Repulsor engine

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This article is about Covenant starship engines. For the gravity manipulation technology, see anti-gravity technology.
The Gablien-pattern repulsor engines of a battlecruiser.

A repulsor engine, also referred to as a repulsor drive, is a diametric drive used by Covenant ships for sublight navigation,[1][2] configured for swift and agile localized transit.[3]

Functionality and mechanics[edit]

Repulsor engines use stacked tidal gravity generators which create asymmetrical gravity fields that push and pull a ship through space in a desired vector, all without the need for reaction mass or conventional exhaust. An extremely sophisticated application of gravitics,[1][4] these engines are powered by a ship's pinch fusion reactors.[5] Modern repulsor engines are finely tuned and expected to operate for years without maintenance refreshes. However, the repulsor engines on older, vestigial warships—such as the drives outfitted on the Hekar Taa-pattern blockade runner — are cruder pieces of technology, requiring constant monitoring and adjustment to operate at full power.[6][2]

A repulsor engine produces quantum fluctuations in its wake that are extremely hazardous to personnel and nearby vessels within its range, particularly when operating at high "thrust".[4][7] These fluctuations are capable of interfering with the operation of gravitic technologies in the vicinity of the fluctuations. Prolonged exposure to unshielded repulsor drive elements can cause neurological degradation and even psychosis in most species - something the San'Shyuum considered largely beneath their notice.[2]


Callipoas-pattern repulsor engines on a corvette





List of appearances[edit]


  1. ^ a b Halo: Warfleet, page 92
  2. ^ a b c Halo Encyclopedia (2022 edition), page 223
  3. ^ Halo Mythos, page 154
  4. ^ a b c Halo: Warfleet, page 62-63
  5. ^ a b Halo: Warfleet, page 70-71
  6. ^ Halo: Warfleet, page 79
  7. ^ Halo: Ghosts of Onyx, p. 331
  8. ^ Halo Mythos, page 132
  9. ^ Halo: Reach, campaign level Long Night of Solace
  10. ^ Halo: Warfleet, page 77