What is Importance of Fuel Fraction?
In aerospace engineering, an aircraft's fuel fraction, fuel weight fraction, or a spacecraft's propellant fraction, is the weight of the fuel or propellant divided by the gross take-off weight of the craft (including propellant). The fractional result of this mathematical division. For aircraft with external drop tanks, the term internal fuel fraction is used to exclude the weight of external tanks and fuel. Fuel fraction is a key parameter in determining an aircraft's range, the distance it can fly without refueling. Breguet’s aircraft range equation describes the relationship of range with airspeed, lift-to-drag ratio, specific fuel consumption, and the part of the total fuel fraction available for cruise, also known as the cruise fuel fraction, or cruise fuel weight fraction.
How to Calculate Takeoff Weight given Fuel Fraction?
Takeoff Weight given Fuel Fraction calculator uses Desired Takeoff Weight = Fuel Weight to be Carried/Fuel Fraction to calculate the Desired Takeoff Weight, The Takeoff Weight given Fuel Fraction formula is calculation of Take Off Weight when Fuel Weight and Fuel Fraction are given. Desired Takeoff Weight is denoted by DTW symbol.
How to calculate Takeoff Weight given Fuel Fraction using this online calculator? To use this online calculator for Takeoff Weight given Fuel Fraction, enter Fuel Weight to be Carried (FW) & Fuel Fraction (Ff) and hit the calculate button. Here is how the Takeoff Weight given Fuel Fraction calculation can be explained with given input values -> 4400 = 1100/0.25.