EP2827094B1 - Dispositif d'initiation commandée de la déflagration d'une charge explosive - Google Patents

Dispositif d'initiation commandée de la déflagration d'une charge explosive Download PDF

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Publication number
EP2827094B1
EP2827094B1 EP14002294.8A EP14002294A EP2827094B1 EP 2827094 B1 EP2827094 B1 EP 2827094B1 EP 14002294 A EP14002294 A EP 14002294A EP 2827094 B1 EP2827094 B1 EP 2827094B1
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EP
European Patent Office
Prior art keywords
explosive charge
core
explosive
charge
deflagration
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.)
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EP14002294.8A
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German (de)
English (en)
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EP2827094A1 (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
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TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings

Definitions

  • the invention relates to a device for the controlled initiation of the deflagration of an explosive charge, which is arranged in a sheath with non-constant diameter, comprising at least one extending in the region of the longitudinal axis of the explosive charge detonation cord, wherein the detonation cord is designed as an explosive charge core.
  • a dosable explosive charge for a warhead with two different ignition devices has become known. While the first ignition device detonatively initiates the explosive charge, the further, oppositely directed ignition device is designed such that at most a subdetonative initiation can take place. The use of at least one detonating cord for this purpose is also known from this. In practice, some problems have arisen which, in extreme cases, may lead to the termination of initiation or to complete detonation initiation.
  • the US 2012/0227609 A1 describes an ignition system with two different ignition devices.
  • the first ignition device is conventionally designed for the detonative triggering of the explosive charge.
  • the locally opposite second ignition device is dimensioned for a deflagrative initiation of the explosive charge. Since in this ignition system the same construction principle with opposite ignition points is used, from which the detonation waves run against each other, the already known deficiencies occur here as well.
  • the DE 10 2005 031 588 B3 discloses the preamble of independent claim 1 and shows a device for the controlled initiation of the deflagration of an explosive charge, which is arranged in a casing comprising at least one extending in the region of the longitudinal axis of the explosive charge Detonation cord, the detonation cord is designed as an explosive charge core. Other features of the detonation cord are not described.
  • the present invention has the object to develop an ignition device which is able to maintain a deflagrative initiation over the entire length of the explosive charge, without the deflagration reaction in the axial or radial direction passes into a burn, dies or turns into a detonation.
  • the explosive charge core can be fired from both ends as required.
  • the transverse dimension of the explosive charge core is adapted to the course of the envelope in the longitudinal direction of the explosive charge. This can be done in stages or continuously so that the explosive charge core can be matched to any shape of the envelope.
  • Another adaptation option is that the charging of the explosive charge core over the length of the explosive charge core with respect to the type of explosive is homogeneously or locally differently adjustable. It can therefore be combined with each other to an explosive charge core if necessary, also different explosive types.
  • This jacket or tube may for example consist of a plastic layer or a fabric or a combination of the two.
  • a material for a sheath include textile fibers, plastics (polymers) such.
  • polyethylene polyethylene, Kvlar, nylon, polypropylene but also wax into consideration.
  • the deflagrator which is initiated in the smallest action mode alone, triggers a subdetonative reaction called deflagration.
  • deflagration a subdetonative reaction
  • the reaction ultimately leads to an increase in pressure under which the explosive can also mechanically fail and crack and continue to propagate.
  • the speed of the pressure front is in the range of the speed of sound of the explosive.
  • a stable deflagration results from the rate of energy dissipation compared to the rate of energy production, which is controlled by the detonation cord here.
  • Insensitive explosive charges contain at least 10% of the plastic binder.
  • the proportion of the explosive molecule, for which Hexogen, octogen, Fox-7 (1,1-diamino-2,2-dinitroethylene) and others, can be between 90 and 50%.
  • Suitable binders include, inter alia, a two-component casting resin with hydroxyl-terminated polybutadiene (HTPB), but also silicone rubber, polyurethane rubber, polystyrene, Estan or nylon.
  • HTPB hydroxyl-terminated polybutadiene
  • the binder encapsulates the explosive crystals.
  • Such a plastic-bound explosive charge basically has microscopically small pores as a result of the manufacturing process. These pores determine the porosity of the explosive charge and provide the necessary for the deflagration reaction free surface available.
  • the porosities are typically in the single-digit percentage range.
  • the explosive charge may additionally have coated or uncoated metal powder with particles such as aluminum, magnesium, titanium carbide or zirconium carbide.
  • particles such as aluminum, magnesium, titanium carbide or zirconium carbide.
  • a share of 15 to 25 mass percent is sought to optimize the blast pressure.
  • a detonation cord or an explosive charge core are relatively high-energy (highly explosive) and / or sensitive explosives such.
  • high-energy highly explosive
  • sensitive explosives such as hexogen- or octogen-based explosives mixtures, and RDX, PETN, HMX, HNS or explosive mixtures thereof.
  • the detonating cord or detonating core should additionally have a fabric or plastic sheath which prevents direct contact with the explosive charge and results in damping of the shockwave upon detonation of the detonating cord or detonating core.
  • the diameter of the explosive charge core can vary with non-constant sheath diameter and be adapted directly to this.
  • the charging of the detonation cord is to be adapted to the size and shape of the explosive charge or cargo envelope.
  • the relevant parameters are the wall thickness, also in comparison to the charge diameter, and the material strength. These are expediently linked together via the static failure pressure. Above a specific limit pressure, more likely undesirable transitions into stronger reactions (Detonation-to-deflagration-transitions, DDTs) expected. Damping at the charge ends can be regulated by the aeration described below so that there is little difference between charges open at the ends (ie, the expansion rate and hence the pressure rate).
  • higher levels of damming especially if there is insufficient ventilation, may favor transitions into stronger reactions (DDTs).
  • the ventilation can be sustainably influenced by cargo cover, shell breakage and drilling, as long as it is a fully dammed explosive charge.
  • the ventilation is especially in the area of initiation, where the deflagration reaction begins and thereby the pressure increases first.
  • a permanent venting leads to a pressure rate with constant initiation over the charge length, which leads to a stable deflagration reaction over the charge radius.
  • This pressure rate can be measured indirectly via the expansion rate of the cargo envelope.
  • Suitable cladding materials are not only metals such as steel, aluminum, titanium or similar alloys, but also plastics or composite materials such as GRP or CFRP, as well as CRC or CFRC. This achieves a lower lethal effect, but a higher pressure wave.
  • FIG. 2 is a section through an active system shown, which is filled within the envelope HÜ except for a slender cavity in the region of the longitudinal axis LA with explosive SP.
  • This unspecified cavity serves to receive the explosive charge core SK.
  • the explosive charge core extends from a first ignition device Z1 at the tip of the active system to a further ignition device Z2 at the rear of the active system. Both ignition devices can be used to initiate the explosive charge core.
  • the explosive charge core SK is divided into a plurality of sections A1, A2, A3. Depending on the requirements of the active system, the division may also make sense in fewer or more sections. Each of these sections corresponds to charging of the explosive charge core SK adapted to this section. It is also possible to adjust the course of charging according to the course of the envelope HÜ such that the Charging decreases to a higher value in the middle range towards the end.
  • charging in section A1 can be in the value range 30 to 50 g / m, in the second range A2 in the value range 50 to 70 g / m and finally in the third range A3 in the value range 70 to 100 g / m.
  • cross section of the explosive charge core SK This can be designed, for example, rectangular, round oval, half round, depending on the need for adjustment, as in FIG. 3 is shown.
  • an explosive charge core can be applied to almost any shape and size of warhead and other active system. Another advantage is the significant reduction of

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (9)

  1. Dispositif d'amorçage commandé de la déflagration d'une charge explosive, laquelle est disposée dans une gaine au diamètre non constant, comprenant au moins un cordon de détonation qui s'étend dans la zone de l'axe longitudinal de la charge explosive, le cordon de détonation étant réalisé sous la forme d'une âme de charge explosive, caractérisé en ce que la dimension transversale de l'âme de charge explosive est adaptée au tracé de la gaine dans le sens longitudinal de la charge explosive.
  2. Dispositif selon la revendication 1, caractérisé en ce que l'âme de charge explosive peut être amorcé à chaque extrémité, au choix.
  3. Dispositif selon la revendication 1, caractérisé en ce que la charge de l'âme de charge explosive, du point de vue de sa forme, est adaptée au tracé de la gaine dans le sens longitudinal de la charge explosive.
  4. Dispositif selon la revendication 1, caractérisé en ce que la charge de l'âme de charge explosive sur la longueur de l'âme de charge explosive est réglée de manière homogène ou localement différente du point de vue de la nature de la substance explosive.
  5. Dispositif selon la revendication 4, caractérisé en ce que la substance explosive est disposée dans l'âme de charge explosive, notamment en tenant compte de sa densité et/ou de sa composition en pourcentage.
  6. Dispositif selon la revendication 1, caractérisé en ce que l'âme de charge explosive est entourée par une enveloppe.
  7. Dispositif selon la revendication 6, caractérisé en ce que l'enveloppe est constituée d'un tissu et/ou d'une matière plastique.
  8. Dispositif selon la revendication 1, caractérisé en ce que l'âme de charge explosive est entourée par un tube.
  9. Dispositif selon la revendication 8, caractérisé en ce que le tube est constitué d'un tissu et/ou d'une matière plastique.
EP14002294.8A 2013-07-15 2014-07-04 Dispositif d'initiation commandée de la déflagration d'une charge explosive Active EP2827094B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013011786.0A DE102013011786A1 (de) 2013-07-15 2013-07-15 Vorrichtung zur gesteuerten Initiierung der Deflagration einer Sprengladung

Publications (2)

Publication Number Publication Date
EP2827094A1 EP2827094A1 (fr) 2015-01-21
EP2827094B1 true EP2827094B1 (fr) 2017-11-22

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EP14002294.8A Active EP2827094B1 (fr) 2013-07-15 2014-07-04 Dispositif d'initiation commandée de la déflagration d'une charge explosive

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EP (1) EP2827094B1 (fr)
DE (1) DE102013011786A1 (fr)
ES (1) ES2655432T3 (fr)
NO (1) NO3044088T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014014332B3 (de) * 2014-10-01 2016-03-17 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Vorrichtung und Verfahren zur kontrollierten Splitterbildung mittels temperaturaktivierbarer Kerbladungen
DE102014018218B4 (de) * 2014-12-06 2023-05-17 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Vorrichtung zur gesteuerten Initiierung der Deflagration einer Sprengladung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10008914C2 (de) * 2000-02-25 2003-06-26 Tdw Verteidigungstech Wirksys Sprengladung für einen Gefechtskopf
DE10020019A1 (de) * 2000-04-22 2001-10-25 Tzn Forschung & Entwicklung Elektrothermische Anzündvorrichtung und Verfahren zu ihrer Herstellung
DE10222184B4 (de) * 2002-05-18 2005-06-09 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Gefechtskopf
DE102005031588B3 (de) * 2005-07-06 2007-01-11 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Dosierbare Ladung eines Gefechtskopfes
DE102009017160B3 (de) * 2009-04-09 2010-08-19 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Zerlegevorrichtung für die Sprengladung eines Gefechtskopfes
US8931415B2 (en) 2010-07-29 2015-01-13 Alliant Techsystems Inc. Initiation systems for explosive devices, scalable output explosive devices including initiation systems, and related methods
DE102012006044B3 (de) * 2012-03-27 2013-03-21 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Verfahren und Vorrichtung zur Messung des Verlaufs einer Deflagrationsfront in einem zylindrischen Gefechtskopf mit wenigstens zwei Zündeinrichtungen

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Publication number Publication date
ES2655432T3 (es) 2018-02-20
EP2827094A1 (fr) 2015-01-21
DE102013011786A1 (de) 2015-01-15
NO3044088T3 (fr) 2018-02-24

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