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
eosw = 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
eosw = 1.78*(1-0.045*AR^(0.68))-0.64 --> 1.78*(1-0.045*15^(0.68))-0.64
Evaluating ... ...
eosw = 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)

Credits

Created by Prasana Kannan
Sri sivasubramaniyanadar college of engineering (ssn college of engineering), Chennai
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Mahatma Gandhi Institute of Technology (MGIT), Hyderabad
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11 Flow over Wings Calculators

Aspect Ratio of Wing given Lift Curve Slope of Finite Wing
Go Wing Aspect Ratio = (2D Lift Curve Slope*(1+Induced Lift Slope Factor))/(pi*(2D Lift Curve Slope/Lift Curve Slope-1))
Lift Curve Slope for Finite Wing
Go Lift Curve Slope = 2D Lift Curve Slope/(1+(2D Lift Curve Slope*(1+Induced Lift Slope Factor))/(pi*Wing Aspect Ratio))
2D Lift Curve Slope of Airfoil given Lift Slope of Finite Wing
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
Go Wing Aspect Ratio = Lift Coefficient^2/(pi*Span Efficiency Factor*Induced Drag Coefficient)
Aspect Ratio of Wing given Lift Curve Slope of Elliptic Finite Wing
Go Wing Aspect Ratio = 2D Lift Curve Slope/(pi*(2D Lift Curve Slope/Lift Curve Slope-1))
Lift Curve Slope for Elliptic Finite Wing
Go Lift Curve Slope = 2D Lift Curve Slope/(1+2D Lift Curve Slope/(pi*Wing Aspect Ratio))
2D Lift Curve Slope of Airfoil given Lift Slope of Elliptic Finite Wing
Go 2D Lift Curve Slope = Lift Curve Slope/(1-Lift Curve Slope/(pi*Wing Aspect Ratio))
Geometric Angle of Attack given Effective Angle of Attack
Go Geometric Angle of Attack = Effective Angle of Attack+Induced Angle of Attack
Induced Angle of Attack given Effective Angle of Attack
Go Induced Angle of Attack = Geometric Angle of Attack-Effective Angle of Attack
Effective Angle of Attack of Finite Wing
Go Effective Angle of Attack = Geometric Angle of Attack-Induced Angle of Attack
Oswald Efficiency Factor
Go Oswald Efficiency Factor = 1.78*(1-0.045*Wing Aspect Ratio^(0.68))-0.64

Oswald Efficiency Factor Formula

Oswald Efficiency Factor = 1.78*(1-0.045*Wing Aspect Ratio^(0.68))-0.64
eosw = 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 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 eosw 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 is a correction factor that represents the change in drag with a lift of a three-dimensional wing or airplane and is represented as eosw = 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 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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