Reactive armor wall structure

• US 5,012,721 A
• Filed: 02/27/1990
• Issued: 05/07/1991
• Est. Priority Date: 03/27/1986
• Status: Expired due to Fees

• Current Assignee: Affarsverket Ffv
• Original Assignee: Affarsverket Ffv
• Inventors: Lundgren, Roger, Lennart, Sjoo, Medin, Gunnar, Olsson, Erik
• Primary Examiner(s): Jordan, Charles T.
• Assistant Examiner(s): Johnson, Stephen
• Application Number:
  US07/488,519
• Time in Patent Office: 434 Days
• Field of Search: 89/36.02, 89/36.08, 89/36.17, 109/36, 109/37, 428/911
• US Class Current: 89/36.17
• CPC Class Codes: F41H 5/007 Reactive armour; Dynamic armour

Abstract

An enclosed active armor arrangement wherein the panels that form the enclosure have a product of the density and the thickness of the side panels that is greater than the product of the density and the thickness of the armor panels to provide for a reflective action on the detonation waves of the explosive. This reflective action accentuates the destructive effect on the incoming explosive charge jet.

Claims

1. A reactive armour wall structure for protection against hollow explosive charge jets, comprising:

at least one closed container formed by a separate and replaceable panel structure, and in which a high detonation pressure can be produced,

said separate and replaceable panel structure consisting of two mutually spaced and mutually parallel armour walls and mutually spaced armour side walls extending substantially at right angles to said two mutually spaced and mutually parallel armour walls across opposite portion thereof, to define said closed container,

an explosive substance filling said closed container and which is detonated by one of said hollow explosive charge jets,

said mutually spaced armour side walls having a density greater than 2000 kg./m³ such that said side walls possess high shockwave reflecting properties, and so that detonation shockwaves initiated in said explosive substance in said closed container by the hollow explosive charge jet which propagate in respective opposite directions away from the jet and towards said side walls are substantially reflected by said side walls backing respective reverse directions towards the jet to disturb the jet, the side walls also being made of ductile material and having a thickness and mass such that a product of density and thickness of said side walls is at least equal to a product of density and thickness of said two mutually spaced and mutually parallel armour walls of said separate and replaceable panel structure.

2. A reactive armour wall structure according to claim 1, wherein said two mutually spaced and parallel armour walls of said separate and replaceable panel structure comprise two mutually spaced and mutually parallel armour plates which are able to move in relation to one another as a protective function of the wall structure.

3. A reactive armour wall structure according to claim 1, wherein the explosive substance has a detonation pressure in excess of 10 GPa.

4. A reactive armour wall structure according to claim 1, wherein each of said side walls has a yield point (σ

_s) in excess of 200 MPa.

5. A reactive armour wall structure according to claim 1, and further comprising:

a shock absorbing material effective in preventing flashover arranged between adjacent panel structures when more than one of said panel structures is incorporated in said reactive armour wall structure.

6. A reactive armour wall structure according to claim 1, and further comprising:

a material having good shockwave absorbing properties placed between the reactive armour wall structure and an object to be protected.

7. A reactive armour wall structure according to claim 1, wherein said mutually spaced armour side walls have high shockwave reflecting properties equivalent to steel.