Methods and apparatus for countering a projectile

• US 7,946,207 B1
• Filed: 06/13/2008
• Issued: 05/24/2011
• Est. Priority Date: 06/14/2007
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Vukobratovich, Daniel, Melonis, Daniel R., Jenia, Justin C., Porter, James L., Taylor, Byron B.
• Primary Examiner(s): Lee; Benjamin P
• Application Number:
  US12/138,955
• Publication Number:
  US 20110114726A1
• Time in Patent Office: 1,075 Days
• Field of Search: 89/11, 89/11.1, 342/54, 342/22, 102/201
• US Class Current: 89/1.11
• CPC Class Codes: F41G 5/08 Ground-based tracking-systems for aerial targets
• CPC Class Codes: F41H 13/0062 causing structural damage to the target

Abstract

Methods and apparatus for countering a projectile according to various aspects of the present invention may operate in conjunction with a countermeasure system. The countermeasure system may comprise a beam source adapted to generate an electromagnetic beam. The countermeasure system may further include a beam control system adapted to aim the electromagnetic beam at the projectile according to a fire control solution. The beam heats at least a portion of the projectile to a disruption temperature to deflagrate the projectile.

Claims

1. A countermeasure system for countering a projectile according to a fire control solution, comprising:

a beam source adapted to generate an electromagnetic beam; and

a beam control system configured

to aim the electromagnetic beam at the projectile according to the fire control solution, and

to control and maintain a spot size of the electromagnetic beam on the projectile so that the spot size is approximately the same size as the projectile,

wherein the electromagnetic beam is configured to heat the projectile until at least a portion of the projectile reaches a disruption temperature to deflagrate the projectile.

2. A countermeasure system according to claim 1, further comprising:

a detection system configured to generate a detection signal corresponding to a position of the projectile; and

a tracking system responsive to the detection system and adapted to generate the fire control solution according to the detection signal.

3. A countermeasure system according to claim 1, wherein the bean source comprises a solid state laser.

4. A counter countermeasure system according to claim 3, wherein the solid state laser comprises a plurality of fiber lasers.

5. A countermeasure system according to claim 1, herein the disruption temperature is about 300°

C.

6. A countermeasure system according to claim 1, wherein the beam source is configured to maintain the beam on the projectile while the projectile is in motion.

7. A countermeasure system according to claim 1, wherein the beam source is configured to heat the projectile to cause deflagration before the projectile falls below about 100 meters above ground level.

8. An apparatus for countering a projectile, comprising:

a detection system adapted to identify a position of the projectile and generate a corresponding detection signal;

a tracking system responsive to the detection system wherein the tracking system generates a fire control solution in response to the detection signal; and

a laser system responsive to the tracking system, wherein;

the laser system generates a laser beam to intercept the projectile according to the fire control solution,

the laser system controls and maintains a spot size of the laser beam on the projectile so that the spot size is approximately the same size as the projectile, and

the laser bear heats the projectile until at least a portion of the projectile reaches a disruption temperature to deflagrate the projectile.

9. An apparatus according to claim 8, wherein the laser system comprises a solid state laser.

10. An apparatus according to claim 9, wherein the solid state laser comprises a plurality of fiber lasers.

11. An apparatus according to claim 8, wherein the disruption temperature is about 300°

C.

12. An apparatus according to claim 8, wherein the laser system is configured to maintain the beam on the projectile while the projectile is in motion.

13. An apparatus according to claim 8, wherein the laser system is configured to heat the projectile to cause deflagration before the projectile falls below about 100 meters above ground level.

14. A method for countering a projectile, comprising:

detecting the projectile;

generating a fire control solution for intercepting the projectile;

intercepting the projectile with an electromagnetic beam according to the fire control solution;

controlling and maintaining a spot size of the electromagnetic beam on the projectile so that the spot size is approximately the same size as the projectile; and

heating the projectile with the electromagnetic beam until at least a portion of the projectile reaches to a disruption temperature to deflagrate the projectile.

15. A method for countering a projectile according to claim 14, wherein the beam is generated by a solid state laser.

16. A method for countering a projectile according to claim 15, wherein the solid state laser comprises a plurality of fiber lasers.

17. A method for countering a projectile according to claim 14, wherein the disruption temperature is about 300°

C.

18. A method for countering a projectile according to claim 14, further comprising maintaining the beam on the projectile while the projectile is in motion.

19. A method for countering a projectile according to claim 14, wherein heating at the projectile comprises heating at least a portion of the projectile to the disruption temperature before the projectile falls bellow about 100 meters above ground level.