Quote:
Originally Posted by redpoint5
Measured in weight because monitoring volume is more difficult? Expansion and contraction problems?
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Yes, thermal expansion / contraction.
Imagine leaving Dallas / Ft Worth on a 110-degree day, and ascending within minutes to 41,000-feet ,where it's minus-68-degrees.
Even with what seems like an insignificant coefficient of thermal expansion, it's a matter of life and death to 'know' how much fuel you have. Mass won't lie. Volume may.
A reason why internal combustion engines are rated at 'pounds per horsepower-hour' , not gallons.
