EP1148313A2 - 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
EP1148313A2
EP1148313A2 EP01105851A EP01105851A EP1148313A2 EP 1148313 A2 EP1148313 A2 EP 1148313A2 EP 01105851 A EP01105851 A EP 01105851A EP 01105851 A EP01105851 A EP 01105851A EP 1148313 A2 EP1148313 A2 EP 1148313A2
Authority
EP
European Patent Office
Prior art keywords
ignition
ignition device
wire
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.)
Granted
Application number
EP01105851A
Other languages
German (de)
English (en)
Other versions
EP1148313A3 (fr
EP1148313B1 (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 igniter for igniting a Powder propellant.
  • the invention further relates to a method of manufacture such an igniter.
  • the wire-shaped conductor and first evaporates an arc plasma channel is created inside the respective propellant powder tubes.
  • the energy is transferred to the. Via the plasma channels via radiation transport mechanisms Environment. This release of energy leads to a rapid ignition of the propellant powder tubes and their implementation.
  • the resulting propellant gases of the propellant powder tubes and the released arc radiation a quick and even ignition of the surrounding propellant charge.
  • the object of the invention is an ignition device to be specified at which a reduced to ignite the powder propellant charge Need for electrical power is required, the beneficial properties the electrothermal ignition can still be used. Furthermore should a method for producing such an igniter are disclosed.
  • the invention is essentially based on the idea of not introducing the electrically conductive wire into a propellant charge powder tube, but rather to coat it with a pyrotechnic primer.
  • a mixture based on potassium perchlorate-zirconium (KClO 4 -Zr) has proven to be advantageous as an ignition charge.
  • This mixture is preferably a polymeric binder from the series of fluoroalkanes added, which causes the primer from a solvent emulsion Wires can be applied and after evaporation of the solvent firmly on the wire is liable.
  • the proportion of binder also gives the primer sticking to the wire elastic properties.
  • zirconium oxide (ZrO 2 ) is formed at temperatures around 4000 ° C, which, as fine hot spots, supports 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 a current source 3 for ignition via a switch 2.
  • a current source 3 for ignition via a switch 2.
  • the corresponding The weapon in which the cartridge 1 is located is not for reasons of clarity shown.
  • the cartridge 1 comprises a sleeve 5 filled with a propellant charge 4 and a propellant charge sleeve 5 bottom-closing sleeve bottom 6.
  • the combustible sleeve 5 is in Area of its end 7 on the sleeve bottom in a form-fitting manner between an insulating molded part 8 and the sleeve bottom 6 fixed.
  • a high-voltage electrode which is electrically insulated from it 9 arranged, which passed through the molded insulating part 8 and with a Metal disc 10 is connected.
  • an electrically conductive wire 11 with a homogeneous over its length Fixed diameter, which is coated with an ignition charge 12 (Fig.2). in the Area of the sleeve cover 13 of the propellant charge sleeve 5 is the wire 11 with an annular Contact part 14 connected, which in turn is the inner wall at ground potential contacted the weapon, not shown.
  • the switch 2 is closed and the one with a row current source 3 equipped with charged capacitors (at a voltage of up to 40 unloaded suddenly.
  • the resulting discharge current leads to an explosive Vaporizing the wire 11 and initiating an arc plasma all over Length of wire.
  • the interaction of the arc plasma with the Ignition charge 12 is initiated over the entire length of the coating 12 and the resulting pyrotechnic particles are in the propellant charge 4th hurled in.
  • FIG. 3 shows the structure of an arc-introducing wire 15 with an inhomogeneous diameter, which is coated with an ignition charge 16.
  • an ignition charge 16 When initiating a corresponding high current in the wire 15, this is initially in the areas 17 with low Diameter evaporated explosively. In these areas, therefore, begins first the formation of arc plasmas and their interaction with the primer 16. Arc plasmas are then formed in regions 18 at different times of the wire 15, which have a larger diameter. About the wire thickness and / or The desired time delay in the generation of the plasmas can be determined via the current profiles 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 a conical shape in the direction of the longitudinal axis Diameter course, which is coated with an ignition charge 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 processes can be generated, the time in the longitudinal direction of the wire 19 run controlled. The running speeds are determined by the wire geometry and / or adjusted by the shape of the current pulse.
  • the primer can also be made using appropriate additives be electrically conductive.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)
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 true EP1148313A2 (fr) 2001-10-24
EP1148313A3 EP1148313A3 (fr) 2004-02-04
EP1148313B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2827094A1 (fr) * 2013-07-15 2015-01-21 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Dispositif d'initiation commandée de la déflagration d'une charge explosive

Families Citing this family (5)

* 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

Citations (5)

* 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
US3831523A (en) * 1967-01-04 1974-08-27 Us Army Electroexplosive device
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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926566A (en) * 1956-11-30 1960-03-01 Walter W Atkins Device for accelerating the ignition of the propellant for a projectile
DE2232049C2 (de) * 1972-06-30 1984-03-01 Jakobs, Ferdinand, 6601 Quierschied Kombiniertes Zündhütchen für elektrische und Schlagzündung
DE59207978D1 (de) * 1991-06-29 1997-03-13 Dynamit Nobel Ag Vorrichtung zum Verschiessen von Munition
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

Patent Citations (5)

* 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
US3831523A (en) * 1967-01-04 1974-08-27 Us Army Electroexplosive device
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2827094A1 (fr) * 2013-07-15 2015-01-21 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Dispositif d'initiation commandée de la déflagration d'une charge explosive

Also Published As

Publication number Publication date
DE50107011D1 (de) 2005-09-15
US6578493B2 (en) 2003-06-17
EP1148313A3 (fr) 2004-02-04
EP1148313B1 (fr) 2005-08-10
US20020005136A1 (en) 2002-01-17
IL142594A0 (en) 2002-03-10
IL142594A (en) 2007-08-19
KR20010098796A (ko) 2001-11-08
DE10020019A1 (de) 2001-10-25

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