Neumann Drive successfully completes first on-orbit test aboard SpIRIT

Neumann Space and the University of Melbourne have announced successful completion of the first in a series of on-orbit tests of the Neumann Drive, a novel electric propulsion system based on solid metal propellants, and one of a number of Australian-made space technologies integrated onto the SpIRIT nanosatellite launched in December last year.

The Neumann Drive is an important new form of space propulsion available to spacecraft. It brings together the use of solid metal propellant with a simple design that enables mobility in space on demand, seamless integration into satellites, enhanced safety, and has created the unique capability of being able to be transported and stored with a full load of fuel.

The Space Industry Responsive Intelligent Thermal nanosatellite (SpIRIT for short) mission was developed by a consortium led by the University of Melbourne in cooperation with the Italian Space Agency and with funding from the Australian Space Agency. Neumann Space, an Australian-based space technology company focused on delivering superior mobility in space, and the developer of the Neumann Drive is one of the founding members of the consortium.

This month SpIRIT was able to demonstrate charging of the Neumann Drive’s power capacitors by the nanosatellite’s solar panels and batteries, and conduct several test firings, successfully demonstrating the ability to use Molybdenum as a solid metallic propellant.

The SpIRIT nanosatellite has been operating in orbit approximately 500km above Earth since its launch on 1 December 2023, during which time the consortium has worked to perform numerous diagnostic tests to validate the system’s electronics and in doing so confirm the resilience of the Neumann Drive to the challenging launch and orbital environments. A comprehensive Neumann Drive testing campaign will continue for the remaining of the two-year SpIRIT mission, with the goal of establishing for the first time the long-term characterisation of the system in orbit.