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WO2006085924A2 - Blindage actif comprenant une couche metallique pour la production d'un champ magnetique ou electrique - Google Patents

Blindage actif comprenant une couche metallique pour la production d'un champ magnetique ou electrique Download PDF

Info

Publication number
WO2006085924A2
WO2006085924A2 PCT/US2005/020571 US2005020571W WO2006085924A2 WO 2006085924 A2 WO2006085924 A2 WO 2006085924A2 US 2005020571 W US2005020571 W US 2005020571W WO 2006085924 A2 WO2006085924 A2 WO 2006085924A2
Authority
WO
WIPO (PCT)
Prior art keywords
layer
armor
active
comprised
medial
Prior art date
Application number
PCT/US2005/020571
Other languages
English (en)
Other versions
WO2006085924A3 (fr
Inventor
Paul A. Zank
Original Assignee
Bae Systems Information And Electronic Systems Integration Inc.
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
Priority claimed from US10/871,146 external-priority patent/US7104178B1/en
Application filed by Bae Systems Information And Electronic Systems Integration Inc. filed Critical Bae Systems Information And Electronic Systems Integration Inc.
Priority to US11/156,770 priority Critical patent/US7424845B2/en
Publication of WO2006085924A2 publication Critical patent/WO2006085924A2/fr
Publication of WO2006085924A3 publication Critical patent/WO2006085924A3/fr
Priority to US12/231,491 priority patent/US8006608B2/en
Priority to US13/186,823 priority patent/US8281701B2/en
Priority to US13/609,338 priority patent/US8671821B1/en

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

Definitions

  • the present invention relates to armaments and more particularly to reactive and active armor.
  • the prior art discloses various arrangements of active armor in which a medial layer is positioned between an outer and an inner armor layer with a medial explosive or non-explosive layer which disrupts a shaped charge to prevent it penetration of the overall armor system.
  • U.S. Patent No. 4,368,660 discloses an arrangement in which an explosive charge is positioned between two armor layers. On detonation of the explosive, the armor layers are displaced from one another to disrupt the shaped charge jet.
  • U.S. Patent No. 4,881,448 discloses an active armor arrangement consisting of two mutually parallel metal plates with an interior sheet of incompressible formaldehyde compound. Upon impact with a hollow jet explosive charge, the incompressible layer causes the outer metal sheets to push outwardly into the path of a hollow jet explosive charge.
  • U.S. Patent No. 4,867,077 discloses an active armor in which explosive material
  • to be protected comprises a plurality of such packages, a plurality of projections attached to the
  • each of the holders holds an edge of one of the packages so that each projection is thereby attached to at least one of the packages by the holder.
  • a disadvantage to such an arrangement might be that the necessity to add additional weight and space requirement in order to provide an electrical generator of sufficient capacity to provide the necessary parent supply might add undue weight and space requirements when such an armor is used on a mobile vehicle.
  • a further disadvantage of such an arrangement might be that the effectiveness of such armor might be reduced or effectively lost in the event of a power
  • the present invention is an active armor system, which includes a first armor layer
  • a space is interposed between the first and second armor layer.
  • third layer is also positioned preferably adjacent to and on the inner side of the first layer.
  • third layer is comprised of a material selected from a piezoelectric material, an electrostrictive
  • the third layer may also be characterized as any material capable of producing an electrical or magnetic field within the space in response to the application of mechanical force on this third layer.
  • the application of force on the third layer as a result of the impacting of a shaped charge projectile on the first armor layer will result in the production of an electric or magnetic charge in the interior space which will disrupt the formation
  • Figure 1 is a vertical cross-sectional view of a preferred embodiment of the active
  • Figure 2 is a vertical cross-sectional view of another preferred embodiment of the
  • Figure 3 is a vertical cross-sectional view of a third preferred embodiment of the
  • Figure 4 is a vertical cross-sectional view of a fourth preferred embodiment of the active armor system of the present invention.
  • Figure 5 is another vertical cross-sectional view of the preferred embodiment of the present invention shown in Figure 4.
  • Figure 6 is a schematic drawing illustrating a test related to the active armor
  • Figure 7 is a graph of voltage vs. time from the test shown in Figure 7. Detailed Description of the Preferred Embodiment
  • the active armor system of the present invention is shown generally at numeral 10.
  • This active armor system 10 includes a front armor layer 11 which would preferably consist of suitable steel alloy or some other ferromagnetic material.
  • the front armor layer 11 has a front face 12 and a rear face 14.
  • the interior layer 16 is comprised of a suitable piezoelectric,
  • the magnetstrictive material may be a Terfernol-D alloy ("Doped" Terfernol) which has a
  • Group IV element such as Si or Al.
  • Other magnetostrictive materials which may be suitable include TbFe 2 and SmFe 2 .
  • strontium titanate potassium tantalite niobate, potassium tantalite, lithium niobate, and
  • an electrode 22 Inwardly adjacent the interior layer 16 there is an electrode 22 which has a front
  • this air space 28 may be a vacuum space or may be a space filled with an inert
  • a rear armor layer 30 which has a front face 32 and a rear face 34.
  • Armor layer 11 is electrically connected to solid state power converter 36 by line 38.
  • Layer 26 is electrically connected to solid state power computer 36 by line 40.
  • the front face 32 is adjacent the air space 38 and the rear face 34 is adjacent a space to be protected 44 as, for example, the interior compartment of a tank or armored personnel carrier.
  • conductive plate 46 between which there is a piezoelectric material layer 48.
  • An electrostrictive or magnetostrictive material may be substituted for the piezoelectric material in layer 48.
  • Line 52 extends from conductive layer 44 and line 54 extends from conductive layer 46 to a circuit including diodes 56, 58, 60 and 62. This circuit is connected by
  • FIG. 3 another embodiment of active armor system of the present invention is shown in which there is a front piezoelectric plate 70.
  • An electrostrictive material or magnetostrictive material may be substituted for the piezoelectric material in this plate 70.
  • Conductive plate 74 may be the exterior of a vehicle to be protected.
  • a shock wave resulting from the detonation of the shaped charge 78 will move through the piezoelectric plate 70 at about 10,000 ft/sec (V pp ).
  • cell 85 there are a plurality of cells as in cell 85 which is comprised of a conductive front plate 86, a conductive rear plate 88 and a medial piezoelectric plate 90 and an insulator 92.
  • An electrostrictive material or magnetostrictive material may be substituted for the piezoelectric
  • L-shaped member 120 is superimposed
  • L-shaped members as at L-shaped member 150, 152 and 154.
  • PZT piezoelectric material 156 was electrically connected to an oscilloscope 158 and an electric load 160.
  • the size of the PZT slab was 2.00" x 1.00" x 0.20".
  • a detonator 162 was
  • the detonator 162 was then fired and the blast 164 from the detonator produced the voltage shown in Figure 7.
  • the oscilloscope/load combination was limited to ⁇ 500 volts.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

L'invention concerne un système de blindage actif comprenant une première et une seconde couche de blindage. Un espace intérieur est ménagé entre les première et seconde couches de blindage. Une troisième couche se trouve également de préférence sur le côté intérieur de la première couche, de manière qu'elle soit adjacente à celui-ci. Cette troisième couche comprend une matière choisie parmi une matière piézorésistive, une matière électrostrictive et une matière magnétostrictive. Elle peut également se caractériser comme étant une matière capable de produire un champ magnétique ou électrique dans l'espace en réponse à l'application d'une force mécanique sur cette troisième couche. L'application de force sur la troisième couche, résultant de l'impact sur la première couche de blindage d'un projectile à charge de géométrie définie induit la production d'une charge magnétique ou électrique dans l'espace intérieur, ce qui interrompt la formation du jet de gaz de charge de géométrie prédéfinie et empêche ainsi la pénétration dans la seconde couche de blindage.
PCT/US2005/020571 2002-12-18 2005-06-10 Blindage actif comprenant une couche metallique pour la production d'un champ magnetique ou electrique WO2006085924A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US11/156,770 US7424845B2 (en) 2002-12-18 2005-06-20 Active armor
US12/231,491 US8006608B2 (en) 2002-12-18 2008-09-02 Method of providing a defense against a shaped charge
US13/186,823 US8281701B2 (en) 2002-12-18 2011-07-20 Method of providing a defense against a shaped charge
US13/609,338 US8671821B1 (en) 2002-12-18 2012-09-11 Method of providing a defense against a shaped charge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/871,146 US7104178B1 (en) 2002-12-18 2004-06-18 Active armor including medial layer for producing an electrical or magnetic field
US10/871,146 2004-06-18

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10/871,146 Continuation-In-Part US7104178B1 (en) 2002-12-18 2004-06-18 Active armor including medial layer for producing an electrical or magnetic field

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/156,770 Continuation-In-Part US7424845B2 (en) 2002-12-18 2005-06-20 Active armor

Publications (2)

Publication Number Publication Date
WO2006085924A2 true WO2006085924A2 (fr) 2006-08-17
WO2006085924A3 WO2006085924A3 (fr) 2007-04-19

Family

ID=36793487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/020571 WO2006085924A2 (fr) 2002-12-18 2005-06-10 Blindage actif comprenant une couche metallique pour la production d'un champ magnetique ou electrique

Country Status (1)

Country Link
WO (1) WO2006085924A2 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287692A (en) * 1963-02-13 1966-11-22 Raytheon Co Bender type electroacoustical apparatus
US5905225A (en) * 1995-10-25 1999-05-18 Denel (Proprietary) Ltd. Armouring
US6393921B1 (en) * 1999-05-13 2002-05-28 University Of Kentucky Research Foundation Magnetoelastic sensing apparatus and method for remote pressure query of an environment
US6703104B1 (en) * 2002-01-04 2004-03-09 Murray L. Neal Panel configuration composite armor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287692A (en) * 1963-02-13 1966-11-22 Raytheon Co Bender type electroacoustical apparatus
US5905225A (en) * 1995-10-25 1999-05-18 Denel (Proprietary) Ltd. Armouring
US6393921B1 (en) * 1999-05-13 2002-05-28 University Of Kentucky Research Foundation Magnetoelastic sensing apparatus and method for remote pressure query of an environment
US6703104B1 (en) * 2002-01-04 2004-03-09 Murray L. Neal Panel configuration composite armor

Also Published As

Publication number Publication date
WO2006085924A3 (fr) 2007-04-19

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