Warhead for generating a blast on an extended region of a target surface

Patent metadata

Field	Value
Publication number	US-9982978-B2
Application number	US-201515535051-A
Country	US
Kind code	B2
Filing date	Nov 15, 2015
Priority date	Dec 16, 2014
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

The present invention relates to warheads with blast wave conditioners and in particular to devices for quickly removing a door to permit entry through the doorway. It discloses a device and method of shaping the pressure wave pattern by the use of inert material. The inert material of the present invention is used to reduce localized directional effects occurring at the point of impact, instead generating a more diffuse pressure-wave pattern across the target surface.

First claim

What is claimed is:

1. A warhead comprising:
(a) an explosive charge having a direction of elongation and a convex front surface; and
(b) a non-fragment-forming blast-shaping arrangement comprising a quantity of inert powder deployed to cover a majority of said convex front surface.

2. The warhead of claim 1 , wherein said powder is a metal powder.

3. The warhead of claim 2 , wherein said metal powder is selected from the group consisting of: tungsten; molybdenum; and metal alloys including at least one of tungsten and molybdenum.

4. The warhead of claim 2 , wherein said metal powder is dispersed in a polymer binder.

5. The warhead of claim 1 , wherein said powder is deployed to cover at least 90 percent of said convex front surface.

6. The warhead of claim 1 , wherein a rear surface of said explosive charge has a convex surface, the warhead further comprising a non-fragment-forming rear confinement covering a majority of a rear surface of said explosive charge.

7. The warhead of claim 1 , further comprising a fuze configured to detonate said explosive charge on impact of the warhead against a target.

8. A projectile comprising:
(a) a projectile body; and
(b) the warhead of claim 1 disposed within said projectile body.

9. The projectile of claim 8 , wherein said projectile is a 40 mm grenade.

10. The projectile of claim 8 , wherein said projectile is unguided.

11. The projectile of claim 8 , wherein said projectile further comprises a guidance system.

12. The projectile of claim 11 , wherein said projectile further comprises a rocket motor deployed for propelling the projectile.

13. The projectile of claim 8 , wherein said projectile is configured for use without any standoff extension.

14. A method comprising the steps of:
(a) obtaining a warhead according to claim 1 ; and
(b) detonating the warhead in contact with a door in order to remove the door.

15. The method of claim 14 , wherein said warhead is incorporated into a projectile which is fired at the door.

16. The method of claim 15 , wherein said projectile is a 40 millimeter grenade fired from a grenade launcher.

Assignees

• Rafael Advanced Defense Systems Ltd

Inventors

• Teper Yosef
• Nadav Tal
• Laos Vitali

Classifications

• F42B12/207 Primary

  characterised by the explosive material or the construction of the high explosive warhead, e.g. insensitive ammunition · CPC title

• F42B12/204

  for attacking structures, e.g. specific buildings or fortifications, ships or vehicles · CPC title

• F42B30/04 Primary

  Rifle grenades · CPC title

• F42B12/46

  for dispensing gases, vapours, powders or chemically-reactive substances (F42B12/70 takes precedence) · CPC title