Fuel Fraction of the Flight Segment

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where

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is the aircraft weight at the beginning of this segment.

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is the weight of the fuel used in the segment.

See Typical Warm-up Segment Fuel Fractions

See Typical Taxi Segment Fuel Fractions

See Typical Take-off Segment Fuel Fractions

See Typical Climb Segment Fuel Fractions

See Typical Descent Segment Fuel Fractions

See Typical Landing/Taxi/Shutdown Segment Fuel Fractions

See Typical Stall Segment Fuel Fractions