A Deceleration drive is an engine used by the Asgard specifically to control a ship's atmospheric reentry. They are known to be used in Bilskirnir-class ships. (SG1: "Nemesis")
History
In 2000, after the replicators took control of Thor's ship the Biliskner, SG-1 used a BF-8 on the outside of the ship to blow the deceleration drive to affect the ship's entry path to Earth. (SG1: "Nemesis")
| Slower-than-light | Blast jet • Death Glider propulsion system • Ion drive • Maneuvering thruster • Sublight engine |
| Faster-than-light | Faster-Than-Light engine • Hyperdrive • Stardrive • Wormhole drive |
| Other | Alternate reality drive • Deceleration drive • Drive • Propulsion |