http://forums.startrekonline.com/sho...d.php?t=163406
There is a pretty good guide to the ins and outs of impulse engines.
Of particular interest:
Quote:
Engine Power .............100....75.....50.....25
Hyper Impulse Engine ....29.78..23.80..17.84..11.86
Impulse Engine ..........27.13..22.69..18.28..13.86
Combat Impulse Engine ...24.17..21.52..18.86..16.21
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Which indicates flight speed for each engine at various power levels.