## Credits

Sri sivasubramaniyanadar college of engineering (ssn college of engineering), Chennai
Prasana Kannan has created this Calculator and 25+ more calculators!
Mahatma Gandhi Institute of Technology (MGIT), Hyderabad
Kaki Varun Krishna has verified this Calculator and 10+ more calculators!

## Oswald Efficiency Factor Solution

STEP 0: Pre-Calculation Summary
Formula Used
Oswald efficiency factor = (1.78*(1-(0.045*(Aspect Ratio of a wing^(0.68)))))-0.64
e = (1.78*(1-(0.045*(AR^(0.68)))))-0.64
This formula uses 1 Variables
Variables Used
Aspect Ratio of a wing- The Aspect Ratio of a wing is defined as the ratio of its span to its mean chord.
STEP 1: Convert Input(s) to Base Unit
Aspect Ratio of a wing: 4 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
e = (1.78*(1-(0.045*(AR^(0.68)))))-0.64 --> (1.78*(1-(0.045*(4^(0.68)))))-0.64
Evaluating ... ...
e = 0.934395171210423
STEP 3: Convert Result to Output's Unit
0.934395171210423 --> No Conversion Required
0.934395171210423 <-- Oswald efficiency factor
(Calculation completed in 00.000 seconds)

## < 5 Aspect ratio Calculators

Aspect ratio of wing given lift curve slope of a finite wing
Wing Aspect Ratio VC = (2D lift curve slope*(1+Induced lift slope factor))/(pi*((2D lift curve slope/Lift curve slope)-1)) Go
Aspect ratio given induced drag factor
Wing Aspect Ratio VC = ((1+Induced drag factor)*Lift Coefficient^2)/(pi*Induced drag coefficient) Go
Aspect ratio given span efficiency factor
Wing Aspect Ratio VC = Lift Coefficient^2/(pi*Span Efficiency Factor*Induced drag coefficient) Go
Aspect ratio of wing given lift curve slope of the elliptic finite wing
Wing Aspect Ratio VC = 2D lift curve slope/(pi*((2D lift curve slope/Lift curve slope)-1)) Go
Oswald Efficiency Factor
Oswald efficiency factor = (1.78*(1-(0.045*(Aspect Ratio of a wing^(0.68)))))-0.64 Go

### Oswald Efficiency Factor Formula

Oswald efficiency factor = (1.78*(1-(0.045*(Aspect Ratio of a wing^(0.68)))))-0.64
e = (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 as shown in the upper right of the figure.

## How to Calculate Oswald Efficiency Factor?

Oswald Efficiency Factor calculator uses Oswald efficiency factor = (1.78*(1-(0.045*(Aspect Ratio of a wing^(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 e symbol.

How to calculate Oswald Efficiency Factor using this online calculator? To use this online calculator for Oswald Efficiency Factor, enter Aspect Ratio of a wing (AR) and hit the calculate button. Here is how the Oswald Efficiency Factor calculation can be explained with given input values -> 0.934395 = (1.78*(1-(0.045*(4^(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 e = (1.78*(1-(0.045*(AR^(0.68)))))-0.64 or Oswald efficiency factor = (1.78*(1-(0.045*(Aspect Ratio of a wing^(0.68)))))-0.64 . The Aspect Ratio of a wing is defined as the ratio of its span to its mean chord.
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*(Aspect Ratio of a wing^(0.68)))))-0.64 . To calculate Oswald Efficiency Factor, you need Aspect Ratio of a wing (AR). With our tool, you need to enter the respective value for Aspect Ratio of a wing 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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