EP2407747A2 - Projectile avec pénétrateur à cylindre creuse - Google Patents

Projectile avec pénétrateur à cylindre creuse Download PDF

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Publication number
EP2407747A2
EP2407747A2 EP11172327A EP11172327A EP2407747A2 EP 2407747 A2 EP2407747 A2 EP 2407747A2 EP 11172327 A EP11172327 A EP 11172327A EP 11172327 A EP11172327 A EP 11172327A EP 2407747 A2 EP2407747 A2 EP 2407747A2
Authority
EP
European Patent Office
Prior art keywords
projectile
tube casing
rear part
graduated tube
graduated
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.)
Withdrawn
Application number
EP11172327A
Other languages
German (de)
English (en)
Other versions
EP2407747A3 (fr
Inventor
Jan Kusák
Ladislav Lehký
Petr Pechoucek
Pavel Prchal
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.)
Explosia AS
Original Assignee
Explosia AS
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 Explosia AS filed Critical Explosia AS
Publication of EP2407747A2 publication Critical patent/EP2407747A2/fr
Publication of EP2407747A3 publication Critical patent/EP2407747A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F42B12/34—Projectiles, 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
    • 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
    • F42B12/36—Projectiles, 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
    • F42B12/367—Projectiles fragmenting upon impact without the use of explosives, the fragments creating a wounding or lethal effect

Definitions

  • the invention relates to the projectile with tubular penetrator, which comprises a ballistic cap mounted on the front opened section of the tube casing, which is filled with filler material, while the tube casing is made of material with expressively higher density than the density of filler material.
  • PELE Pieris Enhanced Lateral Efficiency
  • This type of penetrators is generally known for example from DE patent No. 197 00 349 (analogy - US 6 659 013 ), which discloses a projectile comprising a tube casing of material with high density (e.g. of wolfram alloy, depleted uranium, high-strength steel, etc.), while in cavity of the tube casing a filler material of low density is positioned (e.g. plastic, aluminium or its alloy, etc.).
  • Principle of the desired effect of the projectile is a sufficient difference of material density of cylindrical body and the filler material. Once such projectile hits the target, e.g.
  • the tube casing penetrates with its face side into the target, e.g. into the armour and it cuts out from it approximately a circle segment of a lower thickness, than the thickness of the affected wall of the target was before impact of the projectile.
  • the segment being cut-out from a wall of the target during this process is supported by an impact compressed filler material, through which a radial pressure having magnitude of giga-bars in order is created in the filler material. This pressure acts upon the tube casing in radial direction and opens it.
  • the tube casing After passing the wall of the target, e.g. the armour, the tube casing being opened gradually splits into splinters and upon assistance of fragments of armour, a fragment cluster widening progressively in conical manner is created.
  • the goal of this invention is to remedy or at least minimise the disadvantages of the background art.
  • the goal of the invention has been achieved through a projectile with tubular penetrator, whose principle consists in that, the tube casing from its front to its rear end features a decreasing outer diameter and on its rear end it is closed with a bottom and provided with a thread, on which the rear part of the projectile is screwed-on, which in direction towards the front end of the tube casing covers a section of length of the tube casing.
  • Projectile according to the invention shows utilisation of a whole cross-section for an optimum piercing effect and there are created tens of pieces of effective fragments in a progressively widening cone of fragment cluster. Another advantage of the solution according to the invention is that the fragment effect is achieved totally without usage of an explosive, only through optimising the shape and structural design of individual parts of the projectile. Another advantage is that this invention may be effectively used already from the calibre of 20 mm and it may be produced from available raw materials.
  • the invention is schematically represented in the drawing in longitudinal section.
  • the projectile comprises a ballistic cap 1 , which is in a suitable manner positioned on the front opened end of the tubular penetrator, whose structural embodiment will be described in further text.
  • the ballistic cap 1 is preferably a thin-walled one and it is on the front opened end of the tubular penetrator screwed-on or pressed in.
  • the tubular penetrator comprises the tube casing 2 with graduated outer diameter, while the tubular casing 2 has the largest diameter on its front end. Towards its rear end, where the tube casing is enclosed with the bottom 20 , the diameter of the tube casing 2 decreases gradually, e.g. by a step-shaped and/or conical transition 22 .
  • the graduated tube casing 2 is made of material with a high density, e.g. of high-strength steel or of wolfram alloy (tungsten carbide) with strength limit Rm min. 1550 MPa and density cca 17700 kg.m -3 , etc.
  • the cavity in the graduated tube casing 2 by its shape or profile in the front section in principle copies the outer shape or profile of the graduated tube casing 2 and it is nearly entirely filled with the filler material 5 of a low density when compared with density of material of the graduated tube casing 2 .
  • the filler material may overlap the face of the graduated tube casing 2 , while the moment for beginning of opening the graduated tube casing 2 is set by the size of this overlap.
  • the thread 21 is performed, e.g. thread with a small pitch M10 x 0,75, on which the rear part 4 of the projectile is screwed-on, which directs to the front end of the graduated tube casing 2 , and which terminates in that area of the graduated tube casing 2 , in which the largest outer diameter of the graduated tube casing 2 begins to decrease.
  • the rear part 4 of projectile by its inner shape copies the outer shape of the graduated tube casing 2 .
  • the rear part 4 of projectile is made e.g. of duralumin of a high strength limit, that means of material with a sufficient mechanical properties and with a lower price than material of the graduated tube casing 2 .
  • At least one guiding rim 3 of a suitable material e.g. metal (copper, copper alloy, etc.), or plastic (polyamide, etc.).
  • the rear part 4 of projectile on its front end is provided with a conical mating surface 40 , by which it fits against the conical transition 22 on the graduated tube casing 2 , through which a necessary alignment of penetrator is secured.
  • Assembly of the graduated tube casing 2 and of the rear part 4 of projectile features a total slenderness expressed as a ratio of length of this assembly to calibre of the projectile being equal or approximately equal to 2,0 - 2,5 and simultaneously the slenderness of the rear part 4 of the projectile expressed as a ratio of length of the rear part 4 of projectile to outer diameter of the rear part 4 of projectile is equal or approximately equal to 1,0 - 1,5, which corresponds to the prerequisite for usage of the entire cross-section of the projectile for optimum piercing effect and creating of several tens of pieces of active fragments in a fragment cluster.
  • the bottom 20 of graduated tube casing 2 considerably contributes to achieving a high piercing effect to the wall of a target, e.g. an armour and positively influences also creating of fragment cluster, while the rear part 4 of projectile participates in a sufficient number of active fragments as well as in formation of progressively widening cone of fragment cluster after the penetrator passes the wall of a target.
  • the invention may be utilised as a piercing projectile with combined piercing and enhanced fragment effect without presence of explosive, which may be produced of available raw materials.

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)
EP11172327.6A 2010-07-12 2011-07-01 Projectile avec pénétrateur à cylindre creuse Withdrawn EP2407747A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2010-542A CZ306529B6 (cs) 2010-07-12 2010-07-12 Střela s trubkovým penetrátorem

Publications (2)

Publication Number Publication Date
EP2407747A2 true EP2407747A2 (fr) 2012-01-18
EP2407747A3 EP2407747A3 (fr) 2015-02-18

Family

ID=44763684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11172327.6A Withdrawn EP2407747A3 (fr) 2010-07-12 2011-07-01 Projectile avec pénétrateur à cylindre creuse

Country Status (2)

Country Link
EP (1) EP2407747A3 (fr)
CZ (1) CZ306529B6 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3034990B1 (fr) 2014-12-19 2018-09-19 Diehl Defence GmbH & Co. KG Projectile

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700349C1 (de) 1997-01-08 1998-08-20 Futurtec Ag Geschoß oder zur Bekämpfung gepanzerter Ziele

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU36782A1 (fr) * 1959-01-19
US3795196A (en) * 1972-12-27 1974-03-05 Mauser Werke Ag Projectile with a loose hard core
DE2757665C2 (de) * 1977-12-23 1984-12-20 Rheinmetall GmbH, 4000 Düsseldorf Drallstabilisiertes Ringgeschoß
PL192798B1 (pl) * 1999-05-06 2006-12-29 G Unitarnoe Predpr Kb Priboros Kula przebijająca pancerz i sposób jej wytwarzania
AU2003240740A1 (en) * 2002-06-26 2004-01-19 Geke Technologie Gmbh Projectile or warhead
DE102006025330A1 (de) * 2006-05-31 2007-12-06 WEIHRAUCH, Günter Geschoss, Wirkkörper oder Gefechtskopf zur Bekämpfung massiver, strukturierter und flächenhafter Ziele
FR2915563B1 (fr) * 2007-04-30 2010-10-15 Nexter Munitions Projectile generateur d'eclats
FR2917492B1 (fr) * 2007-06-18 2011-03-18 Nexter Munitions Projectile generateur d'eclats
CZ20190U1 (cs) * 2009-09-09 2009-11-03 VOP-026 Šternberk, s.p. Průbojná střela s tvrdým jádrem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700349C1 (de) 1997-01-08 1998-08-20 Futurtec Ag Geschoß oder zur Bekämpfung gepanzerter Ziele
US6659013B1 (en) 1997-01-08 2003-12-09 Futurec Ag C/O Beeler + Beeler Treuhand Ag Projectile or war-head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3034990B1 (fr) 2014-12-19 2018-09-19 Diehl Defence GmbH & Co. KG Projectile

Also Published As

Publication number Publication date
CZ306529B6 (cs) 2017-03-01
CZ2010542A3 (cs) 2012-01-25
EP2407747A3 (fr) 2015-02-18

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