EP0163899B1 - Système d'amorçage d'une cartouche dans un canon - Google Patents

Système d'amorçage d'une cartouche dans un canon Download PDF

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Publication number
EP0163899B1
EP0163899B1 EP85104903A EP85104903A EP0163899B1 EP 0163899 B1 EP0163899 B1 EP 0163899B1 EP 85104903 A EP85104903 A EP 85104903A EP 85104903 A EP85104903 A EP 85104903A EP 0163899 B1 EP0163899 B1 EP 0163899B1
Authority
EP
European Patent Office
Prior art keywords
magnetic
breech
weapon
coils
primary coil
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
EP85104903A
Other languages
German (de)
English (en)
Other versions
EP0163899A3 (en
EP0163899A2 (fr
Inventor
Uwe Brede
Gerhard Kordel
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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Filing date
Publication date
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of EP0163899A2 publication Critical patent/EP0163899A2/fr
Publication of EP0163899A3 publication Critical patent/EP0163899A3/de
Application granted granted Critical
Publication of EP0163899B1 publication Critical patent/EP0163899B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/58—Electric firing mechanisms
    • F41A19/63—Electric firing mechanisms having means for contactless transmission of electric energy, e.g. by induction, by sparking gap

Definitions

  • the invention relates to a system for firing a cartridge in a barrel weapon according to the preamble of the main claim.
  • DE-OS 27 34 169 and DE-OS 30 24 554 devices for the contactless transmission of electrical energy for pyrotechnic detonators, in particular in electrically controllable weapons are known.
  • the electrical ignition energy is transmitted contactlessly according to the transformer principle, the charge space of the ammunition being hermetically sealed by a fixed partition made of non-magnetic material.
  • the primary system for excitation of the secondary coil in the primer is housed in these known systems in the weapon breech.
  • the weapon breech designed according to the invention can be checked with regard to its instantaneous position and also with regard to its state of wear, since the primary coil (s) in connection with the magnetically conductive transmission elements in the breech represents one (or more) inductive measuring sensors which can be used in a manner known per se .
  • the non-magnetic material which surrounds the magnetic energy-transmitting elements is advantageously selected or constructed such that there is a high electrical resistance in at least one direction perpendicular to the magnetic field lines acting.
  • this can be done simply by the choice of the material, on the other hand, layer arrangements are also suitable for this purpose, which either have layers of low conductivity at regular intervals or have high electrical resistance at the connecting surfaces.
  • this sandwich construction facilitates the manufacture of the closure, in particular, since it must not have any “defects” in accordance with the high loads that occur.
  • the process of explosive plating is advantageously used.
  • the position of the closure with the magnetic transmission elements located therein can be done simply by measuring the coil inductance, since this is also determined by the position of the magnetic transmission elements in the closure relative to the coil core. Furthermore, from the inductance of the coil when the closure is closed, conclusions can be drawn about the state of wear of the closure, since the air gaps between the core of the primary coil and the magnetic transmission elements in the closure change when worn.
  • the measurement method explained above is also possible in a system with several primary coils.
  • one of the coils is advantageously used as a transmitter coil for a measurement signal, and one or more further coils are used as receiver coils.
  • the arrangement thus created can then be used in a manner similar to a differential transformer sensor.
  • 1 denotes the rear part, 1 'the non-magnetic part and 3 the butt plate of the closure.
  • the breech 1 is movable and can be moved in the drawings to the left in the weapon housing 8.
  • the cartridge chamber 4 there is a cartridge 22 which is provided with an ignition cap 21 which contains the secondary coils with a core and electrical ignition means.
  • FIGS. 1 and 2 A first preferred embodiment of the invention is explained in more detail below with reference to FIGS. 1 and 2.
  • this embodiment there is a non-magnetic insert 1 'of the breech concentrically with a pressed-in bolt 5 made of magnetically conductive material, the strength of which is so high that the shot load cannot cause any deformation.
  • the bolt 5 forms a plane with the non-magnetic impact floor 3.
  • the bolt 5 is supported by the non-magnetic insert 1 '.
  • four round rods 6 made of magnetically conductive material are pressed into the non-magnetic insert 1 'at an angular distance of 90 ° to one another and to the bolt 5.
  • the round rods 6 and the bolt 5 are geometrically matched to one another so that there is no air gap between the bolt 5 and the round rod 6, so that the magnetic losses remain low.
  • the closure is shown in the fully closed state, that is to say ready for fire.
  • the bolts 6 are exactly opposite the cores 11 of the primary coils 15-18, the arrangement being such that there is only a minimal air gap between the core 11 and the round rod 6.
  • the cores 11 of the coils 15-18 are connected to the weapon housing 8 made of magnetically conductive material.
  • non-magnetic material 9 (see FIG. 2). Since this material encloses the cores 11 and the non-magnetic material 1 'round rods 6, care must be taken that this material has a low electrical conductivity at least in one direction perpendicular to the magnetic flux, since otherwise the non-magnetic material acts as a short-circuit turn, which leads to high losses brings with it.
  • the radial branches 6 of the magnetically conductive transmission elements are formed by a single, essentially circular plate which is constructed in a layered manner in order to avoid magnetic reversal losses.
  • the bolt 5 which is coaxial with the closure and which is conically shaped at its end which engages in the plate 6 in order to achieve a particularly firm connection.
  • the bolt 5 can of course also be constructed again in a layered construction, in which case coaxial layers or rods which are firmly connected to one another (e.g. with a hexagonal cross section) can be provided for the closure.
  • a further essentially rotationally symmetrical protective ring is provided between the closure 1, 1 'and the primary coils with cores 11, which consists of layers of magnetically non-conductive material 12, 12' and magnetically conductive material. 13 exists.
  • the layers 12, 12 ', 13 are preferably constructed again as lamellar bodies, whereby on the one hand the eddy current losses mentioned and on the other hand magnetic losses in the components are kept low. With this arrangement, a particularly good seal of the closure to the primary coils 15-18 is ensured.
  • the coil cores 11 are in the case in FIG. 3 shown example as sheet metal packages, as usual in transformer construction, executed. This construction is of course essentially suitable for all of the embodiments shown here.
  • FIG. 1 A further preferred embodiment is shown in longitudinal section in FIG.
  • the magnetic flux is not guided over the weapon housing 8 as in the embodiments according to FIGS. 1-3, but is coupled "bipolar" in the axial direction into the primer 21 through the breech 1 or its non-magnetic sections 1 '.
  • the coils 15-18 are seated on cores with a U-shaped cross section, the two legs 11, 11 'of which are spaced apart from one another in the axial direction.
  • the rear coil core 11 faces the radial branch 6 when the closure is closed, which is in a magnetically conductive connection with the coaxial bolt 5.
  • the leg 11 ' is opposite the radial branch 6' of a further magnetically conductive transmission element, which opens into an axial branch 5 ', which also ends flush with the butt plate 8.
  • the embodiment shown in FIG. 5 is also a two-pole version, the longitudinal section of which corresponds to that of FIG. 1.
  • the two magnetic poles are not spaced apart from one another in the axial direction, but lie in the same cross-sectional plane and are separated from one another by an angular distance.
  • the connection between the cores 11, 11 ' is made at one end via the weapon housing 8.
  • the coils 15 and 17 are thus wound in the same direction, the coils 16 and 18 in the opposite sense, while in all the embodiments shown above, the coils are wound in the same direction.
  • FIG. 1 Another preferred embodiment is shown in FIG.
  • the closure 1, 1 ' is enclosed by a single coil 15, the magnetic field of which is coupled into the magnetically conductive transmission elements 5, 6 and 5', 6 'by cores 11, 11'.
  • the primary coil 15 with cores 11 and 11 ' is separated from the weapon housing by a shield 14 made of magnetically non-conductive material.
  • FIGS. 7 and 9 Perspective sketches 7-10, which are explained below, are intended to facilitate understanding of the sectional drawings shown above.
  • the longitudinal sections through the weapon breeches according to FIGS. 7 and 9 and through the primary coil arrangements 8 and 10 result in an image corresponding to FIG. 4.
  • FIG. 7 shows how the transmission elements made of magnetically conductive material can be constructed in a sandwich construction as well as the front closure part 1 'made of non-magnetic material.
  • Appropriate material combinations can on the one hand reduce the eddy current losses in the non-magnetic material 1 ', and on the other hand the magnetic reversal losses in the magnetically conductive transmission elements can be minimized.
  • Explosive plating technology is very well suited for connecting the layers to one another, as it allows a high-strength connection between materials that are otherwise difficult to connect. In this way, a closure with particularly good electrical, magnetic and mechanical properties can be produced.
  • FIG. 8 shows a preferred embodiment of the primary coil core, in which the coils 15, 17 sit on cores 11 which are connected to the annular core section 11 'by a tubular yoke.
  • FIG. 9 A further preferred embodiment of the closure part is shown in FIG. 9, in which circular pole shoes 5, 5 'are formed by the coaxial arrangement.
  • FIG. 10 shows the structure of layered primary coil cores, as advantageously used in the embodiments according to FIG. 4.
  • FIG. 1 shows that the primer 21 in the cartridge 22 contains a secondary coil, the core of which ends axially with one pole and radially with the other pole.
  • the two magnetic poles of the secondary coil face the axial pole piece 5 and the radial pole piece formed by the weapon housing 8.
  • the breech 1, 1 'contains only passive components namely the magnetically conductive transmission elements 5 and 6, while in the weapon housing 8 the primary coils 15-18 with the associated cores 11 - the most sensitive parts of the device - are included.
  • the primary coils 15-18 are already electrically and magnetically connected in parallel in the weapon housing 8. This circuit results in a redundant system if the primary coils are fed in such a way that the magnetic field of a single primary coil is strong enough to apply the necessary ignition energy.
  • the primary coils 15-18 are connected to the electronic weapon control unit.
  • this weapon control unit contains an alternating current source, which supplies the current required to excite the primary coils.
  • there are 20 measuring devices in the weapon control unit by means of which the operating state and the state of wear of the breech system can be checked.
  • an inductance measuring system is suitable for this. The inductance of the primary coils changes with the position of the breech 1, 1 'or the pole shoes 6 relative to the weapon housing 8 or the primary coil cores II.
  • FIG. 12 shows the two-pole embodiment of the weapon lock according to the invention in a schematic form, the electrical connection of the primary coils 15-18 being identical to that according to FIG.
  • This figure shows that the entire magnetic energy is transmitted by the transmission element made of magnetically conductive material in the weapon breech 1, 1 ', the weapon housing 8 is thus not limited to magnetically sufficiently conductive materials. Nevertheless, in this embodiment, too, only "passive" components, namely magnetic yokes, are located in the closure.
  • the circuit arrangement according to FIG. 13 corresponds magnetically to that according to FIG. 12, but the feed lines of the primary coils 15-18 are each led separately into the weapon control unit 20. With a correspondingly high level of circuitry, it is of course also possible for one connection pole of the primary coils to be routed together via the weapon housing 8.
  • the electrical circuit shown in FIG. 13 there is a further possibility of checking the closure with regard to its position and its wear.
  • primary coils that can be used separately, at least one of the coils can be used as a transmitter coil for an alternating measurement field, and the other coils can be used as receiver coils.
  • the wear state of the closure can be measured by measuring the inductances of the individual coils, a differential inductance measurement between two opposing coils being particularly suitable for achieving a sensitive measuring system.
  • the arrangement according to the invention therefore makes it possible to produce an overall particularly reliable weapon breech which achieves this high level of operational reliability through a sum of individual features which support one another in their effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Claims (9)

1. Système de mise à feu d'une cartouche dans une arme à tube, dans lequel l'énergie d'allumage peut être transmise inductivement d'une bobine primaire dans le bâti de l'arme à une bobine secondaire approximativement agencée à peu près symétriquement à l'axe dans la cartouche et, de là, dans un moyen d'amorçage, lorsque la cartouche dans le corps de l'arme est appliquée contre la culasse, caractérisé par le fait qu'au moins une bobine primaire (15-18) est agencée dans le corps (8) à hauteur de la culasse (3), toutefois en dehors de celle-ci, et par le fait que des éléments de transmission magnétiquement conducteurs (5, 5', 6) sont agencés dans la culasse (1, 1') de manière à coupler inductivement, en tant que culasse magnétique, la ou les bobine(s) primaire(s) (15-18) à la bobine secondaire.
2. Système selon revendication 1, caractérisé par le fait qu'au moins dans la région contenant les éléments de transmission (5, 5', 6), la culasse est réalisée en matériau non magnétique (1 ').
3. Système selon revendication 2, caractérisé par le fait que le matériau non magnétique présente une grande résistance électrique, au moins dans une direction perpendiculaire aux lignes de champ magnétique actives.
4. Système selon l'une des revendications précédentes, caractérisé par le fait que le système de transmission (5, 5', 6) est constitué par des barres rondes.
5. Système selon l'une des revendications 1 à 3, caractérisé par le fait que le système de transmission est constitué par une plaque circulaire (6) avec téton (5).
6. Système selon l'une des revendications précédentes, caractérisé par une construction en sandwich de la culasse dans la région (1') contenant les éléments de transmission, et/ou des éléments de transmission (5, 5', 6).
7. Système selon revendication 6, caractérisé par le fait que les parties de l'agencement en sandwich sont mutuellement liées par placage par explosion.
8. Système selon l'une des revendications précédentes, caractérisé par le fait que la bobine primaire ou l'une des bobines primaires (15―18) est reliée à un circuit (20) de contrôle de l'état de la culasse et/ou de la ou des bobine(s) primaire(s) (15-18).
9. Système selon l'une des revendications précédentes, caractérisé par le fait qu'au moins pendant la mise à feu, plusieurs bobines primaires (15-18) sont disposées en circuit électrique et magnétique parallèle.
EP85104903A 1984-05-11 1985-04-23 Système d'amorçage d'une cartouche dans un canon Expired - Lifetime EP0163899B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3417614 1984-05-11
DE19843417614 DE3417614A1 (de) 1984-05-11 1984-05-11 Waffenverschluss mit einem induktiven zuendenergie-uebertragungssystem

Publications (3)

Publication Number Publication Date
EP0163899A2 EP0163899A2 (fr) 1985-12-11
EP0163899A3 EP0163899A3 (en) 1987-02-25
EP0163899B1 true EP0163899B1 (fr) 1990-10-17

Family

ID=6235642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104903A Expired - Lifetime EP0163899B1 (fr) 1984-05-11 1985-04-23 Système d'amorçage d'une cartouche dans un canon

Country Status (4)

Country Link
US (1) US4653211A (fr)
EP (1) EP0163899B1 (fr)
DE (2) DE3417614A1 (fr)
IL (1) IL75144A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836721A1 (de) * 1988-10-28 1991-10-31 Rheinmetall Gmbh Induktive anzuendvorrichtung
DE4004848A1 (de) * 1990-02-16 1991-08-22 Wegmann & Co Vorrichtung zum induktiven zuenden der treibladung von wurfkoerpern und geschossen, insbesondere in einem wurfsystem fuer nebelkerzen, sprengkoerper u. dgl.
US5233902A (en) * 1992-05-11 1993-08-10 The United States Of America As Represented By The Secretary Of The Navy Sliding breech block system for repetitive electronic ignition
US5827958A (en) * 1996-01-05 1998-10-27 Primex Technologies, Inc. Passive velocity data system
DE19706863A1 (de) * 1996-12-11 1998-06-18 Dynamit Nobel Ag Induktives Zündsystem, insbesondere für Infanteriewaffen
EP0961912B1 (fr) * 1997-02-21 2003-03-05 Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Systeme d'allumage par induction, notamment pour armes d'infanterie
US7757607B1 (en) * 2005-08-17 2010-07-20 Deye James G Remotely controlled ignition system for pyrotechnics
US8256338B1 (en) 2010-01-06 2012-09-04 The United States Of America As Represented By The Secretary Of The Navy Weapon and weapon station system and method for loading, testing, targeting, and launching a weapon

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459854A (en) * 1946-04-18 1949-01-25 Jr Willard E Swift Grenade projector
FR2159787A5 (fr) * 1971-11-12 1973-06-22 France Etat
US4207796A (en) * 1974-06-20 1980-06-17 The United States Of America As Represented By The Secretary Of The Navy Ordnance induction firing system
FR2363777A1 (fr) * 1976-09-01 1978-03-31 Signaux Entr Electriques Dispositif de transmission d'energie electrique sans contact, notamment pour inflammateurs pyrotechniques
FR2438820A1 (fr) * 1978-10-13 1980-05-09 France Etat Dispositif electrique d'allumage d'une substance pyrotechnique
DE3024554C2 (de) * 1980-06-28 1985-06-05 Dynamit Nobel Ag, 5210 Troisdorf Anordnung zur kontaktlosen Übertragung elektrischer Energie auf Flugkörper bei deren Abschuß
US4449441A (en) * 1982-03-09 1984-05-22 Westinghouse Electric Corp. Electromagnetic projectile launcher with magnetic spin stabilization

Also Published As

Publication number Publication date
DE3417614A1 (de) 1985-11-14
DE3580123D1 (de) 1990-11-22
EP0163899A3 (en) 1987-02-25
IL75144A0 (en) 1985-09-29
US4653211A (en) 1987-03-31
EP0163899A2 (fr) 1985-12-11
IL75144A (en) 1991-11-21

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