IP Library Granted Patent US 8,122,833
Granted Patent B2
US 8,122,833 · App. 11/538,763 · Granted Feb 28, 2012

Reactive material enhanced projectiles and related methods

Assignee: Alliant Techsystems Inc.
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Quick Facts
Patent No.
US 8,122,833
App. No.
11/538,763
Granted
Feb 28, 2012
Kind
B2
Abstract

A munition, such as a projectile formed of at least one reactive material, is provided. In one embodiment, the projectile includes a body portion formed of at least one reactive material composition wherein the at least one reactive material composition defines at least a portion of an exterior surface of the projectile. In other words, a portion of the reactive material may be left “unbuffered” or exposed to the barrel of a gun or weapon from which it is launched and similarly exposed to a target with which the projectile subsequently impacts. In one embodiment, the projectile may be formed with a jacket surrounding a portion of the reactive material to provide additional structural integrity. The projectile may be formed by casting or pressing the reactive material into a desired shape. In another embodiment of the invention, the reactive material may be extruded into a near-net shape and then machined into the desired shape.

Claims (16)

1. A projectile comprising:

at least one reactive material composition comprised of a first component and at least a second component, wherein the first component is reactive with the at least a second component;

wherein at least a portion of the at least one reactive material composition defines an unbuffered exterior surface of the projectile, the at least a portion of the at least one reactive material composition comprising the first component and the at least a second component; and

wherein the unbuffered exterior surface comprises at least a substantial portion of the exterior surface of the projectile and comprises an intended leading tip of the projectile.

2. The projectile of claim 1 , wherein the at least one reactive material composition comprises at least one fuel, at least one oxidizer and at least one binder.

3. The projectile of claim 2 , wherein the at least one binder comprises at least one of a urethane binder, an epoxy binder and a polymer binder.

4. The projectile of claim 2 , wherein the at least one fuel comprises at least one of a metal, an intermetallic material, and a thermitic composition.

5. The projectile of claim 2 , wherein the at least one oxidizer comprises at least one of ammonium perchlorate, an alkali metal perchlorate, lithium nitrate, sodium nitrate, potassium nitrate, rubidium nitrate, cesium nitrate, strontium nitrate, barium nitrate, barium and strontium peroxide.

6. The projectile of claim 1 , further comprising a jacket partially surrounding the at least one reactive material composition.

7. The projectile of claim 6 , wherein the jacket is formed of a material comprising at least one of copper and steel.

8. The projectile of claim 1 , wherein the at least a portion of the at least one reactive material composition defining an unbuffered exterior surface of the projectile further comprises a main body portion of the projectile.

9. The projectile of claim 1 , wherein the at least one reactive material composition is configured as a substantially monolithic body.

10. The projectile of claim 1 , further comprising a core member at least partially disposed in the at least one reactive material composition.

11. The projectile of claim 10 , wherein the core member is substantially surrounded by the at least one reactive material composition.

12. The projectile of claim 10 , wherein the core member comprises a material that is denser than the at least one reactive material composition.

13. The projectile of claim 12 , wherein the core member comprises tungsten.

Assignments (12)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 8, 2021
From: NORTHROP GRUMMAN INNOVATION SYSTEMS LLC
To: NORTHROP GRUMMAN SYSTEMS CORPORATION
Reel/Frame 055256/0892 →
CHANGE OF NAME Recorded Feb 4, 2021
From: NORTHROP GRUMMAN INNOVATION SYSTEMS, INC.
To: NORTHROP GRUMMAN INNOVATION SYSTEMS LLC
Reel/Frame 055223/0425 →
CHANGE OF NAME Recorded Nov 1, 2018
From: ORBITAL ATK, INC.
To: NORTHROP GRUMMAN INNOVATION SYSTEMS, INC.
Reel/Frame 047400/0381 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jun 6, 2018
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
To: ORBITAL ATK, INC.
Reel/Frame 046477/0874 →
RELEASE OF SECURITY INTEREST Recorded Oct 8, 2015
From: BANK OF AMERICA, N.A.
To: ALLIANT TECHSYSTEMS INC.; FEDERAL CARTRIDGE CO.; EAGLE INDUSTRIES UNLIMITED, INC.; AMMUNITION ACCESSORIES, INC.; ORBITAL ATK, INC. (F/K/A ALLIANT TECHSYSTEMS INC.)
Reel/Frame 036816/0624 →
RELEASE OF SECURITY INTEREST Recorded Oct 7, 2015
From: BANK OF AMERICA, N.A.
To: ALLIANT TECHSYSTEMS INC.
Reel/Frame 036807/0671 →
SECURITY AGREEMENT Recorded Sep 30, 2015
From: ORBITAL ATK, INC.; ORBITAL SCIENCES CORPORATION
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 036732/0170 →
CHANGE OF NAME Recorded Apr 14, 2015
From: ALLIANT TECHSYSTEMS INC.
To: ORBITAL ATK, INC.
Reel/Frame 035423/0659 →
SECURITY AGREEMENT Recorded Nov 26, 2013
From: ALLIANT TECHSYSTEMS INC.; CALIBER COMPANY; EAGLE INDUSTRIES UNLIMITED, INC.; FEDERAL CARTRIDGE COMPANY; SAVAGE ARMS, INC.; SAVAGE RANGE SYSTEMS, INC.; SAVAGE SPORTS CORPORATION
To: BANK OF AMERICA, N.A.
Reel/Frame 031731/0281 →
SECURITY AGREEMENT Recorded Nov 4, 2010
From: ALLIANT TECHSYSTEMS INC.; AMMUNITION ACCESSORIES INC.; ATK COMMERCIAL AMMUNITION COMPANY INC.; ATK COMMERCIAL AMMUNITION HOLDINGS COMPANY; ATK LAUNCH SYSTEMS INC.; ATK SPACE SYSTEMS INC.; FEDERAL CARTRIDGE COMPANY; EAGLE INDUSTRIES UNLIMITED, INC.; EAGLE MAYAGUEZ, LLC; EAGLE NEW BEDFORD, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 025321/0291 →
SECURITY AGREEMENT Recorded Aug 24, 2007
From: AMMUNITION ACCESSORIES INC.; ATK COMMERCIAL AMMUNITION COMPANY INC.; ATK COMMERCIAL AMMUNITION HOLDINGS COMPANY INC.; ATK LAUNCH SYSTEMS INC.; ATK SPACE SYSTEMS INC.; FEDERAL CARTRIDGE COMPANY; MICRO CRAFT INC.; ALLIANT TECHSYSTEMS INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 019733/0757 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 2, 2007
From: NIELSON, DANIEL B.; TRUITT, RICHARD M.; ASHCROFT, BENJAMIN N.
To: ALLIANT TECHSYSTEMS INC.
Reel/Frame 018698/0943 →
Continuity (2)
Provisional Application 60723465 · Oct 4, 2005
Related Publication 20080035007A1 · Feb 14, 2008