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EP0805335B1 - Splittergeschoss mit äquatorialer Ausstosssymmetrie - Google Patents

Splittergeschoss mit äquatorialer Ausstosssymmetrie Download PDF

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Publication number
EP0805335B1
EP0805335B1 EP19970400958 EP97400958A EP0805335B1 EP 0805335 B1 EP0805335 B1 EP 0805335B1 EP 19970400958 EP19970400958 EP 19970400958 EP 97400958 A EP97400958 A EP 97400958A EP 0805335 B1 EP0805335 B1 EP 0805335B1
Authority
EP
European Patent Office
Prior art keywords
relay
confinement
priming
load
profile
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
EP19970400958
Other languages
English (en)
French (fr)
Other versions
EP0805335A1 (de
Inventor
Christophe Thomson-CSF Bar
Benoít Thomson-CSF Coquand
Martine Thomson-CSF Lesage
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.)
TDA Armements SAS
Original Assignee
TDA Armements SAS
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Filing date
Publication date
Application filed by TDA Armements SAS filed Critical TDA Armements SAS
Publication of EP0805335A1 publication Critical patent/EP0805335A1/de
Application granted granted Critical
Publication of EP0805335B1 publication Critical patent/EP0805335B1/de
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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
    • 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
    • F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
    • F42B12/201—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type characterised by target class
    • F42B12/204—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type characterised by target class for attacking structures, e.g. specific buildings or fortifications, ships or vehicles
    • 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

Definitions

  • the present invention relates to a fragmentation munition of equatorial expulsion symmetry. It applies in particular to loads having a single ignition relay, the latter being placed at the charge center with the aim of initiating the detonation of the explosive of the main load, the load being for example intended to equip a missile.
  • EP-A-0 138 640 describes a ammunition comprising a main explosive charge acting on a flash generator and containing a priming relay.
  • the detonation of the load is sought by projection of the metallic confinement of the relay on the loading explosive.
  • This shock ignition is generally preferable to direct ignition where the explosives of the relay and the load are in contact.
  • Such a priming direct generally has performance that fluctuates with the temperature. For negative temperatures, a set of shrinkage thermal, very harmful, also appears at the interface of explosives.
  • shock initiation satisfactory for the ranges of usual operating temperature, is generally obtained by a cylindrical ignition relay.
  • this relay is itself initiated by a single detonator, or even a transmission of detonation when the detonator is housed at the end of the charge.
  • the coupling of the central position of this relay with a definition symmetrical profile of the splinter generator allows distribution quasi-symmetrical of the flow of splinters with respect to the equatorial plane of the charge, at least in theory.
  • large-scale tests carried out by the actual Applicant highlight the existence of a defect in symmetry of expulsion of the fragments with respect to the equatorial plane of the charge.
  • the projected shards do not have a direction normal to the load axis but undergo an angular shift relative to this normal direction. It follows that the projection of the fragments is no longer perfectly controlled, and therefore that targets can be achieved less effectively.
  • the use of main load explosive with reduced initiation increases this defect.
  • the object of the invention is to eliminate the aforementioned defect while retaining a single detonator in the charge.
  • the subject of the invention is a munition comprising a main explosive charge acting on a burst generator and containing substantially in its middle a priming relay.
  • the detonation of the main load is achieved by projecting the containment of the priming relay on this load, characterized in that the profile of the containment of the ignition relay is determined so that the confinement first creates an impact appreciably in the middle of the load main.
  • the main advantages of the invention are that it does not modify the proportions of the central loading channel, that it is economical, that it is simple to implement and allows to consider the use lower explosive loading explosives.
  • FIG. 1 shows, in a cross-sectional view, a example of a military charge with fragmentation according to the prior art comprising a single ignition relay 1.
  • This load includes a burst generator 2, for example concave, cylindrical or convex, inside which contains an explosive charge 3 or main charge.
  • a burst generator 2 for example concave, cylindrical or convex, inside which contains an explosive charge 3 or main charge.
  • Of closing flanges 4, 5 located at each end of the generator 2 close the set.
  • a hole is made in the upper flange 4 in order to let through a detonator 6, which is connected to the priming relay 1 by detonation transmission means 7.
  • the assembly 1, 2, 3, 4, 5, 6, 7 has symmetry of revolution about an axis 8.
  • FIGS 2 and 3 show in more detail the ignition relay 1 in its environment by half-views in cross section around of this relay at a height HH '.
  • Figure 2 shows the ignition relay 1 fitted with a metallic containment 21 covering the radial surface of the explosive 22. Following the explosion of the priming relay 1 from a detonation transmitted by the transmission means 7, the confinement 21 is projected onto the main load 3. The shock initiation of the latter is then carried out.
  • FIG. 3 presents a case where the detonator 6 is directly at the ignition explosive 22 contact of ignition relay 1.
  • Figure 4 shows schematically by arrows 41, what should be theoretically, the direction of the generator bursts projected during a explosion.
  • the coupling of the central part of the priming relay 1 with a symmetrical definition of the profile of generator 2 with respect to its plane equatorial 42 allows a quasi-symmetrical distribution of the flake flow 41 relative to this equatorial plane 42, in direction and in position.
  • that 43 of the median bursts should be approximately normal to the axis of symmetry 8 of the load, the other directions widening slightly fan-shaped from the middle flares to the extreme flakes.
  • the position of the detonator 6 placed at front or rear of the load defines the direction of propagation of the detonation in the ignition relay 1.
  • this direction of ignition of relay 1 influences the loading initiation and generates a symmetry defect of expelling the fragments in relation to the equatorial plane 42 of the load.
  • the direction 43 of the median bursts is offset angularly with respect to this equatorial plane 43, that is to say with respect to normal to the axis of symmetry 8 of the load.
  • the other directions 41 undergo the same angular shift.
  • Calculations and experiments carried out by the applicant have further shown that the extent of this defect of symmetry is substantially inversely proportional to the initiability of the explosive of the load 3.
  • Figure 5 illustrates the angular offset, noted ⁇ , mentioned previously.
  • the Depositor's calculations and experiments have shown that the offset angle ⁇ varies according to the nature of the load 3 and the nature of the generator 2.
  • Figure 6 illustrates in a sectional view, at the relay ignition 1, a possible embodiment of a charge according to the invention.
  • the ignition relay has a confinement 21 having a non-constant distance from the main load 3.
  • the ignition of relay 1 takes place at point A of the end 23 of the relay, preferably on the axis of symmetry 8 of the load, the confinement 21 of the relay approaches the main load 3, in from end 23 of starting point A to opposite end 24 of the relay.
  • the radial distance of the confinement 21 of the relay from the loading is therefore not constant over height. It is notably sized according to the speed of propagation of the detonation in the initiating explosive 22 from point A.
  • the confinement profile is determined so that this confinement, under the effect of the shock wave, first meets the main load 3 at a point C located substantially in the middle of this load. Knowing the speed of propagation of the shock wave in the initiating explosive 22 of the relay of a share, but also the displacement speed of the containment 21 of the relay on the other hand, it is possible to determine the profile of the confinement so as to what the latter first creates an impact at midpoint C, and this by combination of speed vectors. Such a profile can then easily be obtained for example by known means of simulation.
  • containment 21 of the ignition relay allows to restore a symmetry of the splinter flow with respect to the equatorial plane as shown the depositor's experiments and calculations. These have indeed showed the importance of the place of first impact on the load principal 3.
  • the first point of impact is for example in below the middle C of the main load, although the shock is sufficient to initiate the detonation upstream as downstream of the equatorial plane, the the applicant's experimental results, however, showed asymmetry of response of the loading. The detonation is then initiated more easily from the first point of impact by going in the direction of the wave of shock, this being always generated at the aforementioned point A, that by going up the sense of this shock wave.
  • the invention has the advantage of correcting only the definition of relay.
  • the invention notably has among other advantages that of not need to adapt the profile of the burst generator 2 of the load, a such an adaptation would be costly and complex to implement.
  • This splinter generator 2 can in particular be produced with perfect symmetry revolution and therefore simplicity of implementation.
  • the invention also does not require modifying the proportions of the central loading channel. It solves the problem of asymmetry above which avoids the use of a second detonator, opposite to the first compared to the priming relay, an expensive and complex solution to implement works in particular because of the adjustment of the synchronism between the two detonators.
  • the profile of the priming relay 1 presented in FIG. 6 is given to as an example. This profile in fact depends on calculations or simulations. digital so that the confinement 21 of the relay creates a impact first appreciably in the middle of the main load 3.
  • the profile depends in particular on the nature of the materials used for the initiating explosive 22 and for the containment 21 of the relay priming.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Air Bags (AREA)

Claims (6)

  1. Munition, die eine explosive Hauptladung (3) enthält, die auf einen Splittergenerator (2) wirkt und im wesentlichen in ihrer Mitte ein Zündrelais (1) enthält, wobei die Detonation der Hauptladung (3) durch Schießen der Hülle (21) des Zündrelais (1) auf diese Ladung (3) bewirkt wird, dadurch gekennzeichnet, daß das Profil der Hülle (21) des Zündrelais (1) in der Weise bestimmt ist, daß die Hülle zunächst einen Stoß im wesentlichen in der Mitte (C) der Hauptladung (3) erzeugt.
  2. Munition nach Anspruch 1, dadurch gekennzeichnet, daß das Relais (1) an einem seiner Enden (A, 23) gezündet wird, wobei sich das Profil der Hülle (21) des Relais (1) der Hauptladung (3) ausgehend vom Zündungsende (A, 23) bis zum gegenüberliegenden Ende (24) des Relais annähert.
  3. Munition nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Profil der Hülle (21) des Zündrelais in Abhängigkeit von der Ausbreitungsgeschwindigkeit der Stoßwelle im Inneren des Sprengstoffs (22) des Relais (1) ausgehend vom Zündpunkt (A) bestimmt ist.
  4. Munition nach Anspruch 3, dadurch gekennzeichnet, daß das Profil der Hülle (21) außerdem von der Schießgeschwindigkeit zur Hauptladung (3) abhängt.
  5. Munition nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Relais (1) durch einen Zünder (6) und über pyrotechnische Übertragungsmittel (7) gezündet wird.
  6. Munition nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie rotationssymmetrisch ist.
EP19970400958 1996-04-30 1997-04-29 Splittergeschoss mit äquatorialer Ausstosssymmetrie Expired - Lifetime EP0805335B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605428A FR2748102B1 (fr) 1996-04-30 1996-04-30 Munition a fragmentation de symetrie equatoriale d'expulsion
FR9605428 1996-04-30

Publications (2)

Publication Number Publication Date
EP0805335A1 EP0805335A1 (de) 1997-11-05
EP0805335B1 true EP0805335B1 (de) 2001-07-18

Family

ID=9491720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970400958 Expired - Lifetime EP0805335B1 (de) 1996-04-30 1997-04-29 Splittergeschoss mit äquatorialer Ausstosssymmetrie

Country Status (3)

Country Link
EP (1) EP0805335B1 (de)
DE (1) DE69705670T2 (de)
FR (1) FR2748102B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2819883B1 (fr) 2001-01-19 2003-07-18 Poudres & Explosifs Ste Nale Element de munition explosive a fragmentation
FR2944864B1 (fr) * 2009-04-22 2011-04-01 Nexter Munitions Dispositif d'amorcage d'un chargement explosif

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550857B1 (fr) * 1983-08-16 1987-01-23 Matra Charge militaire explosive
FR2606134B1 (fr) * 1986-10-31 1990-08-24 Thomson Brandt Armements Procede de realisation d'un chargement explosif a conformation d'onde et chargement explosif realise par ledit procede
FR2620215B1 (fr) * 1987-09-03 1993-02-19 France Etat Armement Projectile gyrostabilise a effets diriges

Also Published As

Publication number Publication date
EP0805335A1 (de) 1997-11-05
FR2748102B1 (fr) 1998-07-17
DE69705670D1 (de) 2001-08-23
FR2748102A1 (fr) 1997-10-31
DE69705670T2 (de) 2002-05-23

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