METHOD FOR SIMPLE OPTICAL AUTONOMOUS REFUELING SYSTEM

• US 20100217526A1
• Filed: 02/26/2009
• Published: 08/26/2010
• Est. Priority Date: 02/26/2009
• Status: Abandoned Application

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Jones, Michael I., Dawson, Marcus D., McElveen, R. Parker
• Application Number:
  US12/393,144
• Publication Number:
  US 20100217526A1
• Time in Patent Office: Days
• US Class Current: 701/300
• CPC Class Codes: B64D 39/00 Refuelling during flight filling or emptying fuel tanks B64D37/14
• CPC Class Codes: G05D 1/104 involving a plurality of aircrafts, e.g. formation flying traffic control systems for aircraft G08G5/00

Abstract

The present inventions provides for a system and method to facilitate dynamic spatial positioning of a second vehicle in relation to a first vehicle autonomously. The system includes a first vehicle, a second vehicle, a light pattern located on the first vehicle, an imaging system, and a processor. The imaging system is located on the second vehicle and is operable to receive a signal from the light pattern while having a clear line of sight with the light pattern. Furthermore, the processor is in communication with the imaging system, such that the processor is operable to determine the spatial positioning between the first vehicle and the second vehicle. Additionally, the processor is further operable to communicate instructions to the second vehicle, such that the second vehicle can achieve the desired spatial positioning autonomously.

Claims

1. An automatic positioning system to facilitate dynamic spatial positioning of a first object with a second object, the positioning system comprising:

a first object;

a second object;

a light pattern located on the first object, wherein the light pattern comprises a distinct geometric pattern of lighting elements;

an imaging system located on the second object, wherein the imaging system is operable to receive a light signal from the lighting elements while having a clear line of sight with the light elements; and

a processor in communication with the imaging system, wherein the processor is operable to determine the spatial positioning between the first object and the second object, the processor further operable to communicate instructions to the second object, such that the second object can achieve the desired spatial positioning autonomously.

2. The positioning system of claim 1, wherein the first object and the second object are both aircrafts.

3. The positioning system of claim 2, wherein one of said aircraft'"'"'s is a tanker aircraft and the other said aircraft is a receiver aircraft.

4. The positioning system of claim 3, wherein the tanker aircraft further comprises a hose and drogue and the receiver aircraft further comprises a probe, wherein the light pattern is positioned on the drogue and the imaging system is positioned on a forward, upper surface of the receiver aircraft.

5. The positioning system of claim 3, wherein the tanker aircraft further comprises a boom and the receiver aircraft further comprises a receptacle, wherein the light pattern is positioned on an aft portion of the tanker aircraft and the imaging system is positioned on a forward, upper surface of the receiver aircraft.

6. The positioning system of claim 2, wherein the lighting elements are selected from the group consisting of light emitting diodes, glassbead reflectors, fiber optics, and combinations thereof.

7. The positioning system of claim 2, wherein the lighting elements are operable to emit light in a specified wavelength range, wherein the lighting elements are selected from the group consisting of light emitting diodes, fiber optics, and combinations thereof.

8. The positioning system of claim 7, wherein the imaging system further comprises a high-resolution camera lens operable to only receive light signals within the specified wavelength range of the lighting elements.

9. The positioning system of claim 8, wherein the specified wavelength range is 0.75 to 1.4 μ

m.

10. The positioning system of claim 8, wherein the specified wavelength range is 0.8 to 0.9 μ

m.

11. The positioning system of claim 2, wherein the light pattern further comprises lenses, the lenses operable to limit the solid angle of radiation from the lighting elements.

12. The positioning system of claim 2, wherein the processor determines the spatial positioning of said aircrafts using a centroiding algorithm.

13. An automatic aircraft positioning system to facilitate in-flight re-fueling of a receiver aircraft by a tanker aircraft, the positioning system comprising:

a receiver aircraft;

a tanker aircraft;

a plurality of lighting elements located on the tanker aircraft, the lighting elements operable to transmit light within a specified wavelength range, the lighting elements being spaced relative to each other in a selected geometric pattern;

an imaging system located on the receiver aircraft, wherein the imaging system has a camera lens operable to receive light only within the specified wavelength range from the plurality of lighting elements while having a clear line of sight with the plurality of lighting elements;

a processor in communication with the imaging system, wherein the processor is operable to determine the spatial positioning between the plurality of lighting elements and the receiver aircraft by comparing an observed pattern to the selected geometric pattern as to whether the observed pattern and the selected geometric pattern align, the processor further operable to communicate instructions to the receiver aircraft, such that the receiver aircraft can achieve the desired in-flight spatial positioning autonomously.

14. The automatic aircraft positioning system of claim 13, wherein the plurality of lighting elements farther comprise lenses, the lenses operable to limit the solid angle of radiation from the plurality of lighting elements.

15. The automatic aircraft positioning system of claim 13, wherein the tanker aircraft further comprises a hose and drogue and the receiver aircraft further comprises a probe.

16. The automatic aircraft positioning system of claim 13, wherein the tanker aircraft further comprises a boom and the receiver aircraft further comprises a receptacle.

17. A method to facilitate dynamic in-flight spatial positioning of a first aircraft with a second aircraft the method comprising:

transmitting a light image from a lighting system located on the first aircraft;

receiving the light image from the first aircraft using an imaging system on a second aircraft, wherein there is a clear line of sight between the imaging system and the lighting system;

determining the spatial positioning between the lighting system and the second aircraft using a processor in communication with the imaging system; and

communicating instructions to the second aircraft, such that the second aircraft can achieve the desired in-flight spatial positioning autonomously.

18. The method of claim 17, wherein the step of transmitting a light image is conducted using a light source, wherein the light source is selected from the group consisting of light emitting diodes, fiber optics, and combinations thereof, wherein the light source is configured to emit light only within a specified wavelength range, and wherein the imaging system comprises a camera lens operable to filter out all wavelengths of light not within the specified wavelength range.

19. The method, of claim 17, further comprising limiting the solid angle of radiation from the light source.

20. The method of claim 17, wherein the processor determines the spatial positioning between the first aircraft and the second aircraft using a centroiding algorithm.