Reactive armor constructions and explosive packages suitable therefor

• US 4,867,077 A
• Filed: 12/08/1987
• Issued: 09/19/1989
• Est. Priority Date: 12/08/1987
• Status: Expired due to Fees

• Current Assignee: Royal Ordnance Plc (L3Harris Technologies, Inc.)
• Original Assignee: Royal Ordnance Plc (L3Harris Technologies, Inc.)
• Inventors: Granelli, Mario L., Perry, Melvyn, Marlow, Peter G.
• Primary Examiner(s): Wolfe, Robert L.
• Application Number:
  US07/130,275
• Time in Patent Office: 651 Days
• Field of Search: 109/36, 109/37, 109/84, 109/82, 109/80, 89/36.17, 89/36.02, 89/36.08
• US Class Current: 109/36
• CPC Class Codes: F41H 5/007 Reactive armour; Dynamic armour

Abstract

An explosive package for use in reactive armor comprises an explosive material embedded between layers of a resilient material which are contained between upper and lower rigid plates in a sandwich structure. A construction for the application of reactive armor to a structure to be protected comprises a plurality of such packages, a plurality of projections attached to the said structure and a plurality of holders each attachable to and thereby running between adjacent projections, each of the holders in use holding an edge of one of the said packages, each projection thereby being attached to at least one of the said packages by the holder attached thereto.

Claims

1. An explosive package for use in a reactive armor construction, said package comprising an explosive material embedded between layers of a resilient material, said layers of resilient material being contained between upper and lower rigid plates in a sandwich structure and wherein said rigid plates extend beyond end edges of said layers of resilient material to provide end space between said upper and lower rigid plates adjacent end edges thereof, said end spaces accommodating a locating rib structure to restrain lateral movement of said explosive material, and attachment means provided by said upper and lower rigid plates and by said locating rib structure to facilitate attachment of said explosive package to a structure to be protected thereby.

2. A package as claimed in claim 1 and wherein the explosive material is contained in a waterproof jacket embedded between the layers of resilient material.

3. A package as claimed in claim 1 and wherein the explosive material is a plastic obnded explosive material.

4. A reactive armour construction comprising a plurality of explosive packages each being a package as claimed in claim 1 wherein the packages are arranged to protect a structure.

5. A reactive armour construction as claimed in claim 4 and wherein the construction comprises a plurality of packages of explosive material each as claimed in claim 1, a plurality of projections attached in use to the structure to be protected and a plurality of holders each attachable to and thereby running between adjacent projections, each of the holders in use holding an edge of one of the said packages, each projection thereby being attached to at least one of the said packages by the holder attached thereto.

6. A reactive armour construction as claimed in claim 5 and wherein projections betweem a plurality of adjacent packages are attached to the holders or each of those packages, the packages being arranged in a row and column matrix with projections attached commonly to the holders adjacent to the corners of the packages.

7. A construction as claimed in claim 5 and wherein each of the projections comprises a boss which has an upper plate attached thereto to which the appropriate holder or holders are attached.

8. A construction as claimed in claim 5 and wherein a common attachment secures the ends of adjacent holders meeting at the corner of a given package, as well as overlapping inert material at that corner to the appropriate projection.

9. A construction as claimed in claim 8 and wherein each common attachment comprises a screw joint at the corner of the package holding the adjoining holders and the inert material of the package together and to the projection.

10. A construction as claimed in claim 9 and wherein the holders comprise edging strips having an approximate C-shape or U-shape in cross-section, the edges of the inert material of the package being retained as an insert between the limbs of the C or U or the strip.

11. A construction as claimed in claim 10 and wherein the strips adjoining at the corner of a given package have end portions such that one fits one inside the other at the angle made by the package corner to facilitate attaching the strips together as described above.

12. A construction as claimed in claim 11 and wherein one of each pair of adjoining strips has an end portion in which the limbs of the C or U are closer together than in the main part of the strip.