Oswald Efficiency Factor Calculator

✖Wing Aspect Ratio is defined as the ratio of the square of wingspan to the wing area or wingspan over wing chord for a rectangular planform.ⓘ Wing Aspect Ratio [AR]

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✖The Oswald Efficiency Factor is a correction factor that represents the change in drag with lift of a three-dimensional wing or airplane, as compared with an ideal wing having the same aspect ratio.ⓘ Oswald Efficiency Factor [e_osw]

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Oswald Efficiency Factor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Oswald Efficiency Factor = 1.78*(1-0.045*Wing Aspect Ratio^(0.68))-0.64
e_osw = 1.78*(1-0.045*AR^(0.68))-0.64
This formula uses 2 Variables

Variables Used

Oswald Efficiency Factor - The Oswald Efficiency Factor is a correction factor that represents the change in drag with lift of a three-dimensional wing or airplane, as compared with an ideal wing having the same aspect ratio.
Wing Aspect Ratio - Wing Aspect Ratio is defined as the ratio of the square of wingspan to the wing area or wingspan over wing chord for a rectangular planform.

STEP 1: Convert Input(s) to Base Unit

Wing Aspect Ratio: 15 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

e_osw = 1.78*(1-0.045*AR^(0.68))-0.64 --> 1.78*(1-0.045*15^(0.68))-0.64

Evaluating ... ...

e_osw = 0.634903252151742

STEP 3: Convert Result to Output's Unit

0.634903252151742 --> No Conversion Required

FINAL ANSWER

0.634903252151742 ≈ 0.634903 <-- Oswald Efficiency Factor

(Calculation completed in 00.004 seconds)

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Home » Physics » Aerodynamics » Two Dimensional Incompressible Flow » Flow over Airfoils and Wings » Aerospace » Flow over Wings » Oswald Efficiency Factor

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Created by Prasana Kannan

Sri sivasubramaniyanadar college of engineering (ssn college of engineering), Chennai

Prasana Kannan has created this Calculator and 25+ more calculators!

Verified by Kaki Varun Krishna

Mahatma Gandhi Institute of Technology (MGIT), Hyderabad

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< Flow over Wings Calculators

2D Lift Curve Slope of Airfoil given Lift Slope of Finite Wing

LaTeX Go 2D Lift Curve Slope = Lift Curve Slope/(1-(Lift Curve Slope*(1+Induced Lift Slope Factor))/(pi*Wing Aspect Ratio))

Aspect Ratio given Span Efficiency Factor

LaTeX Go Wing Aspect Ratio = Lift Coefficient^2/(pi*Span Efficiency Factor*Induced Drag Coefficient)

2D Lift Curve Slope of Airfoil given Lift Slope of Elliptic Finite Wing

LaTeX Go 2D Lift Curve Slope = Lift Curve Slope/(1-Lift Curve Slope/(pi*Wing Aspect Ratio))

Effective Angle of Attack of Finite Wing

LaTeX Go Effective Angle of Attack = Geometric Angle of Attack-Induced Angle of Attack

Oswald Efficiency Factor Formula

LaTeX Go

Oswald Efficiency Factor = 1.78*(1-0.045*Wing Aspect Ratio^(0.68))-0.64
e_osw = 1.78*(1-0.045*AR^(0.68))-0.64

What is the Aspect ratio of a wing?

The Aspect Ratio of a wing is defined to be the square of the span divided by the wing area and is given the symbol AR. For a rectangular wing, this reduces the ratio of the span to the chord length.

How to Calculate Oswald Efficiency Factor?

Oswald Efficiency Factor calculator uses Oswald Efficiency Factor = 1.78*(1-0.045*Wing Aspect Ratio^(0.68))-0.64 to calculate the Oswald Efficiency Factor, The Oswald Efficiency Factor similar to the span efficiency It represents the ratio of induced drag to the total drag of the aircraft it is a correction factor that represents the change in drag with a lift of a three-dimensional wing or airplane. Oswald Efficiency Factor is denoted by e_osw symbol.

How to calculate Oswald Efficiency Factor using this online calculator? To use this online calculator for Oswald Efficiency Factor, enter Wing Aspect Ratio (AR) and hit the calculate button. Here is how the Oswald Efficiency Factor calculation can be explained with given input values -> 0.634903 = 1.78*(1-0.045*15^(0.68))-0.64.

FAQ

What is Oswald Efficiency Factor?

The Oswald Efficiency Factor similar to the span efficiency It represents the ratio of induced drag to the total drag of the aircraft it is a correction factor that represents the change in drag with a lift of a three-dimensional wing or airplane and is represented as e_osw = 1.78*(1-0.045*AR^(0.68))-0.64 or Oswald Efficiency Factor = 1.78*(1-0.045*Wing Aspect Ratio^(0.68))-0.64. Wing Aspect Ratio is defined as the ratio of the square of wingspan to the wing area or wingspan over wing chord for a rectangular planform.

How to calculate Oswald Efficiency Factor?

The Oswald Efficiency Factor similar to the span efficiency It represents the ratio of induced drag to the total drag of the aircraft it is a correction factor that represents the change in drag with a lift of a three-dimensional wing or airplane is calculated using Oswald Efficiency Factor = 1.78*(1-0.045*Wing Aspect Ratio^(0.68))-0.64. To calculate Oswald Efficiency Factor, you need Wing Aspect Ratio (AR). With our tool, you need to enter the respective value for Wing Aspect Ratio and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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