Impulse driver coil
The impulse driver coil was a driver coil used in the impulse engine of a starship. 

In 2370 in the mirror universe, the impulse driver coil on 's starship was non-operational, he told Smiley O'Brien to "take care of it". O'Brien claimed he couldn't because he had "a serious problem in ore processing that's got to be fixed," but Sisko explained that "I don't care what's going on in ore processing. Fix my engine." ()

Propulsion technology