EP0857938B1 - Hohlladung mit Verbindungsmittel zwischen der Anlage und der Hülle - Google Patents

Hohlladung mit Verbindungsmittel zwischen der Anlage und der Hülle Download PDF

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Publication number
EP0857938B1
EP0857938B1 EP98400084A EP98400084A EP0857938B1 EP 0857938 B1 EP0857938 B1 EP 0857938B1 EP 98400084 A EP98400084 A EP 98400084A EP 98400084 A EP98400084 A EP 98400084A EP 0857938 B1 EP0857938 B1 EP 0857938B1
Authority
EP
European Patent Office
Prior art keywords
charge
rear plate
casing
cylindrical surface
attachment means
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
EP98400084A
Other languages
English (en)
French (fr)
Other versions
EP0857938A1 (de
Inventor
Patrick Sabathier
Jean Marie Montigny
Thierry Soulat
Jean Luc Renaud-Bezot
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
Original Assignee
Giat Industries 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 Giat Industries SA filed Critical Giat Industries SA
Publication of EP0857938A1 publication Critical patent/EP0857938A1/de
Application granted granted Critical
Publication of EP0857938B1 publication Critical patent/EP0857938B1/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
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/028—Shaped or hollow charges characterised by the form of the liner
    • 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 fillers nucleus generators.
  • These charges generally include a charge explosive placed in an envelope and a coating having overall the shape of a spherical cap.
  • the coating When the explosive detonates, the coating is set in motion by the incident pressure wave. It is deforms by turning "in a glove", that is to say that it turns into a projectile (or nucleus) whose front part is formed by the axial area of the covering and the rear part is a skirt formed by the periphery of the coating.
  • Patent FR2627580 describes such a charge.
  • Patent US4922825 which serves as the basis for the preamble of the main claim, also describes a charge core generator whose coating consists of two overlapping plates.
  • the coating material is a ductile material or a material for which the formation of nucleus is disturbed by the presence of local constraints on the coating.
  • the core generating charges are subject, during the storage phases, thermal constraints which cause dilations with different amplitudes for the explosive charge and for the metal shell.
  • the coating of the filler according to the invention is thus fixed in a simple and rigid way without resulting disruption of nucleus formation.
  • the fixing means according to the invention allow also to control the formation of peripheral fins on the rear part of the core, which improves stability aerodynamics of this one.
  • the subject of the invention is a charge formed nucleus generator with explosive charge placed in an envelope and to which is applied a coating intended to be set in motion by the detonation explosive, the coating comprising at least two plates, a back plate which is in contact with the explosive charge and at least one front tackle charge characterized in that the back plate is made integral of the envelope by connecting means arranged between a cylindrical peripheral surface of the back plate and a inner cylindrical surface of the casing, the front plate being made integral with the back plate by gluing.
  • each connecting means will include a initiation of rupture and / or will delimit a zone of rupture on the back plate. Such a provision will facilitate the separation of the coating and the load envelope during nucleus formation.
  • the charge will preferably comprise at least three means regularly distributed angularly around the load axis.
  • each means of connection consists of a screw arranged radially by relative to the axis of the load, screw passing through the envelope load and one end of which enters a fitted accommodation on the outer cylindrical surface of the back plate.
  • each means of connection consists of a ball placed in a bore radial of the envelope and which cooperates with an imprint arranged on the external cylindrical surface of the plate back.
  • each means of connection is constituted by a cylindrical pin, or a piano wire, the axis of which is both perpendicular to the load axis and tangent to the cylindrical surface outer of the back plate, pin which cooperates with a first impression made on the cylindrical surface back plate external and with a second imprint produced on the internal cylindrical surface of the envelope.
  • each means of connection consists of an elastic clip placed in a housing fitted on the periphery of the back plate, clip having a deformable spout which is intended to penetrate into a groove arranged on the internal cylindrical surface of the envelope so as to ensure the axial joining of the first plate and load envelope.
  • the back plate will preferably be made in aluminum or aluminum alloy.
  • a charge generating core 1 comprises in known manner a cylindrical envelope 2 inside which is placed an explosive charge 3 to which a metal coating 4.
  • the explosive charge is intended to be initiated by ignition means of known type and not shown here.
  • the coating 4 here comprises at least two plates, one back plate 5 and a front plate 7.
  • the back plate 5 is in contact with the load explosive 3 and it is made integral with the envelope 2 by connecting means.
  • the front plate 7 is made integral with the plate back by gluing.
  • the connecting means are constituted here by four screws 6 regularly distributed angularly and which are housed in radial threads 9 arranged on the casing 2.
  • Each screw has a conical end 6a which enters a additional conical housing 8 arranged on a surface cylindrical device of the back plate 5.
  • the plates rear 5 and front 7 of the coating are deformed by the shock wave which is communicated by the explosive.
  • the conical housings 8 weaken the rear plate which breaks at the level of the connection means.
  • the connecting means 6 coatings do not disturb the formation of the nucleus generated by the front plate 7, no obstacle being placed in front of the covering.
  • the back plate 5 also prevents the formation of gas leaks at the periphery of the front plate when its setting in speed. It then becomes possible to define a coating whose front plate has a very peripheral zone thin without gas leakage problems or coating attachment problems.
  • the back plate 5 finally immobilizes the explosive charge 3 in relation to enclosure 2.
  • the front plate 7 is only subject to its own inertial forces which are balanced by bonding the front plate to the plate back.
  • metal back plate 5 for example in a light alloy such as an aluminum alloy.
  • This backplate does not significantly participate in the target's perforation and the disturbances it receives at the level of its skirt, as a result of the presence of means of connection, do not affect the effectiveness of the charge.
  • the front plate 7 is intended to generate the core which has a perforating efficiency, it will be achieved for example by iron or tantalum.
  • connection means regularly distributed angularly to generate three fins on the core.
  • Figure 2 thus shows an embodiment in which the connecting means consist of balls 10 in steel which are placed during the assembly of the load in radial bores 11 arranged on the envelope.
  • the balls 10 cooperate with spherical impressions 12 carried by the external cylindrical surface of the plate rear 5, which is thus weakened by the presence of fingerprints.
  • the balls thus constitute interposed obstacles between the back plate 5 of the covering and the casing 2 of load.
  • Each ball is held axially in its bore by a threaded plug 13.
  • Figures 3a and 3b show a third mode of embodiment in which the connecting means are constituted by three cylindrical pins 14 (or three sections of piano string).
  • each pin is both perpendicular to the axis 15 of the load (in projection) and tangent to the external cylindrical surface of the back plate 5.
  • Each pin 14 cooperates with a first imprint 17 arranged on the external cylindrical surface of the plate rear 5 (and which weakens it locally) and with a second impression 18 made on the cylindrical surface inner envelope 2.
  • FIG. 4a shows a fourth embodiment in which the connecting means are constituted by three clips elastic bands 19, made for example of spring steel.
  • Each clip has a spout 19a and a heel 19b which are connected by a flexible portion 19c.
  • the spout 19a is intended to enter a groove 20 fitted on the internal cylindrical surface of the casing 2.
  • Each clip 19 is positioned in a housing 21 fitted on the periphery of the back plate 5 (and which delimits thus a rupture zone on this plate).
  • Each housing 21 has a clearance 22 which is intended to receive the beak of the clip 19 when the latter deforms when fitting the back plate in the bore of the casing 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Claims (8)

  1. Kernbildende Ladung (1) bestehend aus einer in eine Umhüllung (2) eingebrachten Sprengladung (3) und einer auf der Sprengladung angebrachten Verkleidung (4), welche durch die Detonation in Bewegung gesetzt werden soll, wobei die Verkleidung aus mindestens zwei Platten besteht, einer hinteren Platte (5) in Berührung mit der Sprengladung, und mindestens einer vorderen Platte (7), dadurch gekennzeichnet, dass die hintere Platte mit der Umhüllung (2) durch Verbindungsmittel (6, 10, 14, 19) solidarisiert wird, welche zwischen einer zylindrischen Fläche auf der Peripherie der hinteren Platte (5) und einer zylindrischen inneren Fläche der Umhüllung (2) eingebracht werden, während die vordere Platte (7) mit der hinteren Platte (5) durch einen Kleber solidarisiert wird.
  2. Kernbildende Ladung nach Anspruch 1, dadurch gekennzeichnet, dass sich auf jedem der Verbindungsmittel (6, 10, 14, 19) ein Bruchansatz und/oder ein Reißbereich auf der hinteren Platte (5) befindet.
  3. Kernbildende Ladung nach irgendeinem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass sie mindestens drei-in regelmäßigen Winkelabständen um die Mittellinie (15) der Ladung verteilte Verbindungsmittel (6, 10, 14, 19) besitzt.
  4. Kernbildende Ladung nach Anspruch 3, dadurch gekennzeichnet, dass jedes Verbindungsmittel aus einer die Umhüllung (2) der Ladung durchbrechenden Schraube (6) besteht, die radial zur Mittellinie der Ladung angebracht ist, und deren Spitze in eine Bohrung (8) auf der zylindrischen Außenfläche der Hinterplatte (5) eindringt.
  5. Kernbildende Ladung nach Anspruch 3, dadurch gekennzeichnet, dass jedes Verbindungsmittel aus einer in einer radial auf der Umhüllung (2) angebrachten Bohrung (11) eingelagerte Kugel (10) besteht, welche mit einer Vertiefung (12) auf der zylindrischen Außenfläche der Hinterplatte (5) kooperiert.
  6. Kernbildende Ladung nach Anspruch 3, dadurch gekennzeichnet, dass jedes Verbindungsmittel aus einem Zylinderstift (14) oder einer Stahlsaite besteht, dessen/deren Mittellinie gleichzeitig senkrecht zu der Mittellinie der Ladung und tangierend zu der zylindrischen Außenfläche der Hinterplatte (5) verläuft, wobei dieser Stift mit einer Vertiefung (17) in der zylindrischen Außenfläche der Hinterplatte (5) und einer entsprechenden Vertiefung (18) in der zylindrischen Innenfläche der Umhüllung kooperiert.
  7. Kernbildende Ladung nach Anspruch 3, dadurch gekennzeichnet, dass jedes Verbindungsmittel aus einem elastischen, in einer Aufnahme (21) auf der Peripherie der Hinterplatte (5) sitzenden Clip (19) besteht, dieser Clip besitzt einen verformbaren, in eine auf der zylindrischen Innenfläche der Umhüllung angebrachten Rille (20) eindringenden Schnabel (19a), und stellt hiermit die axiale Solidarisierung der ersten Platte (5) mit der Umhüllung (2) der Ladung her.
  8. Kernbildende Ladung nach irgendeinem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Hinterplatte (5) in Aluminium oder Aluminiumlegierung hergestellt wird.
EP98400084A 1997-02-06 1998-01-16 Hohlladung mit Verbindungsmittel zwischen der Anlage und der Hülle Expired - Lifetime EP0857938B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9701340A FR2759158B1 (fr) 1997-02-06 1997-02-06 Charge generatrice de noyau comportant des moyens de liaison du revetement et de l'enveloppe
FR9701340 1997-02-06

Publications (2)

Publication Number Publication Date
EP0857938A1 EP0857938A1 (de) 1998-08-12
EP0857938B1 true EP0857938B1 (de) 2002-07-03

Family

ID=9503387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98400084A Expired - Lifetime EP0857938B1 (de) 1997-02-06 1998-01-16 Hohlladung mit Verbindungsmittel zwischen der Anlage und der Hülle

Country Status (4)

Country Link
US (1) US6035785A (de)
EP (1) EP0857938B1 (de)
DE (1) DE69806279D1 (de)
FR (1) FR2759158B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793314B1 (fr) * 1996-04-02 2002-05-31 Giat Ind Sa Charge generatrice de noyau a performances ameliorees
US6848608B2 (en) * 2002-10-01 2005-02-01 Cabot Corporation Method of bonding sputtering target materials
US20040262157A1 (en) * 2003-02-25 2004-12-30 Ford Robert B. Method of forming sputtering target assembly and assemblies made therefrom
US7159657B2 (en) * 2004-03-24 2007-01-09 Schlumberger Technology Corporation Shaped charge loading tube for perforating gun
US6868791B1 (en) * 2004-04-15 2005-03-22 The United States Of America As Represented By The Secretary Of The Army Single stage kinetic energy warhead utilizing a barrier-breaching projectile followed by a target-defeating explosively formed projectile
FR2885213B1 (fr) 2005-05-02 2010-11-05 Giat Ind Sa Procede de commande d'une munition ou sous-munition, systeme d'attaque, munition et designateur mettant en oeuvre un tel procede
US7856928B1 (en) * 2007-04-23 2010-12-28 Lockheed Martin Corporation Countermine dart system and method
FR3068456B1 (fr) * 2017-06-28 2019-07-19 Nexter Munitions Charge formee

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025794A (en) * 1957-05-15 1962-03-20 Schlumberger Well Surv Corp Perforating apparatus
US4080898A (en) * 1976-02-05 1978-03-28 Gieske Harry A Spiral wrapped shaped charge liners and munition utilizing same
US4747350A (en) * 1984-06-18 1988-05-31 Alexander Szecket Hollow charge
NO862508L (no) * 1985-12-12 1987-06-15 Israel Defence Bombe med formet eller hul ladning.
DE3608198A1 (de) * 1986-03-12 1987-09-17 Rheinmetall Gmbh Sprengladung mit einer projektilbildenden einlage
FR2632394B1 (fr) * 1986-07-24 1990-11-30 France Etat Armement Charge explosive generatrice de noyau
DE3628622C1 (de) * 1986-08-22 1996-08-08 Fraunhofer Ges Forschung Vorrichtung zur Erzeugung sprenggeformter Projektile
FR2627580B1 (fr) 1988-02-18 1993-02-19 France Etat Armement Procede permettant d'obtenir un noyau comportant des ailettes stabilisatrices et charge militaire faisant application
FR2655719B1 (fr) * 1989-12-07 1994-05-06 Etat Francais Delegue Armement Charge explosive engendrant plusieurs noyaux et/ou jets.
DE3941245A1 (de) * 1989-12-14 1991-06-20 Rheinmetall Gmbh Gefechtskopf
FR2740212B1 (fr) * 1995-10-20 1997-12-05 Giat Ind Sa Charge explosive generatrice de noyau

Also Published As

Publication number Publication date
FR2759158A1 (fr) 1998-08-07
US6035785A (en) 2000-03-14
DE69806279D1 (de) 2002-08-08
EP0857938A1 (de) 1998-08-12
FR2759158B1 (fr) 1999-02-26

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