EP0310517A1 - Geschossboden für eine mit einem elektrischen Zünder versehene Grosskalibermunition - Google Patents

Geschossboden für eine mit einem elektrischen Zünder versehene Grosskalibermunition Download PDF

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Publication number
EP0310517A1
EP0310517A1 EP88402471A EP88402471A EP0310517A1 EP 0310517 A1 EP0310517 A1 EP 0310517A1 EP 88402471 A EP88402471 A EP 88402471A EP 88402471 A EP88402471 A EP 88402471A EP 0310517 A1 EP0310517 A1 EP 0310517A1
Authority
EP
European Patent Office
Prior art keywords
base
insert
contact
contact surface
electrical connection
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
EP88402471A
Other languages
English (en)
French (fr)
Other versions
EP0310517B1 (de
Inventor
Jean-Claude Sauvestre
Patrick Carnis
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.)
Giat Industries SA
Original Assignee
Direction General pour lArmement DGA
Giat Industries SA
Etat Francais
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 Direction General pour lArmement DGA, Giat Industries SA, Etat Francais filed Critical Direction General pour lArmement DGA
Priority to AT88402471T priority Critical patent/ATE78333T1/de
Publication of EP0310517A1 publication Critical patent/EP0310517A1/de
Application granted granted Critical
Publication of EP0310517B1 publication Critical patent/EP0310517B1/de
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
    • 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
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/38—Separately-loaded propellant charges, e.g. cartridge bags
    • 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 field of the present invention is that of the caps or socket bases for ammunition and in particular for large caliber ammunition carrying an electric igniter.
  • the propellant charge is ignited by an igniter, integral with the base, receiving the electrical ignition current via an electrode on which a contact integral with the cylinder head is applied. ; the return of current is ensured by the electrical ground of the weapon.
  • Such caps are heavy to handle, moreover they must fulfill a sealing function between the chamber of the weapon and the breech, and thus being provided with an annex sealing device of the type of those described in the patents FR 2365096, FR 2380531 and FR 2218547. These sealing devices do not always have all the guarantees of efficiency and the metal caps may present, after firing, permanent deformations making it difficult to extract them from the chamber.
  • the invention also provides a reliable electrical connection by providing electrical contacts chamber-base and base-igniter having a low contact resistance.
  • the base according to the invention may be secured to a socket comprising a case.
  • the invention thus relates to a base for a large caliber ammunition intended to be placed in a chamber of a weapon, base made of a material which is not electrically conductive, and comprising an axial housing intended to receive a electric igniter, base characterized in that it comprises at least one metal insert having a thickness of less than 2 mm, extending radially between the axial housing and the periphery of the base, in that it also comprises a first connection means electrical connection between the insert (s) and the igniter and a second electrical connection means between the insert (s) and the weapon and in that each insert comprises at least one flush contact zone at a surface of the base, this zone constituting one of the means of electrical connection.
  • the insert (s) may comprise a first flush contact zone at an internal contact surface of the axial housing, all of the first contact zones thus constituting the first means of electrical connection.
  • the insert (s) may include a second flush contact zone at a peripheral contact surface of the base, surface coming into contact with the weapon, the set of second contact zones constituting the second means of electrical connection. .
  • the second electrical connection means may also consist of a metal ring integral with the base, in contact with the insert (s) and coming into contact with the weapon.
  • the contact surface inside the axial housing and / or the peripheral contact surface of the base are planar annular surfaces. These contact surfaces can be covered with a conductive varnish or be metallic.
  • a single insert may be used and be constituted by a grid embedded in the non-conductive material, grid which can be flat; or else be constituted by a plate forming a bowl, pinched at its periphery between the ring and the non-conductive material, and at the axial housing between the non-conductive material and the igniter.
  • the invention will also apply to a socket comprising a case integral with a base, case and base which can be made of the same material and in a single piece.
  • the non-conductive material will preferably be a technopolymer.
  • a weapon 1 shown diagrammatically comprises a chamber 2 and a tube 13.
  • a munition constituted by a projectile 3 placed in the tube 13, a propellant charge 4 located in the chamber 2 and constituted for example by gargousses, and a base 5 comprising an axial housing 7 in which an electric igniter 6 is fixed.
  • Figure 2 shows an enlarged base 5 according to a first embodiment of the invention.
  • the base 5 made of non-conductive material, for example a thermoplastic, is in contact with the weapon on the one hand at the level of a cylindrical peripheral contact surface 9 fitted in the chamber, and on the other hand at the level of a planar peripheral contact surface 10 of a shoulder 14 formed on the base.
  • Other modes of connection between the igniter 6 and the base are conceivable; the igniter could be forcibly mounted in the axial housing, it would suffice to provide a tight fit between these two elements, the igniter 6 could then be in contact with a cylindrical inner contact surface 12 of the axial housing 7.
  • the contact surfaces 10 and 11 are here annular surfaces at which the metal constituting the grid appears, the electric igniter 6, screwed in its housing will come to bear on a annular metallic zone which although of reduced thickness (less than 2 mm, for example 0.3 mm) forms an integral part of the base and has good mechanical strength; a vigorous clamping of the igniter is possible which guarantees a low contact resistance (of the order of 4 ohms).
  • the shoulder 14 applied strongly against the weapon by the breech will guarantee a low electrical resistance of contact with a strong mechanical resistance of the conductive zone.
  • the mass of the insert may represent only 0.2% to 10% of the total mass of the base.
  • Figure 3 is a perspective view of the base of Figure 2, this view clearly shows the internal and peripheral annular contact surfaces 10 and 11, as well as the corresponding flush contact areas integral with the grid.
  • Figures 4 and 5 show a second embodiment of the invention.
  • the base 5 of non-conductive material carries a metal ring 15 which has the function of mechanically reinforcing the shoulder 14, which can be useful with certain types of artillery.
  • the insert 8 is constituted here by a metal plate forming a bowl, pinched at its periphery between the ring 15 and the non-conductive material. This plate is flush with the cylindrical and flat internal contact surfaces (respectively 12 and 11) of the axial housing 7.
  • the electrical contact is also established between the insert 8 and the ring 15.
  • the latter is in contact with the weapon, thus the ring 15 acts as an electrical connection means between the insert and the weapon.
  • the ring 15 acts as an electrical connection means between the insert and the weapon.
  • it was the flush contact zone at the level of the peripheral contact surface 10 which acted as a means of electrical connection between insert and weapon.
  • This embodiment therefore makes it possible to reconcile the advantages linked to the invention (low thickness, therefore low mass, of the inserts and high quality of the electrical contacts) with an additional requirement in terms of the mechanical strength of the shoulder 14 on which will come act a weapon extractor (not shown).
  • FIGS. 6 to 8 illustrate such variants.
  • an insert 8 constituted by a flat metallic grid is flush with the level of the flat internal contact surface 11 of the axial housing 7, and in contact with a ring 15.
  • the base 5 does not have a ring 15
  • the insert 8 in the form of a grid
  • the insert 8 is flush both at the level of the plane peripheral contact surface 10 of the base, and at the level of the surface of cylindrical inner contact 12 of the axial housing.
  • the insert 8 has two flush contact zones at the level of the internal, cylindrical contact surface 12, and of the cylindrical peripheral contact surface 9.
  • FIG. 9 shows in half view a base comprising 4 inserts, regularly spaced from one another and each constituted by a strip of flush grid at the desired surfaces. This configuration can be combined with the contact areas shown in Figures 2, 6, 7, 8.
  • An advantageous embodiment of the invention will consist of injecting the non-conductive material (thermoplastic) on the insert (s), then making the latter flush by machining at the level of the intended contact zones. A conductive varnish or a metallization can then be applied to the latter.
  • the present invention will finally also apply to sockets constituted by a cylindrical case (made of plastic or combustible material) secured to a base.
  • the bottom of the socket plays the role of the base described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Air Bags (AREA)
  • Floor Finish (AREA)
  • Fuses (AREA)
  • Elimination Of Static Electricity (AREA)
  • Conductive Materials (AREA)
  • Resistance Heating (AREA)
EP88402471A 1987-10-01 1988-09-30 Geschossboden für eine mit einem elektrischen Zünder versehene Grosskalibermunition Expired - Lifetime EP0310517B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88402471T ATE78333T1 (de) 1987-10-01 1988-09-30 Geschossboden fuer eine mit einem elektrischen zuender versehene grosskalibermunition.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8713562 1987-10-01
FR8713562A FR2621388B1 (fr) 1987-10-01 1987-10-01 Culot pour munition de gros calibre comportant un allumeur electrique

Publications (2)

Publication Number Publication Date
EP0310517A1 true EP0310517A1 (de) 1989-04-05
EP0310517B1 EP0310517B1 (de) 1992-07-15

Family

ID=9355413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402471A Expired - Lifetime EP0310517B1 (de) 1987-10-01 1988-09-30 Geschossboden für eine mit einem elektrischen Zünder versehene Grosskalibermunition

Country Status (6)

Country Link
EP (1) EP0310517B1 (de)
AT (1) ATE78333T1 (de)
DE (1) DE3872818T2 (de)
FR (1) FR2621388B1 (de)
IL (1) IL87872A0 (de)
NO (1) NO166675C (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402268A1 (de) * 1989-06-09 1990-12-12 Thomson-Brandt Armements Pyrotechnischer Anzünder für wehrtechnische Ladungen oder Raketenmotoren oder Gasgeneratoren
FR2786264A1 (fr) * 1998-11-19 2000-05-26 Tzn Forschung & Entwicklung Cartouche pouvant etre mise a feu a partir d'une arme de gros calibre
FR2786265A1 (fr) * 1998-11-19 2000-05-26 Tzn Forschung & Entwicklung Cartouche pouvant etre mise a feu a partir d'une arme de gros calibre
EP1258695A1 (de) * 2001-05-18 2002-11-20 Giat Industries Geschossboden für eine mit einem elektrischen Zünder versehene Munition

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE33599C (de) * S. RUSSELL in Brooklyn, V. St. A Zündhütchen für elektrische Zündung
DE1029266B (de) * 1956-02-27 1958-04-30 Dynamit Nobel Ag Elektrisches Zuendhuetchen fuer Patronen
US3535978A (en) * 1965-06-04 1970-10-27 Dynamit Nobel Ag Method for producing an electrically ignitable primer flement
DE1728411A1 (de) * 1966-10-20 1972-01-05 Kamson Res Ltd Patrone fuer Handfeuerwaffe
US3779167A (en) * 1970-01-21 1973-12-18 Olin Corp Electrical initiator
US4206707A (en) * 1977-11-22 1980-06-10 General Dynamics Corportation Electromagnetic hazard suppression techniques
GB2068087A (en) * 1980-01-25 1981-08-05 Wallop Ind Ltd A pyrotechnic cartridge
US4324060A (en) * 1980-03-17 1982-04-13 Lawrence George L Firearm system
EP0235010A1 (de) * 1986-02-03 1987-09-02 ETAT-FRANCAIS représenté par le DELEGUE GENERAL POUR L'ARMEMENT (DPAG) Kondensatorzündvorrichtung für Treibladung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE33599C (de) * S. RUSSELL in Brooklyn, V. St. A Zündhütchen für elektrische Zündung
DE1029266B (de) * 1956-02-27 1958-04-30 Dynamit Nobel Ag Elektrisches Zuendhuetchen fuer Patronen
US3535978A (en) * 1965-06-04 1970-10-27 Dynamit Nobel Ag Method for producing an electrically ignitable primer flement
DE1728411A1 (de) * 1966-10-20 1972-01-05 Kamson Res Ltd Patrone fuer Handfeuerwaffe
US3779167A (en) * 1970-01-21 1973-12-18 Olin Corp Electrical initiator
US4206707A (en) * 1977-11-22 1980-06-10 General Dynamics Corportation Electromagnetic hazard suppression techniques
GB2068087A (en) * 1980-01-25 1981-08-05 Wallop Ind Ltd A pyrotechnic cartridge
US4324060A (en) * 1980-03-17 1982-04-13 Lawrence George L Firearm system
EP0235010A1 (de) * 1986-02-03 1987-09-02 ETAT-FRANCAIS représenté par le DELEGUE GENERAL POUR L'ARMEMENT (DPAG) Kondensatorzündvorrichtung für Treibladung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402268A1 (de) * 1989-06-09 1990-12-12 Thomson-Brandt Armements Pyrotechnischer Anzünder für wehrtechnische Ladungen oder Raketenmotoren oder Gasgeneratoren
FR2648223A1 (fr) * 1989-06-09 1990-12-14 Thomson Brandt Armements Inflammateur pyrotechnique pour charges militaires ou propulseur ou generateur de gaz
FR2786264A1 (fr) * 1998-11-19 2000-05-26 Tzn Forschung & Entwicklung Cartouche pouvant etre mise a feu a partir d'une arme de gros calibre
FR2786265A1 (fr) * 1998-11-19 2000-05-26 Tzn Forschung & Entwicklung Cartouche pouvant etre mise a feu a partir d'une arme de gros calibre
EP1258695A1 (de) * 2001-05-18 2002-11-20 Giat Industries Geschossboden für eine mit einem elektrischen Zünder versehene Munition
FR2824898A1 (fr) * 2001-05-18 2002-11-22 Giat Ind Sa Culot pour munition destine a recevoir un allumeur electrique
US6644204B2 (en) 2001-05-18 2003-11-11 Giat Industries Base for ammunition intended to receive an electrical igniter squib

Also Published As

Publication number Publication date
FR2621388A1 (fr) 1989-04-07
FR2621388B1 (fr) 1989-12-15
DE3872818T2 (de) 1993-01-21
NO166675C (no) 1991-08-21
NO166675B (no) 1991-05-13
NO884366L (no) 1989-04-03
ATE78333T1 (de) 1992-08-15
DE3872818D1 (de) 1992-08-20
EP0310517B1 (de) 1992-07-15
NO884366D0 (no) 1988-09-30
IL87872A0 (en) 1989-03-31

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