EP2179246B1 - Procédé de fabrication d'un projectile ainsi que projectile - Google Patents

Procédé de fabrication d'un projectile ainsi que projectile Download PDF

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Publication number
EP2179246B1
EP2179246B1 EP08785063.2A EP08785063A EP2179246B1 EP 2179246 B1 EP2179246 B1 EP 2179246B1 EP 08785063 A EP08785063 A EP 08785063A EP 2179246 B1 EP2179246 B1 EP 2179246B1
Authority
EP
European Patent Office
Prior art keywords
projectile
sabot
predetermined breaking
breaking points
wall
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.)
Not-in-force
Application number
EP08785063.2A
Other languages
German (de)
English (en)
Other versions
EP2179246A1 (fr
Inventor
Christian Baumann
Holger Brase
Thomas Heitmann
Michael Vagedes
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 Waffe Munition GmbH
Original Assignee
Rheinmetall Waffe Munition 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 Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Publication of EP2179246A1 publication Critical patent/EP2179246A1/fr
Application granted granted Critical
Publication of EP2179246B1 publication Critical patent/EP2179246B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/064—Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/065—Sabots carrying several projectiles

Definitions

  • the invention relates to a method for producing a projectile and the projectile thus produced with a subcaliber bullet core and a guide cage, which comprises a rear side acting on the bullet core plate-shaped driving element and a subsequent to the driving element, substantially cylindrical guide cage made of plastic.
  • a sabot projectile in which the front-side support and centering of the projectile core is effected by a relatively narrow annular support, which is connected via short webs to the outer wall of the sabot.
  • a second centering recording is in the clear inner cross section / caliber of the projectile.
  • the sabot has been longitudinally cut and has in the front area inwardly directed against the aircraft floor, centering brackets and in the rear area has a centering surface.
  • Predetermined breaking points are provided in the rear area of the sabot. The L josssehlitze supported by the predetermined breaking points allow the lever-like pivoting of the sabot elements.
  • the sabot is here a segmented, substantially hollow cylindrical guide cage made of a lightweight material with lower strength than steel.
  • a conical driving element is releasably inserted in the projectile direction.
  • the subcaliber projectile is additionally enclosed at its lower end by the guide cage and centered at its front to middle portion by a pierced support wall.
  • the drive element pushes the projectile through a gun barrel, while the drive or guide cage pulls the bullet.
  • the US 4,709,638 A which forms a starting point for claim 1, describes a projectile projecting a sabot.
  • This projectile has a drive element at the rear end of the projectile core.
  • the driving element and the projectile core are placed in an injection molding machine and molded with plastic.
  • the driving element and the projectile core are firmly connected to each other and sprayed on the driving element, a sealing strip.
  • the guide cage has, in the injection molding machine, axially extending webs at these locations less material, so that the sabot better tear at these points with the exit of the projectile from a gun barrel and can release the bullet core.
  • a tearing of the torn open sabot parts from the driving element takes place in the region of the sealing strip cast on the driving element.
  • the FR 2 642 161 A which forms a starting point for claim 10, relates to a projectile having a sabot having a driving element at the rear end of a projectile core.
  • the one-piece, longitudinal grooves having sabot is molded onto the drive element and encloses the projectile core with one of its two walls. Between these walls intermediate walls are integrated.
  • the projectile tip enveloping cap is placed on the surrounding the bullet core sabot and attached by means of ultrasonic welding to this.
  • the driving element made of a high-strength, low-density material.
  • the driving sleeve is for example a glass fiber reinforced polyamide.
  • the invention has for its object to provide in particular a KE-training projectile, which allows a more cost-effective production, without the durability and the Treffgenaulgkeit the projectile are adversely affected.
  • the invention is based essentially on the idea to implement a low-cost projectile core together with a drive element as depositor
  • the injection mold is chosen such that after the injection molding the contour of the guide cage (inner core and outer shell ) of the projectile cage.
  • the guide cage is generated directly by an injection process (process) and connected to the inserts (drive element, bullet) made of metal, aluminum, etc. Subsequent installation and adjustment to one certain external dimension (caliber) is eliminated, which causes a reduction in manufacturing or assembly time and thus a lower-cost projectile.
  • the material to be sprayed may be a plastic, fiber reinforced plastic or plastic-like material.
  • Such a producible projectile has a guide cage with an outer wall, which in continuation of the invention least two, but preferably three evenly distributed over the circumference arranged, may have in the axial direction predetermined breaking points, and adjoining the driving element, radially extending rear wall, which can also be provided with predetermined breaking points, which adjoin the predetermined breaking points of the outer wall, the predetermined breaking points are, if provided, according to the invention with injected, it is created a sabot, which can easily disassemble into several parts.
  • the projectile core is supported on at least three spaced as longitudinal ribs spacer elements on the inside of the outer wall, wherein in each case one longitudinal rib is associated with a guide cage segment defined by adjacent predetermined breaking points, and wherein the longitudinal ribs extend axially from the driving element into the bow-side region of the guide cage.
  • the integrally formed guide cage at least partially encloses the drive element on the rear side.
  • the longitudinal ribs may have front pocket-shaped recesses.
  • a conically tapering course of the longitudinal ribs extending from the rear wall to the front supports the detachment of the injection molds during the demoulding process.
  • the guide cage comprises a projectile body receiving, web-shaped sleeve, with which the longitudinal ribs are connected on the bullet side, wherein the web-shaped sleeve is provided with extending in the axial direction of predetermined breaking points.
  • the predetermined breaking points can extend radially through the sleeve wall to the projectile body.
  • a shootable from a 120 mm tank cannon according to the invention bullet It is in the illustrated projectile 1 to a practice floor.
  • the projectile 1 is composed of a projectile core 2, for example made of steel, and a guide cage 3 together.
  • the guide cage 3 encloses in its rear region a plate-shaped driving element 4, which consists for example of aluminum and consists of a glass or carbon fiber reinforced plastic (for example polyamide).
  • the guide cage 3 has an outer wall 6, which has on the front side a guide area 7, which (not shown) rests against the corresponding inner tube wall during passage of the cage floor 1 through a gun barrel.
  • On the inside at least two, preferably four uniformly distributed over the circumference and extending in the axial direction predetermined breaking points 8 are provided in the outer wall 6, so that adjacent predetermined breaking points in this embodiment four guide cage segments 9 define (in practice, an odd number of ribs or Predetermined breaking point preferred).
  • the corresponding guide cage segment 9 is supported via a formed as a longitudinal rib spacer 10 on a projectile core 2 comprehensive, web-shaped sleeve 11 from.
  • the longitudinal ribs 10 extend from a subsequent to the driving element 4 rear wall 12 into the bow-side region of the guide cage 3 and have to support the detachment behavior of the guide cage segments 9 when shooting the cage bullet 1 front pocket-shaped recesses 13.
  • the projectile core 2 comprehensive web-shaped sleeve 11 of the guide cage 3 also has in the axial direction extending predetermined breaking points 14 which extend through the sleeve wall to the surface of the projectile core 2, and with respect to the longitudinal axis 15 of the cage floor 1, the same angular position show how the predetermined breaking points 8 of the outer wall. 6
  • the rear wall 12 of the guide cage 3 has radial predetermined breaking points 16, which adjoin the predetermined breaking points 8 of the outer wall 6 and the predetermined breaking points 14 of the web-shaped sleeve 11.
  • the projectile core 2 and the driving element 4 e.g. by clamping, releasably connected to each other and inserted into a the contour of the guide cage 3 generating injection mold. Subsequently, the injection mold is then closed and started with the injection molding. In this case, the (in this embodiment) four guide cage segments 9 of the guide cage 3 are injected by means of four sprues.
  • the material flowing into the forming regions of the segments should meet at the intended breaking points. This creates so-called “welding lines", which weaken the material even further at the predetermined breaking point. That is why it is important to fill the four mold areas in parallel. Furthermore, the effect of the predetermined breaking point is still favored if an alignment of the fibers takes place parallel to the injection direction in the injection process.
  • the longitudinal ribs 10 should taper conically in the removal direction (which corresponds to the firing direction of the projectile) (for example with a cone angle of 1 °).
  • the invention is not limited to the embodiment described above.
  • the longitudinal ribs are supported directly on the surface of the projectile core.
  • the sprayer then has a different shape.
  • the projectile according to the invention may also be a combat projectile in which the projectile core is replaced, for example, by a penetrator made of a heavy metal.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Claims (11)

  1. Projectile (1), comprenant un noyau de projectile sous-calibré (2) et un sabot (3) en tant que sabot de guidage, qui comprend un élément propulsif (4) en forme de plaque agissant du côté arrière sur le noyau de projectile (2) et un sabot de guidage (3) en plastique ou en plastique renforcé par des fibres, de forme essentiellement cylindrique, se raccordant à l'élément propulsif (4), l'élément propulsif (4) étant incorporé fixement du côté arrière dans le sabot de guidage (3), le sabot de guidage (3) possédant une paroi extérieure (6) dans laquelle sont prévues au moins deux zones destinées à la rupture (8), réparties uniformément sur la périphérie et s'étendant dans la direction axiale, le sabot de guidage (3) possédant une paroi arrière (12) s'étendant radialement, se raccordant à l'élément propulsif (4), et le noyau de projectile (2) étant connecté à la surface interne de la paroi extérieure (6) par le biais d'au moins deux éléments d'espacement (10) réalisés sous forme de nervures longitudinales, une nervure longitudinale (10) étant à chaque fois associée à un segment de sabot de guidage (9) défini par des zones destinées à la rupture adjacentes (8), la nervure longitudinale s'étendant axialement depuis la paroi arrière (12) jusque dans la région du sabot de guidage (3) du côté avant, caractérisé en ce que la paroi arrière (12) est également pourvue de zones destinées à la rupture (16) qui se raccordent aux zones destinées à la rupture (8) de la paroi extérieure (6) et en ce que les nervures longitudinales (10) présentent une allure se rétrécissant coniquement, s'étendant vers l'avant depuis la paroi arrière (12) du sabot de guidage (3).
  2. Projectile selon la revendication 1, caractérisé en ce que le sabot de guidage (3) est réalisé d'une seule pièce et entoure au moins en partie du côté extérieur l'élément propulsif (4).
  3. Projectile selon la revendication 1 ou 2, caractérisé en ce que les nervures longitudinales (10) présentent, du côté avant, des évidements (17) en forme de cavités.
  4. Projectile selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le sabot de guidage (3) présente une douille (11) réalisée en forme d'âme, entourant le noyau de projectile (2), à laquelle sont connectées les nervures longitudinales (10) du côté du projectile, et en ce que la douille en forme d'âme (11) est également pourvue de zones destinées à la rupture (14) s'étendant dans la direction axiale, qui se raccordent aux zones destinées à la rupture (16) de la paroi arrière (12).
  5. Projectile selon la revendication 4, caractérisé en ce que les zones destinées à la rupture (14) s'étendent jusqu'à la surface du noyau de projectile (2).
  6. Projectile selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le sabot de guidage (3) se compose d'un polyamide renforcé par des fibres de verre ou de carbone.
  7. Projectile selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le sabot de guidage (3) présente quatre zones destinées à la rupture (8) réparties uniformément sur la périphérie de la paroi extérieure (6), s'étendant dans la direction axiale, les zones destinées à la rupture (8) étant tournées de 45° par rapport aux nervures longitudinales (10).
  8. Projectile selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le noyau de projectile (2) est pourvu d'un empennage conique (18).
  9. Projectile selon l'une quelconque des revendications 1 à 8, caractérisé en ce que dans un évidement correspondant (17) de la partie arrière du noyau de projectile (2) est vissé un traceur.
  10. Procédé de fabrication d'un projectile (1) selon l'une quelconque des revendications 1 à 9, dans lequel l'élément propulseur (4) et le noyau de projectile (2) sont connectés de manière détachable l'un à l'autre, et sont introduits et surmoulés en tant qu'insert dans un outil de moulage par injection produisant le contour du sabot de guidage (3), caractérisé en ce que le moule de moulage par injection fournit après l'opération de moulage par injection le contour du sabot de guidage (3) avec la douille en forme d'âme (11) et la paroi extérieure (6) du sabot de projectile, et des zones destinées à la rupture (8, 14, 16) sont injectées conjointement dans la paroi extérieure (6) et la paroi arrière (12).
  11. Procédé selon la revendication 10, caractérisé en ce qu'un traceur est vissé dans un évidement correspondant (17) de la partie arrière du noyau de projectile (2).
EP08785063.2A 2007-08-14 2008-07-25 Procédé de fabrication d'un projectile ainsi que projectile Not-in-force EP2179246B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007038486A DE102007038486A1 (de) 2007-08-14 2007-08-14 Verfahren zur Herstellung eines Geschosses sowie Geschoss
PCT/EP2008/006110 WO2009021607A1 (fr) 2007-08-14 2008-07-25 Procédé de fabrication d'un projectile ainsi que projectile

Publications (2)

Publication Number Publication Date
EP2179246A1 EP2179246A1 (fr) 2010-04-28
EP2179246B1 true EP2179246B1 (fr) 2014-09-03

Family

ID=40107446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08785063.2A Not-in-force EP2179246B1 (fr) 2007-08-14 2008-07-25 Procédé de fabrication d'un projectile ainsi que projectile

Country Status (6)

Country Link
US (1) US8561544B2 (fr)
EP (1) EP2179246B1 (fr)
KR (1) KR101460836B1 (fr)
DE (1) DE102007038486A1 (fr)
SG (1) SG188151A1 (fr)
WO (1) WO2009021607A1 (fr)

Families Citing this family (10)

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DE102007037738A1 (de) * 2007-08-09 2009-02-12 Rheinmetall Waffe Munition Gmbh Geschoss mit einem Führungskäfig und Pusherplatte mit beschleunigungsoptimierter Öffnung
DE102008028440A1 (de) * 2008-06-17 2009-12-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Drucksteuerventilanordnung mit Membranventilen zur Steuerung eines Fluiddrucks in einer ABS-Bremsanlage eines Fahrzeugs mit in einem Gehäuseteil einstückig integriertem Ventilsitz
DE102008029395A1 (de) * 2008-06-23 2009-12-24 Rheinmetall Waffe Munition Gmbh Treibkäfiggeschoss
US8424456B2 (en) 2009-10-05 2013-04-23 Amtec Corporation Non-dud signature training cartridge and projectile
US9410781B1 (en) * 2014-07-28 2016-08-09 The United States Of America As Represented By The Secretary Of The Army Fin-stabilized, muzzle-loaded mortar projectile with sabot
US9488455B1 (en) * 2015-01-22 2016-11-08 Consolidated Nuclear Security, LLC Sabot assembly
DE102015117018A1 (de) 2015-10-06 2017-04-06 Rheinmetall Waffe Munition Gmbh Penetrator sowie unterkalibriges Geschoss
US10859357B2 (en) 2017-06-09 2020-12-08 Simulations, LLC Sabot, bore rider, and methods of making and using same
US10921105B2 (en) 2017-06-09 2021-02-16 Simulations, LLC Product and method to decrease torsional loads induced in sabots and riders in rifled gun bores
KR101916360B1 (ko) 2018-05-18 2018-11-09 국방과학연구소 발사체의 접힘식 꼬리날개 보호 덮개

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Also Published As

Publication number Publication date
SG188151A1 (en) 2013-03-28
KR101460836B1 (ko) 2014-11-11
WO2009021607A1 (fr) 2009-02-19
US20100139518A1 (en) 2010-06-10
EP2179246A1 (fr) 2010-04-28
US8561544B2 (en) 2013-10-22
DE102007038486A1 (de) 2009-02-19
KR20100055472A (ko) 2010-05-26

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