Default: 44 (BR4), 45 (BR5), 46 (Meteor)
Numeric Value: 7
Gravitonic accelerators make a ship travel twice as far as ships with conventional engines. At warp 9, a gravitonic ship goes 162 light years per turn. For these 162 ly, the ship uses the same amount of fuel which a normal ship would burn for 81 ly. That is, Gravitonic ships use only approximately half the fuel a normal ship would use.
Gravitonic accelerators also double the tow strength of the ship.
Gravitonic accelerators have no effect on the Ramscoop; if it moves 162 ly, it will also make fuel for 162 ly.