Micro-satellite and satellite formation for inverse and distributed proximity operations

• US 6,845,303 B1
• Filed: 11/05/2002
• Issued: 01/18/2005
• Est. Priority Date: 11/05/2002
• Status: Expired due to Fees

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Byler, Eric Alan
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): Broadhead, Brian J
• Application Number:
  US10/287,683
• Time in Patent Office: 805 Days
• Field of Search: 701/2, 701/7, 701/11, 701/13, 701/14, 701/300, 701/302, 244/3.14, 244/3.12, 244/3.15, 244/3.19, 244/161, 244/176, 244/177, 244/189
• US Class Current: 701/13
• CPC Class Codes: B64D 39/00 Refuelling during flight filling or emptying fuel tanks B64D37/14
• CPC Class Codes: B64G 1/1078 Maintenance satellites refueling in space B64G1/4024
• CPC Class Codes: B64G 1/1085 Swarms and constellations
• CPC Class Codes: B64G 1/401 Liquid propellant rocket engines Ion or plasma engines B64G1/413; Arcjets and other resistojets B64G1/415
• CPC Class Codes: B64G 1/646 Docking or rendezvous systems refueling in space B64G1/4024
• CPC Class Codes: G05D 1/12 Target-seeking control

Abstract

A method and apparatus for conducting proximity operations is disclosed. The method called inverser proximity operations includes maneuvering an active vehicle into general proximity to a target vehicle, transmitting from the target vehicle to the active vehicle data representing relative position and velocity between the target vehicle and the active vehicle, and maneuvering the active vehicle in accordance with the data to effect a desired proximity operation. Another method called distributed proximity operations includes maneuvering a carrier vehicle into general proximity to a target vehicle, releasing one or more active vehicles from the carrier vehicle, transmitting from the carrier vehicle to the active vehicle(s) data representing relative position and velocity between the target vehicle and the active vehicle, and maneuvering the active vehicle(s) in accordance with the data to effect a desired proximity operation. The proximity operations are similarly suitable for aeronautical systems, such as when using an active aircraft to re-fuel a target aircraft, such as a drone. Whether for space, air, or other environments, the proximity operations described can be used for re-fueling, repairing, and replacing components and/or systems.

Claims

1. A method of docking with a target vehicle comprising the steps of:

maneuvering an active vehicle into general proximity to a the target vehicle;

transmitting from the target vehicle to the active vehicle data representing relative position and velocity between the target vehicle and the active vehicle; and

maneuvering the active vehicle in accordance with the data to dock with the target vehicle.

2. A method according to claim 1, wherein the step of maneuvering the active vehicle includes processing the data into command signals, and operating at least one control device on the active vehicle until the docking is substantially complete.

3. A method according to claim 2, wherein the target vehicle is a first satellite and the active vehicle is a second satellite, the at least one control device includes at least one thruster disposed on the second satellite, and the step of maneuvering the active vehicle includes throttling the at least one thruster in accordance with the command signals.

4. A method according to claim 2, wherein the target vehicle is a first aircraft and the active vehicle is a second aircraft, the at least one control device includes at least one control surface, and the step of maneuvering the active vehicle includes moving the at least one control surface in accordance with the command signals.

5. An active vehicle for docking with a target vehicle, comprising:

first means for maneuvering the active vehicle into general proximity to the target vehicle;

sensor means, connected to the target vehicle, for transmitting from the target vehicle to the active vehicle data representing relative position and velocity between the target vehicle and the active vehicle; and

second means for maneuvering the active vehicle in accordance with the data to dock with the target vehicle.

6. An active vehicle according to claim 5, wherein the first maneuvering means includes means for propelling the active vehicle into general proximity to the target vehicle.

7. An active vehicle according to claim 6, wherein the general proximity is substantially a distance within which the sensor means is capable of providing relative position and velocity data.

8. An active vehicle according to claim 7, wherein the distance is approximately one to one hundred kilometers.

9. An active vehicle according to claim 5, wherein the sensor means is a payload instrument of the target vehicle.

10. An active vehicle according to claim 5, wherein the second maneuvering means includes a transmit antenna coupled to the target vehicle, and a receive antenna coupled to the active vehicle, wherein the position and velocity data is transmitted from the target vehicle to the active vehicle.

11. An active vehicle according to claim 5, wherein the active vehicle and the target vehicle are deployable in space.

12. An active vehicle according to claim 11, wherein the active vehicle and the target vehicle are satellites.

13. An active vehicle according to claim 5, wherein the active vehicle and the target vehicle are unmanned aircraft.

14. An active vehicle according to claim 5, wherein the active vehicle carries at least one of a replacement subsystem and fuel.

15. An active vehicle according to claim 14, wherein the replacement subsystem is selected from the group consisting of an instrument, an instrumentation package, an electrical power system or component thereof, an attitude control system or component thereof, a processor or component thereof, and a propulsion system or component thereof.

16. A system for re-fueling an unmanned aircraft, comprising:

a service aircraft having a receive antenna and a transferable supply of fuel;

a sensor disposed on the unmanned aircraft for generating data indicative of relative position between the service aircraft and the unmanned aircraft;

a transmit antenna disposed on the unmanned aircraft for transmitting the data from the unmanned aircraft to the service aircraft; and

a propulsion and control system associated with the service aircraft, for maneuvering the service aircraft into a docking position with respect to the unmanned aircraft in response to the data.

17. A method of docking with a target vehicle comprising the steps of:

maneuvering a control vehicle into general proximity to the target vehicle;

deploying at least one active vehicle from the control vehicle;

transmitting from the control vehicle to the active vehicle data representing relative position and velocity between the target vehicle and the active vehicle; and

maneuvering the active vehicle in accordance with the data to dock with the target vehicle.

18. A method according to claim 17, wherein the step of maneuvering the active vehicle includes processing the data into command signals, and operating at least one control device on the target vehicle until the docking is substantially complete.

19. A method according to claim 18, wherein the target vehicle is a first satellite and the active vehicle is a second satellite, the at least one control device includes at least one thruster disposed on the second satellite, and the step of maneuvering the active vehicle includes throttling the at least one thruster in accordance with the command signals.

20. A method according to claim 18, wherein the target vehicle is a first aircraft and the active vehicle is a second aircraft, the at least one control device includes at least one control surface, and the step of maneuvering the active vehicle includes moving the at least one control surface in accordance with the command signals.

21. A system for docking with a target vehicle comprising:

a control vehicle adapted to be maneuvered into general proximity to a the target vehicle;

at least one active vehicle deployable into general proximity to the target vehicle;

a sensor, located on the control vehicle, for transmitting from the control vehicle to the active vehicle data representing relative position and velocity between the target vehicle and the active vehicle; and

means for maneuvering the active vehicle in accordance with the data to dock with the target vehicle.

22. A system according to claim 21, further comprising a transmit antenna connected to the control vehicle, and a receive antenna connected to the active vehicle, wherein the data is transmitted from the control vehicle to the active vehicle.

23. A system according to claim 22, wherein the maneuvering means includes a propulsion system for moving the active vehicle in accordance with the data to bring the active vehicle towards a docking position with respect to the target vehicle.

24. A system according to claim 23, wherein the target vehicle is a satellite, the control vehicle is a space vehicle, and the at least one active vehicle is a pod detachably coupled to the space vehicle.

25. A system according to claim 23, wherein the at least one pod carries at least one of a replacement system or a component of a system.

26. A system according to claim 25, wherein the replacement system and component of a system are selected from the group consisting of a processor or component thereof, an attitude control system or component thereof, a propulsion system or component thereof, an electrical power system or component thereof.