FR2669721A1 - HOLLOW LOAD. - Google Patents

HOLLOW LOAD. Download PDF

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Publication number
FR2669721A1
FR2669721A1 FR9014873A FR9014873A FR2669721A1 FR 2669721 A1 FR2669721 A1 FR 2669721A1 FR 9014873 A FR9014873 A FR 9014873A FR 9014873 A FR9014873 A FR 9014873A FR 2669721 A1 FR2669721 A1 FR 2669721A1
Authority
FR
France
Prior art keywords
enclosure
projectile
charge
compressible material
charge 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.)
Granted
Application number
FR9014873A
Other languages
French (fr)
Other versions
FR2669721B1 (en
Inventor
Deguin Rene
Mizzi Herve
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR9014873A priority Critical patent/FR2669721B1/en
Priority to DE69110634T priority patent/DE69110634T2/en
Priority to EP91403189A priority patent/EP0491587B1/en
Publication of FR2669721A1 publication Critical patent/FR2669721A1/en
Application granted granted Critical
Publication of FR2669721B1 publication Critical patent/FR2669721B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Buffer Packaging (AREA)
  • Toys (AREA)

Abstract

Charge creuse comprenant essentiellement une couche de matériau compressible (15) injecté entre l'enveloppe cylindrique (5) et la charge explosive (1) afin d'empêcher l'apparition de jeux ou de contraintes internes aux changements de température ou aux chocs. Un montage élastique peut aussi être proposé en direction axiale entre le projectile (4) et l'enveloppe cylindrique (5).Hollow charge essentially comprising a layer of compressible material (15) injected between the cylindrical envelope (5) and the explosive charge (1) in order to prevent the appearance of backlash or internal stresses due to temperature changes or shocks. An elastic mounting can also be proposed in the axial direction between the projectile (4) and the cylindrical envelope (5).

Description

ii

CHARGE CREUSEHOLLOW LOAD

DESCRIPTIONDESCRIPTION

L'invention se rapporte à une charge creuse.  The invention relates to a shaped charge.

Les charges creuses se composent pour L'es-  The shaped charges are composed for L'es-

sentiel d'un volume d'explosif de forme normalement cylindrique, entouré sur toute sa surface par une enceinte sauf à une extrémité o l'explosif se termine par une face présentant une empreinte conique Cette face est revêtue d'une couche métallique en forme d'enveloppe conique qui constitue un projectile A la mise à feu, l'enveloppe subit des forces centripètes  sentiel of an explosive volume of normally cylindrical shape, surrounded on its entire surface by an enclosure except at one end where the explosive ends in a face having a conical imprint This face is coated with a metallic layer in the form of conical envelope which constitutes a projectile On ignition, the envelope undergoes centripetal forces

importantes qui la déforment en ramenant progressive-  which distort it by bringing it gradually-

ment sa matière dans la direction de projection, qui correspond à l'axe de la charge creuse Le projectile  its material in the direction of projection, which corresponds to the axis of the shaped charge The projectile

devient finalement un jet de matière mince et longi-  ultimately becomes a stream of thin, long material

ligne très efficace pour percer des blindages.  very effective line for piercing shields.

Un sérieux problème est lié aux différences de coefficients de dilatation entre la charge, le projectile et l'enceinte Aux échauffements ou aux refroidissements, on obtient soit des jeux qui peuvent  A serious problem is linked to the differences in expansion coefficients between the charge, the projectile and the enclosure. During heating or cooling, we obtain either games which can

causer un mauvais fonctionnement de la charge à l'ex-  cause the load to malfunction ex-

plosion, soit des contraintes dans l'explosif qui peuvent l'endommager Les chocs auxquels l'enceinte  plosion, i.e. stresses in the explosive which can damage it Shocks to which the enclosure

peut être soumise sont en outre intégralement réper-  can be submitted are also fully listed

cutés dans l'explosif.cut in the explosive.

L'objet de l'invention est de supprimer  The object of the invention is to remove

ces inconvénients en introduisant des éléments compres-  these disadvantages by introducing compres-

sibles entre les constituants de la charge creuse  between the constituents of the shaped charge

là o les problèmes mentionnés plus haut peuvent appa-  where the problems mentioned above may arise

ra t re.ra t re.

Sous sa forme la plus générale, l'invention  In its most general form, the invention

consiste à intercaler une couche de matériau compres-  consists of inserting a layer of compressed material

sible entre la charge et l'enceinte, dans un volume  between the load and the enclosure, in a volume

sensiblement circonférentiel.substantially circumferential.

Une amélioration consiste à intercaler un ressort entre une collerette d'appui disposée sur  An improvement consists in interposing a spring between a support flange disposed on

le bord du projectile et une butée circulaire apparte-  the edge of the projectile and a circular stopper

nant à l'enceinte, pour obtenir un montage axial élas-  to the enclosure, to obtain an elastic axial mounting

tique entre le projectile, la charge et l'enceinte. Le matériau compressible est avantageusement  tick between the projectile, the charge and the enclosure. The compressible material is advantageously

un matériau injectable en couche mince tel qu'un éLas-  a thin layer injectable material such as Elas-

tomère de polysiloxane réticulé à froid dans lequel sont dispersées des microsphères creuses en copolymère de chlorure de vinylidène et d'acrylonitrile, corps dont la structure et le procédé de fabrication ont été décrits dans la demande de brevet français numéro 10256 Si on utilise de tels matériaux injectables, il est avantageux de prévoir à un endroit approprié de la charge creuse des perçages d'injection ainsi que des conduits d'éventement d'air opposées à ces perçages. L'étanchéité peut être complétée par des joints circulaires entre le projectile et l'enceinte ou entre des parties démontables constituant l'enceinte. L'invention va maitenant être décrite plus en détail à l'aide des figures suivantes annexées à titre illustratif et non limitatif: la figure 1 est une vue d'ensemble de la charge creuse; et  cold crosslinked polysiloxane in which are dispersed hollow microspheres of copolymer of vinylidene chloride and acrylonitrile, body whose structure and manufacturing process have been described in French patent application number 10256 If such materials are used injectable, it is advantageous to provide injection holes as well as air vent ducts opposite these holes at an appropriate location in the hollow charge. The tightness can be completed by circular joints between the projectile and the enclosure or between removable parts constituting the enclosure. The invention will now be described in more detail with the aid of the following figures, which are given by way of illustration and not limitation: FIG. 1 is an overall view of the shaped charge; and

les figures 2 et 3 sont deux agrandisse-  Figures 2 and 3 are two enlargements-

ments de parties opposées de la charge.  opposite parts of the load.

La charge creuse comprend une charge explo-  The shaped charge includes an explosive charge

sive 1 de forme essentiellement cylindrique à l'excep-  sive 1 with an essentially cylindrical shape except

tion de sa face avant, qui est creusée selon une empreinte conique 2 dont le sommet appartient à l'axe  tion of its front face, which is hollowed out according to a conical imprint 2 whose apex belongs to the axis

3 de la charge explosive 1 Cette face avant est recou-  3 of the explosive charge 1 This front face is covered

verte d'un projectile 4 sous forme d'un revêtement métallique en forme d'enveloppe conique appuyé par sa face convexe sur la charge explosive 1 Une enceinte entoure la charge explosive 1; elle se compose d'une enveloppe cylindrique 5 entourant la surface latérale de la charge explosive 1 et d'un culot 6 en contact avec la face arrière, opposée au projectile 4, de  green of a projectile 4 in the form of a metallic coating in the form of a conical envelope supported by its convex face on the explosive charge 1 An enclosure surrounds the explosive charge 1; it consists of a cylindrical shell 5 surrounding the lateral surface of the explosive charge 1 and a base 6 in contact with the rear face, opposite the projectile 4, of

la charge explosive 1 Un couvercle 7 est fixé à l'ar-  the explosive charge 1 A cover 7 is attached to the rear

rière de l'enveloppe cylindrique 5 par des moyens non représentés, par exemple par un soudage, et permet de maintenir le culot 6 contre la charge explosive  the cylindrical casing 5 by means not shown, for example by welding, and makes it possible to maintain the base 6 against the explosive charge

1 Par contre, un jeu existe entre l'enveloppe cylin-  1 On the other hand, a clearance exists between the cylindrical envelope

drique 5 et la charge explosive 1.drique 5 and the explosive charge 1.

L'enveloppe cylindrique 5 dépasse vers l'avant du projectile 4 et sa face interne porte une butée 8 circulaire Le projectile 4 comporte quant  The cylindrical casing 5 projects towards the front of the projectile 4 and its internal face carries a circular stop 8 The projectile 4 comprises

à lui, sur le bord qui correspond à l'extrémité épa-  to him, on the edge which corresponds to the flat end

nouie du cône, une collerette d'appui 9 circulaire qui s'étend en face de la butée 8 Une rondelle Belleville 10 élastique est comprimée entre la butée 8 et la collerette d'appui 9 et repousse le projectile  knotted from the cone, a circular support flange 9 which extends opposite the stop 8 An elastic Belleville washer 10 is compressed between the stop 8 and the support flange 9 and repels the projectile

4 vers l'arrière.4 backwards.

Un jeu existe entre la charge explosive 1 et la collerette d'appui 9 Des perçages d'injection 11 sont ménagés à travers le projectile 4 à cet endroit On peut disposer de plusieurs perçages sur une même circonférence Ils permettent d'injecter un matériau compressible de manière à remplir le jeu entre l'enveloppe cylindrique 5 d'une part, la charge explosive 1 et le projectile 4 d'autre part Le culot 6 est déjà installé quand cette opération a lieu,  There is a play between the explosive charge 1 and the support flange 9 Injection holes 11 are formed through the projectile 4 at this location Several holes can be provided on the same circumference They make it possible to inject a compressible material of so as to fill the clearance between the cylindrical casing 5 on the one hand, the explosive charge 1 and the projectile 4 on the other hand The base 6 is already installed when this operation takes place,

et on prend la précaution d'insérer deux joints circu-  and we take the precaution to insert two circular seals

laires 12 et 13 respectivement représentés sur les figures 2 et 3) aux extrémités avant et arrière de la charge creuse, entre l'enveloppe cylindrique 5 d'une part, et respectivement la collerette d'appui 9 et le culot 7 d'autre part On obtient alors un volume parfaitement étanche à l'exception des perçages d'injection 11, mais il faut compléter le dispositif par des conduits d'éventement 14 qui permettent à  laires 12 and 13 respectively shown in Figures 2 and 3) at the front and rear ends of the shaped charge, between the cylindrical casing 5 on the one hand, and the support flange 9 and the base 7 respectively on the other hand A perfectly sealed volume is then obtained, with the exception of the injection holes 11, but the device must be completed with venting pipes 14 which allow

l'air emprisonné d'être chassé Un conduit d'éven-  trapped air being expelled A vent pipe

tement 14 envisageable, représenté figure 3, consiste en un perçage coudé réalisé entre les faces latérale et arrière du culot 6 Quand l'injection est terminée, le couvercle 7 peut être mis en place, et le perçage  Possible consideration 14, shown in Figure 3, consists of an angled drilling made between the side and rear faces of the base 6 When the injection is complete, the cover 7 can be put in place, and the drilling

d'injection 11 est bouché.11 is blocked.

Un matériau compressible présente la pro-  A compressible material has the pro-

priété de s'écraser ou au contraire de se dilater suivant les dilatations et les contractions d'origine thermique produites sur les constituants de la charge creuse pour maintenir les contraintes internes à un très bas niveau Son élasticité lui permet de reprendre sa forme initiale dès que le changement de température cesse Aucun jeu pouvant affecter la violence de la projection n'apparaÂt donc, ce qui promet une explosion de bonne qualité Les chocs sur l'enceinte sont par ailleurs amortis par le matériau compressible et le ressort Un tel comportement diffère entièrement de celui des couches de colle qui existent déjà au même endroit dans certaines charges creuses pour lier la  request to crash or, on the contrary, to expand depending on the thermal expansion and contraction produced on the constituents of the hollow charge to keep internal stresses at a very low level Its elasticity allows it to resume its initial shape as soon as the temperature change ceases No play that can affect the violence of the projection therefore appears, which promises a good quality explosion The shocks on the enclosure are moreover absorbed by the compressible material and the spring Such behavior completely differs from that of the layers of glue which already exist in the same place in certain shaped charges to bond the

charge explosive 1 à l'enceinte.explosive charge 1 at the enclosure.

Claims (6)

REVENDICATIONS 1 Charge creuse comprenant un projectile conique ( 4), une charge explosive ( 1) du côté convexe du projectile, une enceinte ( 5, 6) entourant la charge ( 1), caractérisée en ce qu'elle comprend une couche de matériau compressible ( 15) intercalée entre la  1 Hollow charge comprising a conical projectile (4), an explosive charge (1) on the convex side of the projectile, an enclosure (5, 6) surrounding the charge (1), characterized in that it comprises a layer of compressible material ( 15) inserted between the charge ( 1) et l'enceinte ( 5).load (1) and the enclosure (5). 2 Charge creuse selon la revendication 1, caractérisée en ce qu'elle comprend un ressort ( 10) entre une collerette d'appui ( 9) sur le bord du projectile ( 4)et une butée circulaire ( 8)sur  2 hollow charge according to claim 1, characterized in that it comprises a spring (10) between a support flange (9) on the edge of the projectile (4) and a circular stop (8) on l'enceinte ( 5).the enclosure (5). 3 Charge creuse selon la revendication 2, caractérisée en ce que le ressort ( 10) est une  3 shaped charge according to claim 2, characterized in that the spring (10) is a rondelle Belleville.Belleville washer. 4 Charge creuse selon l'une quelconque  4 Shaped charge according to any one des revendications 1 à 3, caractérisée en ce qu'elle  of claims 1 to 3, characterized in that it comprend des perçages d'injection ( 11) du matériau compressible et des conduits ( 14) d'éventement d'air  includes injection holes (11) for the compressible material and air vent ducts (14) opposés aux perçages ( 11).opposite the holes (11). 5 Charge creuse selon l'une quelconque  5 Shallow charge according to any one des revendications 1 à 4, caractérisée en ce qu'elle  of claims 1 to 4, characterized in that it comprend des joints circulaires ( 12, 13) entre le projectile ( 4) et l'enceinte ( 5) ou entre des parties  comprises circular seals (12, 13) between the projectile (4) and the enclosure (5) or between parts démontables ( 5, 6) constituant l'enceinte.  removable (5, 6) constituting the enclosure. 6 Charge creuse selon l'une quelconque  6 Shallow charge according to any one des revendications 1 à 5, caractérisée en ce que le  claims 1 to 5, characterized in that the matériau compressible est un élastomère de polysiloxane  compressible material is a polysiloxane elastomer réticulé à froid dans lequel sont dispersées des micro-  cold crosslinked in which micro- sphères creuses en copolymère de chlorure de vinylidène  hollow spheres of vinylidene chloride copolymer et d'acrylonitrile.and acrylonitrile.
FR9014873A 1990-11-28 1990-11-28 HOLLOW LOAD. Expired - Lifetime FR2669721B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9014873A FR2669721B1 (en) 1990-11-28 1990-11-28 HOLLOW LOAD.
DE69110634T DE69110634T2 (en) 1990-11-28 1991-11-26 Shaped charge.
EP91403189A EP0491587B1 (en) 1990-11-28 1991-11-26 Hollow charge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9014873A FR2669721B1 (en) 1990-11-28 1990-11-28 HOLLOW LOAD.

Publications (2)

Publication Number Publication Date
FR2669721A1 true FR2669721A1 (en) 1992-05-29
FR2669721B1 FR2669721B1 (en) 1993-01-08

Family

ID=9402681

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9014873A Expired - Lifetime FR2669721B1 (en) 1990-11-28 1990-11-28 HOLLOW LOAD.

Country Status (3)

Country Link
EP (1) EP0491587B1 (en)
DE (1) DE69110634T2 (en)
FR (1) FR2669721B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1363103A1 (en) 2002-05-16 2003-11-19 Giat Industries Shaped charge and assembly method therefore
WO2019002219A1 (en) 2017-06-28 2019-01-03 Nexter Munitions Shaped charge

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10221759B4 (en) * 2002-05-16 2005-03-31 Diehl Munitionssysteme Gmbh & Co. Kg warhead
SE524299C2 (en) 2003-03-26 2004-07-20 Saab Ab Effect part (1) forms part of ammunition device such as shell, missile or similar and has casing provided with socket connected to casing opening
DE102004017673B4 (en) * 2004-04-10 2013-12-05 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Device for filling a mold with pourable plastic-bonded explosive
CN101836069A (en) * 2007-08-21 2010-09-15 叶夫根尼·帕夫洛维奇·格尔马诺夫 Hollow charge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543057A (en) * 1946-04-30 1951-02-27 Louis F Porter Elongated flexible tubular explosive
US2936708A (en) * 1957-02-21 1960-05-17 Randel Tool Company Inc Detonative element of apparatus for sinking wells by means of explosive charges
DE2046372A1 (en) * 1970-09-19 1972-03-23 Dynamit Nobel Ag, 5210 Troisdorf Hollow charge - with conical shaper kept in charge contact by springs and adhesive intermediate layer
FR2406798A1 (en) * 1977-10-18 1979-05-18 Messerschmitt Boelkow Blohm HOLLOW LOAD IN THE FORM OF A REVOLUTION BODY
EP0378749A1 (en) * 1989-01-19 1990-07-25 Rheinmetall GmbH Apparatus for fastening the liner of a hollow charge or a charge making a projectile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543057A (en) * 1946-04-30 1951-02-27 Louis F Porter Elongated flexible tubular explosive
US2936708A (en) * 1957-02-21 1960-05-17 Randel Tool Company Inc Detonative element of apparatus for sinking wells by means of explosive charges
DE2046372A1 (en) * 1970-09-19 1972-03-23 Dynamit Nobel Ag, 5210 Troisdorf Hollow charge - with conical shaper kept in charge contact by springs and adhesive intermediate layer
FR2406798A1 (en) * 1977-10-18 1979-05-18 Messerschmitt Boelkow Blohm HOLLOW LOAD IN THE FORM OF A REVOLUTION BODY
EP0378749A1 (en) * 1989-01-19 1990-07-25 Rheinmetall GmbH Apparatus for fastening the liner of a hollow charge or a charge making a projectile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1363103A1 (en) 2002-05-16 2003-11-19 Giat Industries Shaped charge and assembly method therefore
FR2839777A1 (en) 2002-05-16 2003-11-21 Giat Ind Sa SHAPED LOAD AND METHOD FOR MOUNTING SUCH FORMED LOAD
WO2019002219A1 (en) 2017-06-28 2019-01-03 Nexter Munitions Shaped charge

Also Published As

Publication number Publication date
EP0491587B1 (en) 1995-06-21
EP0491587A1 (en) 1992-06-24
DE69110634T2 (en) 1996-02-08
FR2669721B1 (en) 1993-01-08
DE69110634D1 (en) 1995-07-27

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