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.
Shift after burn = Wfuel(ZF-CG arm − fuel arm)/(WZF + Wfuel) 1Inputs 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.
Assumptions and limitations
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
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Pilot's Handbook of Aeronautical Knowledge — Federal Aviation Administration