EP2776780B1 - Composite passive armor protection - Google Patents

Composite passive armor protection Download PDF

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Publication number
EP2776780B1
EP2776780B1 EP12798895.4A EP12798895A EP2776780B1 EP 2776780 B1 EP2776780 B1 EP 2776780B1 EP 12798895 A EP12798895 A EP 12798895A EP 2776780 B1 EP2776780 B1 EP 2776780B1
Authority
EP
European Patent Office
Prior art keywords
solids
armor protection
passive armor
composite passive
geometric solids
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
EP12798895.4A
Other languages
German (de)
French (fr)
Other versions
EP2776780A1 (en
Inventor
Jerzy Sobczak
Pawel Darlak
Piotr Dlugosz
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.)
Instytut Odlewnictwa
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Instytut Odlewnictwa
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Publication of EP2776780A1 publication Critical patent/EP2776780A1/en
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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
    • F41H5/0414—Layered armour containing ceramic material
    • F41H5/0421—Ceramic layers in combination with metal layers
    • 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
    • F41H5/0492—Layered armour containing hard elements, e.g. plates, spheres, rods, separated from each other, the elements being connected to a further flexible layer or being embedded in a plastics or an elastomer matrix

Definitions

  • the invention relates to a composite passive armor protection to safeguard objects from the effect of projectiles and projectile fragments.
  • the energy-absorbing elements are embedded in a non-metallic matrix. Elements, having the shape of cylindrical bodies, are arranged in layers and placed next to each other or at certain distances.
  • the protective screen to defend against explosion as disclosed in PL171251 is made of air-permeable side layers, having the form of precut sheets of metal foil, and of a porous core, placed between these foils, containing the beads or ellipsoids made of the same material as the sheet.
  • the sheets of metal foil contain magnesium alloy.
  • a passive armor known from the PL181177 description consists of the main inner protective metal layer and the outer protective layer comprising a number of rectangular, metallic cassettes containing ceramic layers.
  • a safety element used to protect the life and health of the crew of a military vehicle against the explosion of mine under this vehicle known from the PL206571 description consists of a shield having through-holes on its entire surface.
  • the shield is connected by means of the vertical supports with a thin intermediate plate, which, through springs and connected to these springs mounting plates, is attached to the underside of the vehicle floor. Discharge ducts are running from the shield surface.
  • US patent specification No US 4 945814 which forms the starting point for the preamble of claim 1, discloses a moulded composite armour provided with ceramic inserts.
  • the ceramic inserts are closed within shells having positioning protuberances.
  • the shells are disposed and positioned by means of the protuberances in regular manner in the mould in a predetermined network to ensure the ballistic efficiency, and leave gaps between them for the liquid metal. Then liquid metal is poured into the mould to fill the gaps and embed the inserts. After solidification of the metal, the ceramic inserts are anchored in the composite armour protection.
  • a composite passive armor protection according to the present invention comprises the features of claim 1.
  • the geometric solids have the shape of spheres, or of truncated pyramids with a square base.
  • the geometric solids are ceramic solids or metallic solids.
  • the rods are preferably made of high-strength stainless steel.
  • the composite passive armor protection according to the present invention is resistant to projectile impacts.
  • the protruding part of geometric solids prevents the penetration of AP-type projectiles, projectile fragments, and small arms projectiles.
  • the mere shape and very hard material of the geometric solids cause distortion in the projectile flight path, or ricochet and weakening of the projectile kinetic energy. Brackets and rods passing through these brackets reinforce the plate and act as a shock absorbing cushion for the geometric solids.
  • the projectile striking against the exposed portion of the geometric solid pushes said geometric solid inside the matrix along the axis of the brackets in such a way that it causes both parting of the precut bracket walls to the outside, and a movement of the brackets to the inside of the matrix.
  • the parting of the walls acts as a shock absorbing cushion for the geometric solid, while bracket movement to the inside of the matrix is controlled by the structure made of rods and a plate.
  • the matrix made of a light alloy protects the armor against tearing.
  • the composite passive armor protection according to the present invention, the matrix whereof is made of a light alloy is highly effective in protection against the AP projectiles of up to 12.6 mm.
  • the use of light alloy as a matrix material reduces the armor weight, thereby increasing the mobility of the protected vehicles, reducing fuel consumption and enabling the armor to be used as a means of protection for the aircraft and watercraft.
  • the composite passive armor protection is made by casting methods.
  • the structure composed of geometric solids resting on brackets passing through the holes in the plate and brackets with rods fixed in the precuts in the walls is placed in a specially designed foundry mould and poured with a liquid light metal alloy.
  • the alloy solidification is carried out under the conditions of elevated pressure.
  • the armor is subjected to machining to the required dimensions.
  • the composite passive armor protection comprises a structure, embedded in the light alloy matrix 1, wherein said structure is made of ceramic truncated tetrahedrons 2, resting on brackets 3, passing through the holes in plate 4, wherein said brackets 3 have precuts in the walls located at a height above and below the plate 4, wherein in said through holes are secured rods 5 in such a way that they form a rectangular grid.
  • the ceramic truncated tetrahedrons 2 are embedded in the light alloy matrix 1 to a level above their total height.
  • the rods 5 made of high-strength stainless steel are fixed co-axially with the ceramic truncated tetrahedrons 2.

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  • 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)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)

Description

  • The invention relates to a composite passive armor protection to safeguard objects from the effect of projectiles and projectile fragments.
  • As known from the DE1578324 description of armor, the energy-absorbing elements are embedded in a non-metallic matrix. Elements, having the shape of cylindrical bodies, are arranged in layers and placed next to each other or at certain distances. On the other hand, the protective screen to defend against explosion as disclosed in PL171251 is made of air-permeable side layers, having the form of precut sheets of metal foil, and of a porous core, placed between these foils, containing the beads or ellipsoids made of the same material as the sheet. Preferably, the sheets of metal foil contain magnesium alloy. A passive armor known from the PL181177 description consists of the main inner protective metal layer and the outer protective layer comprising a number of rectangular, metallic cassettes containing ceramic layers. The spaces between the ceramic layers and the surfaces of the cassette walls are filled with a composition of small ceramic pieces mixed with glue and concrete. The cassettes in an outer protective layer of the armor are removably secured to the main inner protective metal layer by means of various connecting and clamping elements. A safety element used to protect the life and health of the crew of a military vehicle against the explosion of mine under this vehicle known from the PL206571 description consists of a shield having through-holes on its entire surface. The shield is connected by means of the vertical supports with a thin intermediate plate, which, through springs and connected to these springs mounting plates, is attached to the underside of the vehicle floor. Discharge ducts are running from the shield surface. US patent specification No US 4 945814 , which forms the starting point for the preamble of claim 1, discloses a moulded composite armour provided with ceramic inserts. The ceramic inserts are closed within shells having positioning protuberances. The shells are disposed and positioned by means of the protuberances in regular manner in the mould in a predetermined network to ensure the ballistic efficiency, and leave gaps between them for the liquid metal. Then liquid metal is poured into the mould to fill the gaps and embed the inserts. After solidification of the metal, the ceramic inserts are anchored in the composite armour protection.
  • A composite passive armor protection according to the present invention comprises the features of claim 1.
  • Advantageously, the geometric solids have the shape of spheres, or of truncated pyramids with a square base. The geometric solids are ceramic solids or metallic solids. The rods are preferably made of high-strength stainless steel. Owing to its specific construction, the composite passive armor protection according to the present invention is resistant to projectile impacts. The protruding part of geometric solids prevents the penetration of AP-type projectiles, projectile fragments, and small arms projectiles. The mere shape and very hard material of the geometric solids cause distortion in the projectile flight path, or ricochet and weakening of the projectile kinetic energy. Brackets and rods passing through these brackets reinforce the plate and act as a shock absorbing cushion for the geometric solids. The projectile striking against the exposed portion of the geometric solid pushes said geometric solid inside the matrix along the axis of the brackets in such a way that it causes both parting of the precut bracket walls to the outside, and a movement of the brackets to the inside of the matrix. The parting of the walls acts as a shock absorbing cushion for the geometric solid, while bracket movement to the inside of the matrix is controlled by the structure made of rods and a plate. The matrix made of a light alloy protects the armor against tearing. The composite passive armor protection according to the present invention, the matrix whereof is made of a light alloy, is highly effective in protection against the AP projectiles of up to 12.6 mm. The use of light alloy as a matrix material reduces the armor weight, thereby increasing the mobility of the protected vehicles, reducing fuel consumption and enabling the armor to be used as a means of protection for the aircraft and watercraft.
  • The composite passive armor protection is made by casting methods. The structure composed of geometric solids resting on brackets passing through the holes in the plate and brackets with rods fixed in the precuts in the walls is placed in a specially designed foundry mould and poured with a liquid light metal alloy. The alloy solidification is carried out under the conditions of elevated pressure. As a last step, the armor is subjected to machining to the required dimensions.
  • The composite passive armor protection according to the present invention is shown in a sample embodiment in the accompanying drawings, where Figure 1 shows a vertical section of the composite passive armor protection, and Figure 2 its schematic representation.
  • The composite passive armor protection comprises a structure, embedded in the light alloy matrix 1, wherein said structure is made of ceramic truncated tetrahedrons 2, resting on brackets 3, passing through the holes in plate 4, wherein said brackets 3 have precuts in the walls located at a height above and below the plate 4, wherein in said through holes are secured rods 5 in such a way that they form a rectangular grid. The ceramic truncated tetrahedrons 2 are embedded in the light alloy matrix 1 to a level above their total height. The rods 5 made of high-strength stainless steel are fixed co-axially with the ceramic truncated tetrahedrons 2.

Claims (5)

  1. A composite passive armor protection having a structure comprising geometric solids, said structure being embedded in a light alloy matrix (1), wherein said geometric solids (2) are embedded in the light alloy matrix (1) to a level above one half of their total height, characterized in that said structure is made of the geometric solids (2), resting on brackets (3), passing through holes in a plate (4),
    wherein said brackets (3) have precuts in the walls located at a height above and below the plate (4), wherein in said precuts are secured rods (5) in such a way that they form a grid, and wherein the rods (5) are fixed in such a way that their longitudinal axes coincide with the axes of the geometric solids (2).
  2. The composite passive armor protection of claim 1, wherein said geometric solids (2) are ceramic solids.
  3. The composite passive armor protection of claim 1, wherein said geometric solids (2) are metallic solids.
  4. The composite passive armor protection of claim 1, wherein said geometric solids (2) are in the shape of spheres or truncated pyramids with a square base.
  5. The composite passive armor protection of claim 1, wherein said rods (5) are made of high-strength stainless steel.
EP12798895.4A 2011-11-07 2012-10-25 Composite passive armor protection Active EP2776780B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL396894A PL222727B1 (en) 2011-11-07 2011-11-07 Passive composite protective armor
PCT/PL2012/000115 WO2013070098A1 (en) 2011-11-07 2012-10-25 Composite passive armor protection

Publications (2)

Publication Number Publication Date
EP2776780A1 EP2776780A1 (en) 2014-09-17
EP2776780B1 true EP2776780B1 (en) 2016-04-06

Family

ID=47326293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12798895.4A Active EP2776780B1 (en) 2011-11-07 2012-10-25 Composite passive armor protection

Country Status (6)

Country Link
US (1) US20140345446A1 (en)
EP (1) EP2776780B1 (en)
IL (1) IL232348A (en)
PL (1) PL222727B1 (en)
WO (1) WO2013070098A1 (en)
ZA (1) ZA201402982B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2202478A1 (en) * 2008-12-29 2010-06-30 Ruag Land Systems Protection of objects from hollow charges and manufacturing method therefor

Family Cites Families (18)

* 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
FR2419498A1 (en) * 1978-03-08 1979-10-05 Merlin Gerin CAST COMPOSITE SHIELD
PL129419B1 (en) 1978-05-04 1984-05-31 Zaklady Maszyn I Urzadzen T Un Control system
DE69230471T2 (en) 1991-10-25 2000-07-06 Firexx Corp EXPLOSION PROTECTION CUSHION AND THEIR USE METHOD
PL181177B1 (en) 1996-09-10 2001-06-29 Wojskowy Inst Techniczny Uzbro Passive armour
US6200664B1 (en) * 1999-11-01 2001-03-13 Ward Figge Explosion barrier
US7543523B2 (en) * 2001-10-01 2009-06-09 Lockheed Martin Corporation Antiballistic armor
US7562613B2 (en) * 2003-12-19 2009-07-21 The Cooper Union For The Advancement Of Science And Art Protective structure and protective system
US20060059841A1 (en) * 2004-08-18 2006-03-23 Dayton Superior Corporation Of 7777 Washington Village Drive Reinforced concrete structure, rebar end anchor therefor and method of manufacturing
US8220378B2 (en) * 2005-06-21 2012-07-17 Specialty Products, Inc. Composite armor panel and method of manufacturing same
US20120312150A1 (en) * 2005-06-21 2012-12-13 United States Govemment, as represented by the Secretary of the Navy Body armor of ceramic ball embedded polymer
US20090031889A1 (en) * 2007-05-18 2009-02-05 Saul W Venner Complex Geometry Composite Armor for Military Applications
US20110107904A1 (en) * 2007-08-15 2011-05-12 University Of Virginia Patent Foundation Synergistically-Layered Armor Systems and Methods for Producing Layers Thereof
CA2651631A1 (en) * 2008-02-01 2009-08-01 Kenneth C. Tatarliov Bullet resistant panel member
US7833627B1 (en) * 2008-03-27 2010-11-16 The United States Of America As Represented By The Secretary Of The Navy Composite armor having a layered metallic matrix and dually embedded ceramic elements
US8839580B2 (en) * 2011-05-11 2014-09-23 Composite Technologies Corporation Load transfer device
US9395159B2 (en) * 2012-03-01 2016-07-19 Lawrence Livermore National Security, Llc Embedded-monolith armor
US8960262B2 (en) * 2012-04-27 2015-02-24 Spokane Industries Encapsulated arrays with barrier layer covered tiles

Also Published As

Publication number Publication date
PL222727B1 (en) 2016-08-31
US20140345446A1 (en) 2014-11-27
WO2013070098A1 (en) 2013-05-16
EP2776780A1 (en) 2014-09-17
ZA201402982B (en) 2015-09-30
PL396894A1 (en) 2013-05-13
IL232348A0 (en) 2014-06-30
IL232348A (en) 2017-06-29

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