EP1715287B1 - Warhead and projectile or missile comprising such a warhead - Google Patents

Warhead and projectile or missile comprising such a warhead Download PDF

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Publication number
EP1715287B1
EP1715287B1 EP05445022A EP05445022A EP1715287B1 EP 1715287 B1 EP1715287 B1 EP 1715287B1 EP 05445022 A EP05445022 A EP 05445022A EP 05445022 A EP05445022 A EP 05445022A EP 1715287 B1 EP1715287 B1 EP 1715287B1
Authority
EP
European Patent Office
Prior art keywords
stopper
warhead
charge unit
liner
diameter
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.)
Active
Application number
EP05445022A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1715287A1 (en
Inventor
Thomas Widlund
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.)
Saab AB
Original Assignee
Saab AB
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 Saab AB filed Critical Saab AB
Priority to ES05445022T priority Critical patent/ES2375713T3/es
Priority to AT05445022T priority patent/ATE538357T1/de
Priority to EP05445022A priority patent/EP1715287B1/en
Publication of EP1715287A1 publication Critical patent/EP1715287A1/en
Application granted granted Critical
Publication of EP1715287B1 publication Critical patent/EP1715287B1/en
Active 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
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/024—Shaped or hollow charges provided with embedded bodies of inert material
    • 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
    • F42B12/10—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 shaped or hollow charge

Definitions

  • the present invention relates to a warhead comprising a charge unit with an explosive charge, a liner, an initiator and a stopper provided in front of the charge unit to interfere with the liner of the charge unit, the providing of the stopper creating a splinter mode of operation of the warhead.
  • the invention also refers to a projectile or missile comprising such a warhead.
  • the charge unit may be constituted by a shaped charge or a charge unit explosively forming a projectile (EFP).
  • EFP projectile
  • a warhead according to the first paragraph based upon the shaped charge principle is previously known from DE 11 28 345 B , wherein a warhead according to the preamble of claim 1 is disclosed.
  • a charge jet is generated.
  • Such a jet is intended to generate small but deep holes in armour targets.
  • By introducing a stopper the penetration ability is decreased and there is a material accumulation with a certain velocity forwards. This results in a wider effect, wider hole, at the target surface.
  • no real splinter mode with fragments is obtained.
  • a fragmentation capacity is identified.
  • the warhead is provided with a splinter shell comprising heavy metal bullets.
  • an additional explosive charge adapted to the available space is inserted.
  • the fragmentation capacity is mainly due to the additional explosive charge and splinter shell inserted. Creating fragmentation capacity requires several additional rather complex and bulky components to be housed within the warhead.
  • the creation of the fragmentation capacity is obtained by using the liner of the comprised charge unit.
  • a stopper in front of the charge unit interfering with the liner a splinter mode is created spreading fragments.
  • the features essentially characterizing the warhead is that the charge unit is embodied to explosively form a projectile and that the stopper is located at such a distance from the charge unit that the essential part of the acceleration of the liner under influences from explosive gases of the explosive charge has taken place before reaching the stopper creating a splinter mode with fragments spread in desired directions of space.
  • Another way of creating fragmentation capacity and supposed to be known without any reference available is to use several initiation points within the explosive charge. This is considered an expensive and complicated method not expected to result in particular advantageous fragmentation.
  • a favourable embodiment of the invention is characterized in that the stopper is exchangeable for different stopper embodiments.
  • the warhead can be adapted for different requirements of fragmentation structures and spreading by change of stopper. By leaving out the stopper a complete standard charge unit effect is obtained.
  • Another way of adapting the warhead to different requirements is to provide the stopper in front of the charge unit such that it can be folded-away to give free way for a projectile.
  • the stopper For suitable dimensions of the stopper it is proposed by another preferred embodiment to provide the stopper at a distance in front of the charge unit that exceeds the length of the stopper.
  • the embodiment admits the liner to be adequately accelerated before it reaches the stopper resulting in an advantageous fragmentation.
  • Other preferred dimensioning of the warhead proposed are that the length of the stopper lies within 0.5 to 5 times the diameter of the warhead and preferably within 0.5 to 1 times the diameter and that the stopper is provided a distance in front of the liner of the charge unit that essentially corresponds to a travelling time of the liner within a time interval of 30 - 150 ⁇ s and preferably 50 - 60 ⁇ s.
  • the diameter of the stopper is less than half the diameter of the charge unit. Such a dimensioning has turned out to result in adequate fragmentation and spreading.
  • the stopper preferably has a rotational symmetrical shape. This i. a. makes it easier to obtain a balanced embodiment when introducing the stopper into a projectile or missile.
  • the stopper may assume many different shapes.
  • the stopper is shaped as a circular cylinder.
  • the stopper is shaped as a rotation symmetrical body having a first section with a first diameter and a second section with a second diameter different from the first diameter.
  • the stopper is shaped as a frustum of a cone.
  • the stopper is funnel shaped having its tip directed towards the charge unit.
  • the stopper is shaped essentially as a spherical body.
  • Advantageous materials to be used for the stopper are i. a. steel and heavy metals such as tungsten.
  • the warhead has a charge unit embodied to explosively form a projectile. Interferences between such charge units and stoppers to create fragmentation are easy to arrange for within the envelope of a projectile or missile and it has turned out that such a charge unit in cooperation with the stopper results in an effective fragmentation generation.
  • the projectile shown in figure 1 comprises a warhead 2 within its envelope 3 and is provided with fins 4.1, 4.2.
  • the warhead 2 includes a charge unit 5 and a stopper 6.
  • the charge unit 5 is built up of an explosive charge 7, a liner 8 and an initiator 9.
  • the stopper 6, see figure 4 is arranged in the centre of an annular element 10 having branches 11, 12, 13 connecting the periphery of the annular element with the stopper 6.
  • the envelope 3 of the projectile is embodied to receive and keep the annular element 10 in position by some kind of conventional locking means and thus not show.
  • Dashed lines 23, 24 and 25 in figure 4 indicate how the stopper 6 can be divided into sections in case that the stopper 6 is to be folded away to create free space for a projectile. In such a case the stopper could be rotated around schematically indicated hinge elements 26, 27 and 28 of any suitable known construction.
  • Figure 3a-3e shows five different embodiments of the stopper 6 that have been found advantageous with respect to the fragmentation procedure.
  • the stopper 6 consists of two circular cylinders 16, 17 having different diameters but a common symmetry axis 18. As indicated in figure 3a the circular cylinder having the shortest diameter is intended to be positioned closest to the charge unit 5. In figure 3b the circular cylinders have changed positions mutually.
  • the stopper 6 has the shape of a frustum of a cone 19 turned such that the bottom 20 of the cone is facing the liner 8.
  • the stopper 6 is funnel shaped having its tip 21 directed towards the charge unit.
  • Figure 3e shows an embodiment of the stopper having an essentially spherical shape 22.
  • the shape of the stopper can vary within wide limits and that the particular shape is dependent on i. a. the kind of fragmentation and directions of spreading wanted.
  • the simple shape of the circular cylinder of the stopper 6 of figure 1 it is realised that diameter and length can be varied.
  • the material used for the stopper such as steel and heavy metals, may be homogenous or non-homogenous in some way. It is also possible to mix different materials.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP05445022A 2005-04-19 2005-04-19 Warhead and projectile or missile comprising such a warhead Active EP1715287B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES05445022T ES2375713T3 (es) 2005-04-19 2005-04-19 Cabeza de combate y proyectil, o misil que comprende dicha cabeza de combate.
AT05445022T ATE538357T1 (de) 2005-04-19 2005-04-19 Gefechtskopf und einen solchen enthaltendes geschoss oder projektil
EP05445022A EP1715287B1 (en) 2005-04-19 2005-04-19 Warhead and projectile or missile comprising such a warhead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05445022A EP1715287B1 (en) 2005-04-19 2005-04-19 Warhead and projectile or missile comprising such a warhead

Publications (2)

Publication Number Publication Date
EP1715287A1 EP1715287A1 (en) 2006-10-25
EP1715287B1 true EP1715287B1 (en) 2011-12-21

Family

ID=34977033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05445022A Active EP1715287B1 (en) 2005-04-19 2005-04-19 Warhead and projectile or missile comprising such a warhead

Country Status (3)

Country Link
EP (1) EP1715287B1 (es)
AT (1) ATE538357T1 (es)
ES (1) ES2375713T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2531660C1 (ru) * 2013-09-10 2014-10-27 Открытое акционерное общество "Научно-производственное объединение "СПЛАВ" Боевая часть

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1128345B (de) 1960-03-05 1962-04-19 Boelkow Entwicklungen Kg Hohlsprengladung
FR1283683A (fr) * 1960-03-19 1962-02-02 Bolkow Entwicklungen Kg Charge creuse avec revêtement
DE3616249C1 (de) * 1986-05-14 1997-01-30 Daimler Benz Aerospace Ag Hohlladungsgeschoß
US5337673A (en) 1993-12-17 1994-08-16 The United States Of America As Represented By The Secretary Of The Navy Controlled fragmentation warhead case
US5753850A (en) * 1996-07-01 1998-05-19 Western Atlas International, Inc. Shaped charge for creating large perforations
SE519365C2 (sv) * 2000-07-03 2003-02-18 Bofors Defence Ab Arrangemang vid uppskjutbar ammunitionsenhet med modulärt uppbyggda stridsdelar

Also Published As

Publication number Publication date
ES2375713T8 (es) 2012-03-23
ES2375713T3 (es) 2012-03-05
ATE538357T1 (de) 2012-01-15
EP1715287A1 (en) 2006-10-25

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