The Rubicon Space Systems Phantom Propulsion System is a large, self-contained propulsion module designed for space applications.

The module is outfitted with an externally accessible fuel port. It uses four 0.1N ASCENT thrusters in pump-fed operation.

Phantom delivers approximately 9000 Ns of total impulse with a mass of less than 10kg. It can be configured with an auxiliary propellant feed port to add an electrospray propulsion subsystem, enabling dual-mode propulsion. The module also consists of separate power rails for controller electronics, heaters, and valves providing enhanced personnel safety and operational hazard mitigation.