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Old 10-03-2017, 05:00 AM   #4
ericbsmith
 
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Join Date: Aug 2004
Location: Binghamton, NY, USA. Near the river Styx in the 5th Circle.
Default Re: [Spaceships] simply fuel math...

Delta-V - the change in velocity - is a measure of engine efficiency and does not change with engine size (at least, not on the scale of engines mounted on spaceships). A larger engine uses fuel just as efficiently as a smaller engine does.
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