The impulse drive was a sublight propulsion system used on starships, including, but not limited to, relativistic speeds. Stoneship-class starships could fly at 3/4 of the speed of light at full impulse. (Star Trek: The Stoneship Files: "Highly Illogical") Technology Impulse drive was essentially a fusion-powered rocket, usually powered with one or more fusion reactors. These reactors created plasma, who was then exhausted outside the ship, propelling it. (Star Trek: The Stoneship Files: "Dilithium Dance") External links Impulse drive article at Memory Alpha, the canon Star Trek wiki. Impulse drive article at Memory Beta, the non-canon Star Trek wiki. Retrieved from "https://stexpanded.fandom.com/wiki/Impulse_drive?oldid=221525" Categories: Propulsion technology Community content is available under CC-BY-SA unless otherwise noted.