EP0491587B1 - Hohlladung - Google Patents

Hohlladung Download PDF

Info

Publication number
EP0491587B1
EP0491587B1 EP91403189A EP91403189A EP0491587B1 EP 0491587 B1 EP0491587 B1 EP 0491587B1 EP 91403189 A EP91403189 A EP 91403189A EP 91403189 A EP91403189 A EP 91403189A EP 0491587 B1 EP0491587 B1 EP 0491587B1
Authority
EP
European Patent Office
Prior art keywords
enclosure
charge
projectile
hollow
hollow charge
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
EP91403189A
Other languages
English (en)
French (fr)
Other versions
EP0491587A1 (de
Inventor
René Deguin
Hervé Mizzi
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
Publication of EP0491587A1 publication Critical patent/EP0491587A1/de
Application granted granted Critical
Publication of EP0491587B1 publication Critical patent/EP0491587B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a shaped charge.
  • the shaped charges consist essentially of a volume of normally cylindrical explosive, surrounded over 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 metal layer in the form of a conical envelope which constitutes a projectile. When ignited, the envelope undergoes significant centripetal forces which deform it by gradually bringing its material back in the direction of projection, which corresponds to the axis of the hollow charge. The projectile finally becomes a jet of thin and elongated material very effective for piercing armor.
  • a serious problem is linked to the differences in expansion coefficients between the charge, the projectile and the enclosure. During heating or cooling, one obtains either clearances which can cause a malfunction of the charge with the explosion, or stresses in the explosive which can damage it. The shocks to which the enclosure may be subjected are also fully reflected in the explosive.
  • EP-A-0 378 749 and DE-A-2 046 372 describe two hollow charges thus formed and this has as its object an assembly intended to lessen the effects of thermal deformations.
  • US-A-2,936,708 describes a network of small hollow charges retained in plastic sockets linked together.
  • US-A-2,543,057 discloses an explosive charge in a flexible flange surrounded a double rubber sheath.
  • DE-A-3 441 693 describes as DE-A-2 046 372 a hollow charge assembly where the projectile is constrained by a spring or the like in an axial direction against the load.
  • the object of the invention is to eliminate these drawbacks by introducing compressible elements between the constituents of the shaped charge where the problems mentioned above may appear.
  • the invention consists in interposing a layer of compressible material between the load and the enclosure, in a substantially circumferential volume.
  • An improvement consists in inserting a spring between a support flange disposed on the edge of the projectile and a circular stop belonging to the enclosure, in order to obtain an elastic axial mounting between the projectile, the charge and the enclosure.
  • the compressible material is advantageously a thin layer injectable material such as a cold crosslinked polysiloxane elastomer in which hollow microspheres of copolymer of vinylidene chloride and acrylonitrile are dispersed, a body whose structure and manufacturing process have been described in French patent application number 90 10256. If such injectable materials are used, it is advantageous to provide injection holes as well as air vent pipes opposite to these at a suitable location in the hollow charge. holes.
  • Sealing can be completed by circular joints between the projectile and the enclosure or between removable parts constituting the enclosure.
  • the hollow charge comprises an explosive charge 1 of essentially cylindrical shape with the exception of its front face, which is hollowed out according to a conical imprint 2 the apex of which belongs to the axis 3 of the explosive charge 1.
  • This front face is covered with '' 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 envelope 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 the explosive charge 1.
  • a cover 7 is fixed to the rear of 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.
  • a clearance exists between the cylindrical casing 5 and the explosive charge 1.
  • the cylindrical casing 5 projects towards the front of the projectile 4 and its internal face carries a circular stop 8.
  • the projectile 4 has meanwhile, on the edge which corresponds to the open end of the cone, a circular support flange 9 which extends in front of the stop 8.
  • An elastic Belleville washer 10 is compressed between the stop 8 and the support flange 9 and pushes the projectile 4 backwards.
  • Injection holes 11 are formed through the projectile 4 at this location. It is possible to have several holes on the same circumference. They make it possible to inject a compressible material so as to fill the clearance between the cylindrical envelope 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, and care is taken to insert two circular joints 12 and 13 respectively shown in Figures 2 and 3) at the front and rear ends of the shaped charge, between the cylindrical envelope 5 on the one hand, and respectively the support flange 9 and the base 7 on the other hand.
  • venting duct 14 shown in FIG. 3, consists of an angled hole made between the lateral and rear faces of the base 6.
  • a compressible material has the property of being crushed or, on the contrary, of expanding, depending on the thermal expansion and contraction produced on the constituents of the hollow charge in order to keep the internal stresses at a very low level. Its elasticity allows it to return to its original shape as soon as the temperature change stops. No game that could affect the violence of the projection therefore appears, which promises a good quality explosion. Impacts on the enclosure are also absorbed by the compressible material and the spring. Such behavior differs entirely from that of the adhesive layers which already exist in the same place in certain hollow charges to bond the explosive charge 1 to the enclosure.

Landscapes

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

Claims (6)

  1. Hohlladung, umfassend ein konisches Projektil (4), eine Sprengladung (1) auf der konvexen Seite des Projektils, einen die Ladung (1) umgebenden Behälter (5, 6),
    dadurch gekennzeichnet, daß sie eine komprimierbare Materialschicht (15) umfaßt, eingefügt zwischen die Ladung (1) und den Behälter (5).
  2. Hohlladung nach Anspruch 1, dadurch gekennzeichnet, daß sie eine Feder (10) umfaßt, zwischen einem Stützkragen (9) am Rand des Projektils (4) und einem kreisförmigen Anschlag (8) am Behälter (5).
  3. Hohlladung nach Anspruch 2, dadurch gekennzeichnet, daß die Feder (10) ein Belleville-Dichtungsring ist.
  4. Hohlladung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie Einspritzöffnungen (11) für komprimierbares Material aufweist und, den Bohrungen (11) entgegengesetzt, Auslaßleitungen (14) für Luft.
  5. Hohlladung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie Runddichtringe (12, 13) zwischen dem Projektil (4) und dem Behälter (5) oder zwischen den den Behälter bildenden, demontierbaren Teilen (5, 6) umfaßt.
  6. Hohlladung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das komprimierbare Material ein kaltvernetztes Polysiloxan-Elastomer ist, in dem Hohlkugeln aus Acrylnitril- und Vinyldichlorid-Copolymer feinst verteilt sind.
EP91403189A 1990-11-28 1991-11-26 Hohlladung Expired - Lifetime EP0491587B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014873A FR2669721B1 (fr) 1990-11-28 1990-11-28 Charge creuse.
FR9014873 1990-11-28

Publications (2)

Publication Number Publication Date
EP0491587A1 EP0491587A1 (de) 1992-06-24
EP0491587B1 true EP0491587B1 (de) 1995-06-21

Family

ID=9402681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91403189A Expired - Lifetime EP0491587B1 (de) 1990-11-28 1991-11-26 Hohlladung

Country Status (3)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2839777B1 (fr) 2002-05-16 2004-07-02 Giat Ind Sa Charge formee et procede de montage d'une telle charge formee
DE10221759B4 (de) * 2002-05-16 2005-03-31 Diehl Munitionssysteme Gmbh & Co. Kg Gefechtskopf
SE0300834L (sv) * 2003-03-26 2004-07-20 Saab Ab Verkansdel
DE102004017673B4 (de) * 2004-04-10 2013-12-05 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Vorrichtung zur Befüllung einer Form mit gießfähigem kunststoffgebundenen Sprengstoff
WO2009025573A1 (en) * 2007-08-21 2009-02-26 Germanov, Evgeny Pavlovich Hollow charge
FR3068456B1 (fr) 2017-06-28 2019-07-19 Nexter Munitions Charge formee

Family Cites Families (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
DE2046372C3 (de) * 1970-09-19 1978-11-23 Dynamit Nobel Ag, 5210 Troisdorf Hohlladung
DE2746666C3 (de) * 1977-10-18 1981-07-02 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Rotationssymmetrische Hohlladung
DE3901474A1 (de) * 1989-01-19 1990-07-26 Rheinmetall Gmbh Vorrichtung zur befestigung der einlage von hohlladungen oder projektilbildenden ladungen

Also Published As

Publication number Publication date
EP0491587A1 (de) 1992-06-24
FR2669721B1 (fr) 1993-01-08
FR2669721A1 (fr) 1992-05-29
DE69110634D1 (de) 1995-07-27
DE69110634T2 (de) 1996-02-08

Similar Documents

Publication Publication Date Title
CA2682213C (fr) Capot d'inverseur de poussee a grilles avec support de joint et joint associe
EP2179202B1 (de) Abdichtung mit grosser nachgiebigkeit gegenüber quetschen
EP0491587B1 (de) Hohlladung
FR2717880A1 (fr) Joint contenant des ressorts en matière composite.
FR2636027A1 (fr) Profile d'etancheite deformable sur commande pour vehicule automobile
EP0213998A1 (de) Wellendichtring und Verfahren zur Herstellung dieses Ringes
FR2958323A1 (fr) Etage redresseur de compresseur pour une turbomachine.
FR2933379A1 (fr) Procede d'assemblage d'un tapis de degivrage et d'un blindage metallique sur une structure
EP0188140B1 (de) Radialwellendichtung
FR2529007A1 (fr) Cable electrique supportant des conditions d'emploi tres severes
WO2011055094A2 (fr) Element de connexion electrique de turbomachine
EP0482977B1 (de) Übertragungsgelenkkörper mit einer Verbindungsflansche
FR2562272A1 (fr) Perfectionnement aux cables optiques a structure libre
EP0962742B1 (de) Vorrichtung zum Schneiden von nicht-metallischen Stücken mittels eines pyrotechnischen Ausdehnungsrohres
EP0140773B1 (de) Schlauch, insbesondere für den Transport von Flüssigkeiten mit unterschiedlichem Temperaturniveau
WO2016001608A1 (fr) Cadre arrière pour une structure d'inverseur de poussée à grilles de déviation
FR2846704A1 (fr) Joint tisse tubulaire composite pour l'interface horizontale des cloisons d'une turbine a vapeur
FR2830625A1 (fr) Reflecteur optique de surface, pour un engin spatial tel qu'un satellite geostationnaire
WO2017072460A1 (fr) Porte d'acces au reservoir de carburant ou a une zone seche d'un aeronef
FR2670730A1 (fr) Platine d'essuie-glace, notamment pour vehicules automobiles.
FR3087243A1 (fr) Joint d'etancheite intumescent
EP0784088B1 (de) Heissschmelzbare und/oder expandierbare Klebverbindung
FR3026344A1 (fr) Panneau anti-feu
EP2415114B1 (de) Funkantenne
FR2568415A1 (fr) Antenne de transmission d'ondes hyperfrequences.

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17P Request for examination filed

Effective date: 19921128

17Q First examination report despatched

Effective date: 19940215

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

REF Corresponds to:

Ref document number: 69110634

Country of ref document: DE

Date of ref document: 19950727

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950915

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

Ref country code: GB

Payment date: 19981112

Year of fee payment: 8

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: 19991126

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

Effective date: 19991126

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

Ref country code: DE

Payment date: 20101119

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20101122

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69110634

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69110634

Country of ref document: DE

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 EXPIRATION OF PROTECTION

Effective date: 20111127