US20110138993A1 - System of active ballistic protection - Google Patents

System of active ballistic protection Download PDF

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Publication number
US20110138993A1
US20110138993A1 US12/816,895 US81689510A US2011138993A1 US 20110138993 A1 US20110138993 A1 US 20110138993A1 US 81689510 A US81689510 A US 81689510A US 2011138993 A1 US2011138993 A1 US 2011138993A1
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US
United States
Prior art keywords
panels
respect
pbx
energetic material
ligands
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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.)
Abandoned
Application number
US12/816,895
Inventor
Paolo Mariotti
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Oto Melara SpA
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Oto Melara SpA
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Filing date
Publication date
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Assigned to OTO MELARA S.P.A. reassignment OTO MELARA S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MARIOTTI, PAOLO
Publication of US20110138993A1 publication Critical patent/US20110138993A1/en
Priority to US14/281,208 priority Critical patent/US20150268004A1/en
Abandoned legal-status Critical Current

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    • 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
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C06B33/08—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/12—Compositions or products which are defined by structure or arrangement of component of product having contiguous layers or zones

Definitions

  • the present invention refers to a system of active ballistic protection.
  • the present invention refers to a system of active ballistic protection, also called active armour usable for the protection of armored vehicles or for fixed stations which can be subject to attacks with firearms.
  • the typical configuration of reactive armors is constituted by front and rear stratifications which have the purpose of mechanically opposing to the menace and by an intermediate stratification which has the purpose of accelerating the most external screen.
  • the energy characterization of the intermediate stratification can be subdivided into three main categories.
  • the energetic layer is constituted by an explosive. This configuration is the most efficient reactive armor.
  • the intermediate energetic layer is constituted by an energetic material which lacks the capacity of detonating.
  • This category has an efficacy lower than the first category.
  • the intermediate layer is constituted by non-energetic material which, depending on its chemical-physical characteristics, is able to accelerate the most external layer of the reactive sandwich, but has less efficiency than the first and second categories.
  • the present invention proposes to achieve a system of active ballistic protection formed by at least two external metallic layers between which is inserted at least one reactive layer which, when reached by metal or other material that penetrates into one of the external metallic layers, reacts by increasing its thickness in the direction of advancement of the penetrating material, thus increasing the protective capacity of the external metallic layers.
  • the behavior of the reactive layer is obtained through the use of a weakened detonating material.
  • An aspect of the present invention refers to a system of active ballistic protection having the characteristics of the attached claim 1 .
  • FIG. 1 schematically shows an exploded view of a panel of the system of active ballistic protection according to the present invention.
  • FIG. 2 shows an embodiment of the system according to the present invention provided with two panels parallel to each other and inclined with respect to the incoming direction of a menace, such as a projectile.
  • the system according to the present invention can be used as reinforcement and armour-plating panel for vehicles or for fixed stations.
  • the kind of menace for which the system gives protection is a menace brought by material which is sent or projected at high speed in the direction of the station to be protected.
  • the menace may be a melted or semi-melted metallic material constituted by one or more projectiles fired by rocket launchers or similar firearms, or shaped charge jets, generated by static blasts.
  • the system according to the present invention comprises at least one panel 1 formed by at least two external metallic layers 2 and 3 between which a layer of energetic material 4 is inserted.
  • Energetic material 4 may comprise, for example, a weakened detonating material.
  • the weakened detonating material has the characteristic of “reacting” by expanding once the menace, for example the projectile, has perforated an external metallic layer 2 or 3 .
  • the two metallic layers 2 and 3 of the sandwich are preferably comprised of two plates having a lateral size and thickness of about 2 mm.
  • the two metallic layers or plates 2 and 3 are preferably separated by a frame 5 , which may comprise for example nylon, along the entire rim.
  • the assembly may be provided with passing holes to facilitate assembly.
  • a suitable energetic material that may be used according to the present invention is the explosive PBX N109, as basic energetic material from which it is possible to obtain the weakening by partially or entirely eliminating the content of aluminum normally contained in PBX N109 and by diminishing the weight percentage of RDX with respect to the inert ligands normally contained in PBX N109, which ligands may comprise for example polyurethanic ligands.
  • a suitable percentage of RDX of diminished content comprises between about 30% and about 50%, preferably about 40% with respect to the ligands contained in PBX N109.
  • FIG. 2 illustrates an exemplary system comprising two panels arranged parallel to each other and separated one from the other by means of a spacer element 6 .
  • the panels can be inclined with respect to the incoming direction of the menace and arranged inside a metallic box body 7 .
  • a suitable inclination angle of the panels is between about 20° and about 40°, preferably about 30°.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)
  • Amplifiers (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

A system of active ballistic protection formed by at least a panel (1) comprising at least two external metallic layers (2,3) between which a layer of energetic material (4) is inserted, characterized in that said energetic material is obtained from a weakened detonating material.

Description

    CROSS-REFERENCE TO RELATED APPLICATION
  • This application claims the benefit of earlier filed Italian Patent Application No. TO2009A000458, filed Jun. 16, 2009, the disclosure of which is incorporated herein in its entirety.
    • BACKGROUND OF THE INVENTION
  • 1. Field of Invention
  • The present invention refers to a system of active ballistic protection. In particular, the present invention refers to a system of active ballistic protection, also called active armour usable for the protection of armored vehicles or for fixed stations which can be subject to attacks with firearms.
  • 2. Relevant Technology
  • The typical configuration of reactive armors is constituted by front and rear stratifications which have the purpose of mechanically opposing to the menace and by an intermediate stratification which has the purpose of accelerating the most external screen. The energy characterization of the intermediate stratification can be subdivided into three main categories.
  • In a first category, the energetic layer is constituted by an explosive. This configuration is the most efficient reactive armor.
  • In a second category, the intermediate energetic layer is constituted by an energetic material which lacks the capacity of detonating. This category has an efficacy lower than the first category.
  • In the third category, the intermediate layer is constituted by non-energetic material which, depending on its chemical-physical characteristics, is able to accelerate the most external layer of the reactive sandwich, but has less efficiency than the first and second categories.
    • SUMMARY OF THE INVENTION
  • The present invention proposes to achieve a system of active ballistic protection formed by at least two external metallic layers between which is inserted at least one reactive layer which, when reached by metal or other material that penetrates into one of the external metallic layers, reacts by increasing its thickness in the direction of advancement of the penetrating material, thus increasing the protective capacity of the external metallic layers.
  • The behavior of the reactive layer is obtained through the use of a weakened detonating material.
  • An aspect of the present invention refers to a system of active ballistic protection having the characteristics of the attached claim 1.
  • Other embodiments of the panel are exemplified by the subsequent dependent claims.
    • BRIEF DESCRIPTION OF DRAWINGS
  • To further clarify the above and other advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which:
  • FIG. 1 schematically shows an exploded view of a panel of the system of active ballistic protection according to the present invention; and
  • FIG. 2 shows an embodiment of the system according to the present invention provided with two panels parallel to each other and inclined with respect to the incoming direction of a menace, such as a projectile.
    •  DETAILED DESCRIPTION
  • With reference to the abovementioned figures, the system according to the present invention can be used as reinforcement and armour-plating panel for vehicles or for fixed stations.
  • The kind of menace for which the system gives protection is a menace brought by material which is sent or projected at high speed in the direction of the station to be protected. For example, the menace may be a melted or semi-melted metallic material constituted by one or more projectiles fired by rocket launchers or similar firearms, or shaped charge jets, generated by static blasts.
  • As illustrated in FIG. 1, the system according to the present invention comprises at least one panel 1 formed by at least two external metallic layers 2 and 3 between which a layer of energetic material 4 is inserted. Energetic material 4 may comprise, for example, a weakened detonating material. The weakened detonating material has the characteristic of “reacting” by expanding once the menace, for example the projectile, has perforated an external metallic layer 2 or 3.
  • The two metallic layers 2 and 3 of the sandwich are preferably comprised of two plates having a lateral size and thickness of about 2 mm.
  • For containing the sheet of energetic material, the two metallic layers or plates 2 and 3 are preferably separated by a frame 5, which may comprise for example nylon, along the entire rim. The assembly may be provided with passing holes to facilitate assembly.
  • A suitable energetic material that may be used according to the present invention is the explosive PBX N109, as basic energetic material from which it is possible to obtain the weakening by partially or entirely eliminating the content of aluminum normally contained in PBX N109 and by diminishing the weight percentage of RDX with respect to the inert ligands normally contained in PBX N109, which ligands may comprise for example polyurethanic ligands. A suitable percentage of RDX of diminished content comprises between about 30% and about 50%, preferably about 40% with respect to the ligands contained in PBX N109.
  • FIG. 2 illustrates an exemplary system comprising two panels arranged parallel to each other and separated one from the other by means of a spacer element 6. According to one embodiment, the panels can be inclined with respect to the incoming direction of the menace and arranged inside a metallic box body 7. A suitable inclination angle of the panels is between about 20° and about 40°, preferably about 30°.
  • It will be appreciated that different numbers of panels can be used with different geometric arrangements, and furthermore there can be present other passive elements.
  • The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (20)

1. An apparatus for active ballistic protection, comprising:
at least one panel comprised of at least two external metallic layers; and
a layer of energetic material positioned between the at least two external metallic layers, wherein said energetic material is obtained from a weakened detonating material.
2. An apparatus according to claim 1, wherein said weakened energetic material is derived from the explosive PBX N109.
3. An apparatus according to claim 1, wherein said weakened energetic material is obtained by eliminating aluminum normally contained in PBX N109 and providing a diminished weight percentage of RDX normally contained in PBX N109 with respect to the amount of inert ligands contained in PBX N109.
4. An apparatus according to claim 3, wherein the diminished weight percentage of RDX is between about 30% and about 50% with respect to the amount of inert ligands.
5. An apparatus according to claim 3, wherein the diminished weight percentage of RDX is about 40% with respect to the amount of inert ligands.
6. An apparatus according to claim 3, wherein the inert ligands comprise polyurethanic ligands.
7. An apparatus according to claim 1, the apparatus comprising two panels arranged parallel to each other and separated from each other by means of a spacer element.
8. An apparatus according to claim 7, wherein said panels are inclined with respect to an incoming direction of a menace.
9. An apparatus according to claim 8, wherein an inclination angle of the panels is between about 20° and about 40°.
10. An apparatus according to claim 8, wherein an inclination angle of the panels is about 30°.
11. An apparatus according to claim 7, wherein said panels are positioned inside a metallic box body.
12. An apparatus according to claim 7, further comprising one or more passive elements positioned between the panels.
13. An apparatus for active ballistic protection, comprising:
at least one panel comprised of at least two external metallic layers; and
a layer of energetic material positioned between the at least two external metallic layers, wherein said energetic material is comprised of a weakened detonating material obtained by at least partially eliminating aluminum normally contained in PBX N109 and providing a diminished weight percentage of RDX normally contained in PBX N109 with respect to the amount of inert ligands contained in PBX N109.
14. An apparatus according to claim 13, wherein the diminished weight percentage of RDX is between about 30% and about 50% with respect to the amount of inert ligands and wherein the inert ligands comprise polyurethanic ligands.
15. An apparatus according to claim 13, the apparatus comprising a plurality of panels arranged parallel to each other and separated from each other by means of a spacer element, wherein said panels are inclined with respect to an incoming direction of a menace.
16. An apparatus according to claim 15, wherein the panels are positioned inside a metallic box body at an inclination angle between about 20° and about 40°.
17. An apparatus for active ballistic protection, comprising:
a metallic box body; and
a plurality of panels positioned within the metallic box body and arranged parallel to each other, each panel being comprised of:
at least two external metallic layers; and
a layer of energetic material positioned between the at least two external metallic layers, wherein said energetic material is obtained from a weakened detonating material.
18. An apparatus according to claim 17, the plurality of panels being arranged parallel to each other and separated from each other by means of a spacer element.
19. An apparatus according to claim 17, wherein said panels are inclined with respect to an incoming direction of a menace.
20. An apparatus according to claim 17, wherein the panels are positioned inside the metallic box body at an inclination angle between about 20° and about 40°.
US12/816,895 2009-06-16 2010-06-16 System of active ballistic protection Abandoned US20110138993A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/281,208 US20150268004A1 (en) 2009-06-16 2014-05-19 System of active ballistic protection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2009A000458A IT1395772B1 (en) 2009-06-16 2009-06-16 ACTIVE BALLISTIC PROTECTION SYSTEM.
ITTO2009A000458 2009-06-16

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/281,208 Continuation-In-Part US20150268004A1 (en) 2009-06-16 2014-05-19 System of active ballistic protection

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US20110138993A1 true US20110138993A1 (en) 2011-06-16

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US (1) US20110138993A1 (en)
EP (1) EP2264393A1 (en)
IL (1) IL205875A (en)
IT (1) IT1395772B1 (en)
SG (1) SG186662A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8443708B2 (en) 2006-01-17 2013-05-21 Amsafe Bridport Limited Textile armour
US11340043B2 (en) * 2019-07-19 2022-05-24 Mb ,,Iderika″ Vertical explosive reactive armor, their construction and method of operation
US20240085151A1 (en) * 2021-03-22 2024-03-14 Rafael Advanced Defence Systems Ltd. Fragile reactive protective armor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105890458B (en) * 2016-06-28 2017-06-23 中国人民解放军军械工程学院 A kind of means of defence of anti-high-velocity armor-piercing shell penetration

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US4726919A (en) * 1985-05-06 1988-02-23 Morton Thiokol, Inc. Method of preparing a non-feathering nitramine propellant
US5070764A (en) * 1989-01-18 1991-12-10 The State Of Israel, Ministry Of Defense, Rafael Armament Combined reactive and passive armor
US5354499A (en) * 1987-07-27 1994-10-11 Elliott Stanley B Reaction products of lyotropic liquid crystal salt complexes
US5413027A (en) * 1993-03-19 1995-05-09 The United States Of America As Represented By The Secretary Of The Army Reactive armor with radar absorbing structure
US20030164087A1 (en) * 2000-02-10 2003-09-04 Michel Vives Wall protecting device
US6619181B1 (en) * 2002-05-16 2003-09-16 The United States Of America As Represented By The Secretary Of The Army Apparatus for reversing the detonability of an explosive in energetic armor
US20060070690A1 (en) * 2003-08-29 2006-04-06 Miller Paul L Recovery of the energetic component from plastic bonded explosives
US20060086243A1 (en) * 2004-10-18 2006-04-27 Agency For Defense Development Of Republic Of Korea Explosive reactive armor with momentum transfer mechanism
US8020483B2 (en) * 2007-09-20 2011-09-20 Rafael, Advanced Defense Systems Ltd. Armor module

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DE3842677C1 (en) * 1988-12-19 1996-07-18 Rheinmetall Ind Gmbh Active armour esp. for armoured vehicle
DK1517110T3 (en) * 2003-09-16 2008-05-19 Geke Technologie Gmbh Combined protective device
IL167985A (en) * 2005-04-12 2011-06-30 Rafael Advanced Defense Sys Extremely insensitive detonating substance and method for its manufacture

Patent Citations (9)

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Publication number Priority date Publication date Assignee Title
US4726919A (en) * 1985-05-06 1988-02-23 Morton Thiokol, Inc. Method of preparing a non-feathering nitramine propellant
US5354499A (en) * 1987-07-27 1994-10-11 Elliott Stanley B Reaction products of lyotropic liquid crystal salt complexes
US5070764A (en) * 1989-01-18 1991-12-10 The State Of Israel, Ministry Of Defense, Rafael Armament Combined reactive and passive armor
US5413027A (en) * 1993-03-19 1995-05-09 The United States Of America As Represented By The Secretary Of The Army Reactive armor with radar absorbing structure
US20030164087A1 (en) * 2000-02-10 2003-09-04 Michel Vives Wall protecting device
US6619181B1 (en) * 2002-05-16 2003-09-16 The United States Of America As Represented By The Secretary Of The Army Apparatus for reversing the detonability of an explosive in energetic armor
US20060070690A1 (en) * 2003-08-29 2006-04-06 Miller Paul L Recovery of the energetic component from plastic bonded explosives
US20060086243A1 (en) * 2004-10-18 2006-04-27 Agency For Defense Development Of Republic Of Korea Explosive reactive armor with momentum transfer mechanism
US8020483B2 (en) * 2007-09-20 2011-09-20 Rafael, Advanced Defense Systems Ltd. Armor module

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* Cited by examiner, † Cited by third party
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Brian L. Hamshere et al., Evaluation of PBXN-109; August 2003, DSTO-TR-1471; see last pages 8-50 of detailed Office action. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8443708B2 (en) 2006-01-17 2013-05-21 Amsafe Bridport Limited Textile armour
US8752468B2 (en) 2006-01-17 2014-06-17 Amsafe Bridport Limited Textile Armour
US8881638B2 (en) 2006-01-17 2014-11-11 Amsafe Bridport Limited Textile armour
US9310169B2 (en) 2006-01-17 2016-04-12 Amsafe Bridport Limited Textile armour
US11340043B2 (en) * 2019-07-19 2022-05-24 Mb ,,Iderika″ Vertical explosive reactive armor, their construction and method of operation
US20240085151A1 (en) * 2021-03-22 2024-03-14 Rafael Advanced Defence Systems Ltd. Fragile reactive protective armor

Also Published As

Publication number Publication date
IL205875A0 (en) 2010-12-30
IL205875A (en) 2015-09-24
IT1395772B1 (en) 2012-10-19
ITTO20090458A1 (en) 2010-12-17
SG186662A1 (en) 2013-01-30
EP2264393A1 (en) 2010-12-22

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AS Assignment

Owner name: OTO MELARA S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARIOTTI, PAOLO;REEL/FRAME:024617/0118

Effective date: 20100621

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION