UK developing first robotic welder to fix satellites in space

The UK is developing its first robotic welding technology designed specifically for use in space, aiming to extend the operational life of satellites and support a sustainable space economy. Led by the University of Leicester in partnership with welding specialist TWI Ltd, the ISPARK (Intelligent SPace Arc-welding Robotic Kit) project has secured £560,000 in funding, primarily from the UK Space Agency’s National Space Innovation Programme. This robotic arc-welding system will be capable of performing repairs, joining, and manufacturing tasks in the harsh conditions of space, including vacuum, microgravity, and thermal instability, overcoming challenges that have historically made in-orbit repair rare and costly. The project leverages digital-twin modeling to simulate space conditions on Earth, ensuring the welding technology is rigorously tested and validated before deployment. ISPARK represents a significant scientific and engineering milestone, promising to reduce satellite waste, extend mission lifetimes, and enable the construction of larger and more complex orbital structures such as advanced telescopes and future space