CA2534842C - Universal ke projectile, in particular for medium-calibre munitions - Google Patents

Universal ke projectile, in particular for medium-calibre munitions Download PDF

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Publication number
CA2534842C
CA2534842C CA002534842A CA2534842A CA2534842C CA 2534842 C CA2534842 C CA 2534842C CA 002534842 A CA002534842 A CA 002534842A CA 2534842 A CA2534842 A CA 2534842A CA 2534842 C CA2534842 C CA 2534842C
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Prior art keywords
projectile
penetrator
universal
plastic
projectiles
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CA002534842A
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French (fr)
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CA2534842A1 (en
Inventor
Jakob Burri
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RWM Schweiz AG
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RWM Schweiz AG
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Publication of CA2534842A1 publication Critical patent/CA2534842A1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04Projectiles, 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
    • F42B12/06Projectiles, 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/34Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect expanding before or on impact, i.e. of dumdum or mushroom type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/367Projectiles fragmenting upon impact without the use of explosives, the fragments creating a wounding or lethal effect
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies

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  • 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)
  • Toys (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Vibration Dampers (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Confectionery (AREA)
  • Seasonings (AREA)
  • Artificial Filaments (AREA)

Abstract

The aim of the invention is to combine the cascade effect of frangible pellets (25) with sub-projectiles (27, 28, 30) consisting of a ductile heavy metal and thus to create ammunition (10) that combines the advantages of, for example, frangible pellets (25) of a central penetrator (24) with the advantages of the ductile heavy metals (27, 28) of an external penetrator (26). This permits an improved performance to be achieved for different targets even at low impact velocities. The external penetrator is arc-shaped or banana-shaped.

Description

Universal KE Projectile, in particular for Medium-Calibre Munitions The present invention relates to a universal kinetic-energy (KE) projectile, --to a method for manufacturing said projectile, and its use.

Known types of munitions frequently have no penetrative effect when used against modern targets, so that there is a need for a type of munition that has a powerful destructive effect at the target. This is achieved by means of a great fragmentation effect around and into the target. In addition, this destructive effect is enhanced by the blast that is generated.

EP 0 853 228 B 1 describes a projectile of this kind as well as a method for producing it.
By using this method it is possible to manufacture projectiles with a single or multi-part projectile body (penetrator or penetrator parts) of various shapes and sizes, and do so simply and rapidly. The projectile casing comprises a projectile tip that is attached rigidly to the jacket of the projectile; the projectile tip has an internal centering device within which the projectile is guided and held. The rear of the projectile jacket is closed off by a seal that partially encloses the projectile body. In such projectiles, which are referred to as full-calibre KE projectiles, the projectile jacket has a rear that is frequently of aluminum, but which may also be of steel. The ballistic tip of the projectile is also of aluminum, although it may also be of plastic.
Because of their kinetic energy, Frangible Armour Piercing (FAP) projectiles are effective against various targets. These projectiles have a core that is of frangible material that, according to EP 0 853 228 B1, can be made up of different frangible pellets. Both frangible and ductile heavy metals have been proposed as materials for these parts of the projectile bodies. The core can, for example, be covered with plastic by injection moulding. .

As is known, in the case of FAP projectiles performance at the target depends on their impact velocity. First, the tip of the projectile must break away from the projectile jacket in order that the frangible core can become effective. Energy is also needed for the frangible core to break away. Very often, at low impact velocities (for example at long ranges), the energy is so slight that the core does not fragment sufficiently, with the result that there is less dispersal in the target. In addition, it is characteristic of a core of this kind that-for example, during tests to simulate different targets-in a stacked target it shatters into a number of fragments. These fragments break up even more at the next plate in what is referred to as the cascade effect. These fragments can become so small that they do not have enough energy to enable them to penetrate the next plate, which is to say that the desired dispersal effect collapses after a few plates (at greater target depths).

The Internet address http://www.wehrtechnik.net/ wehrtechnik/frap.htmi sets out the advantages of a fragmenting payload (FRAP). Among their other features, such munitions, which are known as munitions for on-board cannon, no longer have high-explosive fillings and impact detonators. More details about FRAP munitions and pre-fragmented tungsten masses are provided in the paper titled "Fragmenting Payload Ammunition FRAP" that was presented by Allan Buckley and Pierre Freymond at the NDIA 37~' Gun & Ammo Symposium, 15 - 18 April 2002, in Panama City (http ://www. dtic.mil/ndia/2002 aun/buckley.pdf ).

It is the objective of the present invention to enhance the dispersal effect at the target.
Additionally, it is intended to achieve the greatest possible penetrative effect against a monobloc target.
According to an aspect of the invention, there is provided universal KE projectile with a projectile tip, a projectile jacket and a projectile base, which includes a central penetrator, an outer penetrator being attached around the central penetrator, said outer penetrator containing spherical and/or cylindrical ductile heavy metals, and being arc-shaped or banana-shaped.

The underlying concept of the present invention is to combine the cascade effect of the frangible pellets with sub-projectiles of ductile heavy metals, which is to say, to create a 2a munition in which the advantages of a central penetrator of, for example, frangible pellets are combined with the advantages of the heavy metals of an outer penetrator.
One property of ductile heavy metal is that it does not break up when it strikes the target plate, so that a good cone of fragmentation can develop.
DE 40 16 051 C2 describes a jacketed penetrator for a KE projectile that protects the pressure-sensitive penetrator as a ductile coating. This coating is secured to the penetrator in such a manner that it is rigid when fired, thereby permitting economical series production. In contrast to this, the outer penetrator, which is preferably arc-shaped and made up of individual sub-projectiles, is meant to trigger a buckling effect so that the projectile jacket that is positioned around the outer penetrator bursts immediately and the sub-projectiles are released. After assembly, these sub-projectiles are fixed within the outer penetrator by injected plastic; this entails the advantage that the projectile jacket surrounding the outer penetrator can be very thin. This thin jacket then simply opens in the target.

The central penetrator of frangible pellets is effective mainly in a monobloc target, and this makes this a universal projectile.

An FAP projectile with a fragmenting payload concept is also created.

The present invention is described in greater detail below on the basis of an embodiment shown in the drawings appended hereto. These drawings show the following:

Figure 1: a complete munition, in cross section;
Figure 2: a cross section through the front part of the projectile shown in Figure 1;
Figure 3: a variant of a cross section of the front part shown in Figure 1;
Figure 4: a further variant of Figure 1.

Figure 1 shows a munition 10 that fundamentally includes a projectile 1, a guide band 2, grooves 3, a cartridge case 4, and a propellant charge 5.
In order to show it with greater clarity, the projectile 2 is shown in cross section in Figure 2, this Figure 2 incorporating a first embodiment.

The projectile 2-a universal KE projectile-comprises a projectile tip 20, a projectile jacket 21, and a projectile base 22. A central penetrator is numbered 24; it is preferred that this be made up of frangible pellets 25, although in can consist of one piece. In many instances it is referred to as the projectile core. An outer penetrator, numbered 26, consists of spherical 27, cylindrica128 (cylinder-like or similar, and/or cuboid or barrel-shaped) ductile heavy metals (Figure 3) that are referred to here as sub-projectiles 27, 28.
In a further variant shown in Figure 4, an end penetrator 29, preferably the end of the frangible central penetrator 24, has spherical or cylindrical ductile heavy metals 30 that are similarly referred to as sub-projectiles.

In all the variants, the outer penetrator 26 preferably consists of an arc-shaped or banana-shaped form or arrangement in order to initiate the buckling effect, so that the projectile jacket 21 ruptures and the sub-projectiles 27, 28 are liberated. When the munition 10 strikes a target (not shown in greater detail herein), in addition to the projectile tip 20, the projectile jacket 21 is also destroyed with the help of the outer penetrator 26. In their turn, the sub-projectiles 27, 28 that are liberated assist the central penetrator 24 or the pellets 25 as they penetrate the target. A further improvement (of the fragment distribution) can be achieved by the use of the end penetrator 29. The sub-projectiles 30 play a supporting role in this, too.

The projectile tip 20 as well as the projectile jacket 21 can be of aluminum.
As an alternative, the projectile tip 20 can be of injection-moulded material, preferably of a plastic. It is preferred that this plastic be a highly heat resistant, fibre reinforced thermo-plastic. This also applies to the projectile jacket, which can also be of plastic; a combination of plastic and steel is recommended.

In order to override the tolerances when the projectile is being assembled, and in order to keep the sub-projectiles 27, 28 outside, in one preferred embodiment plastic is injected from the projectile tip 20. It is also possible to inject the plastic from the base end. This variant requires only a small hole that is preferably made centrally in the base area. The use of plastic permits the use of a very thin projectile jacket 21. The method that is associated with this is simple and permits cost effective fabrication.

Claims (14)

  1. Claims Universal KE projectile (1) with a projectile tip (20), a projectile jacket (21) and a projectile base (22), which includes a central penetrator (24), an outer penetrator (26) being attached around the central penetrator (24), said outer penetrator containing spherical (27) and/or cylindrical (28) ductile heavy metals, and being arc-shaped or banana-shaped (28).
  2. 2. Universal KE projectile as defined in Claim 1, characterized in that the central penetrator (24) is composed of frangible pellets (25).
  3. 3. Universal KE projectile as defined in Claim 1, characterized in that the outer penetrator (24) is formed in one piece.
  4. 4. Universal KE projectile as defined in one of the Claims 1 to 3, characterized in that an end penetrator (29) in the rear part of the central penetrator (24) features spherical and/or cylindrical heavy metals (30).
  5. 5. Universal KE projectile as defined in one of the preceding Claims 1 to 4, characterized in that the projectile tip (20) and the projectile jacket (21) that surrounds the outer penetrator (26) and the central penetrator (24) can be of aluminum.
  6. 6. Universal KE projectile as defined in one of the preceding Claims 1 to 4, characterized in that the projectile tip (20) is formed from injected or injectable material such as plastic.
  7. 7. Universal KE projectile as defined in one of the preceding Claims 1 to 4, characterized in that the projectile jacket (21) that surrounds the outer penetrator (26) and the central penetrator (24) can be of plastic or a combination of plastic and steel or aluminum.
  8. 8. Universal KE projectile as defined in one of the preceding Claims 1 to 7, characterized in that the plastic is a fibre reinforced thermoplastic that is resistant to high temperatures.
  9. 9. Universal KE projectile as defined in one of the preceding Claims 1 to 8, characterized in that the ductile heavy metals (27, 28) are fixed in position within the outer penetrator (26) by plastic.
  10. 10. Method for producing the projectile as defined in one of the preceding Claims 1 to 9, which includes the following steps:
    - centering the central penetrator (24) with or without the end penetrator (29) and its sub-projectiles (30);
    - attaching the outer penetrator (26) with the sub-projectiles (28, 29) around the central penetrator (24);
    - fixing the sub-projectiles (28, 29) of the outer penetrator (26) with plastic;
    - creating a projectile jacket (21) that is thin, at least in the area of the outer penetrator.
  11. 11. Method as defined in Claim 10, characterized in that the plastic used to fix the sub-projectiles (27, 28) within the outer penetrator (26) is injected from the projectile tip (20).
  12. 12. Method as defined in Claim 10, characterized in that the plastic can also be injected from the base end.
  13. 13. Munition (10) consisting of a cartridge case (4), a propellant charge (5), and a projectile (1) as defined in one of the Claims 1 to 8.
  14. 14. Munition as defined in Claim 13, characterized in that the munition (10) is a medium-calibre munition.
CA002534842A 2004-01-30 2004-11-18 Universal ke projectile, in particular for medium-calibre munitions Active CA2534842C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004005042.2 2004-01-30
DE102004005042A DE102004005042B4 (en) 2004-01-30 2004-01-30 Universal KE bullet, especially for mid-caliber munitions
PCT/EP2004/013078 WO2005073664A1 (en) 2004-01-30 2004-11-18 Multi-purpose cascade projectile, in particular for medium-calibre ammunition

Publications (2)

Publication Number Publication Date
CA2534842A1 CA2534842A1 (en) 2005-08-11
CA2534842C true CA2534842C (en) 2008-05-06

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ID=34813084

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002534842A Active CA2534842C (en) 2004-01-30 2004-11-18 Universal ke projectile, in particular for medium-calibre munitions

Country Status (7)

Country Link
EP (1) EP1625346B1 (en)
AT (1) ATE340985T1 (en)
CA (1) CA2534842C (en)
DE (2) DE102004005042B4 (en)
ES (1) ES2270389T3 (en)
NO (1) NO330450B1 (en)
WO (1) WO2005073664A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005039901B4 (en) 2005-08-24 2015-02-19 Rwm Schweiz Ag Projectile, in particular for medium caliber ammunition
DE102015117018A1 (en) 2015-10-06 2017-04-06 Rheinmetall Waffe Munition Gmbh Penetrator and subcaliber projectile
US10330448B2 (en) * 2015-12-16 2019-06-25 Ruag Ammotec Ag Fragmentation projectile and method for its manufacturing
DE102017106526A1 (en) 2017-03-27 2018-10-11 Rheinmetall Waffe Munition Gmbh Bullet, especially in the middle caliber range
CN110695356B (en) * 2019-11-08 2021-05-14 中国兵器装备集团自动化研究所 Integrated projectile body manufacturing method based on powder feeding type additive manufacturing method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080900A (en) * 1950-11-24 1978-03-28 The Rand Corporation Projectile
DE2554600C1 (en) * 1975-12-04 1988-06-01 Deutsch Franz Forsch Inst Balancing bullet
DE3036463A1 (en) * 1980-09-27 1985-12-19 Rheinmetall GmbH, 4000 Düsseldorf TARGET-BREAKING RIFLE BULLET
DE8218780U1 (en) * 1982-07-01 1983-09-08 Diehl GmbH & Co, 8500 Nürnberg SUB-CALIBRARY FLOOR
DE3617415C2 (en) * 1986-05-23 1995-09-07 Mauser Werke Oberndorf Sub-caliber sabot bullet
DE4016051C2 (en) * 1990-05-18 1994-10-06 Rheinmetall Gmbh Jacket penetrator
DE4024543C2 (en) * 1990-08-02 1998-10-08 Diehl Stiftung & Co Bullet
US5198616A (en) * 1990-09-28 1993-03-30 Bei Electronics, Inc. Frangible armor piercing incendiary projectile
FR2673461B1 (en) * 1991-02-28 1993-05-07 Giat Ind Sa PERFORATING AND FRAGMENTABLE PROJECTILE.
EP0853228B1 (en) * 1997-01-14 2002-03-06 Oerlikon Contraves Pyrotec AG Projectile and manufacturing method therefor
ATE205937T1 (en) * 1999-02-25 2001-10-15 Contraves Pyrotec Ag LOWER CALIBER BULLET

Also Published As

Publication number Publication date
ES2270389T3 (en) 2007-04-01
DE502004001619D1 (en) 2006-11-09
DE102004005042A1 (en) 2005-09-01
NO20055503D0 (en) 2005-11-22
NO330450B1 (en) 2011-04-18
EP1625346B1 (en) 2006-09-27
ATE340985T1 (en) 2006-10-15
WO2005073664A1 (en) 2005-08-11
DE102004005042B4 (en) 2008-04-03
NO20055503L (en) 2006-02-13
CA2534842A1 (en) 2005-08-11
EP1625346A1 (en) 2006-02-15

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