System and method for neutralizing shaped-charge threats

Patent metadata

Field	Value
Publication number	US-9891027-B2
Application number	US-201515303608-A
Country	US
Kind code	B2
Filing date	Apr 27, 2015
Priority date	Apr 28, 2014
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

The invention relates to an interceptor type system for neutralizing a shaped charge threat, which comprises: (a) a detection system for detecting an approach of a shaped charge projectile, for calculating upon such detection its course of approach, and for activating an interceptor to create a flux of intercepting fragments within a destruction corridor; and (b) one or more of said interceptors, each comprising one or more magazines of fragments, each magazine comprises said fragments and an explosive layer which in turn explodes thereby to create said flux of intercepting fragments within said destruction corridor.

First claim

The invention claimed is:

1. An interceptor type system for neutralizing a shaped charge projectile while avoiding initiation of the projectile's detonator, thereby also avoiding detonation of its warhead charge, which comprises:
(a) a detection system for detecting an approach of a projectile, for calculating upon such detection its course and progression, and for activating an interceptor to create a flux of intercepting fragments within a destruction corridor; and
(b) one or more of said interceptors, each interceptor comprising one or more magazines of fragments, each magazine comprising said fragments and an explosive layer, said explosive layer explodes upon said activation thereby to create said flux of intercepting fragments within said destruction corridor;
wherein each of said fragments are made of material selected from one or more of the following classes of material and respective characteristics:

Material Characteristic
Class A
Class B
Class C

Density [Gr/Cm 3 ]
0.8-1.5
2.5-3.0
4.0-4.5

Tensile Strength [MPa]
 40-200
300-600
1000-1500

Mechanical Impedance
0.3 × 10 6 -
12.3 × 10 6 -
20.0 × 10 6 -

[Kg/(sec.-m 2 )]
2.5 × 10 6
15.0 × 10 6
25.0 × 10 6

and wherein if the approached projectile is happened to be a shaped-charge type projectile, the projectile is destroyed by said flux of intercepting fragments without initiation of the projectile's detonator.

2. System according to claim 1 , wherein the velocity of the fragments at the location of impact is in the range of between 800 to 2000 m/sec.

3. System according to claim 1 , wherein the flux density at the location of impact with the projectile is between 4000 to 12000 fragments per m 2 .

4. System according to claim 1 , wherein the fragments are pre-packed within the magazine in a shape of a planar or curved shell.

5. System according to claim 4 , wherein the dimensions of said planar or curved shell are up to 400×700 mm, and thickness between 4 mm and 15 mm.

6. System according to claim 1 , used for protecting a moving or a stationary object from shaped charge threats.

7. System according to claim 6 , wherein plurality of interceptors are provided in the periphery of said moving or a stationary object.

8. System according to claim 1 , wherein each interceptor comprises two magazines that are mounted in a back-to-back manner, therefore to produce said flux of intercepting fragments within two destruction corridors, respectively.

9. System according to claim 1 , wherein the magazine comprises a mixture of fragments, made from two or more of said classes of materials.

10. System according to claim 1 , wherein each fragment is made from two or more of said classes of materials.

11. System according to claim 1 , wherein the fragments are pre-formed within the magazine in a shape of a planar or curved shell.

Assignees

• Rafael Advanced Defense Systems Ltd

Inventors

• Rahav Shahar
• Ben Ezra Elad
• Magen Nitzan
• Hazan Gili
• Glikin Leonid

Classifications

• F41H11/02 Primary

  Anti-aircraft or anti-guided missile {or anti-torpedo} defence installations or systems (cartridges or missiles for producing smoke or for dispensing radar chaff or infrared material F42B5/15, F42B12/48, F42B12/70; {informative reference: details of radar or sonar systems G01S7/00; jamming or electronic countermeasures G01S7/38, G01S7/495, H04K3/00}) · CPC title

• G01S13/66

  Radar-tracking systems; Analogous systems · CPC title

• F41H5/007

  Reactive armour; Dynamic armour · CPC title