CG Shift Fuel Calculator
Calculate the center-of-gravity shift after all specified fuel is burned from its stated arm.
Description
Calculate the center-of-gravity shift after all specified fuel is burned from its stated arm.
CG Shift Fuel Calculator provides a focused, reproducible calculation with explicit inputs and a deterministic result. Calculate the center-of-gravity shift after all specified fuel is burned from its stated arm.
Use to estimate the signed center-of-gravity change when all specified fuel at one arm is removed.
When to use CG Shift Fuel Calculator
Use to estimate the signed center-of-gravity change when all specified fuel at one arm is removed.1
How the calculation works
Calculate the center-of-gravity shift after all specified fuel is burned from its stated arm.2
Shift after burn = Wfuel(ZF-CG arm − fuel arm)/(WZF + Wfuel) Inputs and interpretation
Keep every input on the same valuation, timing, unit, and assumption basis. Interpret the output at the precision supported by those inputs rather than treating extra decimal places as additional certainty.
Limitations and assumptions
Real aircraft may have multiple tanks, transfer sequences, unusable fuel, changing arms, and approved loading envelopes; remain within every weight-and-balance limit throughout flight.
References
-
Pilot's Handbook of Aeronautical Knowledge — Federal Aviation Administration
-
Flight planning — Wikipedia contributors
Similar or alternative tools
- Weight Shift CG Calculator
Compute how far the center of gravity moves when a load is shifted a given distance.
- CG Percent MAC Calculator
Express the center-of-gravity position as a percentage of the mean aerodynamic chord.
- Gust Stall Speed Calculator
Calculate stall speed at a specified gust load factor using Vₛ,n = Vₛ,1g × √n. Supply a load factor derived from the applicable aircraft gust-envelope method; gust velocity alone is not enough to determine it.