The fuel fraction for the climb phase of a flight, often referred to as “FC” (Fuel for Climb) or “Climb Fuel Fraction,” represents the proportion of an aircraft’s total fuel consumption that is typically consumed during the climb phase of a flight. This fraction is used to estimate the fuel required to ascend from takeoff altitude to cruising altitude.
The formula for calculating the Climb Fuel Fraction () is as follows:
- “Fuel Burned during Climb” is the amount of fuel consumed during the climb phase of the flight, from takeoff altitude to cruising altitude (typically in kilograms or pounds).
- “Total Fuel Onboard” is the total amount of fuel carried by the aircraft at the start of the flight (typically in kilograms or pounds).
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