Maintaining a stable phase difference between multiple tethered vehicles lifting a payload
First Claim
1. A system to maintain a target phase difference comprising:
- an interface configured to receive telemetry information for a reference aircraft moving in a first periodic trajectory; and
a processor configured to;
determine a phase difference between a primary aircraft and the reference aircraft with respect to the first periodic trajectory, wherein the primary aircraft and the reference aircraft are configured to lift a common payload;
determine a variance in the phase difference between the primary aircraft and the reference aircraft from the target phase difference;
determine a new trajectory for the primary aircraft that decreases the variance in the phase difference with respect to the first periodic trajectory; and
cause the primary aircraft to move in the new trajectory, wherein the new trajectory is a tighter circle and a higher altitude relative to a trajectory of the reference aircraft.
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Accused Products
Abstract
A system to maintain a phase difference is disclosed. Two or more aircraft fly in a continuous periodic trajectory. The system maintains a phase difference between the two or more aircraft. Telemetry information for a reference aircraft moving in a first periodic trajectory is received. A phase difference between a primary aircraft and the reference aircraft with respect to the first periodic trajectory is determined. A variance in the phase difference between the primary aircraft and the reference aircraft from the target phase difference is determined. A new trajectory for the primary aircraft that decreases the variance in the phase difference with respect to the new periodic trajectory is determined, and the primary aircraft is maneuvered to follow the new trajectory.
22 Citations
19 Claims
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1. A system to maintain a target phase difference comprising:
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an interface configured to receive telemetry information for a reference aircraft moving in a first periodic trajectory; and a processor configured to; determine a phase difference between a primary aircraft and the reference aircraft with respect to the first periodic trajectory, wherein the primary aircraft and the reference aircraft are configured to lift a common payload; determine a variance in the phase difference between the primary aircraft and the reference aircraft from the target phase difference; determine a new trajectory for the primary aircraft that decreases the variance in the phase difference with respect to the first periodic trajectory; and cause the primary aircraft to move in the new trajectory, wherein the new trajectory is a tighter circle and a higher altitude relative to a trajectory of the reference aircraft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method to maintain a target phase difference, comprising:
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receiving telemetry information for a reference aircraft moving in a first periodic trajectory; determining, using a processor, a phase difference between a primary aircraft and the reference aircraft with respect to the first periodic trajectory, wherein the primary aircraft and the reference aircraft are configured to lift a common payload; determining a variance in the phase difference between the primary aircraft and the reference aircraft from the target phase difference; determining a new trajectory for the primary aircraft that decreases the variance in the phase difference with respect to the first periodic trajectory; and causing the primary aircraft to move in the new trajectory, wherein the new trajectory is a tighter circle and a higher altitude relative to a trajectory of the reference aircraft.
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19. A computer program product for maintaining a target phase difference, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for:
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receiving telemetry information for a reference aircraft moving in a first periodic trajectory; determining a phase difference between a primary aircraft and the reference aircraft with respect to the first periodic trajectory, wherein the primary aircraft and the reference aircraft are configured to lift a common payload; determining a variance in the phase difference between the primary aircraft and the reference aircraft from the target phase difference; determining a new trajectory for the primary aircraft that decreases the variance in the phase difference with respect to the first periodic trajectory; and causing the primary aircraft to move in the new trajectory, wherein the new trajectory is a tighter circle and a higher altitude relative to a trajectory of the reference aircraft.
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Specification