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Old 13th Feb 2003, 12:09
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Specnut727
 
Join Date: Jan 2003
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G'day CC, yes, air is nearly 80% nitrogen, which just gets sucked in, heated, and blown out the back. We can't do anything about it, but it costs us quite a bit of fuel just to heat it to exhaust temperature. Works just the same for piston engines.
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