WO2001092810A1 - Protection balistique - Google Patents

Protection balistique Download PDF

Info

Publication number
WO2001092810A1
WO2001092810A1 PCT/SE2001/000890 SE0100890W WO0192810A1 WO 2001092810 A1 WO2001092810 A1 WO 2001092810A1 SE 0100890 W SE0100890 W SE 0100890W WO 0192810 A1 WO0192810 A1 WO 0192810A1
Authority
WO
WIPO (PCT)
Prior art keywords
projectile
ballistic shield
shield
plate
thickness
Prior art date
Application number
PCT/SE2001/000890
Other languages
English (en)
Inventor
Björn Magnusson
Lars-Olov Wallerman
Original Assignee
Konstruktionskanalen I Karlsborg Hb
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 Konstruktionskanalen I Karlsborg Hb filed Critical Konstruktionskanalen I Karlsborg Hb
Priority to AU50732/01A priority Critical patent/AU5073201A/en
Publication of WO2001092810A1 publication Critical patent/WO2001092810A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
    • F41H5/0478—Fibre- or fabric-reinforced layers in combination with plastics layers

Definitions

  • the present invention relates to a ballistic shield for protection against projectiles fired from small arms
  • a shield of this kind is used as mobile shelters, mobile action information centres, etcetera, for military purposes, but also as bullet-proof containers, flexible protective partitions and bullet-proof fittings in banks and so on. It could likewise be used as protective flooring in e.g. transportation aeroplanes and as protection in certain types of vehicles.
  • the projectile In the thin shields, the projectile is decelerated very rapidly, involving considerable energy-dissipation over a brief period.
  • the shields must be able to be effective against the projectiles while the latter are at their most efficient, i.e. when they are moving at a high speed and with their point directed at the shield.
  • One consequence thus is that shields against hard-core projectiles need to be thicker and of high-strength type.
  • the thick shields operate by causing slower deceleration, and the deceleration effect mainly depends on the mass of the projectile. Depending on the density and the properties of the shield as well as on the structure of the projectile, the latter will be decelerated in different ways.
  • Semi-jacketed ammunition dissipates its kinetic energy by mushrooming of the projectile point, i.e. the projectile immediately becomes considerably wider. The deceleration of the projectile thereafter is rapid, which is the very purpose of the structure .
  • Fully-jacketed ammunition (military ammunition and sport-shooting ammunition) tips after having traversed a predetermined distance once the projectile has become unstable. This is an established phenomenon known from so called civilization research on ammunition, .as will be explained further on in the description.
  • the main object of the present invention is to provide a ballistic shield that is a combination of a retarding shield and a shield that is effective on account of its high strength and high degree of break elongation.
  • This shield thus combines the properties of both kinds of shields, thereby producing substantial synergy effects while exploiting the aspects of strength of the two shields and eliminating their weaknesses.
  • Another object of the invention is to provide a ballistic shield, which owing to its comparatively small mass is easy to move and which is inexpensive and simple to manufacture .
  • Yet another object of the invention is to provide a ballistic shield, which is shock-proof and sturdy and which is able to withstand the effects of non-jacketed, semi-jacketed and fully-jacketed projectiles from small arms as also those of tracer bullets and automatic fire.
  • An additional object .of the invention is to provide a ballistic shield, which is comparatively environmentally friendly, which at least partly may consist of recycled materials, and which in itself is recyclable.
  • the ballistic shield as a wall structure having at least one outer element allowing passage-through of the projectile without being deformed and/or decelerated to any substantial degree, at least one intermediate element, which is arranged to force the projectile to tip and to cause it to decelerate heavily, and at least one inner element, which is struck by and ultimately arrests the projectile.
  • the outer element preferably is configured as a thin and essentially flat plate of a comparatively soft material, allowing essentially unobstructed passage- through of the projectile while the intermediate element preferably is formed by a layer of a decelerating material designed to cause the projectile to tip and be heavily decelerated or slowed down, while the inner element preferably is configured as a comparatively thin plate of a material absorbing the remaining kinetic energy of the projectile.
  • the basic principle of the invention thus is to produce deceleration in a projectile-decelerating shield by means of the above-described combination of shields, such that the projectile is caused to tip or tumble, and ultimate arrest of the projectile in a thin shield.
  • the fact that the projectile tips or turns over means that t ' he latter shield stops the projectile, when said projectile is ineffective from a penetration point of view. Consequently, the thin shield is not exposed to stress of the same magnitude as would have been the case, had it been used on its own, and for this reason it could be made thinner and be manufactured from cheap materials.
  • the decelerating material may be chosen from materials that are as lightweight and as durable as possible but yet ' possess the desired properties.
  • Fig 1 is a perspective view of a ballistic shield in accordance with the invention in the form of a mobile shelter as seen obliquely from the front,
  • Fig 2 is a longitudinal sectional view showing a part of the shelter of Fig 1
  • Fig 3 is a schematic sequence of pictures numbered
  • the primary function of the ballistic shield in ' accordance with the invention as shown in Figs 1 and 2 and generally designated by numeral 1 is to serve as perfectly satisfactory protection against small-calibre projectiles 2 of various types used in small arms, not
  • the shield is configured as a protective upright shelter for protection of soldiers, not shown.
  • the shield 1 could be designed in a variety of different ways as regards shapes and sizes without departure from the fundamental structure of the shield against projectiles 2.
  • the ballistic shield 1 is designed as a wall structure the principal parts of which are an outer element 3, an intermediate element 4 and an inner element 5.
  • the outer element 3 allows passage-through of the projectile 2 without being deformed or decelerated to any significant degree, and in the shown embodiment the element is configured as a thin and essentially flat plate 6 of a comparatively soft material allowing the essentially unobstructed passage-through of the projectile 2.
  • the plate 6 could be manufactured from practically any material that is adequate for the intended purpose, but preferably it is manufactured from e.g. thin plating (of for instance aluminium), wood (such as plywood) , or most preferably from plastics or the like. Practical tests have shown that a plate 6 of glass- fibre-reinforced ester plastics having a thickness of approximately 2-5 mm, most preferably about 3 mm, meet the requirements on such plates.
  • the purpose of the intermediate element 4 is to cause the projectile 2, after the latter having pierced the outer element 3, to tip or turn over and to be decelerated or slowed down considerably, and it consists of a layer 7 of a decelerating material .
  • This material comprises a granulate of a suitable, resilient material, such as polymer, rubber, silicone rubber and so on.
  • the rubber may be a waste/recycle product recovered from e.g. vehicle tyres.
  • the granulate has a particle size of about 2-5- mm. However, the particle size may vary, depending on the
  • the thickness of the layer 7 •type of the granulate material, the thickness of the layer 7 and the type of projectile 2, but practical tests have shown that the particle size should be somewhere in the range of 1-6 mm.
  • the same principle of reasoning is applicable to the thickness of the layer 7; in the shown embodiment the layer thickness amounts to 80-200 mm but it could vary between about 50 and 300 mm.
  • the following may be said with respect to the behaviour of the projectile 2 as it passes through the layer of the intermediate element 4, with reference to the sequence of pictures shown in Fig 3, and also to Fig 2.
  • the projectile 2 strikes the granulate layer 7, which is a medium that is denser than the surrounding atmospheric air, the conditions of forces around the projectile are changed considerably.
  • the groove 12 that forms behind the projectile 2 as the latter passes through the layer 7 of granulate is rapidly filled up by the surrounding granulate.
  • the granulate layer thus rapidly becomes “intact” again and ready to cause a fresh projectile or several fresh projectiles to tip and be decelerated, ' even if these projectiles follow the same or essentially the same path as the preceding one/ones .
  • the inner element 5 forming another one of the main components of the ballistic shield 1 in accordance with t'he invention preferably is configured as a comparatively thin plate 8, see Fig 2 , of a material that absorbs the remaining kinetic energy of the projectile and ultimately stops the latter.
  • the plate 8 preferably is made from reinforced plastics, and tests show that an ester plastic that is reinforced with glass fibre and/or aramide fibres of para type (Kevlar®) are well suited for the purpose.
  • the thickness of the plate 8 preferably is in the range of -'about 15-25 mm but for the same reasons as mentioned previously it may vary between about 10 and about 30 mm.
  • the plate 8 In order to increase the kinetic-energy absorbing and arresting properties of the plate 8 it may be suitable when manufacturing the plate of glass-fibre and/or aramide-fibre reinforced plastics to make sure that the plastic material is not completely saturated through with the binding agent . This prevents the fibres from becoming completely embedded in the plastic material but instead retain some movability, with consequential increase of the ability of the fibres to absorb the remaining kinetic energy of the projectile 2.
  • An additional or supplementary way of increasing the ability of the plate to absorb the remaining kinetic energy of the projectile and to arrest the latter is to manufacture the plate 8 forming the inner element 5 as a laminate comprising at least two panels 9 and 10, see Fig 2. Sandwiched between the two panels 9, 10 there is an intermediate layer 11 consisting of a suitable resilient and adhesive material .
  • a layer of silicone rubber having a thickness of about 1-5 mm has proved to meet the necessary requirements.
  • the panels 9, 10 should have a thickness in the range of between 5 and 10 mm.
  • the invention should not be regarded as limited ' to the embodiment as shown and described herein but could be modified in a variety of ways within the scope of protection defined in the appended claims.
  • the thickness and other dimensions of the elements 3, 4 and 5 forming part of the ballistic shield 1 as also the choice of material therefor could be varied according to need and demand, and the number of plates 6, 8 and layers 7 of each element could likewise be varied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

L'invention concerne un écran balistique permettant la protection contre les projectiles (2) tirés de petites armes à feu. Cet écran est conçu sous forme de structure paroi comprenant un élément externe (3) qui laisse passer le projectile (2) sans déformation et/ou ni décélération significative, un élément intermédiaire (4) qui force le projectile (2) à se renverser et à décélérer vivement, et un élément interne (5) qui est touché et arrête finalement le projectile. L'élément externe (3) est conçu sous la forme d'une mince plaque (6) de matériau souple qui permet le passage du projectile (2) tandis que l'élément intermédiaire (4) est constitué d'une couche (7) de matériau décélérateur conçu pour renverser le projectile et provoquer sa vive décélération, et enfin l'élément interne (5) est réalisé sous forme de mince plaque (8) d'un matériau absorbant l'énergie cinétique résiduelle du projectile.
PCT/SE2001/000890 2000-05-29 2001-04-26 Protection balistique WO2001092810A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU50732/01A AU5073201A (en) 2000-05-29 2001-04-26 Ballistic protection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0002005A SE0002005A0 (sv) 2000-05-29 2000-05-29 Ballistiskt skydd
SE0002005-7 2000-05-29

Publications (1)

Publication Number Publication Date
WO2001092810A1 true WO2001092810A1 (fr) 2001-12-06

Family

ID=20279884

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/000890 WO2001092810A1 (fr) 2000-05-29 2001-04-26 Protection balistique

Country Status (3)

Country Link
AU (1) AU5073201A (fr)
SE (1) SE0002005A0 (fr)
WO (1) WO2001092810A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1828706A1 (fr) * 2004-12-20 2007-09-05 Protaurius Aktiebolag Protection balistique legere utilisee comme element de construction
WO2011159381A2 (fr) * 2010-03-25 2011-12-22 Action Target Inc. Lambrissage balistique pour pièges à balles
KR101218300B1 (ko) 2007-01-03 2013-01-09 삼성테크윈 주식회사 방탄키트
US9040160B2 (en) 2011-04-08 2015-05-26 Schott Corporation Multilayer armor
GB2534197A (en) * 2015-01-16 2016-07-20 George Down Kevin Protective wall
EP3907055A1 (fr) * 2020-05-07 2021-11-10 SP Advanced Engineering Materials PVT. Ltd. Produit composite rentable et respectueux de l'environnement ayant une résistance robuste aux chocs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3431818A (en) * 1965-04-26 1969-03-11 Aerojet General Co Lightweight protective armor plate
FR2649743A1 (fr) * 1989-07-12 1991-01-18 Campenon Bernard Paroi de protection a l'egard des projectiles explosifs conventionnels
US5723807A (en) * 1985-06-20 1998-03-03 Fmc Corporation Expanded metal armor
US5866839A (en) * 1994-03-21 1999-02-02 Ohayon; Shalom High performance armor protection system for tank crews and fighting vehicles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3431818A (en) * 1965-04-26 1969-03-11 Aerojet General Co Lightweight protective armor plate
US5723807A (en) * 1985-06-20 1998-03-03 Fmc Corporation Expanded metal armor
FR2649743A1 (fr) * 1989-07-12 1991-01-18 Campenon Bernard Paroi de protection a l'egard des projectiles explosifs conventionnels
US5866839A (en) * 1994-03-21 1999-02-02 Ohayon; Shalom High performance armor protection system for tank crews and fighting vehicles

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1828706A1 (fr) * 2004-12-20 2007-09-05 Protaurius Aktiebolag Protection balistique legere utilisee comme element de construction
US7827897B2 (en) 2004-12-20 2010-11-09 Protaurius Aktiebolag Light ballistic protection as building elements
EP1828706A4 (fr) * 2004-12-20 2011-07-06 Protaurius Ab Protection balistique legere utilisee comme element de construction
KR101218300B1 (ko) 2007-01-03 2013-01-09 삼성테크윈 주식회사 방탄키트
WO2011159381A2 (fr) * 2010-03-25 2011-12-22 Action Target Inc. Lambrissage balistique pour pièges à balles
WO2011159381A3 (fr) * 2010-03-25 2012-04-05 Action Target Inc. Lambrissage balistique pour pièges à balles
US9040160B2 (en) 2011-04-08 2015-05-26 Schott Corporation Multilayer armor
US10030941B2 (en) 2011-04-08 2018-07-24 Oran Safety Glass Inc. Multilayer armor
DE112012001630B4 (de) * 2011-04-08 2021-01-28 Oran Safety Glass, Inc. Mehrschichtpanzerung
GB2534197A (en) * 2015-01-16 2016-07-20 George Down Kevin Protective wall
GB2534197B (en) * 2015-01-16 2018-07-04 George Down Kevin Protective wall
EP3907055A1 (fr) * 2020-05-07 2021-11-10 SP Advanced Engineering Materials PVT. Ltd. Produit composite rentable et respectueux de l'environnement ayant une résistance robuste aux chocs

Also Published As

Publication number Publication date
SE0002005L (sv) 2001-11-30
AU5073201A (en) 2001-12-11
SE0002005A0 (sv) 2001-11-30
SE0002005D0 (sv) 2000-05-29

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