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EP0088898B1 - Projectile de calibre réduit à noyau perforant - Google Patents

Projectile de calibre réduit à noyau perforant Download PDF

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Publication number
EP0088898B1
EP0088898B1 EP83101454A EP83101454A EP0088898B1 EP 0088898 B1 EP0088898 B1 EP 0088898B1 EP 83101454 A EP83101454 A EP 83101454A EP 83101454 A EP83101454 A EP 83101454A EP 0088898 B1 EP0088898 B1 EP 0088898B1
Authority
EP
European Patent Office
Prior art keywords
core element
casing
main
projectile
frontal
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
Application number
EP83101454A
Other languages
German (de)
English (en)
Other versions
EP0088898A1 (fr
Inventor
Jürgen Dr. Böcker
Hans Werner Luther
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.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall GmbH
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 Rheinmetall GmbH filed Critical Rheinmetall GmbH
Priority to AT83101454T priority Critical patent/ATE27060T1/de
Publication of EP0088898A1 publication Critical patent/EP0088898A1/fr
Application granted granted Critical
Publication of EP0088898B1 publication Critical patent/EP0088898B1/fr
Expired 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
    • F42B12/04—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
    • F42B12/06—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 hard or heavy core; Kinetic energy penetrators

Definitions

  • the invention relates to a balancing projectile with the features of the preamble of claim 1.
  • a balancing projectile is, for. B. known from German Patent 14 28 679. It has different armor-piercing pre-core elements axially one behind the other and an armor-piercing main core element adjoining these on the back. Between the core elements, which consist of hard and / or heavy metal, layers of plastic-bonded hollow spheres or a light metal alloy are provided as shock-absorbing means.
  • the arrangement of the different pre-core elements is intended to achieve a targeted mass cultivation of the projectile arrangement in such a way that a sufficient projectile mass in the form of the main core element is still available after penetration of a pre-armor while protecting the main core element against premature destruction due to shock wave stress against a main armor of the target.
  • missiles of the type mentioned at the outset are exposed to loads acting through multi-plate rows transverse to the longitudinal axis of the missile, which regularly lead to premature bending of the missile.
  • a penetration channel inclined towards the extension of the projectile trajectory can prevent the main core element from reaching the main armor and thus impair the effect of the projectile in a very sensitive manner.
  • Such a known projectile can only be optimized for penetrating multiple targets (bulkhead armor) or for a difficult single target or a multiple target with a particularly strong pre-armor.
  • the object of the invention is therefore to improve such a projectile in such a way that it is equally well suited for both target types mentioned with a corresponding increase in performance and that it can even be adapted to the respective target plate number and target plate thickness.
  • US Pat. No. 3,370,535 already shows a projectile subdivided into the main core and pre-core, in which the pre-core is held on the main core element in a play-free seat by a releasable threaded fastening of the hood with the sleeve.
  • the pre-core is held on the main core element in a play-free seat by a releasable threaded fastening of the hood with the sleeve.
  • FIGS. 1 and 2 show in FIGS. 1 and 2 an embodiment of the new balancing bullet each in a longitudinal axial section.
  • a pre-penetrator 10 to which a main core element 80 is arranged axially, has three pre-core elements 12, 30 and 50 arranged one behind the other along a longitudinal axis A of the projectile.
  • the tip-side pre-core element 12 is provided with a front surface 14 which delimits a spherical cap.
  • Connected to them on the back is a conical outer surface 16 which has a common peripheral edge 18 with a circular cylindrical surface 20.
  • the circular cylinder surface 20 is followed on the rear by a rounding 22 which merges into a circular funnel area 24 with a central rounding 26.
  • a front surface 32 of a second Vorkernelements 30 has a circular cone portion 34 with a central rounded portion 36 and is bounded by a radially extending groove 38 to the circumference with a 'peripheral circular edge 40th
  • a circular cylinder part with a circumferential surface 42 connects to the rear of the latter. This is delimited on the back by a rounding 44 which, together with a circular funnel area 46 with a central rounding 48, forms a rear side surface, which is not described in any more detail.
  • a third pre-core element 50 has a front surface 52 with a circular cone jacket region 54 and a central rounding 56. The front surface 52 is followed by a circular-conical transition region 58 with a groove 60 delimiting it on the circumference, which is delimited on the circumference by a circular edge 62.
  • a front part 82 of a main core element 80 is delimited by a front surface 84 with a circular cone region 86, a central rounding 88 and a circular edge 90.
  • the latter delimits a circular-cylindrical transition region 92 on the front with an adjoining groove 94 which ends in a circumferential circular edge 96.
  • the sleeve 110 extends with a circumferential surface 112 up to an external thread 116 on an unspecified sleeve front part of lesser wall thickness.
  • An inner surface 113 of the shell 110 closely encloses the pre-core elements 30 and 50 and the front part 82.
  • a back cover (not shown in more detail) with an internal thread of a ballistic hood 118 serves to releasably fasten the latter to the shell 110, with an inner surface 119 of the ballistic hood 118 fits tightly against the conical outer surface 16 of the pre-core element 12 and this in the axial direction with its rear surface against the front surface 32 of the pre-core element 30 which is adapted to its central region, this with its rear surface against the front surface 52 of the pre-core element 50 which is adapted to its central region and this finally with its rear surface against the front surface 84 of the front part 82, which is adapted to its central region, presses.
  • the joint areas 1, 2 and 3 are, in order, between the inner surface 113 of the casing 110 and the rounding 22 and the groove 38, the rounding 44 and the groove 62 and finally the rounding 66 and the groove 54 are assigned a respective annular cavity 120, 122 and 124, respectively.
  • the pre-core elements 12, 30 and 50, with one another and with the front part 82 having the same outside diameter, as well as the main core element 80 and the sleeve 110 are made of a metallic material of high density, for example a sintered alloy with a high tungsten content.
  • the ballistic hood 118 is made of steel.
  • a pre-penetrator 10 to which a main core element 190 is arranged axially, has three pre-core elements 130, 150 and 170 arranged one behind the other along the longitudinal axis A of the projectile.
  • the latter extends up to a circular rear edge 140 which delimits a circular funnel surface 142 on the circumference. This extends up to a circular edge 144 of a central blind hole 146 with an inner surface 148.
  • the tip-side core element 130 is followed by the second core element 150 with a front circular cone surface 150, which extends from a circumferential circular edge 154 to a front circular edge 156 of a central axial passage 166 extends.
  • a circular cylindrical circumferential surface 158 extends from the front circular edge 154 to a rear circular edge 160 which delimits a circular funnel surface 162 on the circumferential side. The latter extends up to a rear circular edge 164 of the passage 166 with an inner surface 168.
  • the second pre-core element 150 is followed by the third pre-core element 170 with a front circular cone surface 172 which extends from a circumferential circular edge 174 to a front circular edge 176 of a passage 186 an inner surface 188.
  • a circular cylindrical circumferential surface 178 is delimited on the front by the circular edge 174 and on the rear by a rear edge 180, in which the circumferential surface 178 collides with a circular funnel surface 182 which extends up to a rear circular edge 184 of the passage 186.
  • the third core element 170 is followed on the back by a circular cylindrical peripheral surface 194 having front part 192 of the main core element 190.
  • the circumferential surface 194 is delimited on the front by a circular edge 196, which is followed by a circular truncated cone 198.
  • a central axial conical mandrel 202 with a circumferential surface 204 and a free end 206 protrudes from its front edge 200 of smaller diameter.
  • the peripheral surface 194 terminates in a fillet 208 with an outer circular edge 210 of a peripheral surface 214 with a thread 216 of the main part 212 of the main core element 190.
  • the mandrel 202 extends through the passages 186 and 166 of the two preliminary core elements 170 and 150 and extends with its free one End 206 into the blind hole 146 of the pre-core element 130.
  • the sleeve 110 and the ballistic hood 118 are designed analogously to FIG. 1, the rear surface 114 being adapted to the fillet 208 and the peripheral surface 112 having the same outside diameter as that of the main part 212.
  • the pre-core elements 130, 150 and 170 are pressed axially against one another and the pre-core element 170 is pressed against the front part 192.
  • the inner surfaces 188 and 168 of the passages 186 and 166 and the inner surface 148 of the blind hole 146 closely enclose the mandrel 202.
  • the pivoting of the remaining pre-penetrator is achieved in that the mandrel 202, due to its already larger diameter there, initially opposes the pressure of the relevant area of the circular funnel surface 62 on the conical lateral surface 172 with greater resistance, but then the pivoting force can become fully effective when the mandrel breaks .
  • the process in the joint region 3 is analogous, so that the main core element 190 can then take full effect against the target at a favorable angle.
  • the penetration is improved in the manner described.
  • the process described is repeated at least on each thick plate.
  • the pre-core elements of the pre-penetrator 10 are adaptable to a number of target plates in terms of their number, the material and their length and thus also the respective mass.
  • Deflection of the respective pre-core element of the pre-penetrator 10 designed according to the invention results in an enlargement of the entry opening in relation to the projectile diameter in the target plate in question.
  • This proves to be advantageous for the subsequent main core element, particularly in the case of novel targets, for example with glass and / or ceramic modules: it promotes its passage through the plate in question and thus improves its action against downstream target plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Claims (4)

1. Projectile à noyau perforant sous-calibré, stabilisé en direction, ayant la forme d'un cylindre circulaire, de diamètre uniforme sur sa longueur, comportant une ogive balistique (118) et des éléments de noyau antérieur perforants (12, 30, 50), placés axialement les uns à la suite des autres, auxquels fait suite postérieurement un élément de noyau principal (80), et une douille extérieurement lisse (110), caractérisé par les caractéristiques suivantes :
a) l'enveloppe (110) ne s'étend que de l'ogive balistique (118) à la zone antérieure de l'élément de noyau principal (80) et y est reliée à celui-ci ;
b) le diamètre extérieur de l'élément de noyau principal (80) est égal au diamètre extérieur de l'enveloppe (110), de sorte que le projectile présente une surface supérieure lisse d'une épaisseur de paroi constamment identique ;
c) les éléments de noyau antérieur (12, 30, 50) sont de même diamètre et sont directement en contact entre eux et respectivement avec une surface frontale (84, 298) de l'élément de noyau principal (80) par une surface frontale respective ou une surface postérieure (32, 52, 152, 172) ;
d) les surfaces frontales (32, 52, 84 ; 152, 172, 198) et les surfaces postérieures situées respectivement de leur côté ont des formes mutuellement adaptées et sont inclinées dans les zones de raccordement avec une inclinaison croissante d'avant en arrière par rapport à l'axe longitudinal (A) du projectile ;
e) les éléments de noyau antérieur (12, 30, 50) sont maintenus avec un ajustement sans jeu entre eux et avec l'élément de noyau principal (80) par l'ogive balistique (118) reliée de façon amovible à l'enveloppe (110).
2. Projectile selon la revendication 1, caractérisé en ce que les surfaces frontales et postérieures en regard des éléments de noyau sont conformées en zone en forme d'entonnoir circulaire (24) avec un arrondi central ou en zone de surface latérale en forme de cône circulaire avec un arrondi central, et en ce que les zones de surface proches de la périphérie en regard (22, 38, 40, 60, 66, 94) délimitent antérieurement et postérieurement une cavité périphérique (120, 122, 124).
3. Projectile selon la revendication 1, caractérisé par les caractéristiques suivantes :
a) le premier élément de noyau antérieur (130) comporte un trou borgne (146) au niveau de l'axe central comportant une surface intérieure (148), l'élément de noyau (150) qui est à son contact comporte un passage (166) au niveau de l'axe central comportant une surface intérieure (168) au niveau de l'axe central comportant une surface intérieure (188) ;
b) une broche conique (202) comportant une surface périphérique (204) dépasse d'un bord circulaire (200) de la partie antérieure (192) de l'élément de noyau principal (190) ;
c) la broche (202) traverse les éléments de noyau antérieur suivants (170 et 150) et pénètre, par une extrémité libre (206), dans le trou borgne (146) du premier élément de noyau antérieur (130), et
d) les surfaces intérieures (188, 168, 148) des éléments de noyau antérieur enserrent étroitement la surface périphérique (204) de la broche (202).
4. Projectile selon l'une des revendications 1 à 3, caractérisé en ce que l'élément de noyau principal est constitué par une partie principale postérieure (104, 212) pouvant être reliée de façon amovible à une partie antérieure (82, 192) qui est conformée en élément de liaison pour enveloppe (110) d'une part et les éléments de noyau antérieur d'autre part, avec la partie principale (104, 212).
EP83101454A 1982-03-17 1983-02-16 Projectile de calibre réduit à noyau perforant Expired EP0088898B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83101454T ATE27060T1 (de) 1982-03-17 1983-02-16 Unterkalibriges panzerbrechendes wuchtgeschoss (penetrator).

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823209593 DE3209593A1 (de) 1982-03-17 1982-03-17 Unterkalibriges panzerbrechendes wuchtgeschoss (penetrator)
DE3209593 1982-03-17

Publications (2)

Publication Number Publication Date
EP0088898A1 EP0088898A1 (fr) 1983-09-21
EP0088898B1 true EP0088898B1 (fr) 1987-05-06

Family

ID=6158424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101454A Expired EP0088898B1 (fr) 1982-03-17 1983-02-16 Projectile de calibre réduit à noyau perforant

Country Status (4)

Country Link
US (2) US4635556A (fr)
EP (1) EP0088898B1 (fr)
AT (1) ATE27060T1 (fr)
DE (2) DE3209593A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3209594A1 (de) * 1982-03-17 1983-09-29 L'Etat Français représenté par le Délégué Général pour l'Armement, 75997 Paris Panzerbrechendes wuchtgeschoss insbesondere zum bekaempfen von mehrplattenzielen
DE3479437D1 (en) * 1983-10-28 1989-09-21 Rheinmetall Gmbh Fin-stabilized subcalibre missile with a high length-to-diameter ratio
DE3476117D1 (en) * 1983-11-23 1989-02-16 Voest Alpine Ag Sub-calibre penetrator and method of making the same
US5834684A (en) * 1996-08-19 1998-11-10 Lockheed Martin Vought Systems Corporation Penetrator having multiple impact segments
US6021716A (en) * 1997-07-18 2000-02-08 Lockheed Martin Corporation Penetrator having multiple impact segments
US5988071A (en) 1997-08-21 1999-11-23 Lockheed Martin Corporation Penetrator having multiple impact segments, including an explosive segment
US6662726B1 (en) 1999-03-08 2003-12-16 General Dynamics Ordnance And Tactical Systems, Inc. Kinetic energy penetrator
US6276277B1 (en) * 1999-04-22 2001-08-21 Lockheed Martin Corporation Rocket-boosted guided hard target penetrator
FR2871226B1 (fr) * 2004-06-08 2006-08-18 Tda Armements Sas Soc Par Acti Projectile, notamment bombe de penetration anti- infrastructure et procede de penetration d'un tel projectile a travers une paroi
US7795567B2 (en) * 2005-04-05 2010-09-14 Raytheon Company Guided kinetic penetrator
US7765934B2 (en) * 2005-05-09 2010-08-03 Ruag Ammotec Lead-free projectile
USH2230H1 (en) 2006-11-30 2009-08-04 The United States Of America As Represented By The Secretary Of The Navy Ceramic and stacked penetrator against a hardened target
US8707868B2 (en) 2006-11-30 2014-04-29 The United States Of America As Represented By The Secretary Of The Navy Pre-compressed penetrator element for projectile
RU2577613C1 (ru) * 2014-10-01 2016-03-20 Александр Александрович Котровский Бронебойный подкалиберный снаряд
US10330448B2 (en) * 2015-12-16 2019-06-25 Ruag Ammotec Ag Fragmentation projectile and method for its manufacturing
US20190017791A1 (en) * 2017-03-07 2019-01-17 U.S. Army Research Laboratory Attn: Rdrl-Loc-I Reduced Jacketed Bullet Bore Resistance
DE102018005406B3 (de) * 2018-07-06 2019-09-05 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Penetrator
US11274908B2 (en) * 2018-12-04 2022-03-15 The United States of America as represented by the Federal Bureau of Investigation, Department of Justice Penetrator projectile for explosive device neutralization
DE102021130961A1 (de) 2021-11-25 2023-05-25 Rheinmetall Waffe Munition Gmbh Penetrator, Verwendung eines Penetrators, Geschoss und patronierte Munition

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1017928A (en) * 1911-11-18 1912-02-20 Georgi Tocik Projectile for firearms.
US1301859A (en) * 1917-06-12 1919-04-29 Washington Steel & Ordnance Company Armor-piercing projectile.
GB594517A (en) * 1940-09-04 1947-11-13 Charles Dennistoun Burney Improvements in or relating to aeroplane and other bombs or projectiles
NL76015C (fr) * 1947-04-02 1900-01-01
US3028808A (en) * 1958-01-09 1962-04-10 Samuel J Porter Armor piercing incendiary projectile
GB1095992A (en) * 1959-04-14 1967-12-20 Secr Defence Improvements in or relating to projectiles
US3213792A (en) * 1962-11-20 1965-10-26 Bofors Ab Armor-piercing projectile with hard core
DE1428679C1 (de) * 1964-12-29 1977-09-15 Deutsch Franz Forsch Inst Hartkerngeschoss zur Bekaempfung von Panzerzielen
US3780658A (en) * 1971-09-03 1973-12-25 Ministre D Etat Charge Defense Undersized-caliber projectile with detachable sabot
US3890902A (en) * 1973-12-04 1975-06-24 Us Army Projectile
NO137297C (no) * 1976-07-01 1978-02-01 Raufoss Ammunisjonsfabrikker Prosjektil.
US4063511A (en) * 1976-07-21 1977-12-20 Bullard James M Spinning shot gun projectile
US4649829A (en) * 1984-11-02 1987-03-17 Olin Corporation Plastic armor piercing projectile

Also Published As

Publication number Publication date
DE3209593A1 (de) 1983-09-29
DE3371414D1 (de) 1987-06-11
US4697525A (en) 1987-10-06
EP0088898A1 (fr) 1983-09-21
US4635556A (en) 1987-01-13
ATE27060T1 (de) 1987-05-15

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