EP0154580B1 - Zündverzögerung für Sprengköpfe mit hintereinanderliegenden Hohlladungen - Google Patents

Zündverzögerung für Sprengköpfe mit hintereinanderliegenden Hohlladungen Download PDF

Info

Publication number
EP0154580B1
EP0154580B1 EP85400249A EP85400249A EP0154580B1 EP 0154580 B1 EP0154580 B1 EP 0154580B1 EP 85400249 A EP85400249 A EP 85400249A EP 85400249 A EP85400249 A EP 85400249A EP 0154580 B1 EP0154580 B1 EP 0154580B1
Authority
EP
European Patent Office
Prior art keywords
initiation
screen
charge
retarder
delay
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
Application number
EP85400249A
Other languages
English (en)
French (fr)
Other versions
EP0154580A1 (de
Inventor
Alain Kerdraon
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.)
Cessione giat Industries
Original Assignee
Delegation Generale pour lArmement
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 Delegation Generale pour lArmement filed Critical Delegation Generale pour lArmement
Publication of EP0154580A1 publication Critical patent/EP0154580A1/de
Application granted granted Critical
Publication of EP0154580B1 publication Critical patent/EP0154580B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes
    • 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
    • F42B12/16—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 in combination with an additional projectile or charge, acting successively on the target
    • F42B12/18—Hollow charges in tandem arrangement

Definitions

  • the present invention relates to an initiation delay for a military head comprising two formed charges mounted in tandem and initiated successively. The front charge is initiated first, then with a pre-determined delay, the rear charge detonates.
  • Delay of a few hundred microseconds could be carried out without problem by a winding of detonating cord, but for a delay time greater than 0.5 ms, the length of ring used becomes prohibitive. Indeed, it is necessary to use 3.5 m of cord for a delay of 0.5 ms or 10.5 m for 1.5 ms. These long lengths pose a major problem due to their large size.
  • the prevet US-A-4 004 515 describes a military head made up of two charges mounted in tandem. It comprises a formed rear chage and a frustoconical front load provided with a hole at its top; these two charges are separated by a tube and a plate which is not a screen.
  • the rear load is first initiated, because it is the main load of the system and it generates a perforation jet through the tube. The rear part of the jet interferes with the tube, causing the plate to move.
  • the impact of this plate on the front load causes its initiation to produce a second hollow charge jet after a delay of 30 to 50 ms, a delay which is incompatible with the requirements of the invention.
  • the patent FR-A-1 091 932 describes a conventional device for initiating a hollow charge comprising, inter alia, a piezoelectric element whose deformation on impact generates an initiating current of the initiating composition. It is therefore a deformation in contact with the target itself.
  • the invention therefore aims to overcome the drawbacks of the state of the art by proposing a device for delay congestion reduced and high precision.
  • the invention consists in using the known screen arranged between the two charges to achieve the delay. Indeed, it has been shown that it is necessary to use a protective structure or screen to ensure the protection of the rear load when the front load is operating. It was found that this screen, under the action of the detonation of the first charge, moves towards the rear of the military head and possibly deforms. The invention therefore consists in taking advantage of the displacement of this screen to ensure the delay in operation of the rear load.
  • the subject of the invention is therefore an initiation delay for a military head comprising a front formed charge and a rear formed charge mounted in tandem, the rear charge being initiated after a predetermined delay relative to the initiation of the front charge, a electrical circuit for initiating the rear charge and a screen arranged between the two charges and movable towards the rear in a final position under the effect of the detonation of the front charge, characterized in that it is constituted by the screen itself, the travel time between its initial position and its final position defines the initiation delay, the screen controlling during its movement the closing of the electrical circuit.
  • the screen comprises an electrically conductive part cooperating with contactors to ensure, during its passage to the final position, the closing of the electrical circuit.
  • the screen impacts, during its passage to the final position, a piezoelectric device delivering an electrical control signal necessary for the initiation of the rear load.
  • the piezoelectric device consists of piezoelectric pellets arranged annularly around the periphery of the military head.
  • the screen is made of magnetic material and passes during its passage to the second position, a coil generating an electrical control signal necessary for the initiation of the rear load.
  • the initiation delay is between 0.5 and 3 ms.
  • the military head shown in FIG. 1 comprises a charge formed before 1 of the flat charge type and a charge formed rear 2 of the hollow charge type.
  • the two charges are arranged in a fragmentable shell 3.
  • a screen 4 is placed between the two charges formed so as to protect the rear charge during the detonation of the front charge.
  • the initiation of the two charges formed is done via priming systems 5 known to those skilled in the art.
  • contactors 6 are arranged between the screen 4 and the rear load 2. These contactors are connected, by means of electrical lines 7 and 8 to a source of electrical energy 9 and to the rear load initiator.
  • the screen moves towards the rear of the military head and strikes the contactors 6 which close the electrical circuit and ensures the operation of the device for initiating the rear load.
  • FIG. 2 represents a variant of FIG. 1, in this case, the contactors 6 are replaced by piezoelectric elements 10 which, upon impact by the screen 4, deliver an electrical control signal which can be used either directly to initiate the device for initiating the rear load , either indirectly to initiate a known electronic system, the role of which is to supply energy to the ignition device by an additional source of electricity.
  • FIG. 3 represents a military head comprising an induction coil 11 disposed between the rear load and the screen 4.
  • the screen is made up of a magnetic material and induces an electric current when it crosses the coil 11. This current, as in the case shown in the previous figure, can be used directly or indirectly to initiate the rear load.
  • the displacement of the screen must remain less than the initial distance between screen and rear load during the time interval which separates the two firings.
  • the speed of the screen is 24 m / s; thus for a desired delay of 1 ms, the screen will have to move 24 mm to ensure the operation of the rear load.
  • An advantage of this device lies in the fact that the phenomenon of screen 4 recoil is very reproducible, which makes it possible to obtain delay times of high precision.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Bags (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Pinball Game Machines (AREA)

Claims (6)

1. Zündverzögerung für Sprengköpfe mit einer vorderen Ladung (1) und einer hinteren Ladung (2) in Tandemanordnung, wobei die hintere Ladung im Vergleich zur Zündung der vorderen Ladung nach einer vorbestimmten Frist gezündet wird, mit einem elektrischen Zündkreis (6, 7, 8, 9) für die hintere Ladung (2) und mit einer zwischen den beiden Ladungen angeordneten Trennwand (4), die unter der Einwirkung der Detonation der vorderen Ladung (1) nach hinten in eine Endstellung gebracht werden kann, dadurch gekennzeichnet, dass sie von der Trennwand (4) selbst gebildet wird, deren Laufzeit zwischen ihrer Ausgangsstellung und ihrer Endstellung die Zündzeit definiert, wobei die Trennwand (4) während ihrer Verschiebung die Schliessung des Stromkreises (6, 7, 8, 9) steuert.
2. Zündvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Trennwand (4) einen stromleitenden Teil umfasst, der mit Arbeitskontakten (6) zusammenwirkt, um bei ihrer Verschiebung in die Endstellung die Schliessung des Stromkreises zu gewähren.
3. Zündvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Trennwand (4) während ihrer Verschiebung in die Endstellung auf eine piezoelektrische Vorrichtung (10) schlägt, die ein für die Zündung der hinteren Ladung (2) erforderliches elektrisches Steuersignal liefert.
4. Zündvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die piezoelektrische Vorrichtung (10) aus piezoelektrischen Scheiben besteht, die ringförmig auf dem äusseren Umfang des Sprengkopfes angeordnet sind.
5. Zündvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Trennwand (4) aus magnetischem Werkstoff besteht und bei ihrer Verschiebung in die zweite Stellung eine Spule (11) durchtritt, die ein für die Zündung der hinteren Ladung (2) erforderliches elektrisches Steuersignal liefert.
6. Zündvorrichtung nach einem der vorstehenden Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Zündzeit zwischen 0,5 und 3 ms beträgt.
EP85400249A 1984-02-20 1985-02-14 Zündverzögerung für Sprengköpfe mit hintereinanderliegenden Hohlladungen Expired EP0154580B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8402487 1984-02-20
FR8402487A FR2559896B1 (fr) 1984-02-20 1984-02-20 Retard d'initiation pour tete militaire a charges formees montees en tandem

Publications (2)

Publication Number Publication Date
EP0154580A1 EP0154580A1 (de) 1985-09-11
EP0154580B1 true EP0154580B1 (de) 1988-01-07

Family

ID=9301165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400249A Expired EP0154580B1 (de) 1984-02-20 1985-02-14 Zündverzögerung für Sprengköpfe mit hintereinanderliegenden Hohlladungen

Country Status (5)

Country Link
US (1) US4606272A (de)
EP (1) EP0154580B1 (de)
CA (1) CA1268663A (de)
DE (1) DE3561364D1 (de)
FR (1) FR2559896B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135392A1 (de) * 1991-10-26 1993-04-29 Deutsche Aerospace Gefechtskopf

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605580C1 (de) * 1986-02-21 1987-06-04 Messerschmitt Boelkow Blohm Gefechtskopf
GB8620138D0 (en) * 1986-08-19 1994-01-26 British Aerospace Projectile warhead
FR2603375B1 (fr) * 1986-08-26 1990-07-27 Matra Manurhin Defense Munition a charges en tandem
IL81097A (en) * 1986-12-25 1991-06-10 Israel Defence Two-stage shaped charge projectile
US5033382A (en) * 1987-03-25 1991-07-23 Magnavox Government And Industrial Electronics Company Piezoelectric fuse for projectile with safe and arm mechanism
US4793256A (en) * 1987-03-25 1988-12-27 Magnavox Government And Industrial Electronics Company Piezoelectric fuse for projectile with safe and arm mechanism
DE3740412C1 (de) * 1987-11-28 1996-04-25 Rheinmetall Ind Gmbh Gefechtskopf
US7493861B1 (en) * 1989-07-24 2009-02-24 The United States Of America As Represented By The Secretary Of The Army Tandem shaped charge warhead having a confined forward charge and a light-weight blast shield
FR2660427B1 (fr) * 1990-03-29 1993-12-31 Giat Industries Retard d'initiation pour charges formees detonant en sequence.
FR2729750B1 (fr) * 1990-03-29 1997-03-21 France Etat Tete militaire a charges creuses en sequence
DE4130646C2 (de) * 1990-09-28 2000-02-03 Dynamit Nobel Ag Verfahren zum Auslösen eines Explosivkörpers
US5565647A (en) * 1991-05-24 1996-10-15 Giat Industries Warhead with sequential shape charges
US5111746A (en) * 1991-06-21 1992-05-12 The United States Of America As Represented By The Secretary Of The Army Multiple stage munition
DE4126793C1 (de) * 1991-08-14 1994-05-11 Deutsche Aerospace Tandemgefechtskopf
DE4240084A1 (de) * 1992-11-28 1994-06-01 Dynamit Nobel Ag Tandemgefechtskopf mit piezoelektrischen Aufschlagzündern
FR2718842B1 (fr) * 1994-04-15 1996-06-28 Luchaire Defense Sa Projectile destiné à agresser des cibles dures.
US5526752A (en) 1994-09-06 1996-06-18 Rockwell International Corporation Weapon for destruction of deeply buried and hardened targets
DE19540863B3 (de) * 1995-11-02 2013-12-05 Nexter Munitions Zündvorrichtung
SE9601114L (sv) * 1996-03-22 1997-07-14 Bofors Ab Ammunitionsanordning i form av granat eller liknande
DE19706688C1 (de) * 1997-02-20 1998-09-24 Daimler Benz Aerospace Ag Gefechtskopf mit einem Vorwirkkörper und einem Nachwirkkörper
US6305289B1 (en) * 1998-09-30 2001-10-23 Western Atlas International, Inc. Shaped charge for large diameter perforations
RU2406059C1 (ru) * 2009-07-14 2010-12-10 Государственное унитарное предприятие "Конструкторское бюро приборостроения" Граната
FR2953009A1 (fr) 2009-11-26 2011-05-27 Nexter Munitions Tete militaire a charges en tandem
US9612095B2 (en) * 2014-12-12 2017-04-04 Schlumberger Technology Corporation Composite shaped charges
DE102023000642B3 (de) 2023-02-22 2024-01-25 Bundesrepublik Deutschland, vertr. durch das Bundesministerium der Verteidigung, vertr. durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr Gefechtskopf mit einer Vorhohlladung und einer Haupthohlladung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA731987A (en) * 1966-04-12 Jersey Production Research Company Well perforating
BE526010A (de) * 1953-01-27
US3320890A (en) * 1965-05-06 1967-05-23 Thomas Q Ciccone Piezo-electric detonation initiator system
BE740812A (de) * 1969-10-27 1970-07-27
US4004515A (en) * 1971-01-25 1977-01-25 The United States Of America As Represented By The Secretary Of The Navy Sequential jet shaped charge
FR2365774A1 (fr) * 1976-09-27 1978-04-21 Serat Perfectionnements aux chargements des projectiles
FR2410243A1 (fr) * 1977-11-24 1979-06-22 Serat Perfectionnements apportes aux charges creuses
DE2847548C2 (de) * 1978-11-02 1983-03-03 Diehl GmbH & Co, 8500 Nürnberg Elektrischer Geschoßzünder
DE3165351D1 (en) * 1980-05-09 1984-09-13 Emi Ltd Arrangements for igniting a pyrotechnic charge
US4402269A (en) * 1981-06-29 1983-09-06 The United States Of America As Represented By The Secretary Of The Navy Electric delay detonator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135392A1 (de) * 1991-10-26 1993-04-29 Deutsche Aerospace Gefechtskopf

Also Published As

Publication number Publication date
CA1268663A (fr) 1990-05-08
US4606272A (en) 1986-08-19
DE3561364D1 (en) 1988-02-11
FR2559896A1 (fr) 1985-08-23
EP0154580A1 (de) 1985-09-11
FR2559896B1 (fr) 1987-09-25

Similar Documents

Publication Publication Date Title
EP0154580B1 (de) Zündverzögerung für Sprengköpfe mit hintereinanderliegenden Hohlladungen
EP0010487B1 (de) Treibladungsanzünder mit einem Glühdraht
US4665826A (en) Hybrid explosive unit
US4111126A (en) Warhead for use against armored targets
FR2545923A1 (fr) Projectile assurant le percage des blindages
EP0221218A1 (de) Sprengkopf mit hintereinanderliegenden Hohlladungen
FR3017205A1 (fr) Charge creuse et application pour la separation de deux etages d'un engin aeronautique ou sa neutralisation
FR2483160A5 (fr) Dispositif de declenchement a sensibilite preetablie pour amorcage electrique de mine
EP0474855B1 (de) Zündverzögerung für hohlladungen mit aufeinanderfolgenden detonation
USH1366H (en) SCB initiator
FR2771499A1 (fr) Dispositif de declenchement de l'allumage d'un projectile anti-abri
FR2903770A1 (fr) Sandwich electromagnetique
EP1767894B1 (de) Im Innern eines Flugkörpers angebrachte Plasmaentladungen erzeugende Vorrichtung zur Steuerung eines supersonischen oder hypersonischen Flugkörpers
EP0296962A1 (de) Anzünder für einen pyrotechnischen Generator
FR2643142A1 (fr) Canon a tir unique avec dispositif d'acceleration electromagnetique
FR2612706A1 (fr) Source impulsionnelle de courant electrique et canon electromagnetique en faisant application
FR2601763A1 (fr) Projectile sous-calibre de type fleche pour blindages actifs
EP0548433B1 (de) Piezoelektrische Abfeuereinrichtung zur Aktivierung eines elektrischen Zünders mit Widerstandsdraht
RU2131581C1 (ru) Способ защиты боевой части тандемного боеприпаса и тандемный боеприпас
EP1521053A1 (de) Anti-Bunker Munition
FR2792717A1 (fr) Projectile a charge creuse comportant un ecran, a encombrement reduit
EP0303539A1 (de) Zündkreisauswahl- und Betätigungseinrichtung
FR2867848A1 (fr) Dispositif d'initiation de deux charges explosives et tete militaire mettant en oeuvre un tel dispositif d'initiation
EP0113270B1 (de) Anordnung zum Zünden einer Ladung mittels radial gerichteter Detonationswelle
FR2776372A1 (fr) Obus perforant anti structures betonnees et dispositif de conversion permettant d'obtenir un tel obus perforant a partir d'un obus explosif

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19850221

AK Designated contracting states

Designated state(s): DE GB IT

17Q First examination report despatched

Effective date: 19860527

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3561364

Country of ref document: DE

Date of ref document: 19880211

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;GIAT INDUSTRIES

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020212

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030124

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030902

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040214

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040214