Mine neutralization device

• US 6,359,834 B1
• Filed: 06/04/2001
• Issued: 03/19/2002
• Est. Priority Date: 01/29/2001
• Status: Expired due to Fees

• Current Assignee: the united states of america as represented by the secretary of the navy
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: English, Thomas P.
• Primary Examiner(s): Pihulic, Daniel T.
• Application Number:
  US09/874,461
• Time in Patent Office: 288 Days
• Field of Search: 367/133, 367/134, 367/131, 89/11.3, 244/3.12, 114/316, 114/328, 114/330, 114/331, 114/338
• US Class Current: 367/133
• CPC Class Codes: F41G 7/228 using acoustic waves, e.g. for torpedoes
• CPC Class Codes: F41G 7/346 using global navigation satellite systems, e.g. GPS, GALILEO, GLONASS
• CPC Class Codes: G01S 15/86 Combinations of sonar systems with lidar systems; Combinations of sonar systems with systems not using wave reflection
• CPC Class Codes: G01S 19/18 Military applications
• CPC Class Codes: G01S 19/36 relating to the receiver frond end

Abstract

A mine neutralization device (MND) is deployed from launch platform, such as an aircraft or surface craft, and travels several miles underwater to destroy a mine. Optical and/or acoustic command signals are coupled to the MND through an optical fiber and ambient water to control the MND on its way to the mine. The MND has a visible light system to illuminate the region around the MND, a camera system to provide optical data signals, and a sonar system to provide acoustic data signals transmitted to the launch platform. The optical and acoustic data signals are representative of images of features in the region to permit control signals from the platform to navigate the MND along the marine topography until the mine is located and identified. Once the mine is located and identified, explosives aboard the MND are detonated to destroy the mine.

Claims

1. A method of neutralizing a mine comprising the steps:

providing a submersible having an elongate cylindrically-shaped pressure-hull housing mounting a plurality of longitudinally extending pylons thereon;

propelling said submersible through ambient water from a launch platform by motor-driven propellers disposed aft on said pylons;

deploying an optical fiber from a spool of optical fiber on said housing during transit through said ambient water;

illuminating an area forward of said housing with visible light radiated from a source of visible light mounted forward on one of said pylons;

receiving reflected portions of said visible light to provide representative optical data signals in a camera system mounted forward on one of said pylons;

projecting acoustic energy from a sonar system mounted forward on one of said pylons through said ambient water;

receiving reflected portions of said projected acoustic energy by said sonar system to provide representative acoustic data signals;

processing signals in an electronics section in said housing to generate internal control signals therein;

coupling said internal control signals to a guidance and control section in said housing;

generating actuating signals in said guidance and control section in response to said internal control signals;

coupling said actuating signals to effect displacement of motors connected to a plurality of fins disposed aft on said housing, a vertical thruster section extending through said housing, and said motor-driven propellers;

steering said submersible in said ambient water to a mine by said fins, said vertical thruster section and said propellers by said actuating signals; and

detonating a warhead in said housing to destroy said mine.

2. A method according to claim 1 further comprising the step of:

transmitting optical control signals from said platform to said submersible and said optical data signals from said submersible to said platform through said optical fiber.

3. A method according to claim 2 further comprising the step of:

transmitting acoustic command signals from said launch platform to said sonar system on said submersible and said acoustic data signals from said sonar system on said submersible to said launch platform through said ambient water.

4. A method according to claim 3 wherein said step of processing by said electronics section includes the steps of:

receiving said optical data signals from said camera system, said acoustic data signals from said sonar system, said acoustic command signals received by said sonar system, and said optical command signals received over said optical fiber; and

creating said internal control signals therefrom.

5. A method according to claim 4 wherein said step of illuminating includes the step of:

radiating visible light onto said mine and features of marine topography at the bottom of said ambient water to effect visible illumination thereof; and

said step of projecting includes the step of;

ensonifying said mines and said features with acoustic energy.

6. A method according to claim 5 wherein said step of detonating comprises the step of:

contacting a contact detonator in said housing with said mine to detonate said warhead.

7. A method according to claim 5 wherein said step of detonating comprises the step of:

detonating a proximity detonator in said warhead at a lethal proximity of said mine to detonate said warhead.

8. A method according to claim 6 further comprising the step of:

operating said electronics section and guidance and control section in a programmed automatic mode of guidance to said mine and detonation of said warhead at said mine.

9. A method according to claim 6 further including the step of:

operating said electronics section and guidance and control section in a manual mode of operation by an operator in said launch platform sending command signals to transit to said target and detonate said warhead section.

10. A unmanned device for neutralizing a mine comprising:

an elongate cylindrically-shaped pressure-hull housing having a plurality of pylons mounted to longitudinally extend thereon;

a warhead section in said housing;

a spool of optical fiber disposed aft on said housing to deploy optical fiber from said housing during transit through ambient water from a launch platform;

motor-driven propellers disposed aft on pylons on said housing radially outwardly from said spool of optical fiber to propel said housing through said ambient water;

a plurality of fins disposed aft on said housing;

a vertical thruster section extending through said housing having a propeller assembly;

a source of visible light mounted forward on one of said pylons to radiate visible light to illuminate an area in front of said housing in said ambient water;

a camera system mounted forward on one of said pylons to receive reflected portions of said radiated visible light and to provide representative optical data signals;

a sonar system mounted forward on one of said pylons to project acoustic energy signals and receive reflected portions of said projected acoustic energy to provide representative acoustic data signals;

an electronics section in said housing coupled to receive said representative optical data signals and acoustic data signals;

a guidance and control section in said housing coupled to said electronics section and to said fins, said motor driven propellers, and said vertical thruster, said motor driven propeller, said fins, and said electronics section, said fins, said motor driven propellers, and said vertical thruster section, said fins, said motor driven propellers, and said propeller assembly being controlled by said electronics section and said guidance and control section to steer through ambient water during transit to a mine and to detonate said warhead section at said mine.

11. A device according to claim 10 wherein said optical fiber receives optical control signals from and transmits said optical data signals to said launch platform to permit optical communication therethrough, and said sonar system receives acoustic command signals from and transmits said acoustic data signals to said launch platform to permit acoustic communication through said ambient water.

12. A device according to claim 11 wherein said electronics section has processing and logic modules coupled to receive said optical data signals from said camera system and said acoustic data signals from said sonar system to create internal control signals, and said electronics section has processing, logic and transceiver modules responsive to said acoustic command signals received by said sonar system and optical command signals received over said optical fiber to create internal control signals.

13. A device according to claim 12 wherein said guidance and control section generates actuating signals in response to internal control signals and said actuating signals are coupled to effect displacement of motor connected to said fins, said tunnel thruster section, and said motor driven propellers to effect responsive displacements thereof.

14. A device according to claim 13 wherein said radiated visible light radiates to visibly illuminate said mine and said projected acoustic energy acoustically ensonifies said mine.

15. A device according to claim 14 wherein said radiated visible light radiates to visibly illuminate features of marine topography at the bottom of said ambient water and said projected acoustic energy acoustically ensonifies said features.

16. A device according to claim 15 further comprising:

a contact detonator forward in said housing to detonate said warhead section upon contact with said mine.

17. A device according to claim 16 further comprising:

a proximity detonator in said warhead section preset to detonate

said warhead section at a lethal proximity of said mine.

18. A device according to claim 17 wherein said electronics section and guidance and control section are operable in a programmed automatic mode of guidance to detonate said warhead section at said mine, and said electronics section and guidance and control section are operable in a manual mode of operation by an operator in said launch platform sending command signals to transit to said target and detonate said warhead section.