EP0294263B1 - Verfahren zum Erhöhen der Empfindlichkeit eines mit einem auf Aufschlagzünder ausgerüsteten Projektils - Google Patents

Verfahren zum Erhöhen der Empfindlichkeit eines mit einem auf Aufschlagzünder ausgerüsteten Projektils Download PDF

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Publication number
EP0294263B1
EP0294263B1 EP19880401209 EP88401209A EP0294263B1 EP 0294263 B1 EP0294263 B1 EP 0294263B1 EP 19880401209 EP19880401209 EP 19880401209 EP 88401209 A EP88401209 A EP 88401209A EP 0294263 B1 EP0294263 B1 EP 0294263B1
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EP
European Patent Office
Prior art keywords
ogive
projectile
impact
warhead
intermediate piece
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
EP19880401209
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English (en)
French (fr)
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EP0294263A1 (de
Inventor
Régis Riffet
Jean-Paul Duparc
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
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Filing date
Publication date
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Publication of EP0294263A1 publication Critical patent/EP0294263A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/38—Range-increasing arrangements
    • F42B10/42—Streamlined projectiles
    • F42B10/46—Streamlined nose cones; Windshields; Radomes

Definitions

  • the present invention applies to explosive ammunition of medium caliber and relates to a method making it possible to increase the sensitivity to the impact of a projectile carrying a percussion rocket, actuated by the inertia of the percussion mass during a impact as well as the devices making it possible to implement such a method.
  • This last patent describes a rocket body comprising a cavity closed at the front by an end wall, said cavity containing a striker rod with a front end face situated inside and near the end wall, the latter being designed to deform when a projectile comprising the rocket meets its objective, the end wall then acting on said end face to axially push the striker rod backwards in order to detonate the projectile, and is characterized in that the end wall forms a nose integral with the rocket body, this nose being joined to the rocket body by an annular section of small axial thickness.
  • the value of the delay is given by the travel time of the striker 62 in the part 80.
  • the object of the present invention is like that of the devices described above to adjust the sensitivity of the ignition so that the ignition does not occur on impacts, for example with foliage but occurs during through thin walls. It is also sure to allow the firing of the base rocket by causing the movement of the striking mass at the time of impact on the thin wall.
  • the object of the present invention is to provide a method allowing a simple adjustment of the specific sensitivity of a projectile, without intervention on the rocket, but by increasing the motive force of the percussive moving mass of this rocket by an increase in the deceleration when puncturing a thin target.
  • a device for implementing this method is characterized in that the rupture of the warhead at the primer under the effect of an impact from the projectile causes the nose of the warhead to be embedded in a rear housing of the warhead.
  • the means consist of a particular architecture of the warhead which comprises a front part, connected without a rupture initiation to a middle part, and a rear part at the level of which the warhead is made integral with the body of the projectile by a connecting means, and the thickness of the front part is greater than 130% of the thickness of the middle part, the latter thickness being such that the force necessary to cause its plastic deformation is less than that necessary to break the connecting means.
  • the projectile represented in FIG. 1 comprises a body 1, carrying a belt 2, and at the rear, a percussion base rocket 3 which comprises, in known manner, a percussive moving mass, responsible for initiating a pyrotechnic charge 4 (generally explosive) by means of a primer 5.
  • a pyrotechnic charge 4 generally explosive
  • the aerodynamic profiling of this projectile is obtained by the addition of a ballistic warhead 6 which has a nose whose front face 12, coming into contact with the target, is substantially circular.
  • This warhead tends, following an impact on a thin target, to slide on the body of the projectile, as shown Figure 2, without significant changes to its profile.
  • the target is easily perforated and it follows that the slowdown following the impact may be insufficient to ensure the operation of the base rocket 3.
  • FIG. 3 A first example of the device according to the invention is shown in FIG. 3.
  • a rupture initiation 8 is caused inside the warhead 6 by means of a cylindrical recess 7, other shapes can be given to this. recess, for example conical.
  • the initiation of rupture 8 may result from a sudden variation in the thickness of the warhead as in the case of a solid warhead nose (for ballistic reasons) as shown in FIG. 5.
  • FIGS. 6 and 7 show a warhead in which four rupture initiators 8 have been made along internal generatrices and spaced apart from each other by 90 °.
  • the embrittlement thus obtained causes the crushing of the warhead on impact as shown in FIG. 7, and a very strong deceleration which it is possible to modulate by varying the number and the section of the incipient fractures 8.
  • This intermediate piece can be full or have one or more holes 10 (see FIG. 8) made axially or radially.
  • the nose of the warhead will be embedded in these holes on impact.
  • the sensitivity will be adjusted by adjusting the diameter and / or the height of the intermediate piece 9 or even the number, the diameter and the position of any holes. Furthermore, the increase in mass linked to the presence of the part 9 can have a favorable influence on the ballistics of the projectile.
  • FIG. 9 shows such a variant in which the intermediate piece 9 behaves like a cookie cutter, due to the presence of a sharp peripheral zone 11.
  • the sensitivity will depend on the section to be sheared, the latter depending on the diameter of the peripheral zone 11 and on the thickness of the warhead with respect to said zone 11.
  • Figure 11 shows another embodiment of the device according to the invention.
  • the means making it possible to deform the warhead on impact are constituted by a particular architecture of the warhead which comprises three parts:
  • the limit between the middle part and the rear part corresponds substantially to the contact zone between the body 1 and the warhead 6.
  • the warhead 6 being in contact with the cylindrical front end 18 of the body 1, the thickness of the rear part thus increases substantially linearly up to the thread 17.
  • the nose retains its rigidity during the deformation of the middle part 14 and there is no separation of the front and middle parts.
  • Figure 12 shows such a warhead after impact on a target.
  • the increase in diameter can be up to 250%, this due to the large length of the middle part which extends over substantially 50% of the total length of the warhead, it is possible to adjust this increase in diameter by varying the length of this middle part, for example by placing an intermediate part inside the warhead, part on which the rear part will bear.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Claims (10)

1. Vorrichtung für die Zündung eines Geschoßes des Typs bestehend aus einem Aufschlagzünder (3) und einer ballistischen Geschoßspitze (6) mit Mitteln, die eine Verformung dieser Geschoßspitze beim Aufprallen auf eine dünne Wand einleiten, dadurch gekennzeichnet, daß diese Mittel entsprechend ausgelegt sind, damit die erhaltene Verformung eine Erweiterung des Durchmessers des vorderen Teils des Geschoßes bewirken.
2. Geschoßspitze (6), die bei mindestens einem Bruchausgangspunkt verformbar und für die Verwirklichung des Verfahrens nach Anspruch 1 geeignet ist, dadurch gekennzeichnet, daß der Anriß der Geschoßspitze im Bereich des Bruchausgangspunktes beim Aufschlag des Geschoßes die Versenkung der Geschoßnase in den hinteren Hohlraum der Geschoßspitze bewirkt.
3. Geschoßspitze nach Anspruch 2, dadurch gekennzeichnet, daß der oder die Ausgangspunkte der Brüche der Geschoßspitze (6) axialen und inneren Einsenkungen entsprechen.
4. Geschoßspitze (6), die bei mindestens einem Bruchausgangspunkt verformbar und für die Verwirklichung des Verfahrens nach Anspruch 1 geeignet ist, dadurch gekennzeichnet, daß die Bruchausgangspunkte (8) nach inneren oder äußeren Mantellinien der Geschoßspitze (6) angeordnet sind.
5. Geschoßspitze (6) nach den Ansprüchen 2 bis 4, dadurch gekennzeichnet, daß ein Zwischenstück (9) im Innern der Geschoßspitze (6) angeordnet ist.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das Zwischenstück (9) einen Umfang (11) aufweist, der mit der Geschoßspitze (6) in Berührung kommt und mit einem für den Aufschnitt der Geschoßspitze beim Aufschlag entsprechenden Profil versehen ist.
7. Geschoßspitze nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß das Zwischenstück (9) mit mindestens einer zylindrischen Bohrung (10) versehen ist.
8. Geschoßspitze nach Anspruch 5 bis 7, dadurch gekennzeichnet, daß das Zwischenstück (9) in der Geschoßspitze (6) festsitzt.
9. Geschoßspitze nach Anspruch 5 bis 7, dadurch gekennzeichnet, daß das Zwischenstück (9) aus einem gepreßten pyrotechnischen Satz besteht.
10. Geschoßspitze für den Einsatz des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß sie aus einem mit einem mittleren Teil (14) angeschlossenen vorderen Teil (13) sowie einem hinteren Teil (15) besteht, wobei die Geschoßspitze (6) mit dem Geschoßkörper (1) über ein Verbindungsmittel (17) festverbunden ist, und daß die Dicke (e1) des vorderen Teils über 130 % der Dicke (e2) des mittleren Teils liegt, wobei letztere Dicke entsprechend ausgelegt ist, damit die für die plastische Verformung der Geschoßspitze notwendige Kraft geringer als die für den Bruch des Verbindungsmittels notwendige Beanspruchung ist.
EP19880401209 1987-05-21 1988-05-18 Verfahren zum Erhöhen der Empfindlichkeit eines mit einem auf Aufschlagzünder ausgerüsteten Projektils Expired - Lifetime EP0294263B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8707111 1987-05-21
FR8707111A FR2615610A1 (fr) 1987-05-21 1987-05-21 Procede permettant d'augmenter la sensibilite a l'impact d'un projectile portant une fusee percutante

Publications (2)

Publication Number Publication Date
EP0294263A1 EP0294263A1 (de) 1988-12-07
EP0294263B1 true EP0294263B1 (de) 1991-03-27

Family

ID=9351285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880401209 Expired - Lifetime EP0294263B1 (de) 1987-05-21 1988-05-18 Verfahren zum Erhöhen der Empfindlichkeit eines mit einem auf Aufschlagzünder ausgerüsteten Projektils

Country Status (4)

Country Link
EP (1) EP0294263B1 (de)
DE (1) DE3862161D1 (de)
ES (1) ES2021849B3 (de)
FR (1) FR2615610A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010034332A1 (de) * 2010-07-06 2012-01-12 Rheinmetall Waffe Munition Gmbh Vollkaliber-Übungspatrone
HUP2000306A1 (hu) * 2020-09-17 2022-03-28 Fueloep Nandor Lövedék
IT202100031604A1 (it) * 2022-04-12 2023-10-12 Antonio Sirini Proiettile modulare ad alto coefficiente balistico con possibilita' di variare il coefficiente balistico secondo l'utilizzo e la distanza del bersaglio.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR598366A (fr) * 1924-06-09 1925-12-15 Dispositif pour augmenter la sensibilité des fusées
BE335055A (de) * 1925-06-09
SE416679B (sv) * 1977-03-02 1981-01-26 Saab Scania Ab Anslagstendror
US4242964A (en) * 1978-12-18 1981-01-06 Ares, Inc. Explosive fuse for projectile
AT376499B (de) * 1982-08-03 1984-11-26 Oregon Ets Patentverwertung Geschosshaube fuer sprengstofflose kampfstoffgranaten, insbesondere fuer rauchgranaten
DE3422786A1 (de) * 1984-06-20 1986-01-02 Diehl GmbH & Co, 8500 Nürnberg Aufschlagzuender mit verformbarer haube

Also Published As

Publication number Publication date
ES2021849B3 (es) 1991-11-16
FR2615610A1 (fr) 1988-11-25
DE3862161D1 (de) 1991-05-02
EP0294263A1 (de) 1988-12-07

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