EP1371935A1 - Vorrichtung und Munition für den Schutz eines Fahrzeuges oder einer Plattform gegen Drohungen - Google Patents

Vorrichtung und Munition für den Schutz eines Fahrzeuges oder einer Plattform gegen Drohungen 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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English (en)
French (fr)
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EP1371935B1 (de
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
Original Assignee
Giat Industries SA
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Publication date
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Application filed by Giat Industries SA filed Critical 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.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP03291311.3A 2002-06-12 2003-06-02 Vorrichtung und Munition für den Schutz eines Fahrzeuges oder einer Plattform gegen Drohungen Revoked EP1371935B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0207231 2002-06-12
FR0207231A FR2840977B1 (fr) 2002-06-12 2002-06-12 Dispositif et munition de protection d'un vehicule ou d'une plate-forme fixe contre une menace

Publications (2)

Publication Number Publication Date
EP1371935A1 true EP1371935A1 (de) 2003-12-17
EP1371935B1 EP1371935B1 (de) 2016-01-13

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EP03291311.3A Revoked EP1371935B1 (de) 2002-06-12 2003-06-02 Vorrichtung und Munition für den Schutz eines Fahrzeuges oder einer Plattform gegen Drohungen

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EP (1) EP1371935B1 (de)
FR (1) FR2840977B1 (de)

Cited By (1)

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WO2021001089A1 (de) 2019-07-02 2021-01-07 Rheinmetall Waffe Munition Gmbh Scheinziel, system und verfahren zum schützen eines objekts

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DE102007019105A1 (de) * 2007-04-23 2008-10-30 Langenhan, Thorsten Objektschutzsystem mit verringerter Kollateralschadensbelastung

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US3841219A (en) * 1964-08-12 1974-10-15 Gen Dynamics Corp Decoy rounds for counter measures system
US3671965A (en) * 1970-04-03 1972-06-20 Us Navy Rapid deployment corner reflector
DE3146166A1 (de) * 1981-11-21 1983-05-26 Rheinmetall GmbH, 4000 Düsseldorf Wurfkoerper
DE3513131A1 (de) * 1985-04-12 1986-10-23 Peter 5309 Meckenheim Bettermann Kampfmittel-abwehrmunition
EP0246368A1 (de) * 1986-03-27 1987-11-25 Chemring Limited Düppelabwurfvorrichtung
FR2669625A1 (fr) * 1990-11-22 1992-05-29 Giat Ind Sa Materiau de masquage efficace dans le domaine infra rouge.
US5835051A (en) * 1996-05-03 1998-11-10 Buck Werke Gmbh & Co. Method for offering a phantom target
FR2797044A1 (fr) * 1999-07-27 2001-02-02 Giat Ind Sa Procede de mise en place de fibres dans un etui et munition realisee avec ce procede

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021001089A1 (de) 2019-07-02 2021-01-07 Rheinmetall Waffe Munition Gmbh Scheinziel, system und verfahren zum schützen eines objekts
DE102019117801A1 (de) * 2019-07-02 2021-01-07 Rheinmetall Waffe Munition Gmbh Scheinziel, System und Verfahren zum Schützen eines Objekts

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

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