EP3002542A1 - Dispositif et procede de formation de fragmentation a l'aide de charges nucleaires pouvant etre reactivees par temperature - Google Patents

Dispositif et procede de formation de fragmentation a l'aide de charges nucleaires pouvant etre reactivees par temperature Download PDF

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Publication number
EP3002542A1
EP3002542A1 EP15002816.5A EP15002816A EP3002542A1 EP 3002542 A1 EP3002542 A1 EP 3002542A1 EP 15002816 A EP15002816 A EP 15002816A EP 3002542 A1 EP3002542 A1 EP 3002542A1
Authority
EP
European Patent Office
Prior art keywords
shell
warhead
charge
controlled
notch
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.)
Granted
Application number
EP15002816.5A
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German (de)
English (en)
Other versions
EP3002542B1 (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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Publication date
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
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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.
  • the quasistatic pressures that occur during deflagration depend on the rates of energy dissipation compared to energy production.
  • the damming of the warhead through its shell and eventual cover, constructive measures for venting as well as the initial temperature of the explosive charge of the warhead and its environment plays 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 invention proposes that the aforementioned notch loads are 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 with ignition charge, Dämmungs- and damping layers, which is arranged in front of an outer shell and embedded in a main charge.
  • 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)
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 true EP3002542A1 (fr) 2016-04-06
EP3002542B1 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 (3)

* Cited by examiner, † Cited by third party
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DE2941480A1 (de) * 1978-10-13 1980-04-30 France Etat Verfahren und vorrichtung zur oertlichen versproedung von metallen, insbesondere der maentel von sprengladungen
EP1225416A1 (fr) * 2001-01-19 2002-07-24 Snpe Elément de munition explosive à fragmentation
US7891297B1 (en) * 2005-10-14 2011-02-22 Bae Systems Information And Electronic Systems Integration Inc. Adaptable smart warhead and method for use

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US3135205A (en) * 1959-03-03 1964-06-02 Hycon Mfg Company Coruscative ballistic device
FR1337225A (fr) * 1961-11-24 1963-09-13 Schlumberger Prospection Perfectionnements aux dispositifs d'amorçage des cordeaux détonants
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
US4662281A (en) * 1984-09-28 1987-05-05 The Boeing Company Low velocity disc pattern fragment warhead
US5129326A (en) * 1987-04-14 1992-07-14 Aerojet-General Corporation Ordnance device with explosion protection
US4938143A (en) * 1987-04-29 1990-07-03 Trojan Corporation Booster shaped for high-efficiency detonating
US5880399A (en) * 1997-07-14 1999-03-09 Dyno Nobel Inc. Cast explosive composition with microballoons
US6435095B1 (en) * 2000-08-09 2002-08-20 Mccormick Selph, Inc. Linear ignition system
DE10115950C1 (de) * 2001-03-30 2002-06-06 Eads Deutschland Gmbh Verfahren und Vorrichtung zur Entschärfung von Munition
US20040216822A1 (en) * 2001-07-03 2004-11-04 Heinz Hofmann Process for the production of a pressed insensitive explosive mixture
US8082846B2 (en) * 2002-08-12 2011-12-27 Qinetiq Limited Temperature responsive safety devices for munitions
US7373885B2 (en) * 2005-10-28 2008-05-20 Lockheed Martin Corporation Device for venting a container housing an energetic material and method of using same
EP2100088A4 (fr) * 2006-12-20 2012-11-28 James D Ruhlman Bombe à endommagement collatéral (rcdb) comprenant un système de fusible avec charge mise en forme, système et procédé de fabrication de celle-ci
GB0703244D0 (en) * 2007-02-20 2007-03-28 Qinetiq Ltd Improvements in and relating to oil well perforators
DE102008027900B4 (de) * 2008-06-11 2013-07-04 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Verfahren und Vorrichtung zur Leistungssteuerung eines Gefechtskopfes
US8627771B1 (en) * 2009-09-21 2014-01-14 The United States of America as Reperesented by the Secretary of the Army Selectable fragment size fragmentation warhead
US8161880B2 (en) * 2009-12-21 2012-04-24 Halliburton Energy Services, Inc. Deflagration to detonation transition device
US8272330B1 (en) * 2010-02-22 2012-09-25 The United States Of America As Represented By The Secretary Of The Army Selectable size fragmentation warhead
US8276520B1 (en) * 2010-05-13 2012-10-02 The United States Of America As Represented By The Secretary Of The Army Adaptive fragmentation mechanism to enhance lethality
US8272329B1 (en) * 2011-07-28 2012-09-25 The United States Of America As Represented By The Secretary Of The Army Selectable lethality warhead patterned hole fragmentation insert sleeves
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DE102013011404B4 (de) * 2013-07-09 2015-03-19 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Verfahren und Vorrichtung zur Leistungssteuerung eines Wirksystems
DE102013011786A1 (de) * 2013-07-15 2015-01-15 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Vorrichtung zur gesteuerten Initiierung der Deflagration einer Sprengladung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941480A1 (de) * 1978-10-13 1980-04-30 France Etat Verfahren und vorrichtung zur oertlichen versproedung von metallen, insbesondere der maentel von sprengladungen
EP1225416A1 (fr) * 2001-01-19 2002-07-24 Snpe Elément de munition explosive à fragmentation
US7891297B1 (en) * 2005-10-14 2011-02-22 Bae Systems Information And Electronic Systems Integration Inc. Adaptable smart warhead and method for use

Also Published As

Publication number Publication date
US9982979B2 (en) 2018-05-29
EP3002542B1 (fr) 2018-04-04
ES2675529T3 (es) 2018-07-11
DE102014014332B3 (de) 2016-03-17
US20160097620A1 (en) 2016-04-07

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