EP0977005B1 - Anzündvorrichtung für ein explosives Geschoss - Google Patents

Anzündvorrichtung für ein explosives Geschoss Download PDF

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Publication number
EP0977005B1
EP0977005B1 EP99113226A EP99113226A EP0977005B1 EP 0977005 B1 EP0977005 B1 EP 0977005B1 EP 99113226 A EP99113226 A EP 99113226A EP 99113226 A EP99113226 A EP 99113226A EP 0977005 B1 EP0977005 B1 EP 0977005B1
Authority
EP
European Patent Office
Prior art keywords
plate
relay
shell
explosive
load
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
EP99113226A
Other languages
English (en)
French (fr)
Other versions
EP0977005A1 (de
Inventor
Regis Aumasson
Sylvain Jayet
Jean-Paul Matthiau
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 EP0977005A1 publication Critical patent/EP0977005A1/de
Application granted granted Critical
Publication of EP0977005B1 publication Critical patent/EP0977005B1/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
    • F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
    • F42B12/201—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type characterised by target class
    • F42B12/204—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type characterised by target class for attacking structures, e.g. specific buildings or fortifications, ships or vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/0838—Primers or igniters for the initiation or the explosive charge in a warhead

Definitions

  • the technical field of the invention is that of initiating devices for explosive shells.
  • An explosive shell is generally made up of a metal casing containing an explosive charge by example of TNT (trinitrotoluene or tolite).
  • TNT trinitrotoluene or tolite
  • a known initiating device is shown in the figure 1.
  • the rocket includes a rocket 1 which is screwed to the casing 2 a shell 3 via a connection cup 7.
  • the rocket includes a detonation relay 4 (for example a hexogen / wax composition) which is intended to initiate a priming relay load 5, interposed between relay 4 and an explosive charge 6 filling the envelope with the shell.
  • the priming relay load is also made up by an explosive.
  • the priming relay load is placed in well 7 metallic which carries a thread 7a allowing its fixing by screwing on the shell 2 of the shell.
  • Bucket 7 carries also a tapping 7b intended to receive the rocket 1.
  • connection cup 7 is permanently fixed to the shell body during the storage phases.
  • connection cup is also expensive because long and thin-walled. This results in a increased cost of the shell.
  • US Pat. No. 4,735,145 taken as the basis for the preamble of the first claim, describes a detonator consisting of a first donor explosive charge initiated by a source of heat which projects a plate onto a lid which initiates a second charge by anvil effect.
  • the priming device according to the invention allows reduce the cost of the shell while increasing the mass of the explosive charge.
  • the subject of the invention is a priming device for an explosive shell having an explosive charge disposed in an envelope and including a rocket initiating a relay detonation device with an interposed plate between the explosive charge and the detonation relay, plate intended to be projected during the initiation of the relay on the explosive charge in order to cause the detonation thereof, device characterized in that the plate is integral with a support ring carrying a thread allowing its connection to the shell of the shell and a thread allowing the fixing of the rocket.
  • the plate may include at least one circular groove ensuring a reduction in its thickness.
  • the plate may include at least two concentric circular grooves.
  • the plate will preferably be made of a material metallic with a density greater than or equal to 7.8, for example in steel.
  • a priming device comprises a connecting ring 10 which has a thread 10a allowing its fixing by screwing on the shell 2 of the shell and a tapping 10b intended for receive the rocket 1.
  • the connecting ring has a bottom constituting a plate 11 which is interposed between the explosive charge 6 and detonation relay 4.
  • This plate 11 carries two circular grooves concentric 12a, 12b (see Figure 3) which provide a decrease in thickness.
  • the plate (like the ring 10 which forms a single part with it) is made of steel. Its thickness is About 1 mm. The mass of the plate must be sufficient to that its kinetic energy ensures the initiation of loading explosive. Any other material with a density higher than that steel (7.8) may be suitable.
  • the dimensions of the ring 10 are chosen so that that there remains between the relay 4 and the plate 11 a clearance between 1 and 3 mm.
  • the plate will also be found after mounting at a distance from the upper surface 13 of the explosive charge on the order of 5 to 15 mm.
  • the rocket 1 provokes at an instant determined on the trajectory of the shell (chronometric rocket or near) or on impact on a target (rocket impactful), the initiation of detonation relay 4 by a primer (not shown).
  • the detonation wave generated by relay 4 causes the projection of the plate 11 on the surface 13 of the load explosive 6.
  • the two grooves 12a, 12b by locating precisely rupture zones of the plate 11, allow the device to work perfectly, even with variations in radial and longitudinal positions of the priming of the rocket (internal primer to the rocket initiating relay 4 and not shown here) relative to the shell axis respectively and to the upper surface 13 of the explosive charge.
  • a partial detonation of relay 4 will cause the projection of the central part of the delimited plate 11 only through the internal groove 12b.
  • the energy delivered by a conventional relay 4 comprising for example 23 g of a composition of the graphite Hexocire type suffices to cut the plate 11 at the primers of breaks 12a, 12b and to project it on load 6 with enough energy to initiate this one.
  • the device according to the invention has numerous benefits.
  • a reduction in the manufacturing cost is achieved by elimination of machining of the upper face of the load explosive. The latter can thus be left untreated.
  • the reinforcing relay is removed which reduces also the cost of the shell.
  • connection ring 10 is simpler to produce and less expensive than bucket 7 according to the prior art.
  • the tightness of the shell is improved, so its resistance to storage. Indeed the stored shell (without the rocket) is perfectly closed by plate 11 which is a single part with the ring 10 which is otherwise connected so waterproof (by a seal 14 arranged between the end of the envelope and the ring 10) to the envelope.
  • the known shells were to receive additional protection to isolate the booster 5 from humidity.
  • the positioning tolerances of the plate 11 by relative to the upper surface 13 of the explosive charge 6 and compared to relay 4 are wide (of the order of 10mm) which also reduces manufacturing costs and contributes the reliability of priming.
  • the presence of the two gorges 12a, 12b overcomes the dispersions relating to detonic characteristics of rocket relays of trade.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Air Bags (AREA)
  • Toys (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (4)

  1. Zündvorrichtung für eine Sprenggranate, die eine, in einer Hülle angeordnete, Explosivladung besitzt und einen Zünder (1) zum Auslösen eines Detonationsrelais (4) umfasst, wobei die Vorrichtung eine zwischen der Explosivladung (6) und dem Detonationsrelais (4) angeordnete Platte (11) aufweist, wobei die Platte dafür vorgesehen ist, bei der Auslösung des Relais (4) auf die Explosivladung (6) geschleudert zu werden, um deren Detonation zu bewirken, wobei die Vorrichtung dadurch gekennzeichnet ist, dass die Platte (11) fest mit einem Tragring (10) verbunden ist, welcher ein Gewinde, das die Verbindung mit der Hülle (2) der Granate ermöglicht, und ein Innengewinde trägt, welches die Befestigung des Zünders (1) erlaubt.
  2. Zündvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Platte (11) wenigstens eine kreisförmige Auskehlung (12) umfasst, die eine Verminderung ihrer Stärke gewährleistet.
  3. Zündvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Platte (11) wenigstens zwei kreisförmige, konzentrische Auskehlungen (12a, 12b) umfasst.
  4. Zündvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Platte (11) aus einem metallischen Material mit einer Dichte größer oder gleich 7,8, zum Beispiel aus Stahl, ausgeführt wird.
EP99113226A 1998-07-30 1999-07-08 Anzündvorrichtung für ein explosives Geschoss Expired - Lifetime EP0977005B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9809819 1998-07-30
FR9809819A FR2781877A1 (fr) 1998-07-30 1998-07-30 Dispositif d'amorcage pour obus explosif

Publications (2)

Publication Number Publication Date
EP0977005A1 EP0977005A1 (de) 2000-02-02
EP0977005B1 true EP0977005B1 (de) 2003-05-02

Family

ID=9529244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99113226A Expired - Lifetime EP0977005B1 (de) 1998-07-30 1999-07-08 Anzündvorrichtung für ein explosives Geschoss

Country Status (5)

Country Link
EP (1) EP0977005B1 (de)
AT (1) ATE239205T1 (de)
DE (1) DE69907334T2 (de)
ES (1) ES2196679T3 (de)
FR (1) FR2781877A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2864219B1 (fr) 2003-12-22 2006-02-24 Giat Ind Sa Dispositif de deconfinement d'une enveloppe de munition
FR2906606B1 (fr) * 2006-09-29 2010-12-31 Giat Ind Sa Dispositif de deconfinement d'une enveloppe d'une munition.
DE102007016488B3 (de) * 2007-04-05 2009-01-22 Diehl Bgt Defence Gmbh & Co. Kg Penetrationsfähiges Geschoss

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4735145A (en) * 1987-03-02 1988-04-05 The United States Of America As Represented By The United States Department Of Energy High temperature detonator
US5229542A (en) * 1992-03-27 1993-07-20 The United States Of America As Represented By The United States Department Of Energy Selectable fragmentation warhead

Also Published As

Publication number Publication date
EP0977005A1 (de) 2000-02-02
DE69907334D1 (de) 2003-06-05
ES2196679T3 (es) 2003-12-16
ATE239205T1 (de) 2003-05-15
DE69907334T2 (de) 2004-02-19
FR2781877A1 (fr) 2000-02-04

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