Articles of ordnance including reactive material enhanced projectiles, and related methods

• US 9,982,981 B2
• Filed: 06/25/2015
• Issued: 05/29/2018
• Est. Priority Date: 02/23/2000
• Status: Active Grant

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Orbital ATK Inc. (Northrop Grumman Corporation)
• Inventors: Nielson, Daniel B., Truitt, Richard M., Ashcroft, Benjamin N.
• Primary Examiner(s): Bergin, James S
• Application Number:
  US14/750,523
• Publication Number:
  US 20150292846A1
• Time in Patent Office: 1,069 Days
• Field of Search: 102364, 102473, 86 51- 53
• CPC Class Codes: C06B 45/00 Compositions or products which are defined by structure or arrangement of component of product explosive charges of particular form or shape F42B1/00, F42B3/00
• CPC Class Codes: C06B 45/12 having contiguous layers or zones
• CPC Class Codes: F42B 12/06 with hard or heavy core; Kinetic energy penetrators F42B12/16, F42B12/74 take precedence
• CPC Class Codes: F42B 12/204 for attacking structures, e.g. specific buildings or fortifications, ships or vehicles
• CPC Class Codes: F42B 12/36 for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
• CPC Class Codes: F42B 12/44 of incendiary type F42B12/46 takes precedence
• CPC Class Codes: F42B 12/74 of the core or solid body
• CPC Class Codes: F42B 33/00 Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor F42B5/188 takes precedence; manufacturing processes for hollow charges F42B1/036; manufacture of blasting cartridge initiators F42B3/195
• CPC Class Codes: F42B 33/001 Devices or processes for assembling ammunition, cartridges or cartridge elements from parts
• CPC Class Codes: F42B 5/02 Cartridges, i.e. cases with charge and missile

Abstract

A munition, such as a projectile formed of at least one reactive material. 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, or the reactive material may be extruded into a near-net shape and then machined into the desired shape.

Claims

1. An article of ordnance, comprising:

a cartridge casing;

a propellant composition disposed within the cartridge casing; and

a projectile coupled to the cartridge casing, the projectile comprising;

a body portion comprising a reactive material composition;

a jacket around the reactive material composition, an intended leading tip and surfaces of sides of the projectile extending from the intended leading tip of the projectile toward the jacket being exposed and comprising the reactive material composition; and

a core member substantially surrounded by the reactive material composition.

2. The article of ordnance of claim 1, further comprising a primer in communication with the propellant composition.

3. The article of ordnance of claim 1, wherein the core member comprises another reactive material composition.

4. The article of ordnance of claim 1, wherein the reactive material composition comprises a plurality of reactive material compositions, wherein at least one of the reactive material compositions is more sensitive to initiation upon impact than is at least another of the reactive material compositions.

5. The article of ordnance of claim 1, wherein the jacket extends further along the reactive material composition than the core member extends within the reactive material composition.

6. The article of ordnance of claim 5, wherein the core member comprises a pointed end oriented a same direction as the intended leading tip of the projectile.

7. The article of ordnance of claim 1, wherein the jacket comprises copper or steel.

8. The article of ordnance of claim 1, wherein the core member comprises a penetrating member.

9. The article of ordnance of claim 1, wherein the core member comprises tungsten.

10. The article of ordnance of claim 1, wherein the core member is denser than the reactive material composition.

11. The article of ordnance of claim 1, wherein the reactive material composition is more sensitive to initiation upon impact than the core member.

12. The article of ordnance of claim 1, wherein the reactive material composition of the intended leading tip of the projectile comprises at least one fuel, at least one oxidizer, and at least one binder.

13. The article of ordnance of claim 12, wherein the reactive material composition comprises a thermitic material.

14. A method of forming an article of ordnance, the method comprising:

disposing a propellant composition within a cartridge casing;

forming a projectile, forming the projectile comprising;

disposing a core member within a reactive material composition of a body portion of the projectile, the core member substantially surrounded by the reactive material composition; and

forming a jacket around the reactive material composition with an intended leading tip and sides of the projectile extending from the intended leading tip toward the jacket being exposed, the intended leading tip comprising the reactive material composition; and

coupling the projectile to the cartridge casing.

15. The method of claim 14, further comprising casting the reactive material composition in a mold and curing the reactive material composition.

16. The method of claim 14, wherein disposing a core member within a reactive material composition comprises disposing a core member comprising tungsten within the reactive material composition.

17. The method of claim 14, wherein disposing a core member within a reactive material composition comprises disposing a core member comprising another reactive material composition within the reactive material composition.

18. The method of claim 14, wherein disposing a core member within a reactive material composition comprises disposing a core member that is denser than the reactive material composition within the reactive material composition.

19. An article of ordnance, comprising:

a propellant disposed within a cartridge casing;

a primer coupled to the propellant and configured to ignite the propellant; and

a projectile coupled to the cartridge casing, the projectile comprising;

a core member substantially surrounded by a reactive material composition; and

a jacket around the reactive material composition, the reactive material composition comprising an exposed portion at an intended leading tip of the projectile and at surfaces of sides extending from the intended leading tip toward the jacket.