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#4
December 12th 04, 12:15 AM
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As far as the amount of air being passed through an engine, for a
reciprocating engine, the amount is much smaller than a jet engine. Gallons per second for a piston engine, and hundreds of gallons for a jet engine? Something like that. Let me see..... The fuel-air mixture for a piston engine is about 14 pounds of air per pound of avgas, is it not? Would it be about the same for jet fuel? How "big" a pound of air is depends on pressure and temperature (Boyles' and Charles' Laws, if I recall correctly), but I can't even guess how big a box it would take to hold a pound of air at STP. Perhaps someone else can. I guess any good chemist could do it. vince norris 
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