Poseidon is a next-generation fusion engine unveiled by RSI in 2214. While the standard fusion engine utilized a specific impulse of 130,000 seconds, Poseidon is capable of achieving speeds close to 18,600 miles per second, or 1/10th the speed of light while increasing the specific impulse to 375,000 seconds, the Poseidon also feature augmented hydrogen-scrubber technology in order to better facilitate fuel collection while in flight.
The engine consists of three micro-reactors hardwired into a series of relays and scrubbers. During flight in deep space, the scrubbers collect hydrogen which are then filtered and funneled into the fusion reactors. What was particularly ingenious about this engine was the Terrestrial Atmospheric Applicators (TAA). These applicators could be activated when entering into a foreign planets atmo and the engine could extract necessary elements from the air, thus maintaining its fuel rate.