torpedo sustainer engine
Propulsion system within a photon torpedo. It comprises a matter/antimatter fuel cell that powers a sustainer coil. The coil maintains a warp field around the torpedo that is handed off from the launching ship, allowing the torpedo to travel at warp speeds. As part of Dr. Timicin's experiments in 2367 in fusion enhancement within stars, sustainer engines were modified on a number of photon torpedoes.