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Old 01-03-2007, 12:55 AM  
spasmo
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Join Date: Dec 2005
Location: Couch
Posts: 2,678
"At maximum economy the engine exceeds 50% thermal efficiency. That is, more than 50% of the energy in the fuel in converted to motion.

For comparison, most automotive and small aircraft engines have BSFC figures in the 0.40-0.60 lbs/hp/hr range and 25-30% thermal efficiency range."

I think we should clone it.
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