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Fuel Weight given Fuel Fraction Calculator

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✖Fuel Fraction is the ratio between weight of fuel caried by a plane to the aircraft total take off weight.ⓘ Fuel Fraction [F_f]			+10% -10%
✖Desired Takeoff Weight (or mass) is the weight of the aircraft.ⓘ Desired Takeoff Weight [DTW]			+10% -10%

✖Fuel Weight to be Carried is defined as the total mass of the fuel to be carried (usually includes reserve fuel).ⓘ Fuel Weight given Fuel Fraction [FW]

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Fuel Weight given Fuel Fraction Solution

STEP 0: Pre-Calculation Summary

Formula Used

Fuel Weight to be Carried = Fuel Fraction*Desired Takeoff Weight
FW = F_f*DTW
This formula uses 3 Variables

Variables Used

Fuel Weight to be Carried - (Measured in Kilogram) - Fuel Weight to be Carried is defined as the total mass of the fuel to be carried (usually includes reserve fuel).
Fuel Fraction - Fuel Fraction is the ratio between weight of fuel caried by a plane to the aircraft total take off weight.
Desired Takeoff Weight - (Measured in Kilogram) - Desired Takeoff Weight (or mass) is the weight of the aircraft.

STEP 1: Convert Input(s) to Base Unit

Fuel Fraction: 0.4 --> No Conversion Required
Desired Takeoff Weight: 250000 Kilogram --> 250000 Kilogram No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

FW = F_f*DTW --> 0.4*250000

Evaluating ... ...

FW = 100000

STEP 3: Convert Result to Output's Unit

100000 Kilogram --> No Conversion Required

FINAL ANSWER

100000 Kilogram <-- Fuel Weight to be Carried

(Calculation completed in 00.020 seconds)

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< Preliminary Design Calculators

Optimum Range for Jet Aircraft in Cruising Phase

LaTeX Go Range of Aircraft = (Velocity at Maximum Lift to Drag Ratio*Maximum Lift-to-Drag Ratio of Aircraft)/Power Specific Fuel Consumption*ln(Weight of Aircraft at Beginning of Cruise Phase/Weight of Aircraft at End of Cruise Phase)

Preliminary Take Off Weight Built-up for Manned Aircraft

LaTeX Go Desired Takeoff Weight = Payload Carried+Operating Empty Weight+Fuel Weight to be Carried+Crew Weight

Preliminary Take off Weight Built-Up for Manned Aircraft given Fuel and Empty Weight Fraction

LaTeX Go Desired Takeoff Weight = (Payload Carried+Crew Weight)/(1-Fuel Fraction-Empty Weight Fraction)

Fuel Fraction

LaTeX Go Fuel Fraction = Fuel Weight to be Carried/Desired Takeoff Weight

Fuel Weight given Fuel Fraction Formula

LaTeX Go

Fuel Weight to be Carried = Fuel Fraction*Desired Takeoff Weight
FW = F_f*DTW

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 Fuel Weight given Fuel Fraction?

Fuel Weight given Fuel Fraction calculator uses Fuel Weight to be Carried = Fuel Fraction*Desired Takeoff Weight to calculate the Fuel Weight to be Carried, The Fuel Weight given Fuel Fraction formula refers to the weight of the fuel carried by an aircraft at a particular point in time, typically measured at takeoff, during flight, or at landing, by multiplying the fuel fraction by the takeoff weight, you can determine the weight of the fuel carried by the aircraft, this calculation allows you to estimate the fuel weight based on the specified fuel fraction and takeoff weight values. Fuel Weight to be Carried is denoted by FW symbol.

How to calculate Fuel Weight given Fuel Fraction using this online calculator? To use this online calculator for Fuel Weight given Fuel Fraction, enter Fuel Fraction (F_f) & Desired Takeoff Weight (DTW) and hit the calculate button. Here is how the Fuel Weight given Fuel Fraction calculation can be explained with given input values -> 62500 = 0.4*250000.

FAQ

What is Fuel Weight given Fuel Fraction?

The Fuel Weight given Fuel Fraction formula refers to the weight of the fuel carried by an aircraft at a particular point in time, typically measured at takeoff, during flight, or at landing, by multiplying the fuel fraction by the takeoff weight, you can determine the weight of the fuel carried by the aircraft, this calculation allows you to estimate the fuel weight based on the specified fuel fraction and takeoff weight values and is represented as FW = F_f*DTW or Fuel Weight to be Carried = Fuel Fraction*Desired Takeoff Weight. Fuel Fraction is the ratio between weight of fuel caried by a plane to the aircraft total take off weight & Desired Takeoff Weight (or mass) is the weight of the aircraft.

How to calculate Fuel Weight given Fuel Fraction?

The Fuel Weight given Fuel Fraction formula refers to the weight of the fuel carried by an aircraft at a particular point in time, typically measured at takeoff, during flight, or at landing, by multiplying the fuel fraction by the takeoff weight, you can determine the weight of the fuel carried by the aircraft, this calculation allows you to estimate the fuel weight based on the specified fuel fraction and takeoff weight values is calculated using Fuel Weight to be Carried = Fuel Fraction*Desired Takeoff Weight. To calculate Fuel Weight given Fuel Fraction, you need Fuel Fraction (F_f) & Desired Takeoff Weight (DTW). With our tool, you need to enter the respective value for Fuel Fraction & Desired Takeoff Weight and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Fuel Weight to be Carried?

In this formula, Fuel Weight to be Carried uses Fuel Fraction & Desired Takeoff Weight. We can use 1 other way(s) to calculate the same, which is/are as follows -

Fuel Weight to be Carried = Desired Takeoff Weight-Operating Empty Weight-Payload Carried-Crew Weight

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