EP1521053B1 - Anti-Bunker Munition - Google Patents

Anti-Bunker Munition Download PDF

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Publication number
EP1521053B1
EP1521053B1 EP04292219A EP04292219A EP1521053B1 EP 1521053 B1 EP1521053 B1 EP 1521053B1 EP 04292219 A EP04292219 A EP 04292219A EP 04292219 A EP04292219 A EP 04292219A EP 1521053 B1 EP1521053 B1 EP 1521053B1
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EP
European Patent Office
Prior art keywords
munition
bunker
sub
ammunition
ammunition according
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.)
Active
Application number
EP04292219A
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English (en)
French (fr)
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EP1521053A1 (de
Inventor
Nicolas Eches
Dominique Bouchaud
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.)
Giat Industries SA
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Giat Industries SA
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Publication date
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Publication of EP1521053A1 publication Critical patent/EP1521053A1/de
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Publication of EP1521053B1 publication Critical patent/EP1521053B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile

Definitions

  • the technical field of the invention is that of ammunition allowing the destruction of highly protected targets by a wall for example of concrete.
  • the volume available for the explosive is reduced and the efficiency of the shrapnel can be reduced due to the overfragmentation of the envelope.
  • these munitions comprise a steel casing with high mechanical characteristics which is intended to generate splinters. It is not possible to define in a reliable and reproducible manner the radius of effectiveness of this flash load which is thus deformed after crossing a wall.
  • the anti-bunker munition according to the invention makes it possible to control the effectiveness of the flash charge regardless of the thickness of the wall traversed.
  • the subject of the invention is an anti-bunker munition comprising a penetration body delimiting an internal cavity closed by a base, an ammunition characterized in that the cavity contains at least one submunition, an ejection device of the said sub-munition. ammunition as well as a device ejection of the base, the sub-ammunition (s) and the ejection devices being isolated from at least one of the walls of the internal cavity by a damping material.
  • the sub-ammunition or sub-munitions comprise an explosive charge disposed in a shell-generating envelope.
  • the explosive charge of the sub-ammunition (s) may comprise two initiation devices, each device being disposed at one end of the fragment-generating envelope, the joint initiation of the two devices ensuring a focus of the fragments. .
  • the sub-munition may comprise an incendiary and / or blast thermal load or a thermobaric charge.
  • the damping means may comprise at least two blocks.
  • the munition according to the invention may comprise a control means connected to a fuse ensuring the detection of the crossing of a wall, control means ensuring in sequence first initiation of the device for ejection of the base and that of the device ejection of the sub-munitions.
  • the initiation of the ejection device of the sub-ammunition (s) will advantageously be controlled after crossing the wall.
  • the penetration body may comprise a front tip comprising at least one bar crimped in at least one bore.
  • the penetration body may be integral with a thruster.
  • the penetration body may be integral with a guide module / steering.
  • the anti-bunker munition according to the invention may thus constitute a bomb or an air-to-surface missile.
  • an anti-bunker ammunition 1 according to one embodiment of the invention comprises a perforating military head before 1a which is here secured to a rear part 1b comprising a propellant module 2 and an electronic guidance module / piloting 4.
  • the propellant module 2 is not shown here in detail. It contains conventionally a propellant charge (not shown) which generates gases, ejected towards the rear of the munition 1 by a nozzle 3.
  • the electronic guidance / control module 4 is also not shown in detail. It is connected to four rear control surfaces 5 arranged in a cross.
  • the ammunition 1 thus constitutes a missile or an air / ground bomb with a piloting capability towards a target.
  • the propulsion module 2 makes it possible to give the projectile a desired minimum speed at impact on a target, a speed that makes it possible to perforate the target. This module can therefore be initiated only a few tens of meters before the impact. For a concrete target with a thickness greater than one meter, an impact velocity greater than or equal to 300 m / s will be sought.
  • the propulsion module 2 could include a cruise propulsion stage that would ensure the desired range for the missile.
  • the cruise booster can itself ensure the desired impact speed or it can be coupled to a perforation thruster providing the desired minimum speed for impact.
  • the propellant modules 2 and guide / control 4 are not the subject of the present invention and will therefore not be described in more detail later.
  • the munition 1 comprises a piercing military head 1a which comprises a penetration body 6 having a massive front tip 6a and which is extended by a rear cylindrical portion 6b delimiting an internal cavity 7 closed by a base 8.
  • the internal cavity 7 encloses a submunition 31 and an ejection device 9 of the said submunition 31.
  • This ejection device 9 comprises an initiator 10 and a pyrotechnic charge generating gas 11.
  • a piston 12 is also interposed between the submunition 31 and the pyrotechnic charge 11.
  • the internal cavity 7 also encloses a device 13 for ejecting the base 8.
  • This device 13 also comprises an initiator 14 and a pyrotechnic charge generating gas 15.
  • the two initiators 15 and 10 are connected by wire links 16 to a control means 17 which is located disposed inside the internal cavity 7, between the front tip 6a and the device 9 for ejection of the sub-munition.
  • This control means is itself connected to a rocket 18 which is designed to be able to ensure the detection of the crossing of a wall.
  • rockets are well known to those skilled in the art. For example, reference may be made to US Pat. No. 5,255,608, which describes such a rocket.
  • control means 17 and the rocket 18 may constitute a single electronic circuit comprising a microprocessor programmed appropriately.
  • the submunition 31 and the ejection devices 9 and 13 are isolated from the walls of the internal cavity 7 by damping means 19. Thus the submunition 31 and the ejection devices 9, 13 are not disturbed by the impact on the target of the penetration body 6.
  • the damping means 19 will for example consist of an elastomeric material such as RTV 630. This material will for example be put into place by casting inside the internal cavity 7 and before setting up the submunition 31 and the devices. ejection 9 and 13. Proper equipment will provide during casting the free volume necessary for the subsequent introduction of the submunition and ejection devices.
  • damping material will adhere to the walls of the penetration body 6 without being adherent to the submunition 31 which can therefore be ejected without difficulty.
  • FIG. 5a shows the arrival of the ammunition 1 at impact on a concrete target 20 whose thickness E is greater than one meter and which covers an internal cavity 21.
  • the impact velocity V of the penetration body 6 is greater than or equal to 300 m / s. This speed results, depending on the case, either from the inertia of the fall (unpulsed bomb) or from the thrust of a thruster (propelled bomb or missile).
  • Figure 5b shows the first moments following the impact of the ammunition 1 on the target 20.
  • control means 17 first causes the initiation of the ejection device 13 of the base 8.
  • This ejection of the base can also ensure the ejection of the rear part 1b of the ammunition (not shown here).
  • the submunition 31 is isolated from the mechanical stresses to which the penetration body 6 has been subjected thanks to the damping material 19.
  • FIG. 5c shows the target 20 carrying a hole 22 formed by the penetration body 6 passing through.
  • the fuse 18 detects the entry into the cavity 21 and initiates via the control means 17 the device 9 ensuring the ejection of the submunition 31.
  • the control means 17 also ensures the initiation of the submunition 31 at the end of a preprogrammed time interval corresponding to the time required to eject the sub-munition 31 out of the body 6.
  • the submunition 31, undeformed by the crossing of the target 20, can then exert its action inside the cavity 21.
  • Figure 2 shows in more detail an embodiment of a perforating military head.
  • the sub-munition 31 is a fragment-generating sub-munition which comprises an explosive charge 22 disposed in a fragment-generating envelope 23.
  • Shatter-generating envelopes are well known to those skilled in the art.
  • patents FR 2 807 156, US Pat. No. 5,445,589 and EP 918,206 describe such envelopes.
  • the envelope 23 is here a cylindrical envelope closed at each end by a cover 24.
  • Each lid carries an initiation device 25 which advantageously incorporate a pyrotechnic delay ensuring an initiation of the explosive charge 22 after ejection of the sub-munition out of the body 6.
  • the initiation devices 25 are both connected to the control means 17. Thus, each device being disposed at a different end of the envelope 23, the joint initiation of the two devices ensures a focus of the chips in a median plane substantially perpendicular to the axis of the cylindrical envelope 23.
  • the front tip 6a of the penetration body 6 is made integrally of a material with high mechanical characteristics, that is to say a material whose elastic limit is greater than or equal to 1200 Mega Pascals.
  • a material with high mechanical characteristics that is to say a material whose elastic limit is greater than or equal to 1200 Mega Pascals.
  • 35NCD16 steel may be used.
  • the cylindrical part 6b does not have to protect the explosive charge 22 of the submunition which is isolated from the shock by the damping material 19.
  • the cylindrical portion 6b can therefore have a reduced thickness (of the order of 6 to 8 mm).
  • the effectiveness of the chips generated inside the target is that of the submunition 31.
  • Figures 3a, 3b and 3c show another embodiment of a piercing head 1a according to the invention.
  • This mode differs from the previous one by the structure of the front tip 6a which comprises here bars 26a, 26b, 26c crimped into bores formed in the body of the tip 6a.
  • Each bar 26a, 26b, 26c is cylindrical and the axis of its bore is parallel to the axis 27 of the piercing head 1a.
  • the bars 26a and 26b are thus distributed in two concentric rings surrounding the axis 27 of the penetration body.
  • a bar 26c also occupying a bore coaxial to the head 1a (see also Figure 3b).
  • first ring or middle ring comprising eight bars 26b regularly distributed around the axis 27 and a second ring or outer ring comprising sixteen bars 26a regularly distributed about the axis 27.
  • the diameters of the peripheral bars 26a are here lower than those of the middle bars 26b.
  • the diameters of the different bars may be identical or different for reasons of organization of the penetration body. The goal is to obtain the highest overall density for the piercing head.
  • the diameters of the bars may be between 10 mm and 30 mm.
  • the ends of the various bars are machined so that they are flush with the outer profile ogivé of the front tip 6a (see Figures 3a and 3c).
  • the bars 26 do not disturb the aerodynamics of the munition.
  • the bars are made of a dense material with high mechanical characteristics.
  • a material with a density greater than or equal to 17 and having a yield strength greater than or equal to 1000 mega pascals will be chosen.
  • the body of the head 6a is made of steel.
  • This embodiment makes it possible to easily obtain a front tip 6a having a high density. It is indeed easier to make dense bars of reduced diameter (of the order of 10 to 30 mm) than to achieve a large diameter front tip (greater than 150 mm) of such a sintered material.
  • a sintered tungsten perforating head body 6 comprising a solid front portion connected to a thin rear portion delimiting a cavity.
  • This embodiment therefore makes it possible to produce a steel body with adequate mechanical characteristics ensuring the carrying of the sub-munition and nevertheless comprising a front part of high density conferring the desired perforating power.
  • Figure 4 shows another embodiment of a piercing military head 1a according to the invention.
  • the submunition 31 is a sub-munition with thermal effect and / or blast comprising a heat load 28 disposed in a case 29 of plastic or composite material.
  • the thermal load is initiated by an igniter 30 connected to the control means 17.
  • a delay (for example pyrotechnic) is arranged upstream of the igniter 30 so that the initiation of the charge occurs only after ejection of the submunition 31 outside the internal cavity 7.
  • damping means 19 is divided into three parts: a front block 19a surrounding the submunition ejection device, a cylindrical central block 19b surrounding the submunition 31 and a rear block 19c surrounding the ejection device 13 of the base 8.
  • the blocks 19a, 19b and 19c can thus be made individually outside the munition and then placed in the internal cavity 7 during assembly.
  • the medial block 19b will be bonded to the rear cylindrical portion 6b of the penetration body 6.
  • the sub-munition 31 is slidably disposed within the medial block 19b.
  • FIGS. 1 and 2 It is possible to equip the embodiments of FIGS. 1 and 2 with a front tip 6a comprising bars arranged in bores.
  • thermobaric thermobaric
  • the device for ejecting the base 8 can be coupled to a means for measuring the temperature external to the munition. It will thus be possible in case of significant increase in this temperature (for example as a result of a fire) to control the ejection of the base 8. This ejection will ensure a deconfinement of the internal cavity 7 which will prevent any accidental explosion of the ammunition .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Window Of Vehicle (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (10)

  1. Munition (1) gegen Bunker, umfassend einen Eindringkörper (6), der einen durch einen Geschoßboden (8) geschlossenen inneren Hohlraum (7) begrenzt, wobei der Hohlraum (7) wenigstens eine Untermunition (31) einschließt, dadurch gekennzeichnet, dass der Hohlraum (7) eine Vorrichtung zum Auswurf (9) der genannten Untermunition sowie eine Vorrichtung zum Auswurf (13) des Geschossbodens (8) einschließt, wobei die Untermunition oder Untermunitionen und die Vorrichtungen zum Auswurf von wenigstens einer der Wände des inneren Hohlraums durch ein Dämpfungsmaterial (19) isoliert sind.
  2. Munition gegen Bunker nach Anspruch 1, dadurch gekennzeichnet, dass die Untermunition oder Untermunitionen (31) eine Sprengladung (22) umfassen, die in einer Splitter erzeugenden Hülle (23) angeordnet ist.
  3. Munition gegen Bunker nach Anspruch 2, dadurch gekennzeichnet, dass die Sprengladung (22) der Untermunition oder Untermunitionen (31) zwei Zündvorrichtungen (25) umfasst, wobei jede Vorrichtung im Bereich eines Endes der Splitter erzeugenden Hülle (23) angeordnet ist, und die gemeinsame Zündung der beiden Vorrichtungen eine Fokussierung der Splitter gewährleistet.
  4. Munition gegen Bunker nach Anspruch 1, dadurch gekennzeichnet, dass die Untermunition (31) eine Ladung (28) mit Wärme-Brandwirkung und/oder Luftdruckwirkung oder eine thermobarische Ladung umfasst.
  5. Munition gegen Bunker nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Dämpfungsmittel (19) wenigstens zwei Blöcke umfasst.
  6. Munition gegen Bunker nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie ein Steuermittel (17) enthält, das mit einem Zünder (18) verbunden ist, der die Erfassung der Durchquerung einer Wand gewährleistet, wobei das Steuermittel in Reihenfolge zunächst die Initiierung der Vorrichtung (13) zum Auswurf des Geschoßbodens, dann die der Vorrichtung (9) zum Auswurf der Untermunition oder Untermunitionen (31) gewährleistet.
  7. Munition gegen Bunker nach Anspruch 6, dadurch gekennzeichnet, dass die Initiierung der Vorrichtung zum Auswurf (9) der Untermunition oder Untermunitionen (31) nach der Durchquerung der Wand gesteuert wird.
  8. Munition gegen Bunker nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Eindringkörper (6) eine vordere Spitze enthält, die wenigstens einen in wenigstens einer Bohrung gebördelten Stab (26a,26b,26c) umfasst.
  9. Munition gegen Bunker nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Eindringkörper (6) fest mit einem Treibstoffsystem (2) verbunden ist.
  10. Munition gegen Bunker nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Eindringkörper (6) fest mit einem Lenkungs-/Regelungsmodul (4) verbunden ist.
EP04292219A 2003-10-03 2004-09-16 Anti-Bunker Munition Active EP1521053B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0311644 2003-10-03
FR0311644A FR2860580B1 (fr) 2003-10-03 2003-10-03 Munition anti bunker

Publications (2)

Publication Number Publication Date
EP1521053A1 EP1521053A1 (de) 2005-04-06
EP1521053B1 true EP1521053B1 (de) 2006-07-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04292219A Active EP1521053B1 (de) 2003-10-03 2004-09-16 Anti-Bunker Munition

Country Status (5)

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US (1) US20060016360A1 (de)
EP (1) EP1521053B1 (de)
AT (1) ATE333083T1 (de)
DE (1) DE602004001496T2 (de)
FR (1) FR2860580B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060081149A1 (en) * 2004-03-18 2006-04-20 Salizzoni Randy M Payload expulsion system for deep-target penetrators
DE102008057769A1 (de) * 2008-11-17 2010-05-20 Rheinmetall Waffe Munition Gmbh Zündeinrichtung
US8430028B2 (en) * 2010-07-30 2013-04-30 Raytheon Company Shock dampened explosive initiator assembly and method for dampening shock within a delivery vehicle
US9146088B1 (en) * 2012-04-12 2015-09-29 The Boeing Company High shock survivable fuze
US9851187B2 (en) * 2015-03-12 2017-12-26 Raytheon Company Shock mitigation assembly for a penetrating weapon
US10724836B1 (en) * 2016-12-15 2020-07-28 The United States Of America, As Represented By The Secretary Of The Navy Cook-off mitigation systems

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US202203A (en) * 1878-04-09 Improvement in percussion-shells
US3142959A (en) * 1959-09-11 1964-08-04 Phillips Petroleum Co Range control of self propelled missile
US3199406A (en) * 1961-06-21 1965-08-10 Mb Assoc In-line launching
US3705549A (en) * 1970-11-25 1972-12-12 Us Army Ammunition
US3897730A (en) * 1973-06-21 1975-08-05 Gen Dynamics Corp Penetrating spear with suspended warhead
US3981242A (en) * 1974-02-15 1976-09-21 The United States Of America As Represented By The Secretary Of The Army Infrastar cannister cartridge
DE3118403C2 (de) * 1981-05-09 1983-11-17 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "Vorrichtung zum lösbaren Verriegeln einer Granate in einem kombinierten Geschoß"
DE3209594A1 (de) * 1982-03-17 1983-09-29 L'Etat Français représenté par le Délégué Général pour l'Armement, 75997 Paris Panzerbrechendes wuchtgeschoss insbesondere zum bekaempfen von mehrplattenzielen
FR2632721B1 (fr) * 1988-06-10 1993-05-07 Thomson Brandt Armements Procede d'ejection de sous-munitions et projectile mettant en oeuvre un tel procede
DE3833751C1 (de) * 1988-10-05 1999-06-10 Diehl Stiftung & Co Auslöseeinrichtung für das Zünden eines Anti-Shelter-Projektiles
DE3920016A1 (de) * 1989-06-20 1991-01-10 Messerschmitt Boelkow Blohm Gefechtskopf zur bekaempfung von seezielen
US5429052A (en) * 1993-07-30 1995-07-04 Buck Werke Gmbh & Co. Circuit arrangement for firing dummy target sub-members in a freely selectable chronological sequence
US6276277B1 (en) * 1999-04-22 2001-08-21 Lockheed Martin Corporation Rocket-boosted guided hard target penetrator
SE519807C2 (sv) * 2000-07-03 2003-04-08 Bofors Weapon Sys Ab Stridsdelar medbärande enhet
US6672220B2 (en) * 2001-05-11 2004-01-06 Lockheed Martin Corporation Apparatus and method for dispersing munitions from a projectile
US6874425B1 (en) * 2001-05-18 2005-04-05 Day & Zimmermann, Inc. Projectile carrying sub-munitions
SI1316774T1 (sl) * 2001-11-28 2006-12-31 Rheinmetall Waffe Munition Izstrelek z mocnim penetracijskim in lateralnim ucinkom z integrirano pripravo za razkroj delcev

Also Published As

Publication number Publication date
FR2860580B1 (fr) 2005-12-16
EP1521053A1 (de) 2005-04-06
DE602004001496T2 (de) 2007-06-14
DE602004001496D1 (de) 2006-08-24
US20060016360A1 (en) 2006-01-26
FR2860580A1 (fr) 2005-04-08
ATE333083T1 (de) 2006-08-15

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