WO2011128608A1 - Blindage réactif par explosion à faibles dommages collatéraux - Google Patents

Blindage réactif par explosion à faibles dommages collatéraux Download PDF

Info

Publication number
WO2011128608A1
WO2011128608A1 PCT/GB2011/000120 GB2011000120W WO2011128608A1 WO 2011128608 A1 WO2011128608 A1 WO 2011128608A1 GB 2011000120 W GB2011000120 W GB 2011000120W WO 2011128608 A1 WO2011128608 A1 WO 2011128608A1
Authority
WO
WIPO (PCT)
Prior art keywords
era
ceramic
plate
glass material
stack
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.)
Ceased
Application number
PCT/GB2011/000120
Other languages
English (en)
Inventor
Paul Jonathan Hazell
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Publication of WO2011128608A1 publication Critical patent/WO2011128608A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F41H5/007—Reactive armour; Dynamic armour
    • 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
    • F41H5/0414—Layered armour containing ceramic material

Definitions

  • the present invention relates to the field of explosive reactive armour (ERA), which is a known type of armour used to protect objects from projectiles which include armour penetrating weapons such as a kinetic energy projectile, hollow charge, shaped charge, high velocity slug, shaped charge jet or shaped charge slug.
  • ERA explosive reactive armour
  • ERA typically comprises a stack of 3 plate elements: a backing or inner plate; an explosive or fast exothermic reacting intermediate plate; and an outer plate.
  • Other plates may be present in the stack in various embodiments of ERA, fulfilling various other purposes such as scratch proofing, waterproofing or providing a textured surface for reasons of camouflage or radar
  • the inner plate faces towards, or is attached to, an object to which the ERA is applied, usually with a gap between the inner plate and the object.
  • This gap may be an air gap, or may be or may include an additional plate of some material which acts to protect the armoured object from the action of the explosive plate and the movement of the inner plate when the ERA is activated.
  • the intermediate plate is designed to react when the ERA is contacted by a projectile of any type described above.
  • the inner and outer plates are accelerated in separation, in opposite directions, usually normal to their surface.
  • the translation of the plates actively interacts with the motion of the projectile, by crossing the trajectory thereof and hitting the projectile. The projectile is thus disrupted, leading to a reduction of the subsequent penetration capability of that projectile.
  • the problem with existing systems of ERA is that upon activation, there is a high potential for collateral damage.
  • the armoured object might be a main battle tank which is part of a larger military unit containing infantrymen; the resultant trajectory of outer plates, or fragments thereof, produced by activated ERA can prove potentially lethal to dismounted troops at significant distances; similarly, in such a scenario, helicopters providing air cover can also be damaged or disabled by flying outer plates or fragments thereof produced by activated ERA.
  • COHERA Controlled Harm Explosive Reactive Armour
  • a fragmentation plate layer as the outer plate, which is designed to shatter into fragments of a pre-determined and controlled size and shape, designed to
  • the fragmentation layer is composed of tough materials that can be made so as to fragment in a predictable and controllable fashion, usually along deliberately created fault lines in the structure of the fragmentation layer. Such fault lines are created by scoring , shaping, forming, moulding or other production process means. i s Materials used for the fragmentation layer include steel and GRP.
  • fragmentation layer that still gives the potential for reduced collateral damage compared to standard steel outer plates, yet performs comparably or even0 favourably to existing ERA systems.
  • an Explosive Reactive Armour comprising a stack of plate elements including a backing or inner plate, a fast exothermic reaction intermediate plate, and an outer plate, characterised in that at least5 one plate in the stack of plate elements comprises a glass or ceramic material that will tend to shatter in a chaotic fashion into uncontrolled but relatively small fragments when the ERA activates, such fragments posing a relatively small risk of collateral damage whilst disrupting an incoming projectile.
  • a Glass or ceramic material that will tend to shatter in a chaotic fashion into uncontrolled but relatively small fragments when the ERA activates, such fragments posing a relatively small risk of collateral damage whilst disrupting an incoming projectile.
  • a further advantage of the use of a brittle ceramic or glass material in this manner is that particular manufacturing processes typically used in the prior art to create fragmentation plates with controlled fragmentation properties (moulding, scoring, or other means of creating fault lines in the fragmentation layer) are not required - simple flat plates that are easy to manufacture can be used. This results in a potential cost advantage over most forms of prior art ERA, particularly prior art ERA of the 'controlled fragmentation' type, which use manufacturing methods to control the fragmentation of generally tougher materials, usually either metal or metal composites.
  • Materials that have been tested and found to give similar or improved performance as against standard low-carbon steel plates of mass equivalence include an alumina (Sintox FA), a borosilicate glass (Borofloat [TM]), and silicon carbides (EKasic T and PS 5000).
  • Cemented Carbide materials or 'cermets', such as tungsten carbide, or reaction-bonded ceramics such as reaction bonded silicon carbides are similar hard and brittle composite structure materials which fragment in the same fashion and can be expected to give similar results.

Landscapes

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

Abstract

L'invention concerne un ERA comprenant des plaques en céramique ou en verre pour réduire la possibilité de dommages collatéraux.
PCT/GB2011/000120 2010-01-29 2011-01-31 Blindage réactif par explosion à faibles dommages collatéraux Ceased WO2011128608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1001474A GB2477315A (en) 2010-01-29 2010-01-29 Explosive reactive armour
GB1001474.4 2010-01-29

Publications (1)

Publication Number Publication Date
WO2011128608A1 true WO2011128608A1 (fr) 2011-10-20

Family

ID=42084175

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/000120 Ceased WO2011128608A1 (fr) 2010-01-29 2011-01-31 Blindage réactif par explosion à faibles dommages collatéraux

Country Status (2)

Country Link
GB (2) GB2477315A (fr)
WO (1) WO2011128608A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR2022005722A2 (tr) * 2022-04-11 2023-10-23 Roketsan Roket Sanayi Ve Ticaret Anonim Sirketi Çanta formunda i̇ki̇nci̇l etki̇leri̇ azaltilmiş modüler patlayici tepki̇meli̇ zirh

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4981067A (en) * 1989-09-18 1991-01-01 The United States Of America As Represented By The Secretary Of The Army Reactived armor improvement
FR2734896A1 (fr) * 1988-04-09 1996-12-06 Diehl Gmbh & Co Dispositif de protection contre les projectiles
FR2803379A1 (fr) * 1989-12-28 2001-07-06 France Etat Blindage composite contre les projectiles de charges creuses et renfermant une couche en materiau fragile
WO2003103968A2 (fr) * 2002-06-11 2003-12-18 Rafael Armament Development Authority Ltd. Blindage reactif permettant de controler les dommages (cohera)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734896A1 (fr) * 1988-04-09 1996-12-06 Diehl Gmbh & Co Dispositif de protection contre les projectiles
US4981067A (en) * 1989-09-18 1991-01-01 The United States Of America As Represented By The Secretary Of The Army Reactived armor improvement
FR2803379A1 (fr) * 1989-12-28 2001-07-06 France Etat Blindage composite contre les projectiles de charges creuses et renfermant une couche en materiau fragile
WO2003103968A2 (fr) * 2002-06-11 2003-12-18 Rafael Armament Development Authority Ltd. Blindage reactif permettant de controler les dommages (cohera)

Also Published As

Publication number Publication date
GB2477425A (en) 2011-08-03
GB201001474D0 (en) 2010-03-17
GB2477315A (en) 2011-08-03
GB201101542D0 (en) 2011-03-16

Similar Documents

Publication Publication Date Title
Yadav et al. Body armour materials: from steel to contemporary biomimetic systems
Madhu et al. Armour protection and affordable protection for futuristic combat vehicles
US9140522B1 (en) Compositionally graded transparent ceramic armor
AU2022203168B2 (en) Reactive armor
US10837740B2 (en) Reactive armor
US20120186430A1 (en) Reshaping Projectiles to Improve Armor Protection
US8336439B2 (en) Layering non-metallic layers between metallic layers to improve armor protection
US20110162516A1 (en) Method of Layering Composite Sheets to Improve Armor Capabilities
US20120186432A1 (en) Layering of Air Gaps To Improve Armor Protection
WO2011128608A1 (fr) Blindage réactif par explosion à faibles dommages collatéraux
US10989501B2 (en) Reactive armour
KR20170081870A (ko) 경량 장갑재
US20120186431A1 (en) Armor System Comprising Dilatant Material To Improve Armor Protection
EP3137842B1 (fr) Système et procédé pour neutraliser des menaces à charge creuse
CZ270594A3 (en) Device for protection of a wall from projectiles
CA3005020A1 (fr) Blindage reactif
JP6025525B2 (ja) 弾頭
AU2019206125B2 (en) Reactive protection element
CA3048798C (fr) Blindage reactif
JP6179575B2 (ja) 弾頭
US20120222544A1 (en) Protection device against projectile-forming charges
UA142578U (uk) Антиуламкове захисне покриття керамополімерної композитної броні
CN104154821A (zh) 一种主动式陶瓷抗弹柱
Kumari Effectual analysis of ceramics engineering in military and defense applications
Daliri et al. Integrated hybrid ceramic/S2-glass fibre reinforced composite armour

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11749871

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11749871

Country of ref document: EP

Kind code of ref document: A1