EP1116930A1 - Dispositif d'allumage électrique pour un projectile explosif du type tandem - Google Patents

Dispositif d'allumage électrique pour un projectile explosif du type tandem Download PDF

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Publication number
EP1116930A1
EP1116930A1 EP00850009A EP00850009A EP1116930A1 EP 1116930 A1 EP1116930 A1 EP 1116930A1 EP 00850009 A EP00850009 A EP 00850009A EP 00850009 A EP00850009 A EP 00850009A EP 1116930 A1 EP1116930 A1 EP 1116930A1
Authority
EP
European Patent Office
Prior art keywords
warhead
explosive charge
ammunition
arrangement
arrangement according
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
EP00850009A
Other languages
German (de)
English (en)
Other versions
EP1116930B1 (fr
Inventor
Pär Andersson
Richard Lindvall
Per Olson
Lars-Ake Wall
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.)
Bofors Carl Gustaf AB
Original Assignee
Bofors Carl Gustaf AB
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 Bofors Carl Gustaf AB filed Critical Bofors Carl Gustaf AB
Priority to DK00850009T priority Critical patent/DK1116930T3/da
Priority to ES00850009T priority patent/ES2238984T3/es
Priority to AT00850009T priority patent/ATE295957T1/de
Priority to DE60020207T priority patent/DE60020207T2/de
Priority to EP00850009A priority patent/EP1116930B1/fr
Publication of EP1116930A1 publication Critical patent/EP1116930A1/fr
Application granted granted Critical
Publication of EP1116930B1 publication Critical patent/EP1116930B1/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
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/10—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge
    • F42B12/16—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge in combination with an additional projectile or charge, acting successively on the target
    • F42B12/18—Hollow charges in tandem arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/06—Electric fuzes with time delay by electric circuitry

Definitions

  • the present invention relates to an ammunition arrangement in the form of a shell or similar comprising at least a first and a second warhead situated axially behind one another and at least one delay arrangement.
  • the first warhead constitutes the front warhead of the ammunition arrangement with a first explosive charge and a first sensor arrangement and the second warhead constitutes the rear warhead of the ammunition arrangement with a second explosive charge and a second sensor arrangement.
  • At least one explosive charge situated behind the first warhead is initiated either at the expiry of a predetermined time delay determined by the delay arrangement after the detection of a hit by the sensor arrangement for an explosive charge situated in front or at the time of the detection of a hit by the explosive charge's sensor, whichever is the earlier.
  • An ammunition arrangement of this kind is previously known through European Patent B1 0497394.
  • hits are detected through the sensing of shock waves by means of piezoelectric crystals.
  • a piezoelectric crystal adjacent to the rear explosive charge is thereby used both to determine the time of impact of the front explosive charge on a target, thereby starting the measurement of time in the time delay arrangement, and for the detection of a new shock wave, caused for example by explosive armour, for the direct initiation of the rear explosive charge.
  • the known ammunition arrangement exhibits a number of limitations affecting, for example, speed of operation, differential resolution and flexibility.
  • the known ammunition arrangement is incapable of differentiating between shock waves occurring with a short time delay between, but requires the first shock wave to have subsided in the arrangement before the arrangement can once again be made ready to sense new shock waves.
  • the rear explosive charge is thereby insensitive to direct initiation immediately following initiation of the front explosive charge. In the event that the shock wave for the initiation of the front explosive charge is absent, no initiation of the rear explosive charge takes place if it is subjected to a hit. In this case, initiation of the rear explosive charge requires the sensor element to be subjected to double shock waves well separated in time.
  • the purpose of the present invention is to produce an ammunition arrangement which does not exhibit the aforementioned limitations.
  • the purpose of the invention is achieved by means of an ammunition arrangement characterized in that at least one sensor arrangement associated with a warhead situated behind the first warhead comprises a contact sensor adjacent to the front part of that warhead and/or jacket.
  • the term contact sensor as used both above and in the following description includes sensors having the function of either closing or breaking a circuit or combinations of these functions.
  • the ammunition arrangement's second explosive charge in the rear warhead is made capable of direct initiation throughout the attack phase.
  • An ammunition arrangement in accordance with the invention in the form of a contact sensor provides rapid and adequate initiation of the charge when it is subjected to a hit, for example in the form of shrapnel from explosive armour or the like.
  • the rear explosive charge in a shell with two explosive charges, can be equipped with a sensor arrangement in the form of a contact sensor, see European Patent B1, 0 238 715. In this case, however, it is a question of two explosive charges which are initiated quite independently of each other. The rear explosive charge is not initiated until its contact sensor make contact with the target. The time difference between the initiation of the explosive charges arises due to the path difference between the sensor arrangements of the explosive charges. The written description does not in any way touch upon the problem of explosive armour. If the rear explosive charge is hit before the front explosive charge is hit, the effect of the rear charge is affected in that it is then fired into the front explosive charge.
  • the contact sensor is arranged, when a hit is detected, to initiate all warheads in front of it. This embodiment ensures that those explosive charges lying in front of it are removed from the path of the contact sensor's explosive charge.
  • a constituent contact sensor comprises two or more concentric and mutually insulated shells the impedance characteristics of which are sensed.
  • This embodiment permits a relatively large sensing surface to be achieved by simple means.
  • a constituent contact sensor comprises one or more electrically conducting coils the impedance characteristics of which are sensed.
  • the electrical coils may then advantageously be positioned round an essentially cylindrical part of the jacket of the ammunition arrangement.
  • a constituent contact sensor comprises an outer and an inner shell arranged essentially cylindrically and forming a shoulder-like front part of an explosive charge situated behind the front warhead.
  • This embodiment permits simple integration into designs involving two or more explosive charges with minimal effect on the other properties of the ammunition arrangement such as air resistance etc.
  • This embodiment also permits the inner shell to be formed as part of the warhead structure.
  • a constituent sensor comprises two concentric and essentially cylindrical shells arranged round an essentially cylindrical part of the jacket surrounding a warhead situated behind the front warhead.
  • This embodiment gives a large sensing surface area.
  • the inner of the contact sensor's two cylindrical shells it is an advantage for the inner of the contact sensor's two cylindrical shells to be located at a distance from the warhead's explosive charge.
  • the invention is suitable both for embodiments with two warheads and for embodiments with three or more warheads.
  • An advantageous embodiment with at least three warheads is characterized in that at least two of the warheads situated behind the front warhead are equipped with sensor arrangements comprising contact sensors adjacent to the front part of the respective warhead and/or jacket.
  • the predetermined time delay following the detection of a hit by the sensor arrangement for an explosive charge in front is related to the initiation of the nearest explosive charge in front and, in another embodiment, related to the initiation of the first explosive charge.
  • the delay arrangements associated with the warhead(s) situated behind the first warhead are arranged in a space in the rear warhead and within its sensor arrangement.
  • the delay arrangements associated with the warheads are situated in the space of the respective warhead in front of the explosive charge and within its sensor arrangement.
  • Figure 1 shows in cross section a schematic first example of an ammunition arrangement according to the invention in the form of a shell with a front and a rear explosive charge.
  • Figure 2 shows schematically and in cross section the front part of the rear explosive charge constituent in the ammunition arrangement according to Figure 1.
  • Figure 3 shows a partial cross-sectional view of another example of an ammunition arrangement according to the invention with two warheads.
  • Figure 4 shows schematically and in block form an example of an electronic part which can be incorporated in an ammunition arrangement according to the invention with two warheads.
  • Figure 5 shows a partial cross-sectional view of a schematic first example of an ammunition arrangement according to the invention with three warheads.
  • Figure 6 shows a partial cross-sectional view of a schematic second example of an ammunition arrangement according to the invention with three warheads.
  • Figure 7 shows a first example of an electronic part which can be incorporated in an ammunition arrangement according to the invention with three warheads.
  • Figure 8 shows a second example of an electronic part which can be incorporated in an ammunition arrangement according to the invention with three warheads.
  • Figure 1 shows an ammunition arrangement in the form of a shell 1 with a front warhead part 19 comprising a front explosive charge 2 and a rear warhead part 20 comprising a rear explosive charge 3. At least the rear explosive charge will preferably be of the jet-forming or projectile-forming type of shaped charge.
  • the front explosive charge 2 is equipped with a sensor arrangement 4 of some conventionally known kind and is therefore not shown in greater detail.
  • the sensor arrangement can also be built up according to the principles described below for the sensor arrangements situated behind.
  • the sensor arrangement 4 initiates, on contact with the target and/or shrapnel hit, the ignition of the front explosive charge 2 and starts the time delay for initiation of the rear explosive charge.
  • the rear explosive charge 3 is equipped with a sensor arrangement 5 situated adjacent to the front part of the rear explosive charge.
  • the sensor arrangement is of the contact type and consists, as is more clearly evident from Figure 2, of an inner and an outer shell 6 and 7 respectively, separated by an insulating space 8.
  • Shells 6, 7 have limiting surfaces shaped in the form of the surface of a truncated cone.
  • the outer shell 7 also constitutes the outer limit for the front part of the rear explosive charge.
  • the insulating space 8 can be filled with air or other suitable insulating material.
  • the inner shell 6 can be formed as part of the warhead structure.
  • the explosive charges 2, 3 each include their detonating arrangements 9,10 with ignition and safety functions situated adjacent to the rear part of the respective explosive charge.
  • the detonating arrangements 9,10 is initiated from the sensor arrangements 4,5.
  • a cable 14 connects the sensor arrangement 4 with an electronic circuit 13.
  • a cable 17 connects the sensor arrangement 5 with the same electronic circuit 13.
  • the detonating arrangements 9 and 10 are connected to the electronic circuit 13 by cables 15, 16.
  • the electronic circuit 13 comprises, see Figure 4, a delay arrangement 11 and a logic circuit in the form of two OR-gates 12,18.
  • a space formed between the sensor arrangement 5 and the front part of the rear explosive charge is arranged to contain the electronic circuit.
  • the sensor arrangement 4 detects target contact and the front explosive charge is initiated via the detonating arrangement 9. Coincident in time with the initiation of the front explosive charge 2, a delay arrangement 11 is started from the sensor arrangement 4.
  • the sensor arrangement 5 is not subjected to shrapnel from explosive armour or other effect which leads to contact between the sensor arrangement's two shells prior to the initiation of the explosive charge 3.
  • the rear explosive charge 3 is initiated via the detonating arrangement 10 of the electronic circuit 13 only after the elapse of a time delay predetermined by the delay arrangement 11.
  • the sensor arrangement 5 in front of the rear explosive charge is subjected, prior to the initiation of the rear explosive charge via the delay arrangement 11, to hits which cause a short circuit between the sensor arrangement's two shells, the rear explosive charge is initiated directly via the OR-gate 12 and the detonating arrangement 10.
  • both the front explosive charge, via the detonating arrangement 9, and the rear explosive charge, via detonating arrangement 10, will immediately be initiated.
  • the rear warhead part 20 has been equipped with a sensor arrangement which also comprises two concentric, essentially cylindrical shells 21, 22. Between these shells 21, 22 there is a layer of air or other insulating material. These shells 21, 22 are fitted round a cylindrically shaped part of the jacket of the rear warhead part 20. Shrapnel or the like which hit shells 21, 22 cause a short circuit between the shells. This short circuit is identifiable as a clear change in impedance.
  • the shells are arranged at a distance from the explosive charge 3 and are separated by a layer 24 which, for example, have a thickness of several tens of millimetres, e.g. 50 mm. As a result of the introduction of this layer 24, which can for example consist of air, there is a greater possibility of being able to detonate the explosive charge 3 before shrapnel, which hit the sensor arrangement, can reach the explosive charge 3.
  • Figure 5 shows a first example of an ammunition arrangement with three warhead parts 30, 40, 50 containing explosive charges 31, 41, 51.
  • the intermediate and rear explosive charges 41, 51 are in this case equipped with a number of electrically conducting coils 42 and 52 surrounding a cylindrically shaped part of the respective warhead jackets.
  • the coils are enclosed within insulating layers 43, 53.
  • the coils form part of an associated sensor arrangement of which the impedance characteristics are sensed.
  • an electronic part 44 In the space in front of the explosive charge 41 of the intermediate warhead 40, there is fitted an electronic part 44. Similarly, an electronic part 54 is fitted in the space in front of the explosive charge 51 of the rear warhead 50.
  • the electronic parts 44, 54 are connected with the sensor arrangements 35; 42, 45; 52,55 and the detonating arrangements 36, 46, 56. The initiation sequence is described in more detail later with reference to Figure 7.
  • the second example of an ammunition arrangement with three explosive charges shown in Figure 6 differs from the first example in that the electronic parts are assembled in a common electronic part 54 fitted in the space in front of the explosive charge 51 of the rear warhead 50.
  • the initiation sequence is described in more detail later with reference to Figure 8.
  • the intermediate warhead comprises an electronic part 44 and the rear warhead an electronic part 54.
  • the electronic part 44 incorporates a delay arrangement 64 and two OR-gates 61, 62.
  • the electronic part 54 comprises a delay arrangement 65 and an OR-gate 63.
  • An ammunition arrangement which reaches its target without being hit by shrapnel or the like is initiated by the sensor arrangement 35 which immediately causes detonation of the explosive charge 31, detonation of the explosive charge 41 after a time delay ⁇ 1 introduced through the delay circuit 64 and detonation of explosive charge 51 after a further time delay ⁇ 2 introduced through the delay circuit 65.
  • the explosive charges 31 and 41 are immediately detonated while the explosive charge 51 waits for a time delay ⁇ 2 in the delay circuit 65 before it detonates. If the sensor arrangement 52, 55 detects a hit during the time delay ⁇ 2 in the delay circuit 65, explosive charge 51 is detonated directly.
  • the ammunition arrangement has been equipped with a common electronic part 54 fitted in a space in the rear warhead.
  • the electronic part comprises components corresponding to those in the electronic parts 44 and 54 described with reference to Figure 7.
  • the time delay sequence for the rear warhead 51 is in this case initiated directly from the sensor arrangement 35.
  • the time delay introduced by the delay circuit 65 is in this case suitably longer than ⁇ 1 and can, for example, amount to a delay corresponding to ⁇ 1 + ⁇ 2 for the exemplary embodiment according to Figure 7.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Elimination Of Static Electricity (AREA)
  • Plasma Technology (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Air Bags (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP00850009A 2000-01-17 2000-01-17 Dispositif d'allumage électrique pour un projectile explosif du type tandem Expired - Lifetime EP1116930B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK00850009T DK1116930T3 (da) 2000-01-17 2000-01-17 Elektrisk tændingssystem til et projektil med eksplosive ladninger i tandem
ES00850009T ES2238984T3 (es) 2000-01-17 2000-01-17 Sistema de ignicion electrica para un proyectil con cargas explosivas tipo tandem.
AT00850009T ATE295957T1 (de) 2000-01-17 2000-01-17 Zündeinrichtung zum zünden eines tandemgefechtskopfes
DE60020207T DE60020207T2 (de) 2000-01-17 2000-01-17 Zündeinrichtung zum Zünden eines Tandemgefechtskopfes
EP00850009A EP1116930B1 (fr) 2000-01-17 2000-01-17 Dispositif d'allumage électrique pour un projectile explosif du type tandem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00850009A EP1116930B1 (fr) 2000-01-17 2000-01-17 Dispositif d'allumage électrique pour un projectile explosif du type tandem

Publications (2)

Publication Number Publication Date
EP1116930A1 true EP1116930A1 (fr) 2001-07-18
EP1116930B1 EP1116930B1 (fr) 2005-05-18

Family

ID=8175633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00850009A Expired - Lifetime EP1116930B1 (fr) 2000-01-17 2000-01-17 Dispositif d'allumage électrique pour un projectile explosif du type tandem

Country Status (5)

Country Link
EP (1) EP1116930B1 (fr)
AT (1) ATE295957T1 (fr)
DE (1) DE60020207T2 (fr)
DK (1) DK1116930T3 (fr)
ES (1) ES2238984T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1281929A1 (fr) * 2001-08-02 2003-02-05 RUAG Munition Sécurité améliorée pour détonateur électrique de munition
US6959893B1 (en) * 2003-04-01 2005-11-01 The United States Of America As Represented By The Secretary Of The Army Light fighter lethality seeker projectile
RU2450238C1 (ru) * 2011-02-02 2012-05-10 Владимир Викторович Черниченко Взрывное устройство
RU2451900C1 (ru) * 2011-02-02 2012-05-27 Владимир Викторович Черниченко Взрывное устройство
CN109489507A (zh) * 2018-12-12 2019-03-19 中国人民解放军海军工程大学 基于直列式引信的自毁装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1292321A (fr) * 1961-03-22 1962-05-04 Soc Tech De Rech Ind Contacteur pour fusées électriques
FR2528764A1 (fr) * 1982-06-18 1983-12-23 Lincrusta Procede de fabrication d'ogives pour munitions et ogives obtenues par ce procede
EP0497394A1 (fr) * 1991-01-31 1992-08-05 Bofors AB Dispositif d'allumage pour une charge explosive dans un projectile
DE4022329C1 (de) * 1990-07-13 1994-01-20 Deutsche Aerospace Flugkörper zur Bekämpfung von Zielen mit einer aktiven Panzerung
DE3828142C1 (de) * 1988-08-19 1994-05-11 Deutsche Aerospace Tandemhohlladung
FR2729750A1 (fr) * 1990-03-29 1996-07-26 France Etat Tete militaire a charges creuses en sequence

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1292321A (fr) * 1961-03-22 1962-05-04 Soc Tech De Rech Ind Contacteur pour fusées électriques
FR2528764A1 (fr) * 1982-06-18 1983-12-23 Lincrusta Procede de fabrication d'ogives pour munitions et ogives obtenues par ce procede
DE3828142C1 (de) * 1988-08-19 1994-05-11 Deutsche Aerospace Tandemhohlladung
FR2729750A1 (fr) * 1990-03-29 1996-07-26 France Etat Tete militaire a charges creuses en sequence
DE4022329C1 (de) * 1990-07-13 1994-01-20 Deutsche Aerospace Flugkörper zur Bekämpfung von Zielen mit einer aktiven Panzerung
EP0497394A1 (fr) * 1991-01-31 1992-08-05 Bofors AB Dispositif d'allumage pour une charge explosive dans un projectile

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1281929A1 (fr) * 2001-08-02 2003-02-05 RUAG Munition Sécurité améliorée pour détonateur électrique de munition
US6959893B1 (en) * 2003-04-01 2005-11-01 The United States Of America As Represented By The Secretary Of The Army Light fighter lethality seeker projectile
RU2450238C1 (ru) * 2011-02-02 2012-05-10 Владимир Викторович Черниченко Взрывное устройство
RU2451900C1 (ru) * 2011-02-02 2012-05-27 Владимир Викторович Черниченко Взрывное устройство
CN109489507A (zh) * 2018-12-12 2019-03-19 中国人民解放军海军工程大学 基于直列式引信的自毁装置
CN109489507B (zh) * 2018-12-12 2023-11-03 中国人民解放军海军工程大学 基于直列式引信的自毁装置

Also Published As

Publication number Publication date
DE60020207T2 (de) 2006-01-19
ATE295957T1 (de) 2005-06-15
DE60020207D1 (de) 2005-06-23
ES2238984T3 (es) 2005-09-16
EP1116930B1 (fr) 2005-05-18
DK1116930T3 (da) 2005-08-22

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