Filling with fuel right to the top?
I know this is a silly question, but I genuinely am not sure....
In an R-22, the volume of usable fuel in the tanks are 73Ltr(91.2 usG) and 40Ltr (10.5usG)
What I want to know is, does the tank have to be filled right to the brim close to overflowing to make use of that?.... Or is there some allowable air gap at the top?
What airgap should there be above the fuel?
Obviously appropriate weight and balance calcs have to be made for that much fuel....but....Im curious all the same,
And, I have always been told to do endurance calculations on a burn or 10Gallons per hour.... Is this reasonable or am I way out? I know some people use 8GPH.... What is more accurate?