EP1672308A1 - Zündvorrichtung für eine explosive Ladung oder eine pyrotechnische Zusammensetzung - Google Patents

Zündvorrichtung für eine explosive Ladung oder eine pyrotechnische Zusammensetzung Download PDF

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Publication number
EP1672308A1
EP1672308A1 EP05292460A EP05292460A EP1672308A1 EP 1672308 A1 EP1672308 A1 EP 1672308A1 EP 05292460 A EP05292460 A EP 05292460A EP 05292460 A EP05292460 A EP 05292460A EP 1672308 A1 EP1672308 A1 EP 1672308A1
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EP
European Patent Office
Prior art keywords
initiation
initiation device
initiating
peripheral ring
support
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
EP05292460A
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English (en)
French (fr)
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EP1672308B1 (de
Inventor
Jérome Loison
Jean-Luc Renaud Bezot
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.)
Nexter Munitions SA
Original Assignee
Giat Industries SA
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Publication date
Application filed by Giat Industries SA filed Critical Giat Industries SA
Publication of EP1672308A1 publication Critical patent/EP1672308A1/de
Application granted granted Critical
Publication of EP1672308B1 publication Critical patent/EP1672308B1/de
Not-in-force 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
    • F42C19/0838—Primers or igniters for the initiation or the explosive charge in a warhead
    • F42C19/0842—Arrangements of a multiplicity of primers or detonators, dispersed within a warhead, for multiple mode selection
    • 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
    • F42C19/095—Arrangements of a multiplicity of primers or detonators, dispersed around a warhead, one of the primers or detonators being selected for directional detonation effects

Definitions

  • the technical field of the invention is that of devices for initiating an explosive charge or a pyrotechnic composition.
  • Known devices are used in particular to initiate the explosive charges of military heads generating splinters or formed charge (generating a jet or a core). Similarly, in flash charges, it is sometimes necessary to initiate an angular sector to orient the spray. This angular sector being dependent on the desired focus.
  • the initiation devices use at least one initiating component such as a detonator or an igniter.
  • a detonator or an igniter are well known to those skilled in the art.
  • these components include for example a hot wire, a resistive bridge or a semiconductor bridge (known under the name: SCB or "semi conductor bridge") which, when traversed by an electric current, communicates with the energy to an inflammatory or detonating pyrotechnic composition.
  • Patent US5939663 thus describes a multi-function head whose initiation device comprises an axial detonator and a ring of peripheral detonators. All the detonators are connected to initiation means by separate wire connections. Depending on the detonators that are ordered, we obtain a coherent stream or a projection of splinters.
  • the initiation device thus defined is complex and expensive to implement since it requires the mounting of the various detonators on a support which must be positioned precisely in relation to the load so that the desired effect is ensured.
  • the initiation device according to the invention is compact and inexpensive to manufacture. It is adaptable to different types of explosive charges and can reliably ensure the initiation of an explosive charge according to several modes of operation.
  • the field of application of the invention is not limited to multi-mode explosive military heads.
  • the device according to the invention can in fact also be used to initiate a pyrotechnic composition, for example a gas generating composition having several operating regimes (for example a gas generator comprising several gas cartridges that can be selectively initiated).
  • the subject of the invention is an initiation device for an explosive charge or a pyrotechnic composition, comprising at least two initiator means connected to a power source, characterized in that it comprises a single insulating support carrying the means of initiation as well as the conductors ensuring their connection to the source of energy.
  • the initiating means comprise at least one semiconductor bridge.
  • the initiation device according to the invention may comprise at least a first group of initiator means distributed over a peripheral ring.
  • the device may thus comprise initiating means distributed over a peripheral ring and on two orthogonal diametral arms.
  • All initiating means will advantageously comprise a first pad connected to a common conductor.
  • the device may comprise in addition to the common conductor, at least two other control conductors which will each be connected to second pads of two groups of separate initiating means.
  • the device may comprise at least one first control conductor ensuring the initiation of an axial initiator means.
  • It may also include at least one second control conductor ensuring the initiation of a first ring of initiator means distributed on the arms around the axial initiator means.
  • the peripheral ring may, for example, comprise four sectors of initiating means, each of which can be initiated separately by specific control conductors.
  • a formed warhead 1 comprises an explosive charge 2 disposed in a cylindrical envelope 3.
  • a concave coating 4 is applied against the explosive charge 2.
  • the detonation characteristics of the explosive and the geometry of the coating 4 are chosen so that this warhead can have several different modes of operation depending on the initiation mode chosen. These characteristics are well known to those skilled in the art and will not be described here because they are not the subject of the present invention. By way of example, reference may be made to EP1164348, which describes such a multi-function military head.
  • the military head 1 can be initiated by an initiation device 5.
  • the latter comprises a cylindrical housing 6 having substantially the same external diameter as the casing 3 of the military head 1 and closed by a bottom 6a plane on which is arranged a axial opening 7.
  • the housing 6 encloses a single insulating support 8 which carries initiation means 9.
  • a connector 10 is fixed at a rear face of the support 8 and it allows the connection of the initiation device 5 to an electronic control means 11 which incorporates a power source enabling activation of the initiation device 5.
  • the connector 10 leaves the housing through the opening 7.
  • the housing 6 also contains a detonating pyrotechnic composition 12, for example hexanitrostilbene (HNS) or compressed hexogen (RDX), which is applied by compression against the support 8. It could also be used for the composition 12 a sheet plastic explosive, for example an explosive based on rubber and pentrite (explosive known under the trademark Formex).
  • HNS hexanitrostilbene
  • RDX compressed hexogen
  • the housing 6 is fixed to the casing 3 by connecting means not shown here, for example by an outer ring screwed or crimped both on the casing 6 and on the casing 3 so that the military head 1 and the device Initiation 5 may for example form only one compound.
  • a thin flap 13, for example made of aluminum, will be applied to the face of the detonating composition 12 intended to come into contact with the explosive charge 2.
  • This flap will perform a function sealing during storage of the initiation device 5 independently of a military head 1.
  • the support 8 is visible more precisely in FIG. 4. It is made of an insulating material and carries initiation means 9 on one of its surfaces intended to come into contact with the detonating composition 12.
  • FIGS. 3a and 3b show in an enlarged manner two different embodiments of such initiation means 9.
  • FIG. 3a thus shows an initiation means 9 comprising a bridge 15 of semiconductor material which is arranged between two studs 14 conductive material.
  • the semiconductor bridge for example, made of doped silicon and copper pads.
  • the pads have a width opposite the bridge which is less than their width away from the bridge. Such an arrangement makes it easier to initiate the initiation plasma between the pads.
  • FIG. 3b shows another embodiment of an initiation means 9.
  • the pads 14 are connected by a resistive conductive element 16 (for example made of gold).
  • a resistive conductive element 16 for example made of gold.
  • this embodiment also well known to those skilled in the art
  • it is the heating by Joule effect of the resistive element 16 (or explosion) that ensures the initiation of the detonating composition.
  • the various initiation means 9 will be applied to the support 8 according to the integrated circuit manufacturing technology.
  • a support carrying all the initiation means (with a particular geometrical distribution which will be specified later) and conductors (or tracks) will be realized according to this technique.
  • conductive which ensure (via the connector 10) the connection of the initiation means 9 to a power source incorporated in the control means 11.
  • the support 8 may thus be constituted by an amorphous silicon disk on which the initiation means and the conductive tracks will be made by metallization and / or vacuum deposition.
  • FIG. 4 shows that the support 8 carries an axial initiation means 9a and a first group 17 of initiator means 9 distributed over a peripheral ring 18 (there are twenty four initiators 9 regularly distributed angularly on the peripheral ring 18 ).
  • the support 8 also comprises a second group of initiator means 9 distributed over at least one diametral arm.
  • diametral arms 19a and 19b each comprising six initiating means 9. It will be noted that the ends of the diametral arms pass through initiating means 9b, 9c, 9d and 9e which belong to the peripheral ring 18.
  • an upper face of the support carries conductive tracks making it possible to connect the poles of certain initiators to the connector 10.
  • all the initiating means comprise a first pad 14a which is connected to a common conductor C (all the pads connected to the common conductor are shown hatched in FIG. 4).
  • This common circuit passes through the pad 14a of the initiating means 9c and comprises a peripheral circular conductive track 20a and two other internal circular tracks 20b and 20c coaxial with the first.
  • the common circuit also comprises a track 21 connecting the different circular tracks 20a, 20b and 20c of the common circuit.
  • the upper face of the support 8 carries other conductive tracks making it possible to connect together.
  • S2 control driver which provides the initiation of a first ring 22 of four means initiators distributed on the arms 19a and 19b and around the average axial initiator 9a.
  • the poles 14b of these initiators are all connected to each other by a circular portion of track 25.
  • control conductors S2 b and S2 c which ensure the initiation of two other rings 23 and 24 of four initiating means distributed on the arms 19a and 19b and around the axial initiator means 9a.
  • the poles 14b of these initiators are also all connected to each other by a portion of circular track, respectively 26 and 27.
  • the device shown in Figure 4 comprises on its peripheral ring 18 four sectors 28, 29, 30 and 31 which are delimited by the arms 19a and 19b. Each sector comprises five contiguous initiating means.
  • Each of these sectors is controlled by a specific control line (respectively S3, S3 b, S3 c and S3 d).
  • the pads 14b of the initiators are all connected to each other by a portion of circular track. These track portions are in the figure the marks 32, 33, 34 and 35.
  • the peripheral ring 18 there is on the peripheral ring 18 four insulated initiators 9b, 9c, 9d and 9e arranged at the ends of the arms 19a and 19b. Each of these initiators is controlled by a specific control conductor Si b , Si c , Si d and Si e .
  • All the control conductors are connected to the connector 10 which thus comprises at least 13 pins.
  • connections are made in the form of tracks carried by the other side of the support 8 and the connector is also carried by the other face and disposed at the center of the support.
  • FIG. 3c shows the support cut at the level of the initiation means 9c. It can be seen that the studs 14a and 14b partly cover the bridge 15. The stud 14a, which is connected to the common circuit C, covers a metal deposit which constitutes the circular track 20a, deposited on the support 8 on the same side as the means of initiation.
  • a bore 36 passes through the support 8. It allows to connect the two faces of the latter.
  • This piercing, or hole metallized in the language of the skilled person, is filled by a metal deposit 37 which is connected by a weld 39a to the pad 14b and by a weld 39b to a conductive track 38 carried by the underside of the support 8 and which leads to the connector 10.
  • the electronic control means 11 has not been described in detail because it does not constitute the object of the present invention.
  • this control means is designed to send an electric firing current between the common conductor C and one or more of the control conductors S1, S2, S3 .... Si.
  • the choice of drivers who will or will not be powered will be made using a means of programming and / or selection appropriate to the operational needs of the operating mode of the military head.
  • the electronic control means sends a firing current to the only initiation means 9a, therefore between the common conductor C and the control conductor S1 ( Figure 5a).
  • Figure 5b shows how it is possible to initiate such operation.
  • the electronic control means sends a current firing between the common conductor C and all S3 control lines a, S3 b, S3 c and S3 d and all insulated control conductors If b, Si c, If d and Si e . So all the means of initiation 9 of the crown external 18 are simultaneously initiated, both those in groups 28, 29, 30 and 31 that are isolated 9b, 9c, 9d and 9e.
  • the initiation device described here comprises twelve groups of initiation means each of which can be actuated separately. It is therefore possible to obtain other modes of operation of the warhead.
  • FIG. 5c shows an initiation mode in which all the initiating means distributed along the arms 19a and 19b are simultaneously controlled, as well as the isolated means 9b, 9c, 9d and 9e that those of the rings 22, 23 and 24.
  • Such an initiation mode leads to the fragmentation of the coating and to the projection of these fragments according to the direction of action DA of the charge (FIG. 1).
  • FIG. 5d shows an initiation mode in which all the means for initiating the sector 28 of the peripheral ring 18 are simultaneously controlled. Such an initiation mode leads to the projection of the fragments of the envelope 3 of the next charge a preferred direction DB substantially radial and opposite the sector initiated.
  • the device according to the invention makes it possible to obtain, in a simple manner, a means for ensuring the initiation of a multi-function military head.
  • the technologies used are those that make it possible to achieve the individual initiation means. It is not more expensive to implement them to ensure also the realization of all the conductive tracks and thus obtain a complete component ensuring the desired effects.
  • the support bearing its connector 10 is then placed in a simple manner inside its housing 6.
  • the loading of the detonating composition 12 is performed according to the usual loading procedures for the initiators (or by gluing a sheet explosive plastic on the support).
  • the positioning accuracy of the initiation means with respect to the casing of the military head 1 is finally obtained simply by a single operation of fixing the casing 6 on the casing 3.
  • the axial size of the device according to the invention is reduced.
  • the height E can thus be less than 5 mm, which allows the production of extremely compact military heads.
  • initiation devices having a number of different initiation means or groups of initiation means.
  • initiation means 9 are hot-wire or exploded initiators. After manufacture of the support 8 carrying the conductive tracks, it will then be necessary to solder son between the pads of each initiator. Such a mode is however less interesting because more expensive to achieve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
EP05292460A 2004-12-16 2005-11-21 Zündvorrichtung für eine explosive Ladung oder eine pyrotechnische Zusammensetzung Not-in-force EP1672308B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0413471A FR2879732B1 (fr) 2004-12-16 2004-12-16 Dispositif d'initiation pour charge explosive ou composition pyrotechnique

Publications (2)

Publication Number Publication Date
EP1672308A1 true EP1672308A1 (de) 2006-06-21
EP1672308B1 EP1672308B1 (de) 2010-07-28

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EP05292460A Not-in-force EP1672308B1 (de) 2004-12-16 2005-11-21 Zündvorrichtung für eine explosive Ladung oder eine pyrotechnische Zusammensetzung

Country Status (6)

Country Link
US (1) US7434514B2 (de)
EP (1) EP1672308B1 (de)
AT (1) ATE475858T1 (de)
DE (1) DE602005022533D1 (de)
ES (1) ES2349934T3 (de)
FR (1) FR2879732B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8414718B2 (en) * 2004-01-14 2013-04-09 Lockheed Martin Corporation Energetic material composition
WO2008097241A2 (en) * 2006-05-30 2008-08-14 Lockheed Martin Corporation Selectable effect warhead
US8250985B2 (en) * 2006-06-06 2012-08-28 Lockheed Martin Corporation Structural metallic binders for reactive fragmentation weapons
RU2502938C1 (ru) * 2012-08-01 2013-12-27 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом"- Госкорпорация "Росатом" Система инициирования
RU2498200C1 (ru) * 2012-08-08 2013-11-10 Федеральное бюджетное учреждение "12 Центральный научно-исследовательский институт Министерства обороны Российской Федерации" Контактно-секторный заряд из листового взрывчатого вещества

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598051A (en) * 1968-07-25 1971-08-10 Us Navy Directional warhead
US3695178A (en) * 1970-11-09 1972-10-03 Robert E Betts Delta squib circuit
US3877376A (en) * 1960-07-27 1975-04-15 Us Navy Directed warhead
US4026213A (en) * 1971-06-17 1977-05-31 The United States Of America As Represented By The Secretary Of The Navy Selectively aimable warhead
US5182418A (en) * 1965-06-21 1993-01-26 The United States Of America As Represented By The Secretary Of The Navy Aimable warhead
FR2704052A1 (fr) * 1993-04-14 1994-10-21 Thomson Brandt Armements Charge formée multiamorçable.
DE4011243C1 (de) 1990-04-06 1996-05-09 Diehl Gmbh & Co Gefechtskopf mit Splitterwirkung
EP0748999A1 (de) * 1995-06-13 1996-12-18 Tda Armements S.A.S. Gefechtskopf, insbesondere mit Hohlladung
US5939663A (en) 1996-02-14 1999-08-17 The United States Of America As Represented By The Secretary Of The Army Method for dispersing a jet from a shaped charge liner via multiple detonators

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US3472165A (en) * 1963-03-28 1969-10-14 Us Air Force Warhead
US5450794A (en) * 1963-11-29 1995-09-19 Drimmer; Bernard E. Method for improving the performance of underwater explosive warheads
US3443518A (en) * 1967-09-26 1969-05-13 Donald W Cross Multi-point ignition system for shaped charges
US3703865A (en) * 1968-02-28 1972-11-28 Us Navy Electronically controlled aimed blast warhead
US3995574A (en) * 1974-07-29 1976-12-07 Drimmer Bernard E Dynamic method for enhancing effects of underwater explosions
DE3329969C1 (en) * 1983-08-19 1990-06-13 Fraunhofer Ges Forschung Device for producing explosive-formed projectiles
US4862804A (en) * 1985-05-22 1989-09-05 Western Atlas International, Inc. Implosion shaped charge perforator
US6393991B1 (en) * 2000-06-13 2002-05-28 General Dynamics Ordnance And Tactical Systems, Inc. K-charge—a multipurpose shaped charge warhead
US6598532B2 (en) * 2001-08-14 2003-07-29 Donald G. Gerard Electric circuit for an electrically dischargeable primer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877376A (en) * 1960-07-27 1975-04-15 Us Navy Directed warhead
US5182418A (en) * 1965-06-21 1993-01-26 The United States Of America As Represented By The Secretary Of The Navy Aimable warhead
US3598051A (en) * 1968-07-25 1971-08-10 Us Navy Directional warhead
US3695178A (en) * 1970-11-09 1972-10-03 Robert E Betts Delta squib circuit
US4026213A (en) * 1971-06-17 1977-05-31 The United States Of America As Represented By The Secretary Of The Navy Selectively aimable warhead
DE4011243C1 (de) 1990-04-06 1996-05-09 Diehl Gmbh & Co Gefechtskopf mit Splitterwirkung
FR2704052A1 (fr) * 1993-04-14 1994-10-21 Thomson Brandt Armements Charge formée multiamorçable.
EP0748999A1 (de) * 1995-06-13 1996-12-18 Tda Armements S.A.S. Gefechtskopf, insbesondere mit Hohlladung
US5939663A (en) 1996-02-14 1999-08-17 The United States Of America As Represented By The Secretary Of The Army Method for dispersing a jet from a shaped charge liner via multiple detonators

Also Published As

Publication number Publication date
FR2879732A1 (fr) 2006-06-23
FR2879732B1 (fr) 2010-03-19
DE602005022533D1 (de) 2010-09-09
US20080092764A1 (en) 2008-04-24
ES2349934T3 (es) 2011-01-13
ATE475858T1 (de) 2010-08-15
EP1672308B1 (de) 2010-07-28
US7434514B2 (en) 2008-10-14

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