How Satellite Swarms Keep Their Solar Panels and Antennas Pointed Correctly

A system for managing large satellite arrays in orbit that balances the need to point solar panels at the sun and antennas at the Earth while keeping the structure stable.

What it covers

This patent describes a way to control a large, connected group of satellites in space that act as a single, giant antenna. Because these satellites are linked, they must constantly adjust their position to keep their solar panels facing the sun for power and their antennas facing the Earth for communication. The system uses a central computer to calculate the perfect angle for the entire array. It then uses actuators—like spinning wheels or magnets—to move the array while ensuring that the forces acting on it, such as gravity pulling on different parts of the structure, are perfectly balanced so the array doesn't spin out of control.

What it doesn't cover

• —Does not cover individual, standalone satellites that are not mechanically coupled into a phased array.
• —Does not cover systems that rely solely on ground-based control without an onboard processing device for orientation.
• —Does not cover antenna systems that do not simultaneously optimize for both solar exposure and Earth-facing orientation.

The clever bit

The system uses the momentum of the satellite's own internal spinning wheels to create a gyroscopic effect that cancels out the natural twisting force (gravity gradient torque) caused by the Earth's gravity acting on a large, non-uniform object in orbit.

Why it matters

As companies launch massive constellations of satellites to provide global internet, managing the physical stability of these large structures becomes a major engineering hurdle. This patent addresses the specific problem of 'torque equilibrium,' which prevents these large, flat arrays from tumbling due to the uneven pull of Earth's gravity, a critical requirement for maintaining high-speed data links.

Real-world examples

• 1.Large-scale satellite internet constellations
• 2.Space-based phased array communication platforms
• 3.Modular satellite swarms in Low Earth Orbit