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Takeoff Weight given Empty Weight Fraction Formula

GoPreliminary Take Off Weight Built-up for Manned Aircraft Formula

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

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Desired Takeoff Weight (or mass) is the weight of the aircraft. Check FAQs

DTW = \frac{OEW}{E f}

DTW - Desired Takeoff Weight?OEW - Operating Empty Weight?E_f - Empty Weight Fraction?

Takeoff Weight given Empty Weight Fraction Example

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Here is how the Takeoff Weight given Empty Weight Fraction equation looks like with Values.

Here is how the Takeoff Weight given Empty Weight Fraction equation looks like with Units.

Here is how the Takeoff Weight given Empty Weight Fraction equation looks like.

250000 = \frac{125000}{0.5}

250000kg = \frac{125000kg}{0.5}

250000 = \frac{125000}{0.5}

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Takeoff Weight given Empty Weight Fraction Solution

Follow our step by step solution on how to calculate Takeoff Weight given Empty Weight Fraction?

FIRST Step Consider the formula

DTW = \frac{OEW}{E f}

Next Step Substitute values of Variables

∴

DTW = \frac{125000kg}{0.5}

Next Step Prepare to Evaluate

∴

DTW = \frac{125000}{0.5}

LAST Step Evaluate

∴

DTW = 250000kg

Takeoff Weight given Empty Weight Fraction Formula Elements

Variables

Desired Takeoff Weight

Desired Takeoff Weight (or mass) is the weight of the aircraft.

Symbol: DTW

Measurement: WeightUnit: kg

Note: Value should be greater than 0.

Formulas to find Desired Takeoff Weight

Operating Empty Weight

Operating Empty Weight of the aircraft is the aircraft's weight without including passengers, baggage, or fuel.

Symbol: OEW

Measurement: WeightUnit: kg

Note: Value should be greater than 0.

Formulas to find Operating Empty Weight

Empty Weight Fraction

Empty Weight Fraction is the ratio of the operating empty weight to the desired takeoff weight.

Symbol: E_f

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Empty Weight Fraction

Other Formulas to find Desired Takeoff Weight

Go Preliminary Take Off Weight Built-up for Manned Aircraft

DTW = PYL + OEW + FW + W c

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

DTW = \frac{PYL + W c}{1 - F f - E f}

Go Takeoff Weight given Fuel Fraction

DTW = \frac{FW}{F f}

Other formulas in Preliminary Design category

Go Fuel Fraction

F f = \frac{FW}{DTW}

Go Optimum Range for Jet Aircraft in Cruising Phase

R = \frac{V L/D(max) \cdot LDmax ratio}{c} \cdot \ln (\frac{W i}{W f})

Go Optimum Range for Prop-Driven Aircraft in Cruising Phase

R opt = \frac{η \cdot LDmax ratio}{c} \cdot \ln (\frac{W i}{W f})

Go Payload Weight given Takeoff Weight

PYL = DTW - OEW - W c - FW

How to Evaluate Takeoff Weight given Empty Weight Fraction?

Takeoff Weight given Empty Weight Fraction evaluator uses Desired Takeoff Weight = Operating Empty Weight/Empty Weight Fraction to evaluate the Desired Takeoff Weight, The Takeoff Weight given Empty Weight Fraction formula provides the takeoff weight based on the specified empty weight fraction and the empty weight of the aircraft, to calculate the takeoff weight of an aircraft given the empty weight fraction, you'll need to consider the relationship between the empty weight fraction, the fuel fraction, and the total takeoff weight. Desired Takeoff Weight is denoted by DTW symbol.

How to evaluate Takeoff Weight given Empty Weight Fraction using this online evaluator? To use this online evaluator for Takeoff Weight given Empty Weight Fraction, enter Operating Empty Weight (OEW) & Empty Weight Fraction (E_f) and hit the calculate button.

FAQs on Takeoff Weight given Empty Weight Fraction

What is the formula to find Takeoff Weight given Empty Weight Fraction?

The formula of Takeoff Weight given Empty Weight Fraction is expressed as Desired Takeoff Weight = Operating Empty Weight/Empty Weight Fraction. Here is an example- 20000 = 125000/0.5.

How to calculate Takeoff Weight given Empty Weight Fraction?

With Operating Empty Weight (OEW) & Empty Weight Fraction (E_f) we can find Takeoff Weight given Empty Weight Fraction using the formula - Desired Takeoff Weight = Operating Empty Weight/Empty Weight Fraction.

What are the other ways to Calculate Desired Takeoff Weight?

Here are the different ways to Calculate Desired Takeoff Weight-

Desired Takeoff Weight=Payload Carried+Operating Empty Weight+Fuel Weight to be Carried+Crew Weight
Desired Takeoff Weight=(Payload Carried+Crew Weight)/(1-Fuel Fraction-Empty Weight Fraction)
Desired Takeoff Weight=Fuel Weight to be Carried/Fuel Fraction

Can the Takeoff Weight given Empty Weight Fraction be negative?

No, the Takeoff Weight given Empty Weight Fraction, measured in Weight cannot be negative.

Which unit is used to measure Takeoff Weight given Empty Weight Fraction?

Takeoff Weight given Empty Weight Fraction is usually measured using the Kilogram[kg] for Weight. Gram[kg], Milligram[kg], Ton (Metric)[kg] are the few other units in which Takeoff Weight given Empty Weight Fraction can be measured.

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Takeoff Weight given Empty Weight Fraction Formula

​GoPreliminary Take Off Weight Built-up for Manned Aircraft Formula

​GoPreliminary Take off Weight Built-Up for Manned Aircraft given Fuel and Empty Weight Fraction Formula

Takeoff Weight given Empty Weight Fraction Example

Takeoff Weight given Empty Weight Fraction Solution

Takeoff Weight given Empty Weight Fraction Formula Elements

Other Formulas to find Desired Takeoff Weight

Other formulas in Preliminary Design category

How to Evaluate Takeoff Weight given Empty Weight Fraction?

FAQs on Takeoff Weight given Empty Weight Fraction

Variable Name

GoPreliminary Take Off Weight Built-up for Manned Aircraft Formula

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