Fusion drive (EXverse)

The Fusion drive, also known as fusion engine, is a type of spacecraft propulsion system which serves as the primary form of sublight propoulsion on most human spacecrafts, as opposed to Shaw-Fujikawa Engine which is used for faster-than-light travel.
== History ==
== Overview ==
Fusion drives fuse Deuterium and Helium-3 atoms to generate a stable and abundant supply of superheated plasma within a magnetic containment field. The plasma is channeled then into a series of exhaust manifolds, which vector it out of the ship's engine nozzles along with added water or hydrogen reaction mass to provide propulsion for the ship. The drive system utilizes inertial-electrostatic containment and higher-order manifolds to mitigate fusion backblast, while magnetic fields and thrust-vectoring plates are used to improve maneuverability. A fusion drive is capable of generate a high amount of bot power and direct thrust for the ship. Usually a UNSC warship is able to decide if direct the energy outputted to both weapons systems and engine or only to one or another. This can be useful depending on the situation.
=== Starfire IV's improvements ===
UNSC Pillar of Autumn mounted an experimental engine based on two smaller reactors around a larger one, which could boosting the overall power output by 300% for a short time if needed; besides this, the cooling system was deeply different: featured a laser-induced optical slurry of ions chilled to near-absolute zero, which was far more efficient than the typical method and removed the reliance on expendable chemical temperature-control substances. In essence, the amount of excess heat removed by the new system increased as the reactors' output did. This self-regulating and self-cooling power plant was critical in combat since it virtually eliminated a commander's concerns about overheating and slagging a ship's engines. This cooling system was first introduced aboard Serpent destroyers and Strident frigates, but it saw widespread use after being mounted on the Autumn.
== Known models ==
The following list is ordered by manufacturer.
=== Naoto Technologies ===
* V1/B-DFR: put onto Vindication-class third block.
* V2/C-DFR: installed onto .
* V5/C-DFR: fitted on UNSC-specs Punic-class.
* V8/C-DFR: installed onto .
* V3/D-DFR: put on ' first flight.
* V5/F-DFR: installed aboard ' second flight.
* V4/L-DFR: used aboard ' first flight.
=== Boglin Fields ===
* Starfire I: mounted on ' first flight.
* Starfire II: mounted on Orion-class assault carriers' Flight II.
* Starfire III: mounted on Alliance-class heavy battleships' Flight II.
* Starfire IV: installed onto UNSC Pillar of Autumn after its refit.
* SX4: fitted onto .
* S17/X-BFD: installed aboard .
=== Hanley-Messer Naval Systems ===
* Mark I: installed aboard ' first flight.
* Mark II: used by ' first block.
* Mark III: put on Valiant-class' second flight.
* Mark IV: put onto Vindication-class' Block II.
=== Seven Stars Naval Manufacturing ===
* Warhammer 2: used aboard prior their refit.
* Warhammer 3: used aboard Hillsborough-class heavy destroyer and Halcyon-class light cruiser after their refit in 2525, as well as Marathon-class' Block I.
* Wildfire I: used aboard ' Block II, and .
* Wildfire II: used aboard Marathon-class Block III, IV and V.
* Warhorse 1: put onto Halberd-class' second flight.
=== Orphios Energy Systems ===
* Jupiter-2: mounted aboard CMA-specs .
* Jupiter-4: installed on Charon-class' Flight II.
* Saturn-4: put on ' Flight I.
* Saturn-5: put onto Paris-class heavy frigates' Flight II.
* Titan-1: installed aboard Paris-class heavy frigates' Flight III.
* Titan-2: mounted on Halberd-class' Flight III.
=== Starwerx ===
* DFD-1: mounted on .
* DFD-2: used aboard .
* DFD-3: mounted on Valiant-class' fourth flight.
* DFD-4: put onto 
* DFD-5: installed aboard .
=== OKB Karman ===
* 24F: installed aboard ' first block.
* 56K: mounted on Stalwart-class' first flight.
* 17J: fitted onto Punic-class after its refit in 2526.