“...because fuel weighs about 8 lbs./gallon...” [libertylover, post 38]
Gasoline = 6 lbs/gal
Jet fuel = 6.7 lbs/gal
Lube oil = 7 lbs/gal
Water = 8 lbs/gal
Standard planning factors about 40 years ago, when I took flying lessons. Not sure what’s used now.
Thanks for the correction.
From my Air Force days in aircraft instrumentation I’d remembered 8 lbs/gal but apparently that’s for water. In those planes, and I believe in passenger jets, the gauges display lbs., actually thousands of lbs., because it’s a better measure of how much energy is in the fuel since the volume of the fuel changes with temperature.
I was just curious, in a small plane is fuel quantity displayed in pounds or in gallons?