Pre and post orbit maneuver pulses to reduce flexural oscillations
AssigneeSpace Systems/Loral, Inc.
InventorPhilip Conway Hirschberg
Life of this patent
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Abstract
Techniques for performing an orbital maneuver on a spacecraft by firing a thruster include executing a first double pulse, double coast firing (DPDC) sequence with the thruster prior to the orbital maneuver, firing the thruster for a duration of the orbital maneuver, and executing a second DPDC firing sequence with the thruster subsequent to the orbital maneuver.
Claims20
A method for performing an orbital maneuver on a spacecraft by firing a thruster, the method comprising:
- executing a first double pulse, double coast firing (DPDC) sequence with the thruster prior to the orbital maneuver;
- firing the thruster for a duration of the orbital maneuver;
- and
- executing a second DPDC firing sequence with the thruster subsequent to the orbital maneuver.
A spacecraft comprising a spacecraft controller and a thruster, the spacecraft controller configured to cause the spacecraft to execute an orbital maneuver by firing a thruster, wherein the spacecraft controller:
- executes a first double pulse, double coast firing (DPDC) sequence with the thruster prior to the orbital maneuver;
- fires the thruster for a duration of the orbital maneuver;
- and
- executes a second DPDC firing sequence with the thruster subsequent to the orbital maneuver.
A non-transitory computer readable medium having software stored thereon, the software including instructions for causing a controller to:
- cause a spacecraft, the spacecraft including the controller and a thruster, to execute an orbital maneuver by firing the thruster, wherein the firing the thruster includes:
- executing a first double pulse, double coast firing (DPDC) sequence with the thruster prior to the orbital maneuver;
- firing the thruster for a duration of the orbital maneuver;
- and
- executing a second DPDC firing sequence with the thruster subsequent to the orbital maneuver.
Dependencies are inferred from the claim text.