RATE OF RISE AND MAXIMUM ALTITUDE COMPUTATIONS
Flight No. ___ Date ___
Time ___
BALLOON INFLATION
Desired Rate of Rise . . . . ___ ft./min.
Gross Load . . . ___
Assumed Gross Lift (Gross Load + 10%) G ___
G 2/3 ___
Free Lift - F = $ (\frac{V}{412})^{2} G^{2/3}. $ ___.
Equipment Weight. ___
Desired Balloon Inflation = Free Lift + Equipment Total ___ grams
Allowance for Leakage @ ___gm/hr, ___hrs. waiting___ "
Actual Balloon Inflation ___
MAXIMUM ALTITUDE
Balloon Volume. cu. ft.
kg/mol
Helium 11.1
Gas Lift/mol . . . . . Hydrogen 12.0 kg/mol
Molar Volume = $ \frac { \mathrm { B a l l o o n v o l u m e x g a s l i f t / m o l} } { \mathrm { g r o s s l o a d } } $ ___ cu. ft.
Maximum Altitude . . . . ___ ft. m.s.l.
Altitude Sensitivity ___ ft./kg.