EP4283244A1 - Projectile pour cartouche d'arme à feu portative à noyau dur et son procédé de fabrication - Google Patents

Projectile pour cartouche d'arme à feu portative à noyau dur et son procédé de fabrication Download PDF

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Publication number
EP4283244A1
EP4283244A1 EP23174473.1A EP23174473A EP4283244A1 EP 4283244 A1 EP4283244 A1 EP 4283244A1 EP 23174473 A EP23174473 A EP 23174473A EP 4283244 A1 EP4283244 A1 EP 4283244A1
Authority
EP
European Patent Office
Prior art keywords
shoe
core
projectile
jacket
hard
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.)
Pending
Application number
EP23174473.1A
Other languages
German (de)
English (en)
Inventor
Andreas Christen
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.)
Metallwerk Elisenhuette GmbH
Original Assignee
Metallwerk Elisenhuette 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 Metallwerk Elisenhuette GmbH filed Critical Metallwerk Elisenhuette GmbH
Publication of EP4283244A1 publication Critical patent/EP4283244A1/fr
Pending 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 bullet with a hard core for a cartridge for handguns, as well as a cartridge with such a bullet inserted into the neck of the cartridge case.
  • Jacketed bullets are also known for such cartridges, which contain a heavy core, for example made of lead, in a jacket made of sheet metal. Such bullets are suitable for soft targets, but when they hit a hard target, such as an armored target, they deform significantly without penetrating the target.
  • Such projectiles have a jacket, a hard core arranged in the jacket and a carrier holding the hard core in the jacket, the carrier being designed as a shoe in the rear part of the projectile. When viewed in the intended direction of flight of the bullet, the shoe is open towards the front for the insertion of the hard core. The hard core sits flush with its rear cylindrical tail in the shoe.
  • the core In order for the bullet to have an increased penetration effect with high precision and accuracy, especially when hitting armored targets, the core must be precisely centered in the shoe.
  • the tight fit creates an air cushion when the core is inserted into the shoe, like a piston, which hinders production.
  • the shoe requires a circumferential groove in its outer cylindrical surface that rests on the jacket, which is referred to as a relief groove.
  • This relief groove allows the material of the casing to escape into this free space in the event of radial pressure, which occurs when the shot is pressed into the fields and rifling of the barrel, in order to avoid overloading the casing material. Otherwise, the bullet casings may disassemble in front of the barrel muzzle because the casings were overloaded and torn during pressing.
  • the relief groove is created by turning with material losses.
  • the shoe For cost reasons, it would be desirable to produce the shoe as a pressed part without further post-processing, such as turning to produce the relief groove.
  • the pressed part can be mass-produced more cost-effectively than a turned part.
  • the invention is based on the object of creating an improved bullet with a hard core for a cartridge for handguns, or a cartridge with such a bullet, the bullet of which has an increased penetrating effect with high precision and accuracy, especially when hitting armored targets.
  • the hard core bullet initially has three components, namely a jacket that forms the outer shape of the bullet, a core made of hard material such as steel, sintered material, hard metal, tungsten carbide or hardened steel and a carrier for the core, which is in the form of a shoe, i.e. it is designed like a quiver, in which the hard core is inserted with its rear end.
  • a jacket that forms the outer shape of the bullet
  • a core made of hard material such as steel, sintered material, hard metal, tungsten carbide or hardened steel
  • a carrier for the core which is in the form of a shoe, i.e. it is designed like a quiver, in which the hard core is inserted with its rear end.
  • the shell of the projectile which is made of sheet metal, can in particular be made of copper, steel or tombac. Its task is to hold the hard core and the shoe-shaped support of this hard core. In addition, the jacket takes on the internal and external ballistic tasks of a normal bullet, as it can easily be given the required shape and external shape.
  • the hard core consists of hard materials such as steel or very hard materials such as sintered material, tungsten carbide, hard metal, heavy metal or hardened steel in order to achieve the desired penetration performance of the bullet. Because of the extreme hardness of the core, its external shape can hardly be changed after completion, so that manufacturing tolerances must be compensated for by the other parts of the projectile, namely the shoe that serves as the core carrier and the jacket.
  • the hard core therefore sits with its front or outer end more or less freely within the ballistic jacket and only touches it in the area of its circumferential shoulder. Furthermore, it sits in the open part of the shoe.
  • the jacket of the projectile When the hard-core projectile hits an armored target, the jacket of the projectile is opened at its front tip and remains, so to speak, stuck to the surface of the hard target.
  • the hard core on the other hand, penetrates the hard or armored target.
  • the penetrating ability of the core is further enhanced by impacting the mass of the wearer or shoe when penetrating the hard target.
  • the special feature according to the invention lies in the design of the shoe-shaped carrier: the inner cross section of the open part of the shoe, viewed in the circumferential direction of the cross section, rests alternately on the hard core in sections and is spaced from the hard core.
  • the sections in which the inner cross section of the open part of the shoe, viewed in the circumferential direction of the cross section, alternately rest against the hard core and are spaced apart from the hard core are evenly distributed in order to avoid imbalances.
  • External ballistic advantages have been shown if three or four sections are provided in which the inner cross section rests on the core. The accuracy may be increased by the fact that the 3 or 4 point mounting of the core in the shoe centers the core particularly well. The shoe can therefore be mass-produced with greater tolerance and therefore more quickly.
  • the inner cross-section of the open part of the shoe is essentially circular, but with varying cross-sectional radii Rmax and Rmin, the smallest cross-sectional radius Rmin being where the cross-section abuts the core and the maximum cross-sectional radius Rmax being where the cross-section is from the hard core is maximally spaced. If the radii do not change suddenly from Rmin to Rmax, but rather slowly change over the circumference, the result is a component which can be easily and quickly mass-produced, preferably by compression molding, in particular without complex post-processing.
  • the inner cross section forms a rounded polygon
  • the shoe is expediently designed to accommodate the rear end of the hard core of the projectile. Its kinetic energy is transferred to the core when it hits a target.
  • the outer cross section of the shoe is expediently circular and the outer shape of the shoe is adapted to the casing of the projectile in the rear area of the same
  • the hard core of the bullet consists of steel or a very hard material, such as sintered material, heavy metal, tungsten carbide, hard metal or hardened steel.
  • the jacket of the bullet is made of copper, steel or tombac.
  • the shoe is a pressed part, preferably made of copper, a copper alloy, tombac, brass or a metal, rapid mass production is possible.
  • the outer shape of the shoe is designed as a cylinder, which is preferably free of circumferential relief grooves on the outer circumference.
  • This shape can be created quickly and without any post-processing as a pressed part.
  • This relief groove offers the material of the jacket the opportunity to escape into the empty space of the relief groove when radial pressure occurs in order to avoid overloading the jacket material.
  • the shape of the shoe according to the invention makes it possible to produce the shoe as a pressed part without post-processing.
  • the pressed part can be formed in a single cycle.
  • the hard core of the projectile has a cylindrical shaft that fits into the open part of the shoe and which lies at points against the jacket from the inside angled shoulder and a sharp point located at a distance from the front, outer end of the coat.
  • the core is preferably first inserted into the shoe and then the shoe with core is inserted with some pre-tension into the already drawn bullet casing.
  • a cartridge for handguns is claimed, with a cartridge case provided with a primer cap and containing a propellant charge and with a bullet according to the invention inserted into the neck of the cartridge case.
  • the preferred small caliber rifles are .223 Rem., .308 Win., .300 Win. Mag., .338 Lap. Mag., .50 BMG, 5.56 mm x 45, 7.62 mm x 51, 7.62 mm x 67, .300 AAC Blackout, 8.6 mm x 70, 12.7 mm x 99, as there is a higher loss of material due to the previously machining of the shoes arises.
  • a shoe made of plastic is also possible for the mass production of the projectile, in which case the plastic injection molding process should be considered a pressing process in the sense of the invention.
  • the expert selects the materials for the bullet jacket and shoe from suitable materials, such as copper, a copper alloy, tombac, brass or an aluminum metal or a suitable aluminum alloy, taking into account the weight of the hard core.
  • suitable materials such as copper, a copper alloy, tombac, brass or an aluminum metal or a suitable aluminum alloy, taking into account the weight of the hard core.
  • the bullet weight is 4 g for a bullet with a caliber of 5.56 mm x 45.
  • heavier materials such as tombac are selected for the shoe and bullet jacket.
  • lighter materials such as aluminum for the shoe and steel for the jacket are selected for the shoe and bullet jacket.
  • the invention creates a precision cartridge for handguns, for example up to a caliber of 15 mm, whose projectile has the excellent ballistic properties known from jacketed projectiles and thus ensures high accuracy and, on the other hand, develops an increased penetrating effect on hard and armored targets because it is made of hard metal Sintered metal or a core made of tungsten carbide or other sintered materials is provided, the external shape of which is adapted to the desired penetration effect without having to be based on ballistic requirements. Production is more effective thanks to the novel shoe described according to the invention, which can be produced as a pressed part.
  • the cartridge 1 shown has a cartridge case 2 and a bullet 4 inserted into the narrowed neck 3 of the cartridge case, which is designed as a hard-core bullet.
  • the cartridge case 2 has a conically tapered base body 5 with a foot 6 molded onto it, which contains an extraction groove 7 and a primer cap 8 embedded in it.
  • the cartridge case 2 has a frusto-conical shoulder 9 , which forms a connection between the conical base body 5 and the narrowed neck 3 of the cartridge case 2 .
  • a propellant charge 10 consisting of nitrocellulose powder is accommodated within the cartridge case 2 .
  • Recognizable projectile 4 essentially consists of three parts, namely a jacket 11 which determines the outer and inner ballistic shape, a hard core 12 covered by this jacket 11 and a carrier or shoe 13 which holds the core 12 within the jacket 11 and which has a certain mass and its external shape is adapted to the shape of the jacket and, on the other hand, in its open part 13a it receives the hard core 12 like a quiver or in the form of a shoe and holds it within the projectile.
  • the shoe 13 designed as a shoe or quiver thus fulfills the function of a holder for the hard core 12 made of hard material such as tungsten carbide, hard metal or sintered material, the external shape of which can no longer be influenced after production, in the outer jacket that determines the ballistic shape of the projectile 4 11.
  • the mass of the shoe 13 supports the penetration energy or penetrating power of the hard core 12 when striking a hard target, such as an armored target.
  • the shoe 13 has a foot 13b made of solid material, the outer contour of which is adapted to the ballistic shape of the jacket 11 of the projectile 4 in order to ensure a secure fit of the shoe 13 in the projectile 4 .
  • a blind hole is incorporated or formed into it, which forms the open part 13a for properly receiving the rear end of the hard core 12 .
  • the shoe 13 thus forms a circumferential, raised collar as lateral support for the hard core 12 inserted into the shoe 13 .
  • the core 12 which is made of particularly hard material such as hard metal, tungsten carbide or sintered material, has a cylindrical base body 18, which is connected to its rear end inside the collar 17 in the open part 13a of the shoe 13 .
  • This base body 18 merges via an angular shoulder 19 into a sharp tip 20 , which forms the front end of the core 12 .
  • This tip 20 is at a distance from the outer rounded, tip-shaped end 21 of the casing 11 and only touches this end when the casing 11 of the projectile 4 is deformed when it hits a hard target.
  • the outer end 21 of the jacket 11 is pressed inwards towards the sharp tip 20 of the hard core 12 and is thereby deformed.
  • the hard core 12 is pushed forward towards the outer end 21 of the jacket 11 .
  • the angled shoulder 19 resting on the jacket 11 tears the jacket 11 open.
  • the tip 20 hits the outer end 21 of the jacket 11 , the jacket 11 is torn open here too.
  • the hard core 12, which is virtually non-deformable penetrates the hard target and penetrates it with high precision.
  • the mass of the shoe 13 supports the penetration movement or penetration energy of the core 12 when penetrating the target and penetrating the hard target. Since the core 12 practically does not deform, precise hits and smooth penetrations result.
  • Fig. 3 shows a cross section through the projectile 4 at the level of the open part 13a of the shoe 13.
  • the shoe 13 is inserted and held in the projectile jacket 11 .
  • the hard core is inserted into the collar of the open part 13a of the shoe 13 . Viewed over the circumference of the open part, the core 12 does not rest against the inner cross section 14a, 14b of the open part 13a of the shoe everywhere. Sections alternate in the direction of travel in which the inner cross section 14b lies against the hard core 12 and the inner cross section 14a is spaced from the hard core 12 . In the floor 4 shown, the core 12 is held by three adjacent sections 14b and thus centered in the shoe 13 . The Other sections, in which the inner cross section 14a is spaced from the hard core 12 and thereby enclose a free space 15 , enable the jacket material to be picked up, which is displaced when the bullet is squeezed into the fields and rifling of the barrel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP23174473.1A 2022-05-25 2023-05-22 Projectile pour cartouche d'arme à feu portative à noyau dur et son procédé de fabrication Pending EP4283244A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022205242.0A DE102022205242B4 (de) 2022-05-25 2022-05-25 Geschoss für eine Patrone für Handfeuerwaffen mit hartem Kern, sowie Verfahren zu dessen Herstellung

Publications (1)

Publication Number Publication Date
EP4283244A1 true EP4283244A1 (fr) 2023-11-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23174473.1A Pending EP4283244A1 (fr) 2022-05-25 2023-05-22 Projectile pour cartouche d'arme à feu portative à noyau dur et son procédé de fabrication

Country Status (2)

Country Link
EP (1) EP4283244A1 (fr)
DE (1) DE102022205242B4 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710113A1 (de) * 1997-03-12 1998-09-17 Elisenhuette Metallwerk Patrone für Handfeuerwaffen
EP0895572A1 (fr) * 1996-04-26 1999-02-10 Bofors Vanäsverken AB Obus de petit calibre
US20170080498A1 (en) * 2010-11-10 2017-03-23 True Velocity, Inc. Method of making a projectile by metal injection molding

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB592538A (en) 1941-12-22 1947-09-22 Lumalampan Ab Improvements in projectiles of small calibre
GB601686A (en) 1942-02-27 1948-05-11 Lumalampan Ab Improvements in and relating to projectiles
FR2774162A1 (fr) 1998-01-28 1999-07-30 Anthena Soc Projectile a guide conique polygonal pour arme a feu a canon raye, et munition comportant un tel projectile
ATE443242T1 (de) 2004-05-11 2009-10-15 Ruag Ammotec Bleifreies geschoss

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0895572A1 (fr) * 1996-04-26 1999-02-10 Bofors Vanäsverken AB Obus de petit calibre
DE19710113A1 (de) * 1997-03-12 1998-09-17 Elisenhuette Metallwerk Patrone für Handfeuerwaffen
US20170080498A1 (en) * 2010-11-10 2017-03-23 True Velocity, Inc. Method of making a projectile by metal injection molding

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Publication number Publication date
DE102022205242B4 (de) 2024-02-15
DE102022205242A1 (de) 2023-11-30

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