EP3002542B1 - Dispositif de formation de fragmentation a l'aide de charges rainurees pouvant etre activees par temperature - Google Patents

Dispositif de formation de fragmentation a l'aide de charges rainurees pouvant etre activees par temperature Download PDF

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Publication number
EP3002542B1
EP3002542B1 EP15002816.5A EP15002816A EP3002542B1 EP 3002542 B1 EP3002542 B1 EP 3002542B1 EP 15002816 A EP15002816 A EP 15002816A EP 3002542 B1 EP3002542 B1 EP 3002542B1
Authority
EP
European Patent Office
Prior art keywords
notch
charge
warhead
warhead according
casing
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.)
Not-in-force
Application number
EP15002816.5A
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German (de)
English (en)
Other versions
EP3002542A1 (fr
Inventor
Markus Graswald
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.)
TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
Original Assignee
TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
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Application filed by TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH filed Critical TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
Publication of EP3002542A1 publication Critical patent/EP3002542A1/fr
Application granted granted Critical
Publication of EP3002542B1 publication Critical patent/EP3002542B1/fr
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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
    • F42B12/22—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 with fragmentation-hull construction
    • 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

Definitions

  • the size and shape of the fragments depends in addition to the explosive charge and its ignition essentially from the L / D ratio of the warhead and the material properties of the warhead casing. These are the wall thickness and quasi-static properties such as tensile strength, yield strength and elongation at break.
  • the stresses occurring as a result of the expansion of the sheath in the circumferential direction lead to typical shear fractures.
  • the shell splits can be very long and can extend over the entire length of the warhead casing.
  • the subject of the present invention is therefore a device which allows a controlled splinter formation even at the pressures occurring in the smallest output mode.
  • the splinter masses can be significantly reduced and at the same time the fragment density can be increased.
  • both the effect against military targets at close range can be improved and at the same time collateral damage areas reduced.
  • the design of a deflagrator is specified depending on various performance characteristics such as dimensions and containment. In this case, comparatively large and heavy shell splinters can occur in the smallest active mode.
  • metals such as e.g. Steels high strength and brittle properties (low yield strength and elongation at break) and / or convex curved shell shapes already leads to smaller splinters. This is because then the decomposition in the axial direction works better.
  • Ring inserts are described here, which disassemble the detonative reaction with a shaped charge effect, the outer shell. It should be noted that the effect of deflagrative / subdetonative conversion to none Hollow charge effect leads, since the deflagrative reaction mechanism does not produce a shock front with high pressures.
  • a warhead according to claim 1 is proposed.
  • the quasistatic pressures that occur during deflagration depend on the rates of energy dissipation compared to energy production. This also plays the damming of the warhead through its shell and eventual
  • Lid design measures for venting and the output temperature of the explosive charge of the warhead and its surroundings a role.
  • the apparatus proposed in the context of the invention is intended to significantly improve the axial disassembly of the casing into shorter and, as a whole, lighter splinters.
  • notch charges also known as explosive notches, cutting charges or linear shaped charges
  • notch charges are proposed which are located on the inside of the envelope.
  • the sheath in the affected areas is significantly weakened and / or penetrated, so that smaller fragments can form as a result. Examples of possible cross sections of the notch charges are in FIG. 1 indicated, but these are not necessarily limited thereto.
  • the aforementioned Kerbladonne be made temperature-activated. It is exploited that a multi-phase reaction zone consisting of flame and pressure front, as typically occurs in a combustion or deflagration reaction leads to high temperatures of several 1000 K.
  • the Kerbladisme be carried out so that a thermally activated ignition charge due to the ongoing reaction increases the pressure locally and ultimately leads to a shock-initiated, independent reaction in the Kerbladung after a dependent of the explosive and initiation pressure starting route. As soon as this detonation front strikes the end of the notch charge facing the shell, it collapses and leads to a local weakening of the shell in the form of a notch effect.
  • the notch may also be made of an insert made of a metal, plastic or any other inert material. In addition, reactive deposits are possible.
  • the device can be dammed with an inert material.
  • a clever combination of the explosive of the notch charge and its containment can lead to the omission of an ignition charge.
  • the device may be surrounded by a single or multiple layers of inert damping material having shock-absorbing properties to avoid undesirable sympathetic initiation of the explosive charge. This in turn helps to improve the IM properties in thermal stimuli.
  • FIG. 2 shows the cross section of the notch charge (3) with ignition charge (4), damping and damping layers (5,6), which is arranged in front of an outer shell (1) and embedded in a main charge (2).
  • These kerf charges may ultimately be arranged axially, transversely and / or obliquely to the warhead axis individually or a plurality of parallel and / or intersecting layers to produce chips of a desired size and mass. Examples of such arrangements are in FIG. 3 to find, which are represented on a cylindrical warhead. In addition, however, any other shapes, such as convex-shaped warheads, as are typically used in bombs, artillery and mortars, possible.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (11)

  1. Ogive de combat, comportant :
    une charge explosive principale (2) et une enveloppe (1), une pluralité de charges entaillées (3) étant placée sur le côté intérieur de l'enveloppe pour la fragmentation contrôlée de l'enveloppe, une charge d'allumage (4) étant placée en amont de chaque charge entaillée, ladite charge d'allumage étant mise en oeuvre en détonation au moyen de la soumission à l'action d'une température élevée et en utilisant un effet TDD (transition déflagration-détonation), l'enveloppe étant affaiblie au moyen de l'effet d'entaille de telle manière que l'enveloppe peut être fragmentée en éclats de manière contrôlée.
  2. Ogive de combat selon la revendication 1, dans laquelle la charge d'allumage peut être allumée au moyen d'un gaz chaud.
  3. Ogive de combat selon l'une des revendications précédentes, comportant une couche de cloisonnement entourant au moins partiellement la charge entaillée et la charge d'allumage.
  4. Ogive de combat selon l'une des revendications précédentes, comportant au moins une couche d'amortissement entourant au moins partiellement la charge entaillée et la charge d'allumage.
  5. Ogive de combat selon la revendication 4, dans laquelle l'au moins une couche d'amortissement est constituée de matériaux inertes ayant des propriétés d'amortissement des chocs.
  6. Ogive de combat selon l'une des revendications précédentes, dans laquelle les charges entaillées sont disposées de manière axiale, transversale et/ou oblique par rapport à un axe d'ogive de combat.
  7. Ogive de combat selon la revendication 6, dans laquelle les charges entaillées sont disposées individuellement ou à plusieurs dans des positions parallèles et/ou se croisant.
  8. Ogive de combat selon l'une des revendications précédentes, présentant une forme convexe.
  9. Ogive de combat selon l'une des revendications précédentes, dans laquelle la charge entaillée comporte un insert.
  10. Ogive de combat selon la revendication 9, dans laquelle l'insert est constitué de métal, de matière plastique ou d'un matériau inerte.
  11. Ogive de combat selon la revendication 9, dans laquelle l'insert est réactif.
EP15002816.5A 2014-10-01 2015-09-30 Dispositif de formation de fragmentation a l'aide de charges rainurees pouvant etre activees par temperature Not-in-force EP3002542B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014014332.5A DE102014014332B3 (de) 2014-10-01 2014-10-01 Vorrichtung und Verfahren zur kontrollierten Splitterbildung mittels temperaturaktivierbarer Kerbladungen

Publications (2)

Publication Number Publication Date
EP3002542A1 EP3002542A1 (fr) 2016-04-06
EP3002542B1 true EP3002542B1 (fr) 2018-04-04

Family

ID=54256491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15002816.5A Not-in-force EP3002542B1 (fr) 2014-10-01 2015-09-30 Dispositif de formation de fragmentation a l'aide de charges rainurees pouvant etre activees par temperature

Country Status (4)

Country Link
US (1) US9982979B2 (fr)
EP (1) EP3002542B1 (fr)
DE (1) DE102014014332B3 (fr)
ES (1) ES2675529T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL247736B (en) * 2016-09-08 2020-11-30 Rafael Advanced Defense Systems Ltd Explosive system
US10731958B1 (en) * 2016-11-22 2020-08-04 The United States Of America As Represented By The Secretary Of The Navy Monolithic fragmentation casing with tunnel pattern
US10731955B2 (en) * 2017-04-13 2020-08-04 Lawrence Livermore National Security, Llc Modular gradient-free shaped charge

Citations (2)

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EP2133654A2 (fr) * 2008-06-11 2009-12-16 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Procédé et dispositif pour controler la puissance d'une tête de combat
EP2336710A2 (fr) * 2009-12-21 2011-06-22 Halliburton Energy Services, Inc. Dispositif de transition de déflagration à détonation

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FR1337225A (fr) * 1961-11-24 1963-09-13 Schlumberger Prospection Perfectionnements aux dispositifs d'amorçage des cordeaux détonants
FR2438686A1 (fr) * 1978-10-13 1980-05-09 France Etat Procede de fragilisation par bombardement electronique
DE2852359C1 (de) * 1978-12-04 1991-02-21 Dynamit Nobel Ag Inerteinlage zur Detonationswellenlenkung in Hohlladungen
DE3016861C2 (de) * 1980-05-02 1984-07-12 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Gefechtskopf mit einer Hülle zur Splitterbildung
US4314614A (en) * 1980-05-30 1982-02-09 Dresser Industries, Inc. Method and apparatus for disarming and arming explosive oil well perforators
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DE10115950C1 (de) * 2001-03-30 2002-06-06 Eads Deutschland Gmbh Verfahren und Vorrichtung zur Entschärfung von Munition
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EP2133654A2 (fr) * 2008-06-11 2009-12-16 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Procédé et dispositif pour controler la puissance d'une tête de combat
EP2336710A2 (fr) * 2009-12-21 2011-06-22 Halliburton Energy Services, Inc. Dispositif de transition de déflagration à détonation

Also Published As

Publication number Publication date
DE102014014332B3 (de) 2016-03-17
EP3002542A1 (fr) 2016-04-06
US9982979B2 (en) 2018-05-29
US20160097620A1 (en) 2016-04-07
ES2675529T3 (es) 2018-07-11

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