Rolls-Royce reveals nuclear Space Micro-Reactor model

The Space Micro-Reactor is intended to act as a continuous source of off-Earth power, potentially enabling a future Moon base or helping to propel the spacecraft of tomorrow. Though not expected to be mission-ready until the early 2030s, Rolls-Royce displayed a model incorporating its early work on the reactor at last week’s UK Space Conference in Belfast.

The project received £2.9m of UK Space Agency funding in March 2023. Since then, the company’s Novel Nuclear team has been working on the design of the Space Micro-Reactor, including areas such as fuel type, heat transfer and electricity generation. According to Rolls-Royce, the Novel Nuclear team worked with aerospace colleagues in Bristol on the power conversion component of the reactor. External collaborators so far have included Oxford University, Bangor University, Loughborough University, The Welding Institute and the Nuclear Advanced Manufacturing Research Centre (NAMRC).

“The funding from UK Space Agency has allowed the Rolls-Royce Micro-Reactor programme to work collaboratively with the UK Space Agency, UK academic institutions and industry partners to showcase the best of UK innovation and knowledge in space,” said Abi Clayton, director of Future Programmes for Rolls-Royce.