September 1, 2025
Sydney-based Space Machines Company has completed work on Australia’s first locally built engine for satellites, without relying on overseas suppliers. The Scintilla propulsion engine will be a major component of the company’s Optimus Viper rapid response vehicle, designed for rapid orbital manoeuvring and space domain awareness missions. SMC vice president of engineering and mission operations Ian Partis said the company had set out to vertically integrate the propulsion system for its Optimus Viper, rather than outsourcing the propulsion system to a third party. “The better the propulsion system and the more delta-v available, the greater range of orbits we can access and the faster we can get there,” he says. “This is so fundamental to our mission that the satellite is essentially a propulsion system with a payload on top.” SMC co-founder and chief executive Rajat Kulshrestha said the company had progressed faster on the engine than even their most optimistic predictions. “The engine has reached steady-state conditions and demonstrated the ability to run for extended periods – a…

















