EP1148313B1 - Dispositif d'allumage électrothermique pour cartouche de munition et son procédé de fabrication - Google Patents

Dispositif d'allumage électrothermique pour cartouche de munition et son procédé de fabrication Download PDF

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Publication number
EP1148313B1
EP1148313B1 EP01105851A EP01105851A EP1148313B1 EP 1148313 B1 EP1148313 B1 EP 1148313B1 EP 01105851 A EP01105851 A EP 01105851A EP 01105851 A EP01105851 A EP 01105851A EP 1148313 B1 EP1148313 B1 EP 1148313B1
Authority
EP
European Patent Office
Prior art keywords
initiation
wire
charge
propellant charge
electrically conductive
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
EP01105851A
Other languages
German (de)
English (en)
Other versions
EP1148313A2 (fr
EP1148313A3 (fr
Inventor
Thomas Dr. Weise
Hans Karl Dr. Haak
Uwe Dr. Krone
Dirk Cegiel
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.)
Rheinmetall W&M GmbH
Original Assignee
Rheinmetall W&M GmbH
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 Rheinmetall W&M GmbH filed Critical Rheinmetall W&M GmbH
Publication of EP1148313A2 publication Critical patent/EP1148313A2/fr
Publication of EP1148313A3 publication Critical patent/EP1148313A3/fr
Application granted granted Critical
Publication of EP1148313B1 publication Critical patent/EP1148313B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/0811—Primers; Detonators characterised by the generation of a plasma for initiating the charge to be ignited
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C06B33/08—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C9/00—Chemical contact igniters; Chemical lighters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/08—Cartridges, i.e. cases with charge and missile modified for electric ignition
    • 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
    • F42C19/0823—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
    • F42C19/0834—Arrangements of a multiplicity of primers or detonators dispersed within a propellant charge for increased efficiency
    • 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
    • F42C19/08—Primers; Detonators
    • F42C19/12—Primers; Detonators electric

Definitions

  • the invention relates to an electrothermal ignition device for igniting the powder propellant charge of a cartridge according to the preamble of claim 1.
  • the wire-shaped conductor When the ignition device is activated, the wire-shaped conductor first evaporates, and an arc plasma channel is formed inside the respective propellant charge powder tubes. Via the plasma channels, the energy is released via radiation transport mechanisms to the environment. This energy output leads to a rapid ignition of the propellant powder - tubes and to implement them. The resulting propellant gases of the propellant charge powder tubes and the released arc radiation cause a rapid and uniform lighting of the surrounding propellant charge buildup.
  • the invention is based on the object of an ignition device specify at the for the ignition of the powder propellant charge a reduced Need for electrically supplied energy is required, with the advantageous properties the electrothermal ignition can continue to be used.
  • the invention is based essentially on the idea not to introduce the electrically conductive wire in a propellant charge powder tube, but to coat with a pyrotechnic ignition charge.
  • An admixture based on potassium perchlorate-zirconium (KClO 4 -Zr) has proven to be advantageous.
  • this mixture is a polymeric binder from the series of fluoroalkanes added, which causes the primer from a solvent emulsion on out Wires can be applied and after evaporation of the solvent firmly on the wire liable.
  • the binder content also gives the ignition charge adhering to the wire elastic properties.
  • zirconium oxide (ZrO 2 ) is formed at temperatures around 4000 ° C which, as fine hot spots, promotes the ignition of the propellant charge powder and reduces the need for electrical energy.
  • Fig. 1 denotes a cartridge (e.g., for firing from an armored weapon), which is connected to the ignition via a switch 2 with a power source 3.
  • the corresponding Weapon in which the cartridge 1 is, is not for reasons of clarity shown.
  • the cartridge 1 comprises a filled with a propellant charge 4 sleeve 5 and a propellant charge sleeve 5 bottom end sleeve bottom 6.
  • the combustible sleeve 5 is in Area of its sleeve bottom end 7 form fit between an insulating molding. 8 and the sleeve bottom 6 fixed.
  • the switch 2 is closed and with a number Power source 3 charged by charged capacitors (at a voltage of up to 40) kV) discharged suddenly.
  • the occurring discharge current leads to an explosive Evaporation of the wire 11 and to initiate an arc plasma on the entire Length of the wire. Due to the interaction of the arc plasma with the Ignition rate 12, its initiation over the entire length of the coating 12 is effected and the resulting pyrotechnic particles are in the propellant charge 4th hurled.
  • FIG. 3 shows the structure of an arc-introducing wire 15 with inhomogeneous diameter, which is covered with a primer 16.
  • a primer 16 When initiating a corresponding high current in the wire 15, this is initially in the areas 17 with low Diameter explosively evaporated. In these areas therefore begins first the formation of arc plasmas and their interaction with the initial charge 16. Time offset then occurs the formation of arc plasmas in the areas 18th of the wire 15, which have a larger diameter.
  • the desired time delay of the generation of the plasmas be set in the propellant charge.
  • About the distances of the wire inhomogeneities can a corresponding spatial distribution of the plasmas are generated.
  • FIG. 4 shows an electrical wire 19 with conically formed in the direction of the longitudinal axis Diameter course, which is coated with a primer 20.
  • the explosive evaporation takes place first at the point 21, at which the wire 19 has its smallest diameter and then moves in the direction of increasing the diameter.
  • Ignition operations can be generated in the longitudinal direction of the wire 19 in time run in a controlled manner.
  • the process speeds are determined by the wire geometry and / or adjusted by the shape of the current pulse.
  • the ignition set by appropriate additives be electrically conductive.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)

Claims (5)

  1. Dispositif électrothermique de mise à feu pour la mise à feu de la charge propulsive de poudre (4) d'une cartouche (1) au moyen d'au moins un fil (11; 15; 19; 22) conducteur d'électricité s'étendant au moins partiellement à travers la charge propulsive (4) dans le sens de l'axe longitudinal de la cartouche concernée (1), lequel peut être connecté à une source de courant (3), le fil électrique (11; 15; 19; 22) étant parcouru pour la mise à feu de la charge propulsive (4) par un courant d'une telle intensité qu'il s'évapore de façon explosive et amorce une décharge en arc électrique qui effectue alors la mise à feu de la charge propulsive (4), caractérisé en ce que le fil conducteur d'électricité (11; 15; 19; 22) est revêtu au moins dans une zone partielle d'une composition fulminante pyrotechnique (12 ; 16 ; 20).
  2. Dispositif de mise à feu selon la revendication 1, caractérisé en ce que le fil (11; 15; 19; 22) présente un diamètre homogène, non homogène, s'élargissant selon un cône ou s'agrandissant en étages conformément à la tenue souhaitée à la mise à feu du dispositif de mise à feu à l'intérieur de la composition fulminante (12; 16; 20).
  3. Dispositif de mise à feu selon la revendication 1 ou 2, caractérisé en ce que la composition fulminante (12; 16; 20) est conductrice d'électricité par des additions correspondantes.
  4. Dispositif de mise à feu selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il s'agit dans le cas de la composition fulminante pyrotechnique (12; 16; 20) d'un mélange à base de zirconium (Zr) et de perchlorate de potassium (KClO4).
  5. Dispositif de mise à feu selon la revendication 4, caractérisé en ce que le mélange de zirconium et de perchlorate de potassium contient un liant polymère de la série des fluoro-alcanes.
EP01105851A 2000-04-22 2001-03-09 Dispositif d'allumage électrothermique pour cartouche de munition et son procédé de fabrication Expired - Lifetime EP1148313B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10020019A DE10020019A1 (de) 2000-04-22 2000-04-22 Elektrothermische Anzündvorrichtung und Verfahren zu ihrer Herstellung
DE10020019 2000-04-22

Publications (3)

Publication Number Publication Date
EP1148313A2 EP1148313A2 (fr) 2001-10-24
EP1148313A3 EP1148313A3 (fr) 2004-02-04
EP1148313B1 true EP1148313B1 (fr) 2005-08-10

Family

ID=7639736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01105851A Expired - Lifetime EP1148313B1 (fr) 2000-04-22 2001-03-09 Dispositif d'allumage électrothermique pour cartouche de munition et son procédé de fabrication

Country Status (5)

Country Link
US (1) US6578493B2 (fr)
EP (1) EP1148313B1 (fr)
KR (1) KR20010098796A (fr)
DE (2) DE10020019A1 (fr)
IL (1) IL142594A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102624B4 (de) * 2001-01-20 2011-01-05 Rheinmetall Waffe Munition Gmbh Patrone
KR100442551B1 (ko) * 2001-10-23 2004-07-30 김창선 급팽창 혼합물의 반응 촉발장치
US7073447B2 (en) * 2003-02-12 2006-07-11 Bae Systems Land & Armaments L.P. Electro-thermal chemical igniter and connector
US6805055B1 (en) 2003-06-25 2004-10-19 Gamma Recherches & Technologies Patent Sa Plasma firing mechanism and method for firing ammunition
US10801818B2 (en) * 2013-04-26 2020-10-13 Dana Raymond Allen Method and device for micro blasting with reusable blasting rods and electrically ignited cartridges
DE102013011786A1 (de) * 2013-07-15 2015-01-15 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Vorrichtung zur gesteuerten Initiierung der Deflagration einer Sprengladung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1006141A (fr) * 1947-11-21 1952-04-21 Cartouche à mise de feu électrique
US2801585A (en) * 1954-03-25 1957-08-06 Rex L Smith Squib
US2926566A (en) * 1956-11-30 1960-03-01 Walter W Atkins Device for accelerating the ignition of the propellant for a projectile
US3831523A (en) * 1967-01-04 1974-08-27 Us Army Electroexplosive device
DE2232049C2 (de) * 1972-06-30 1984-03-01 Jakobs, Ferdinand, 6601 Quierschied Kombiniertes Zündhütchen für elektrische und Schlagzündung
EP0526389B1 (fr) * 1991-06-29 1997-01-29 Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Dispositif pour décharger une munition
US5287791A (en) * 1992-06-22 1994-02-22 Fmc Corporation Precision generator and distributor device for plasma in electrothermal-chemical gun systems
US5648634A (en) * 1993-10-20 1997-07-15 Quantic Industries, Inc. Electrical initiator
US6164208A (en) * 1998-07-14 2000-12-26 Chung Shan Institute Of Science & Technology Igniter for vehicle airbag inflator
DE19834058C2 (de) * 1998-07-29 2001-08-23 Rheinmetall W & M Gmbh Treibladung
SE517704C2 (sv) * 1999-05-10 2002-07-09 Tzn Forschung & Entwicklung Patron med elektrotermisk tändanordning
SE517737C2 (sv) * 1999-05-11 2002-07-09 Tzn Forschung & Entwicklung Patron med elektrotermisk antändningsanordning

Also Published As

Publication number Publication date
US6578493B2 (en) 2003-06-17
EP1148313A2 (fr) 2001-10-24
US20020005136A1 (en) 2002-01-17
IL142594A (en) 2007-08-19
IL142594A0 (en) 2002-03-10
KR20010098796A (ko) 2001-11-08
EP1148313A3 (fr) 2004-02-04
DE10020019A1 (de) 2001-10-25
DE50107011D1 (de) 2005-09-15

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