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Operating Empty Weight of the aircraft is the aircraft's weight without including passengers, baggage, or fuel. Check FAQs
OEW=DTW-FW-PYL-Wc
OEW - Operating Empty Weight?DTW - Desired Takeoff Weight?FW - Fuel Weight to be Carried?PYL - Payload Carried?Wc - Crew Weight?

Empty Weight given Takeoff Weight Example

With values
With units
Only example

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

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

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

125000Edit=250000Edit-100000Edit-12400Edit-12600Edit
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HomeIcon Home » Category Physics » Category Aerospace » Category Aircraft Mechanics » fx Empty Weight given Takeoff Weight

Empty Weight given Takeoff Weight Solution

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

FIRST Step Consider the formula
OEW=DTW-FW-PYL-Wc
Next Step Substitute values of Variables
∴ OEW=250000kg-100000kg-12400kg-12600kg
Next Step Prepare to Evaluate
∴ OEW=250000-100000-12400-12600
LAST Step Evaluate
∴OEW=125000kg

Empty Weight given Takeoff Weight Formula Elements

Variables
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 WeightOpen Variable
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 WeightOpen Variable
Fuel Weight to be Carried
Fuel Weight to be Carried is defined as the total mass of the fuel to be carried (usually includes reserve fuel).
Symbol: FW
Measurement: WeightUnit: kg
Note: Value can be positive or negative.
Formulas to find Fuel Weight to be CarriedOpen Variable
Payload Carried
Payload Carried (passengers and cargo) is the object or the entity which is being carried by an aircraft or a launch vehicle.
Symbol: PYL
Measurement: WeightUnit: kg
Note: Value should be greater than 0.
Formulas to find Payload CarriedOpen Variable
Crew Weight
Crew Weight is the weight of staff which are required for the functioning of the plane. It contains the weight of Pilots, flight engineer, navigation pilot and airplane staff to serve the passengers.
Symbol: Wc
Measurement: WeightUnit: kg
Note: Value should be greater than 0.
Formulas to find Crew WeightOpen Variable

Other Formulas to find Operating Empty Weight

​Go Empty Weight given Empty Weight Fraction
OEW=Ef⋅DTW

Other formulas in Preliminary Design category

​Go Preliminary Take Off Weight Built-up for Manned Aircraft
DTW=PYL+OEW+FW+Wc
​Go Fuel Fraction
Ff=FWDTW
​Go Preliminary Take off Weight Built-Up for Manned Aircraft given Fuel and Empty Weight Fraction
DTW=PYL+Wc1-Ff-Ef
​Go Optimum Range for Jet Aircraft in Cruising Phase
R=VL/D(max)⋅LDmaxratioc⋅ln(WiWf)

How to Evaluate Empty Weight given Takeoff Weight?

Empty Weight given Takeoff Weight evaluator uses Operating Empty Weight = Desired Takeoff Weight-Fuel Weight to be Carried-Payload Carried-Crew Weight to evaluate the Operating Empty Weight, The Empty Weight given Takeoff Weight formula is the weight of the aircraft when it is empty, including the weight of the structure, engines, systems, and other components, this formula calculates the empty weight by subtracting the weight attributed to fuel, crew, passengers, cargo, and any other payload from the total takeoff weight, based on the specified Empty Weight Fraction, it provides an estimate of the empty weight based on the known takeoff weight and EWF values, which is useful for weight and balance calculations, aircraft performance planning, and other engineering analyses. Operating Empty Weight is denoted by OEW symbol.

How to evaluate Empty Weight given Takeoff Weight using this online evaluator? To use this online evaluator for Empty Weight given Takeoff Weight, enter Desired Takeoff Weight (DTW), Fuel Weight to be Carried (FW), Payload Carried (PYL) & Crew Weight (Wc) and hit the calculate button.

FAQs on Empty Weight given Takeoff Weight

What is the formula to find Empty Weight given Takeoff Weight?
The formula of Empty Weight given Takeoff Weight is expressed as Operating Empty Weight = Desired Takeoff Weight-Fuel Weight to be Carried-Payload Carried-Crew Weight. Here is an example- 125000 = 250000-100000-12400-12600.
How to calculate Empty Weight given Takeoff Weight?
With Desired Takeoff Weight (DTW), Fuel Weight to be Carried (FW), Payload Carried (PYL) & Crew Weight (Wc) we can find Empty Weight given Takeoff Weight using the formula - Operating Empty Weight = Desired Takeoff Weight-Fuel Weight to be Carried-Payload Carried-Crew Weight.
What are the other ways to Calculate Operating Empty Weight?
Here are the different ways to Calculate Operating Empty Weight-
  • Operating Empty Weight=Empty Weight Fraction*Desired Takeoff WeightOpenImg
Can the Empty Weight given Takeoff Weight be negative?
No, the Empty Weight given Takeoff Weight, measured in Weight cannot be negative.
Which unit is used to measure Empty Weight given Takeoff Weight?
Empty Weight given Takeoff Weight is usually measured using the Kilogram[kg] for Weight. Gram[kg], Milligram[kg], Ton (Metric)[kg] are the few other units in which Empty Weight given Takeoff Weight can be measured.
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