Impulse drive

Impulse drives are a form of sublight propulsion system used by the Forerunners and later by the Covenant.

Forerunner monitors possess impulse drives for long-distance travel, though they are notably slow; even the a journey as short as one from Installation 04 to Threshold would take hundreds of years with a monitor's impulse propulsion. As such, their primary form of long-distance transit on their assigned installations is the local teleportation grid.

The Covenant use impulse drives as propulsion systems on their Type-31 Seraphs and Type-27 Banshee fighters.

List of appearances

 * Halo 2
 * Conversations from the Universe
 * Halo: Reach
 * Halo: Combat Evolved Anniversary