Empty Weight given Empty Weight Fraction Calculator

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✖Empty Weight Fraction is the ration of Operating Empty Weight to Desired Takeoff Weight.ⓘ Empty Weight Fraction [E_f]			+10% -10%
✖Desired Takeoff Weight (or mass) is the weight of the aircraft.ⓘ Desired Takeoff Weight [DTW]			+10% -10%

✖Operating Empty Weight of the Aircraft is the weight of the aircraft without including passengers, baggage, or fuel.ⓘ Empty Weight given Empty Weight Fraction [OEW]

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Formula

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Empty Weight given Empty Weight Fraction

Formula

`"OEW" = "E"_{"f"}*"DTW"`

Example

`"175000kg"="0.7"*"250000kg"`

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Empty Weight given Empty Weight Fraction Solution

STEP 0: Pre-Calculation Summary

Formula Used

Operating Empty Weight = Empty Weight Fraction*Desired Takeoff Weight
OEW = E_f*DTW
This formula uses 3 Variables

Variables Used

Operating Empty Weight - (Measured in Kilogram) - Operating Empty Weight of the Aircraft is the weight of the aircraft without including passengers, baggage, or fuel.
Empty Weight Fraction - Empty Weight Fraction is the ration of Operating Empty Weight to Desired Takeoff 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

Empty Weight Fraction: 0.7 --> No Conversion Required
Desired Takeoff Weight: 250000 Kilogram --> 250000 Kilogram No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

OEW = E_f*DTW --> 0.7*250000

Evaluating ... ...

OEW = 175000

STEP 3: Convert Result to Output's Unit

175000 Kilogram --> No Conversion Required

FINAL ANSWER

175000 Kilogram <-- Operating Empty Weight

(Calculation completed in 00.004 seconds)

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Created by Vedant Chitte

All India Shri Shivaji Memorials Society's ,College of Engineering (AISSMS COE PUNE), Pune

Vedant Chitte has created this Calculator and 25+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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Velocity for Maximizing Range given Range for Jet Aircraft

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Optimum Range for Jet Aircraft in Cruising Phase

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)

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Preliminary Take Off Weight Built-up for Manned Aircraft

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Payload Weight given Takeoff Weight

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

Empty Weight given Takeoff Weight

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

Crew Weight given Takeoff Weight

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

Fuel Weight given Takeoff Weight

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

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

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Fuel Fraction given Takeoff Weight and Empty Weight Fraction

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

Empty Weight Fraction given Takeoff Weight and Fuel Fraction

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

Payload Weight given Fuel and Empty Weight Fractions

Go Payload Carried = Desired Takeoff Weight*(1-Empty Weight Fraction-Fuel Fraction)-Crew Weight

Crew Weight given Fuel and Empty Weight Fraction

Go Crew Weight = Desired Takeoff Weight*(1-Empty Weight Fraction-Fuel Fraction)-Payload Carried

Takeoff Weight given Empty Weight Fraction

Go Desired Takeoff Weight = Operating Empty Weight/Empty Weight Fraction

Empty Weight given Empty Weight Fraction

Go Operating Empty Weight = Empty Weight Fraction*Desired Takeoff Weight

Empty Weight Fraction

Go Empty Weight Fraction = Operating Empty Weight/Desired Takeoff Weight

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Go Coefficient of Friction = 4.55/(log10(Winglet Reynolds Number^2.58))

Takeoff Weight given Fuel Fraction

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Fuel Weight given Fuel Fraction

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Design range given range increment

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Empty Weight given Empty Weight Fraction Formula

Operating Empty Weight = Empty Weight Fraction*Desired Takeoff Weight
OEW = E_f*DTW

What is empty weight of an aircraft?

The empty weight of an aircraft is the weight of the aircraft without including passengers, baggage, or fuel. Standard empty weight usually includes unusable fuel, full operating fluids, and full engine oil.

How to Calculate Empty Weight given Empty Weight Fraction?

Empty Weight given Empty Weight Fraction calculator uses Operating Empty Weight = Empty Weight Fraction*Desired Takeoff Weight to calculate the Operating Empty Weight, The Empty Weight given Empty Weight Fraction formula is the weight of aircraft without any payload or crew i.e. only structural weight and weight including engine oil and full operating fluids. Operating Empty Weight is denoted by OEW symbol.

How to calculate Empty Weight given Empty Weight Fraction using this online calculator? To use this online calculator for Empty Weight given Empty Weight Fraction, enter Empty Weight Fraction (E_f) & Desired Takeoff Weight (DTW) and hit the calculate button. Here is how the Empty Weight given Empty Weight Fraction calculation can be explained with given input values -> 175000 = 0.7*250000.

FAQ

What is Empty Weight given Empty Weight Fraction?

The Empty Weight given Empty Weight Fraction formula is the weight of aircraft without any payload or crew i.e. only structural weight and weight including engine oil and full operating fluids and is represented as OEW = E_f*DTW or Operating Empty Weight = Empty Weight Fraction*Desired Takeoff Weight. Empty Weight Fraction is the ration of Operating Empty Weight to Desired Takeoff Weight & Desired Takeoff Weight (or mass) is the weight of the aircraft.

How to calculate Empty Weight given Empty Weight Fraction?

The Empty Weight given Empty Weight Fraction formula is the weight of aircraft without any payload or crew i.e. only structural weight and weight including engine oil and full operating fluids is calculated using Operating Empty Weight = Empty Weight Fraction*Desired Takeoff Weight. To calculate Empty Weight given Empty Weight Fraction, you need Empty Weight Fraction (E_f) & Desired Takeoff Weight (DTW). With our tool, you need to enter the respective value for Empty Weight 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 Operating Empty Weight?

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

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

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