EP1363103B1 - Geformte Ladung und Verfahren zum Montieren einer solchen Ladung - Google Patents

Geformte Ladung und Verfahren zum Montieren einer solchen Ladung Download PDF

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Publication number
EP1363103B1
EP1363103B1 EP03291091A EP03291091A EP1363103B1 EP 1363103 B1 EP1363103 B1 EP 1363103B1 EP 03291091 A EP03291091 A EP 03291091A EP 03291091 A EP03291091 A EP 03291091A EP 1363103 B1 EP1363103 B1 EP 1363103B1
Authority
EP
European Patent Office
Prior art keywords
ring
casing
hollow charge
charge according
shims
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03291091A
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English (en)
French (fr)
Other versions
EP1363103A1 (de
Inventor
Damien Doue
Sophie Delaroche
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
Nexter Munitions SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nexter Munitions SA filed Critical Nexter Munitions SA
Publication of EP1363103A1 publication Critical patent/EP1363103A1/de
Application granted granted Critical
Publication of EP1363103B1 publication Critical patent/EP1363103B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/10—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/036—Manufacturing processes therefor

Definitions

  • the technical field of the invention is that of formed charges, ie charges comprising an explosive charge disposed in an envelope and a coating applied to the charge.
  • the FR2669721 thus describes a shaped charge with a conical coating (or hollow charge).
  • the charges are generally designed to be placed in a well-defined geometry envelope. Most often the explosive charge is poured inside the envelope and the coating is glued on a front face of the explosive charge.
  • the FR2669721 also proposes means for compensating thermal expansion between the explosive charge and the envelope. These means comprise an annular filling of a compressible material (for example a polysiloxane elastomer) which is interposed between the envelope of the load and the explosive charge.
  • a compressible material for example a polysiloxane elastomer
  • the FR2669721 proposes to provide a support shoulder disposed in front of the coating with the interposition of a spring washer to compensate for thermal expansion.
  • the rear support is provided by a welded lid that will carry the detonator.
  • the charge formed according to the invention comprises means ensuring a simple and reliable way of securing the envelope and the load. These means being further adaptable to an envelope having a different internal diameter.
  • the load according to the invention also comprises means ensuring in a simple way a centering of the load and the detonator even when there is a radial clearance between the envelope and the load.
  • the invention also relates to a method of mounting such a shaped charge.
  • the subject of the invention is a charge formed comprising an explosive charge placed in an envelope, a coating applied to the load, and means ensuring the joining of the envelope and the load carrying the coating.
  • the securing means comprise a ring having an abutment surface for the coating, and at least two spacers each covering an angular sector, wedges moving radially relative to the ring by the action of a clamping means, to come s apply against an internal bearing surface of the envelope.
  • the clamping means may comprise at least one screw for each shim, screw cooperating with a thread formed in the ring and whose end will push the shim when screwing the screw.
  • At least one screw may have a groove near its end, this screw being housed in a tapping of the wedge which opens into an internal counterbore.
  • each shim may comprise a conical outer profile intended to cooperate with an inner surface of the casing forming a conical bearing to ensure the axial retention of the load relative to the casing.
  • the ring may comprise an outer cylindrical profile for guiding the ring relative to the envelope.
  • the ring may also include an internal cylindrical surface surrounding an outer rim of the coating.
  • the formed charge may comprise a spring washer interposed between the coating and the abutment surface of the ring.
  • the load may include four holds regularly distributed angularly.
  • the wedges may not cover the entire outer profile of the ring and will therefore be separated by grooves.
  • the formed charge may comprise a centering cap receiving the explosive charge, the base comprising an outer cylindrical surface fitted into a cylindrical bore of the envelope.
  • the base may carry an axial bore for receiving a detonator.
  • the load may comprise an annular space disposed between the explosive charge and the envelope, a space filled with a compressible material.
  • a shaped charge 1 according to the invention comprises an explosive charge 2 disposed in a casing 3.
  • a conical coating 4 is applied to the load which carries for this purpose a cavity of complementary shape of the coating.
  • the explosive charge carries at its other end a priming explosive 30 and a wave conformation screen 31.
  • the casing 3 comprises a bore 5 which has three cylindrical bearing surfaces 5a, 5b and 5c separated by two conical portions 6a and 6b.
  • the median cylindrical portion 5b therefore has a diameter greater than that of the cylindrical portions 5a and 5c.
  • This envelope is made of steel.
  • An annular space 7 is interposed between the explosive charge 2 and the envelope 3. This space is intended to allow the relative thermal expansions of the explosive charge and the envelope. It will advantageously be filled by a compressible material (not shown) that can be put in place before positioning the explosive charge. We can thus achieve and position in the envelope a polyurethane foam tube.
  • the compressible material may also be an elastomer injected into the annular space as described by FR2669721 .
  • the load 1 comprises means ensuring the joining of the envelope 3 and the load 2 carrying the coating 4.
  • These securing means 8 comprise a ring 9 which has an abutment surface 10 (see also Figure 3b) for the coating 4, and at least two wedges 11a, 11b which each cover an angular sector.
  • abutment surface 10 see also Figure 3b
  • wedges 11a, 11b which each cover an angular sector.
  • four wedges are provided (see Figure 2).
  • a conical spring washer 23 is interposed between the coating 4 and the abutment surface 10 of the ring 9. This washer 23 makes it possible to compensate the axial clearances as well as the differential thermal expansions between the coating and the explosive charge.
  • the shims 11 can move radially relative to the ring by the action of a clamping means constituted by screws 12a, 12b. Each screw cooperates with a tapping 16 which is arranged in the ring 9. The end of each screw therefore pushes the wedge during screwing of the screw.
  • At least one screw 12a per sector has a groove 13 which is arranged near its end. This screw is housed in a tapping 14 of the wedge which opens into an internal counterbore 15.
  • Such a screw is called “captive”. Indeed the screw engages in the tapping 16 of the ring and then in that (14) of the shim 11.
  • the tapping 14 of the shim has a reduced length of the order of 2 to 3 mm and less than the length of the throat 13.
  • the screw 12a can therefore no longer be removed from the shim once the groove 13 is opposite the tapping 14. This ensures that the shims 11 and the ring 9 are secured during the assembly operations.
  • FIGS. 2 to 4b show a securing means 8 associating four shims 11 with a ring 9.
  • Each wedge is pushed by three screws, a captive screw 12a and two normal screws 12b which are arranged on either side of the captive screw.
  • the axes of the three screws associated with a wedge are parallel to each other.
  • Each shim 11 has a conical outer profile 18 which is intended to cooperate with the conical portion 6a of the inner surface of the envelope.
  • Each shim 11 also comprises a conical inner profile 19 which is intended to cooperate with a complementary conical profile 20 arranged on the ring 9.
  • the ring 9 also has an external cylindrical profile 21 which has the same diameter as the cylindrical surface 5a and which makes it possible to guide the ring 9 with respect to the casing 3.
  • An O-ring may be provided (not shown ) in a groove on this external profile to improve the seal.
  • the ring 9 also has an internal cylindrical surface 22 surrounding an outer rim of the coating 4 and ensuring a centering of the ring 9 relative to the load.
  • the ring 9 finally has a peripheral groove 24 in which the shims 11a, 11b, 11c and 11d slide radially.
  • the shims 11 will not cover in their tightened position (see Figure 2) all the outer circular profile of the ring 9.
  • the grooves 34 and separate wedges and at least one of the grooves will be arranged opposite a peripheral groove (not shown) carried by the ring 9.
  • Such an arrangement makes it possible to position a wire guide (not shown), made of metallic material or not, and which will allow the passage of the control wires of firing between a rocket (not shown) of the ammunition and a detonator 29.
  • Figures 3a and 3b show the securing means 8 in its loose position.
  • the screws 12b are completely loosened and the screws 12a then make it possible to bring the wedges 11 into contact with the ring 9 at their complementary conical bearing surfaces 19 and 20.
  • the maximum external diameter of the means 8 is that of the cylindrical profile 21 outer ring 9.
  • the ring carrying the four shims 11 can be introduced without difficulty inside the casing 3.
  • Figures 4a and 4b show the securing means 8 in its locking position.
  • the screws 12a and 12b have all been tightened and they have pushed the wedges 11 radially, which then give the means 8 an external diameter greater than that of the external cylindrical profile 21 of the ring 9.
  • the shims can thus be applied against an internal bearing surface of the casing 3 (the conical surface 6a) and ensure a blocking of the explosive charge 2 with respect to the casing 3.
  • the load 1 comprises a centering cap 25 which has a bowl 26 receiving the explosive charge 2.
  • This base 25 comprises an outer cylindrical surface 27 which has the same diameter as the cylindrical surface 5c of the envelope 3.
  • the base 25 also carries an axial bore 28 for receiving the detonator 29.
  • another wire guide (not shown) will be interposed between the rear base 25 and the casing 3 at a peripheral groove. This wire guide will drive the electrical wires that will ignite the detonator.
  • a securing means 8 according to the invention was made. This means is stored in storage in the loosened position shown in Figures 3a and 3b.
  • an explosive loading block 2 having a coating 4 and priming means 30 has been manufactured.
  • the explosive charge is positioned first in the base 25 and the entire base / load is placed in the envelope 3 placed on a table 33.
  • the cover 4 is then capped with the ring 9 by interposing the spring washer 23.
  • a compressible material can then be injected between the envelope and the explosive charge.
  • injection of this material will be made possible by the presence of injection channels (not shown) made on the rim of the coating and degassing vents (not shown) made in the form of grooves carried by the base 25.
  • injection channels not shown
  • degassing vents not shown
  • An advantage of the invention is that base 25 and ring 9 ensure a perfect centering of the explosive charge relative to the envelope even if the median cylindrical profile 5b is in the raw state.
  • the base 25 makes it possible to ensure perfect centering of the detonator 29 with respect to the explosive charge. Indeed, this centering results solely from the coaxiality of the bowl 26 and the bore 28. A slight misalignment of the cylindrical bearing surfaces 5a and 5b therefore has no effect on the precision of the priming which results solely from the geometry of the base 25.
  • the charge formed and the method according to the invention are thus particularly suited to the "retrofit" of ammunition, ie to the introduction of a shaped charge (which has been developed for a given ammunition) to the inside of another envelope of different diameter. It suffices that this envelope has cylindrical centering spans 5a, 5c which is generally the case.
  • the shims can be given different external profiles so as to adapt the invention to different geometries of envelopes.
  • shims 11 are devoid of conical bearing surface 6a, it will be possible to give shims 11 a cylindrical outer profile having a knurling or indentations to ensure when clamping wedges the attachment of the latter on the inner surface of the envelope 3 thus blocking the explosive charge relative to the envelope.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Connection Of Plates (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Lining And Supports For Tunnels (AREA)

Claims (15)

  1. Hohlladung (1) umfassend eine in einer Hülle (3) angeordnete Explosivladung (2), eine auf die Ladung aufgebrachte Beschichtung (4) und Mittel (8), die den Zusammenschluss der Hülle (3) und der die Beschichtung (4) tragenden Ladung (2) gewährleisten, wobei die Mittel zum Zusammenschluss einen Ring (9) umfassen, der eine Anschlagfläche (10) für die Beschichtung (4) aufweist, wobei die Ladung dadurch gekennzeichnet ist, dass sie wenigstens zwei Beilagen (11) umfasst, die jeweils einen Kreissektor abdeckt, wobei sich die Beilagen radial in Bezug auf den Ring (9) durch die Einwirkung eines Klemmmittels (12) verlagern, um an einer inneren Stützfläche (6a) der Hülle (3) zur Anlage zu kommen.
  2. Hohlladung nach Anspruch 1, dadurch gekennzeichnet, dass das Klemmmittel wenigstens eine Schraube (12a, 12b) für jede Beilage (11) umfasst, wobei die Schraube mit einem in den Ring (9) eingebrachten Innengewinde (16) zusammenwirkt und dessen Ende beim Verschrauben der Schraube die Beilage (11) drückt.
  3. Hohlladung nach Anspruch 2, dadurch gekennzeichnet, dass wenigstens eine Schraube (12a) eine Vertiefung (13) in der Nähe ihres Endes aufweist, wobei diese Schraube in einem Innengewinde (16) der Beilage untergebracht ist, das in einem inneren Vlies (15) mündet.
  4. Hohlladung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jede Beilage (11) ein konisches Außenprofil (18) umfasst, das dafür vorgesehen ist, mit einer inneren Fläche (6a) der Hülle zusammenzuwirken, die eine konische Abstützung bildet, um das axiale Festhalten der Ladung in Bezug auf die Hülle (3) zu gewährleisten.
  5. Hohlladung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Ring (9) ein zylindrisches Außenprofil (21) umfasst, das die Führung der Rings (9) in Bezug auf die Hülle (3) gewährleistet.
  6. Hohlladung nach Anspruch 5, dadurch gekennzeichnet, dass der Ring eine innere zylindrische Fläche (22) umfasst, die einen äußeren Rand der Beschichtung (4) umgibt.
  7. Hohlladung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass sie einen Federring (23) umfasst, der zwischen die Beschichtung (4) und die Anschlagfläche (10) des Rings (9) eingefügt ist.
  8. Hohlladung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie vier Beilagen (11a, 11b, 11c, 11d) umfasst, die gleichmäßig über den Umfang verteilt sind.
  9. Hohlladung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Beilagen (11) nicht das ganze Außenprofil des Rings bedecken und durch Nuten (34) getrennt sind.
  10. Hohlladung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass sie einen Geschoßboden zur Zentrierung (25) umfasst, der die Explosivladung (2) aufnimmt, wobei der Geschoßboden eine zylindrische Außenfläche (27) umfasst, die in eine zylindrische Bohrung (5c) der Hülle (3) eingepasst ist.
  11. Hohlladung nach Anspruch 10, dadurch gekennzeichnet, dass der Geschoßboden (25) eine axiale Bohrung (28) trägt, die dafür vorgesehen ist, einen Zünder (29) aufzunehmen.
  12. Hohlladung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass sie einen Ringraum (7) umfasst, der zwischen die Explosivladung (2) und die Hülle (3) eingefügt ist, wobei der Raum mit einem zusammendrückbaren Material gefüllt ist.
  13. Verfahren zur Montage einer Hohlladung nach einem der Ansprüche 2 bis 12, wobei das Verfahren durch die folgenden Schritte gekennzeichnet ist :
    - Es wird im Inneren einer Hülle (3) eine Explosivladung (2) positioniert, die in einem in einem inneren Durchmesser der Hülle eingepassten Geschossboden (25) angeordnet ist, wobei die Ladung eine Beschichtung (4) trägt,
    - die Beschichtung (4) wird mit einem Ring (9) überdeckt, der ein zylindrisches Außenprofil (21) umfasst, das die Führung des Rings in Bezug auf die Hülle (3) gewährleistet, wobei der Ring wenigstens zwei Beilagen (11) trägt, die jeweils einen Kreissektor abdecken, wobei sich die Beilagen radial vom Ring (9) durch Verschrauben von Halteschrauben (12) entfernen können, um an einer Stützfläche zur Anlage zu kommen.
    - die Halteschrauben (12) werden so verschraubt, dass die Beilagen (11) an der inneren Anschlagfläche der Hülle (3) zur Anlage kommen.
  14. Verfahren zur Montage einer Hohlladung nach Anspruch 13, wobei das Verfahren dadurch gekennzeichnet ist, dass nach Verschrauben der Beilagen (11) ein zusammendrückbares Material zwischen die Hülle (3) und die Explosivladung (2) eingespritzt wird.
  15. Verfahren zur Montage einer Hohlladung nach Anspruch 13, wobei das Verfahren dadurch gekennzeichnet ist, dass, bevor die Beschichtung mit einem Ring (9) überdeckt wird, wenigstens eine Schicht eines zusammendrückbaren Materials zwischen der Hülle (33) und der Explosivladung (2) angeordnet wird.
EP03291091A 2002-05-16 2003-05-06 Geformte Ladung und Verfahren zum Montieren einer solchen Ladung Expired - Lifetime EP1363103B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0206056A FR2839777B1 (fr) 2002-05-16 2002-05-16 Charge formee et procede de montage d'une telle charge formee
FR0206056 2002-05-16

Publications (2)

Publication Number Publication Date
EP1363103A1 EP1363103A1 (de) 2003-11-19
EP1363103B1 true EP1363103B1 (de) 2007-07-04

Family

ID=29266112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03291091A Expired - Lifetime EP1363103B1 (de) 2002-05-16 2003-05-06 Geformte Ladung und Verfahren zum Montieren einer solchen Ladung

Country Status (5)

Country Link
EP (1) EP1363103B1 (de)
AT (1) ATE366403T1 (de)
DE (1) DE60314681T2 (de)
ES (1) ES2290408T3 (de)
FR (1) FR2839777B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2723781C1 (ru) * 2019-09-17 2020-06-17 Акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" Кумулятивная боевая часть

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10648300B2 (en) 2014-04-15 2020-05-12 Hunting Titan, Inc. Venting system for a shaped charge in the event of deflagration
FR3068456B1 (fr) * 2017-06-28 2019-07-19 Nexter Munitions Charge formee

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB578845A (en) * 1942-11-11 1946-07-15 James Taylor Improvements in or relating to projectiles for use against armour plate and the like
US3002455A (en) * 1955-04-12 1961-10-03 Bofors Ab Ballistic missile
CH475543A (de) * 1966-04-20 1969-07-15 Diehl Fa Hohlladung für Landminen
FR2669721B1 (fr) * 1990-11-28 1993-01-08 Commissariat Energie Atomique Charge creuse.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2723781C1 (ru) * 2019-09-17 2020-06-17 Акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" Кумулятивная боевая часть

Also Published As

Publication number Publication date
EP1363103A1 (de) 2003-11-19
FR2839777A1 (fr) 2003-11-21
ATE366403T1 (de) 2007-07-15
DE60314681T2 (de) 2008-03-06
DE60314681D1 (de) 2007-08-16
ES2290408T3 (es) 2008-02-16
FR2839777B1 (fr) 2004-07-02

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