 positioned on the axis 58, is folded before folding on the hoop 51 so as to be in the same plane as that this. The flexibility of the reflector 50 allows such pivoting hoops.

Le mouvement de pliage qui va être décrit ci dessous s'applique donc simultanément aux deux arceaux qui se situent dans le même plan et dont les formes circulaires sont pratiquement superposées.The folding movement that will be described below therefore applies simultaneously to the two arches which are in the same plane and whose circular shapes are practically superimposed.

On commence lors d'une première phases (figure 6a) par tordre suivant la flèche F1 manuellement les deux arceaux autour de l'axe délimité par le segment AB, A étant le point auquel la torsion est appliquée et B le point fixe. On obtient alors deux boucles comme représenté sur la figure 6b.We begin in a first phase (Figure 6a) by twist along the arrow F1 manually the two arches around the axis delimited by segment AB, where A is the point to which the twist is applied and B the fixed point. We then obtains two loops as shown in Figure 6b.

Puis au cours d'une deuxième phase (figure 6b) on effectue une seconde torsion de sens inverse autour du point B (flèche F2), le point A restant fixe, tout en rapprochant les points A et B l'un de l'autre (flèches F3, F4). Pour cette deuxième phase on pourrait alternativement (mais moins commodément) poursuivre le mouvement de torsion du point A d'un autre demi tour, le point B restant fixe.Then in a second phase (Figure 6b) we makes a second twist in the opposite direction around the point B (arrow F2), the point A remaining fixed while bringing together points A and B from each other (arrows F3, F4). For this second phase one could alternatively (but less conveniently) continue the twisting motion of point A another half turn, the point B remaining fixed.

Après une torsion d'un demi-tour autour de chaque point A et B, et comme suite à l'élasticité du matériau des arceaux, on obtient une boucle supplémentaire qui s'introduit dans les autres boucles comme représenté sur la figure 6c.After a twist of a half turn around each point A and B, and as a result of the elasticity of the material of the hoops, we obtain an additional loop which is introduced in the other loops as shown in Figure 6c.

Le diamètre final des boucles est sensiblement inférieur de moitié à celui de l'arceau déployé. Ainsi, un arceau de diamètre initial 36 cm présente un diamètre final de l'ordre de 15 cm en position repliée. La souplesse du matériau formant le réflecteur autorise un tel pliage.The final diameter of the loops is significantly lower half that of the roll bar. Thus, a hoop of initial diameter 36 cm presents a final diameter of the order 15 cm in folded position. The flexibility of the material forming the reflector allows such folding.

L'équilibre des arceaux 51 et 52 ainsi repliés est instable et un simple choc suffit à entraíner leur déploiement donc celui du réflecteur 50.The balance of the hoops 51 and 52 thus folded is unstable and a simple shock is enough to lead to their deployment therefore that of the reflector 50.

Une fois le leurre replié, on obtient une galette dont l'épaisseur est environ celle des arceaux soit 3 mm par exemple pour un diamètre de l'ordre de 150 mm. Le réflecteur 50 étant réalisé à partir d'un matériau souple, il est totalement compressible. Les dimensions du réflecteur 50, donc de l'ensemble du leurre sont choisies par l'Homme du Métier en fonction de la surface équivalente radar à obtenir.Once the lure folded, we obtain a cake of which the thickness is approximately that of the arches is 3 mm per example for a diameter of the order of 150 mm. The reflector 50 being made from a flexible material, it is totally compressible. The dimensions of the reflector 50, so the whole lure are chosen by the Man of the Occupation according to the radar equivalent surface to obtain.

Un tel leurre est décrit en détail dans la demande de brevet FR02/00783 déposée le 21/01/2002.Such a lure is described in detail in the application for patent FR02 / 00783 filed on 21/01/2002.

On pourrait alternativement utiliser d'autres réflecteurs déployables tels que ceux décrits par les brevets US4503101, EP148635, FR2717951 ou GB2187892.We could alternatively use other reflectors deployable such as those described by patents US4503101, EP148635, FR2717951 or GB2187892.

Le fonctionnement de la munition est le suivant.The operation of the ammunition is as follows.

Lorsque les moyens de détection portés par le véhicule ou la plate forme détectent l'approche d'une menace, les moyens de commande provoquent l'initiation de l'allumeur 18 qui initie la charge d'éjection 17. Dans le même temps le retard de l'inflammateur 31 est initié.When the detection means carried by the vehicle or the platform detect the approach of a threat, the means of control cause the initiation of the igniter 18 which initiates the ejection charge 17. At the same time the delay of the igniter 31 is initiated.

La pression des gaz engendrés par la charge d'éjection 17 pousse le piston 19 qui provoque, par l'intermédiaire de l'étui 20, le cisaillement des goupilles retenant le couvercle et l'éjection de ce dernier.The pressure of the gases generated by the ejection charge 17 pushes the piston 19 which causes, via the case 20, the shear of the pins retaining the cover and the ejection of the latter.

L'étui 20 et son contenu se trouve donc éjecté hors de l'enveloppe 12. Les deux demi coquilles 20a, 20b de l'étui se séparent à l'extérieur de l'enveloppe libérant ainsi le contenu.The case 20 and its contents are thus ejected out of the envelope 12. The two half-shells 20a, 20b of the holster are separate out of the envelope thus releasing the content.

A l'issue du retard pyrotechnique prévu, l'inflammateur 31 initie la cane de dispersion 30. L'effet radial de celle ci provoque la dispersion simultanée des fibres des galettes 29 ainsi que de la poudre métallique 28. Il en résulte un nuage de masquage 7 efficace à la fois dans le domaine millimétrique et dans le domaine infrarouge.At the end of the expected pyrotechnic delay, the igniter 31 initiates the dispersion cane 30. The radial effect of that This causes the simultaneous dispersion of the fibers of the pancakes 29 as well as metal powder 28. This results in a efficient masking cloud 7 both in the domain millimeter and in the infrared range.

Les leurres 26 sont également dispersés et le choc résultant du tir provoque leur déploiement automatique. La charge d'éjection, le retard pyrotechnique d'initiation de la cane et la masse des leurres seront dimensionnés par l'Homme du Métier de façon à assurer un positionnement des leurres 8 en avant du nuage de masquage 7. A titre de variante il est bien entendu possible de donner une structure différente au moyen de masquage 25.The lures 26 are also dispersed and the shock resulting from the shooting causes their automatic deployment. The ejection charge, the pyrotechnic initiation delay of the cane and the mass of the lures will be dimensioned by the Man of the Trade so as to ensure positioning of the lures 8 ahead of the masking cloud 7. As a variant it is of course possible to give a different structure to the masking means 25.

La figure 4b montre ainsi un moyen de masquage constitué uniquement de galettes de fibres conductrices 29 (par exemple de fibres de carbone ou de fibres de verre aluminisées) dispersable par la cane explosive 30. Ce moyen de masquage est efficace uniquement dans le domaine millimétrique (fibres ayant une longueur comprise entre 3 et 6 mm) . Un procédé de réalisation de telles galettes de fibres est décrit dans la demande de brevet FR2797044.FIG. 4b thus shows a masking means constituted only conductive fiber wafers 29 (e.g. carbon fiber or aluminized glass fiber) dispersible by the explosive cane 30. This masking means is only effective in the millimeter domain (fibers having a length of between 3 and 6 mm). A method of making such fiber wafers is described in the patent application FR2797044.

La figure 4c montre un moyen de masquage constitué uniquement d'un bloc 28 de poudre métallique, par exemple d'aluminium, de bronze ou de laiton dispersable par la cane explosive 30. Ce moyen de masquage est efficace uniquement dans le domaine infrarouge.FIG. 4c shows a masking means constituted only a block 28 of metal powder, for example aluminum, bronze or brass dispersable by the cane explosive 30. This masking means is effective only in the infrared domain.

La figure 3 montre une munition 11 selon un deuxième mode de réalisation de l'invention.FIG. 3 shows a munition 11 according to a second mode embodiment of the invention.

Ce mode diffère du précédent en ce que le moyen de masquage 25 est disposé au contact du piston d'éjection 19 tandis que le moyen de leurrage est disposé au voisinage du couvercle 22.This mode differs from the previous one in that the means of masking 25 is disposed in contact with the ejector piston 19 while the decoy is disposed in the neighborhood of the cover 22.

Une telle disposition permet d'assurer de façon certaine le positionnement des leurres 8 en avant du nuage 7 et cela quel que soit le nombre de leurres et la masse de poudre et/ou de galettes de fibres mise en oeuvreSuch a provision makes it possible to ensure with certainty the positioning of the lures 8 in front of the cloud 7 and this whatever the number of decoys and the mass of powder and / or fiber patties implemented

Il permet également de faciliter l'initiation de la cane de dispersion 30. Une composition pyrotechnique à retard et l'inflammateur 31 pouvant être mis en placé directement dans une cavité du piston 19 de façon à pouvoir être initiés par la charge d'éjection 17.It also helps to facilitate the initiation of the cane 30. A pyrotechnic composition with a delay and the igniter 31 can be placed directly in a cavity of the piston 19 so as to be initiated by the ejection charge 17.

La figure 7 montre une munition selon un troisième mode de réalisation de l'invention. Figure 7 shows a third mode ammunition embodiment of the invention.

Suivant ce mode, la munition 11 comprend une première enveloppe 34 qui renferme le moyen de masquage 25 qui pourra avoir une structure selon l'une quelconque des figures 4a à 4c. La munition 11 comprend également une deuxième enveloppe 33 qui renferme les moyens de leurrage millimétrique, sous la forme d'un empilement de leurres 26, repliés et séparés par des rondelles 32, en carton ou en matière plastique.According to this mode, the ammunition 11 includes a first envelope 34 which contains the masking means 25 which may have a structure according to any one of Figures 4a to 4c. Ammunition 11 also includes a second envelope 33 which contains the means of decoy millimeter, under the form of a stack of lures 26, folded and separated by washers 32, made of cardboard or plastic.

Les deux enveloppes 33 et 34 sont liées l'une à l'autre par un moyen de solidarisation, qui est ici constitué par une liaison filetée 38. L'extrémité de la première enveloppe 34 porte un filetage sur lequel se visse un taraudage aménagé sur la deuxième enveloppe 33.The two envelopes 33 and 34 are linked to each other by a securing means, which is here constituted by a threaded connection 38. The end of the first envelope 34 carries a thread on which is screwed an arranged tapping on the second envelope 33.

Un deuxième piston 37 est disposé dans la deuxième enveloppe 33. Il est en appui contre un lamage interne de la deuxième enveloppe et vient s'appliquer contre l'extrémité de la première enveloppe 34 lors du vissage de la deuxième enveloppe 33. Il se trouve notamment en appui contre l'extrémité de l'étui 20.A second piston 37 is disposed in the second envelope 33. It bears against an internal countersink of the second envelope and comes to apply against the end of the first envelope 34 when screwing the second envelope 33. It is found in particular in support against the end of the case 20.

La première enveloppe 34 est obturée, avant fixation de la deuxième enveloppe 33, par une cale 36 qui est par exemple collée à l'étui 20.The first envelope 34 is closed, before fixing the second envelope 33, by a shim 36 which is for example glued to the case 20.

La deuxième enveloppe 33 a une section supérieure à celle de la première enveloppe. Elle renferme un étui 35 formé de deux demi coquilles 35a et 35b. Cet étui 35 est interposé entre le deuxième piston 37 et le couvercle 22.The second envelope 33 has a section greater than that of the first envelope. It encloses a case 35 formed of two half-shells 35a and 35b. This case 35 is interposed between the second piston 37 and the cover 22.

Lors de l'initiation de l'allumeur 18, la pression des gaz de la charge d'éjection 17 pousse le piston 19. Celui ci exerce sa poussée sur le deuxième piston 37 par l'intermédiaire de l'étui 20. Le deuxième piston 37 pousse le couvercle 22 par l'intermédiaire du deuxième étui 35, provoquant ainsi le cisaillement des goupilles de maintien.When initiating the igniter 18, the pressure of the gas from the ejection charge 17 pushes the piston 19. This one exerts its thrust on the second piston 37 by through the case 20. The second piston 37 pushes the cover 22 through the second case 35, thus causing shearing of the retaining pins.

Le mode de dispersion est ainsi identique à celui de la munition selon la figure 3.The dispersion mode is thus identical to that of the ammunition according to Figure 3.

Ce mode de réalisation présente pour avantage d'autoriser la mise en place de leurres de diamètre plus important. This embodiment has the advantage of allowing the introduction of lures larger diameter.

Le moyen de solidarisation des deux enveloppes 33 et 34 étant démontable, ce mode de réalisation permet, selon les besoins opérationnels, de mettre en oeuvre des munitions n'assurant qu'une fonction de masquage (on n'utilisera alors que la première enveloppe 34).The means of securing the two envelopes 33 and 34 being removable, this embodiment allows, according to the operational requirements, to implement ammunition providing only a masking function (we will not use than the first envelope 34).

On pourra en cas de besoin, et éventuellement directement sur le terrain, visser la deuxième enveloppe 33 à la première enveloppe,34 pour réaliser des munitions assurant masquage et leurrage.We can, if necessary, and possibly directly in the field, screw the second envelope 33 to the first envelope, 34 to make ammunition ensuring masking and decoy.

Les figures 8a et 8b montrent une munition selon un quatrième mode de réalisation de l'invention.FIGS. 8a and 8b show a munition according to a fourth embodiment of the invention.

Ce mode de réalisation diffère des précédents en ce que le moyen de masquage 25 et les moyens de leurrage 26 se trouvent disposés longitudinalement l'un à côté de l'autre et de part et d'autre d'un axe 39 de l'enveloppe.This embodiment differs from the previous ones in that the masking means 25 and the decoy means 26 are located longitudinally next to each other and on either side of an axis 39 of the envelope.

Selon ce mode de réalisation, l'enveloppe 12 a une section rectangulaire. L'étui interne 20 est partagé en deux demi coquilles 20a et 20b et il a lui aussi une section rectangulaire.According to this embodiment, the envelope 12 has a rectangular section. The inner case 20 is split in two half shells 20a and 20b and he too has a section rectangular.

La cavité interne délimitée par l'étui 20 est partagée longitudinalement en deux compartiments 41,42 séparés par une cloison longitudinale 40.The internal cavity delimited by the case 20 is shared longitudinally into two compartments 41,42 separated by a longitudinal partition 40.

Le compartiment supérieur 41 reçoit le moyen de masquage qui pourra avoir une structure selon l'une quelconque des figures 4a à 4c.The upper compartment 41 receives the masking means which may have a structure according to any of the Figures 4a to 4c.

Une cane de dispersion 30 traverse longitudinalement ce compartiment et elle est initiée par un inflammateur 31 porté par le piston 19 et incorporant un retard pyrotechnique.A dispersion cane 30 crosses longitudinally compartment and it is initiated by an igniter 31 carried by the piston 19 and incorporating a pyrotechnic delay.

Le compartiment inférieur 42 renferme les leurres 26 séparés par des cales 32.The lower compartment 42 contains the lures 26 separated by wedges 32.

Du fait de la forme prismatique du compartiment 32, il est possible de disposer plusieurs empilements de leurres 26 disposés les uns à côté des autres. Suivant l'exemple des figures 8a, 8b, deux empilements sont représentés séparés par une cale 43. Due to the prismatic shape of compartment 32, it is possible to have several stacks of lures 26 arranged next to each other. Following the example of Figures 8a, 8b, two stacks are shown separated by a hold 43.

Le mode de fonctionnement de cette munition est le suivant.The mode of operation of this ammunition is the next.

Comme dans les modes précédents la pression des gaz de la charge d'éjection pousse le piston 19, qui constitue un premier moyen de dispersion, et qui éjecte le couvercle 22 par l'intermédiaire de l'étui 20. Le moyen de masquage est éjecté en même temps que les moyens de leurrage hors de l'enveloppe 12. La cane de dispersion est initiée avec un retard inférieur à la seconde (de 0,5 à 0,8 millisecondes par exemple) et assure la dispersion de la poudre et/ou des fibres et la création du nuage de masquage 7.As in the previous modes the pressure of the gases of the ejection charge pushes the piston 19, which constitutes a first dispersing means, and ejects the lid 22 through the holster 20. The masking means is ejected at the same time as the means of decoying out of the envelope 12. The scattering cane is initiated with a less than one second (0.5 to 0.8 milliseconds per example) and ensures the dispersion of the powder and / or fibers and the creation of the masking cloud 7.

Dans le même temps les leurres 26, éjectés hors de l'enveloppe 12, se déploient automatiquement pour assurer leur fonction de leurrage.At the same time the lures 26, ejected out of envelope 12, deploy automatically to ensure their function of deception.

Une telle munition est disposée sur un lanceur ayant une géométrie adaptée et elle est orientée de telle sorte que la cloison 40 définisse un plan perpendiculaire à un plan vertical. Le compartiment supérieur renfermant le moyen de masquage se trouve alors orienté du côté du ciel tandis que le compartiment inférieur renfermant les leurres se trouve orienté du côté du sol.Such ammunition is disposed on a launcher having a geometry and is oriented so that the partition 40 defines a plane perpendicular to a plane vertical. The upper compartment containing the means of masking is then oriented towards the sky while the lower compartment containing the lures is located oriented on the ground side.

Un avantage de ce mode de réalisation est qu'il autorise une simultanéité du déploiement des leurres et du nuage.An advantage of this embodiment is that it allows a simultaneity of the deployment of the lures and the cloud.

Un autre avantage est que les leurres se trouvent dispersés rapidement vers le sol. Ils assurent donc l'attraction de la menace suivant une trajectoire plongeante qui est plus favorable à la protection du véhicule ou de la structure.Another advantage is that the lures are found dispersed quickly to the ground. They therefore ensure the attraction of the threat following a plunging trajectory which is more favorable to the protection of the vehicle or the structure.

Ce mode de réalisation est plus particulièrement adapté à une protection du toit des véhicules, le nuage de poudre de masquage pouvant être dispersé verticalement vers le haut.This embodiment is more particularly adapted to roof protection vehicles, the cloud of powder masking which can be dispersed vertically upwards.

Suivant une variante de réalisation on pourra prévoir un deuxième moyen de dispersion qui assure un écartement rapide du moyen de masquage et du moyen de leurrage une fois ces derniers éjectés hors de l'enveloppe 12. According to an alternative embodiment, it will be possible to provide a second dispersing means which ensures a fast spacing the masking means and the decoy means once these last ejected out of the envelope 12.

On pourra par exemple prévoir au moins un ressort disposé au niveau de la cloison 40, donc interposé entre les moyens de leurrage et les moyens de masquage.For example, it will be possible to provide at least one spring arranged at the level of the partition 40, therefore interposed between the means decoy and masking means.

Ce ressort aura pour effet d'écarter les leurres des moyens de masquage dès la sortie de ces derniers hors de l'enveloppe 12. On pourra également prévoir un autre ressort au niveau de la cloison 43. Celui ci aura pour effet de faciliter l'écartement relatif des leurres et leur donnera une impulsion supplémentaire facilitant leur déploiement.This spring will have the effect of removing the lures masking means right out of these out of the envelope 12. It may also provide another spring at the level of the partition 43. This will have the effect of facilitate the relative spacing of the lures and give them an additional impulse facilitating their deployment.

Claims (15)

Dispositif de protection (3) d'un véhicule ou d'une plate-forme fixe contre une menace (2), caractérisé en ce qu'il comprend des moyens assurant le déploiement d'au moins un moyen permettant la formation d'un nuage (7) assurant un masquage du véhicule ou de la plate-forme dans le domaine infra rouge et/ou millimétrique et d'au moins un moyen (8) assurant un leurrage de la menace dans le domaine millimétrique.Protective device (3) for a vehicle or a fixed platform against a threat (2), characterized in that it comprises means ensuring the deployment of at least one means for forming a cloud (7) providing masking of the vehicle or the platform in the infra-red and / or millimetric range and at least one means (8) providing a decoy of the threat in the millimeter range. Dispositif de protection selon la revendication 1, caractérisé en ce que les moyens de déploiement assurent la mise en place du ou des moyens de leurrage (8) entre le nuage de masquage (7) et la menace (2).Protective device according to claim 1, characterized in that the deployment means ensure the establishment of or decoy means (8) between the masking cloud (7) and the threat (2). Dispositif de protection selon une des revendications 1 ou 2, caractérisé en ce que le moyen de masquage comprend des fibres de carbone.Protective device according to one of claims 1 or 2, characterized in that the masking means comprises carbon fibers. Dispositif de protection selon une des revendications 1 à 3, caractérisé en ce que le moyen de leurrage comprend au moins un réflecteur déployable (8).Protective device according to one of claims 1 to 3, characterized in that the decoy means comprises at least one deployable reflector (8). Munition (11) de protection mise en oeuvre dans un dispositif de protection selon une des revendications précédentes, munition caractérisée en ce qu'elle comprend une enveloppe (12) renfermant au moins un moyen de masquage (25) dans le domaine infra rouge et/ou millimétrique, au moins un moyen (26) assurant un leurrage dans le domaine millimétrique et au moins un moyen de dispersion (19).Protective ammunition (11) implemented in a protection device according to one of the preceding claims, characterized in that it comprises an envelope (12) enclosing at least one masking means (25) in the infra-red domain and / or millimeter, at least one means (26) decoying in the millimeter range and at least one dispersing means (19). Munition de protection selon la revendication 5, caractérisée en ce que le moyen de masquage (25) et le moyen de leurrage (26) se trouvent disposés axialement l'un derrière l'autre dans l'enveloppe (12).Protective ammunition according to claim 5, characterized in that the masking means (25) and the decoying means (26) are arranged axially one behind the other in the casing (12). Munition de protection selon la revendication 5, caractérisée en ce que le moyen de masquage (25) et le moyen de leurrage (26) se trouvent disposés longitudinalement l'un à côté de l'autre de part et d'autre d'un axe (39) de l'enveloppe (12). Protective ammunition according to claim 5, characterized in that the masking means (25) and the decoying means (26) are arranged longitudinally next to one another on either side of an axis. (39) of the envelope (12). Munition de protection selon une des revendications 6 ou 7, caractérisée en ce qu'elle comprend un premier moyen de dispersion comprenant un piston (19) poussé par un moyen d'éjection (17) et poussant les moyens de leurrage (26) et de masquage (25) hors de l'enveloppe (12).Protective ammunition according to one of claims 6 or 7, characterized in that it comprises a first dispersing means comprising a piston (19) pushed by an ejection means (17) and pushing the decoying means (26) and masking (25) out of the envelope (12). Munition de protection selon la revendication 8, caractérisée en ce qu'elle comprend un deuxième moyen de dispersion assurant l'écartement du moyen de masquage (25) et du moyen de leurrage (26) un fois ces derniers éjectés hors de l'enveloppe (12).Protective ammunition according to claim 8, characterized in that it comprises a second dispersing means ensuring the spacing of the masking means (25) and the decoying means (26) once these ejected out of the envelope ( 12). Munition de protection selon la revendication 9, caractérisée en ce que le deuxième moyen de dispersion comprend au moins un ressort interposé entre les moyens de leurrage (26) et les moyens de masquage (25).Protective ammunition according to claim 9, characterized in that the second dispersing means comprises at least one spring interposed between the decoying means (26) and the masking means (25). Munition de protection mise en oeuvre dans un dispositif de protection selon une des revendications 1 à 4, munition caractérisée en ce qu'elle comprend une première enveloppe (34) renfermant au moins un moyen de masquage (25) dans le domaine infra rouge et/ou millimétrique et une deuxième enveloppe (33) renfermant au moins un moyen (26) assurant un leurrage dans le domaine millimétrique, les deux enveloppes étant liées l'une à l'autre par un moyen de solidarisation (38).Protective ammunition implemented in a protection device according to one of Claims 1 to 4, ammunition characterized in that it comprises a first envelope (34) enclosing at least one masking means (25) in the infra red domain and / or millimeter and a second casing (33) enclosing at least one means (26) decoying in the millimeter range, the two casings being connected to each other by a securing means (38). Munition de protection selon la revendication 11, caractérisée en ce que la deuxième enveloppe (33) a une section différente de celle de la première enveloppe (34).Protective ammunition according to claim 11, characterized in that the second envelope (33) has a section different from that of the first envelope (34). Munition de protection selon une des revendications 5 à 12, caractérisée en ce que le moyen de masquage (25) comprend un empilement d'au moins deux galettes (29) de fibre de carbone.Protective ammunition according to one of claims 5 to 12, characterized in that the masking means (25) comprises a stack of at least two slabs (29) of carbon fiber. Munition de protection selon une des revendications 5 à 13, caractérisée en ce que le moyen de masquage (25) comprend une poudre (28) métallique ou organique.Protective ammunition according to one of Claims 5 to 13, characterized in that the masking means (25) comprises a metallic or organic powder (28). Munition de protection selon une des revendications 5 à 14, caractérisée en ce que le moyen de leurrage (26) comprend au moins un réflecteur (50) auto déployable.Protective ammunition according to one of Claims 5 to 14, characterized in that the decoying means (26) comprises at least one self-expanding reflector (50).
EP03291311.3A 2002-06-12 2003-06-02 Device and ammunition for the protection of a vehicle or platform against threats Revoked EP1371935B1 (en)

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FR0207231A FR2840977B1 (en) 2002-06-12 2002-06-12 DEVICE AND MUNITION FOR PROTECTING A VEHICLE OR A FIXED PLATFORM AGAINST A THREAT
FR0207231 2002-06-12

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FR2669625A1 (en) * 1990-11-22 1992-05-29 Giat Ind Sa EFFECTIVE MASKING MATERIAL IN THE INFRA RED DOMAIN.
US5835051A (en) * 1996-05-03 1998-11-10 Buck Werke Gmbh & Co. Method for offering a phantom target
FR2797044A1 (en) * 1999-07-27 2001-02-02 Giat Ind Sa PROCESS FOR PLACING FIBERS IN A CASE AND AMMUNITION CARRIED OUT WITH THIS PROCESS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019117801A1 (en) * 2019-07-02 2021-01-07 Rheinmetall Waffe Munition Gmbh Decoy, system and method for protecting an object
WO2021001089A1 (en) 2019-07-02 2021-01-07 Rheinmetall Waffe Munition Gmbh Decoy target, system and method for protecting an object

Also Published As

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FR2840977B1 (en) 2004-09-03
FR2840977A1 (en) 2003-12-19
EP1371935B1 (en) 2016-01-13

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