Command Communications Established with Starlink Satellites

Mission managers have established command communications with all four of NASA’s Starling CubeSats. The spacecraft are progressing through payload and propulsion tests, the final stage of a pre-operations checklist called commissioning.

The Starling spacecraft – which project team members nicknamed Blinky, Pinky, Inky, and Clyde – are part of an ambitious test to develop self-coordinating robotic swarms for space research and exploration.

Progress so far has been as expected for three of the four spacecraft – Pinky, Inky, and Clyde. An initial command communications issue with Blinky was addressed by updating estimates of its orbital position and instructing the satellite to better align its antennas with ground station receivers. Operators have achieved operational two-way communications with all Starling units and are still investigating the root cause of the issue.

Command Communications Link One Facet of Commissioning

In addition, data analysis of Blinky’s onboard attitude control system, which manages the spacecraft’s orientation, showed that it was having to work to counteract a disturbance. Initial troubleshooting suggested this was likely connected to a propulsion system leak, which was subsequently remediated. Operators are working to better understand the issue and how it might impact the mission.

After this final stage of commissioning, the Starling spacecraft will begin a procedure called a “drift arrest maneuver,” adjusting the orbital positions of each craft to bring them into proper alignment to begin testing swarm activities.

The Starling Cubesats were launched on Rocket Lab's 'Baby Come Back' mission from New Zealand in July. Once positioned in orbit around Earth and spaced about 40 miles / 64 km apart, Starling’s spacecraft will demonstrate the ability to autonomously fly together while keeping track of each other’s relative positions and trajectories. They also will demonstrate the ability to plan and execute activities as a group, without guidance from mission controllers, including responding to new information from onboard sensors. Starling’s spacecraft will also demonstrate creating and maintaining an inter-spacecraft communications network that automatically adjusts to changing conditions. The Starling mission will test whether the technologies work as expected, what their limitations are, and what developments are still needed for CubeSat swarms to be successful.

(Source: NASA news release and previous reporting. Images provided and from file)