Failed Rescue Mission Yields Critical Space Tech Data

The LINK spacecraft, designed to rescue NASA’s Swift Observatory from a decaying orbit, has officially failed in its primary objective. Due to a thruster control issue that caused the probe to spin uncontrollably, it could not complete the complex maneuver required to grapple and boost Swift to a higher altitude. Both spacecraft are now expected to burn up in Earth's atmosphere within the next few weeks.

Despite the loss of the mission, engineers at Katalyst Space are not writing off the effort. By successfully firing its electric propulsion thrusters and deploying its robotic arms, LINK achieved a close flyby of Swift. This interaction allowed the team to gather essential data on satellite servicing technologies, turning a failed rescue into a significant scientific and technical achievement.

Urgent Timeline for Orbital Rescue

The mission was conceived as a last-ditch effort after Swift’s orbit began degrading faster than expected due to increased solar activity. Katalyst Space had less than a year to design, build, and test the specialized probe. Launched in July on a Pegasus XL rocket, LINK was intended to catch Swift and raise its altitude to prevent atmospheric reentry.

However, three weeks after reaching space, the spacecraft began to spin due to a malfunction in its thruster control system. This instability made the precise docking maneuver impossible. As reported by GN auto tech/science: space discovery, the failure leaves both satellites on a short track toward destruction, with Swift expected to reenter before the end of the year.

Successful Tests Despite Failure

Although the rescue was abandoned, LINK managed to adjust its orbit to fly within 12 to 15 kilometers of Swift. During this close approach, the probe successfully tested all three of its electric propulsion thrusters. It also deployed its three robotic arms, which would have been used to physically grapple the observatory.

These tests are crucial for validating the hardware and software needed for future commercial satellite servicing missions. The ability to maneuver precisely near another spacecraft and deploy robotic arms is a key step toward making orbital maintenance a viable industry, even if this specific attempt to save Swift did not succeed.

Final Days of Swift Observatory

NASA has turned back on two of Swift’s three science instruments, the X-ray Telescope and the Ultraviolet/Optical Telescope, which had been shut down in February to reduce drag. With its orbit doomed, the observatory will use its remaining time to study high-energy phenomena like gamma-ray bursts and black-hole ejections.

Swift has been active since 2004, providing decades of data on the universe's most violent events. While the spacecraft will soon meet its end in the atmosphere, its final days are being used to maximize scientific return. Meanwhile, Katalyst and NASA continue to analyze the data from LINK to improve future space-based service capabilities.