Drag on Airfoil Calculator

✖Normal Force on airfoil is component of Resultant force acting on airfoil perpendicular to chord.ⓘ Normal Force on Airfoil [N]			+10% -10%
✖The Angle of Attack of Airfoil is the angle between freestream velocity and chord of the airfoil.ⓘ Angle of Attack of Airfoil [α°]			+10% -10%
✖Axial Force on airfoil is component of Resultant force acting on airfoil parallel to chord.ⓘ Axial Force on airfoil [A]			+10% -10%

✖Drag on Airfoil is the component of Resultant Force acting on airfoil parallel to freestream velocity.ⓘ Drag on Airfoil [D]

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Formula

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Drag on Airfoil

Formula

`"D" = "N"*sin("α°")+"A"*cos("α°")`

Example

`"21.33627N"="11N"*sin("8°")+"20N"*cos("8°")`

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Drag on Airfoil Solution

STEP 0: Pre-Calculation Summary

Formula Used

Drag on Airfoil = Normal Force on Airfoil*sin(Angle of Attack of Airfoil)+Axial Force on airfoil*cos(Angle of Attack of Airfoil)
D = N*sin(α°)+A*cos(α°)
This formula uses 2 Functions, 4 Variables

Functions Used

sin - Sine is a trigonometric function that describes the ratio of the length of the opposite side of a right triangle to the length of the hypotenuse., sin(Angle)
cos - Cosine of an angle is the ratio of the side adjacent to the angle to the hypotenuse of the triangle., cos(Angle)

Variables Used

Drag on Airfoil - (Measured in Newton) - Drag on Airfoil is the component of Resultant Force acting on airfoil parallel to freestream velocity.
Normal Force on Airfoil - (Measured in Newton) - Normal Force on airfoil is component of Resultant force acting on airfoil perpendicular to chord.
Angle of Attack of Airfoil - (Measured in Radian) - The Angle of Attack of Airfoil is the angle between freestream velocity and chord of the airfoil.
Axial Force on airfoil - (Measured in Newton) - Axial Force on airfoil is component of Resultant force acting on airfoil parallel to chord.

STEP 1: Convert Input(s) to Base Unit

Normal Force on Airfoil: 11 Newton --> 11 Newton No Conversion Required
Angle of Attack of Airfoil: 8 Degree --> 0.13962634015952 Radian (Check conversion here)
Axial Force on airfoil: 20 Newton --> 20 Newton No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D = N*sin(α°)+A*cos(α°) --> 11*sin(0.13962634015952)+20*cos(0.13962634015952)

Evaluating ... ...

D = 21.3362654853919

STEP 3: Convert Result to Output's Unit

21.3362654853919 Newton --> No Conversion Required

FINAL ANSWER

21.3362654853919 ≈ 21.33627 Newton <-- Drag on Airfoil

(Calculation completed in 00.004 seconds)

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Credits

Created by Vishal Anand

Indian Institute of Technology Kharagpur (IIT KGP), Kharagpur

Vishal Anand has created this Calculator and 7 more calculators!

Verified by Ayush Singh

Gautam Buddha University (GBU), Greater Noida

Ayush Singh has verified this Calculator and 100+ more calculators!

< 7 Computational Fluid Dyanmics Calculators

Drag on Airfoil

Go Drag on Airfoil = Normal Force on Airfoil*sin(Angle of Attack of Airfoil)+Axial Force on airfoil*cos(Angle of Attack of Airfoil)

Lift on Airfoil

Go Lift on Airfoil = Normal Force on Airfoil*cos(Angle of Attack of Airfoil)-Axial Force on airfoil*sin(Angle of Attack of Airfoil)

Reynolds Number for Airfoil

Go Reynolds Number = (Density of Fluid*Flow Velocity*Chord Length of Airfoil)/Dynamic Viscosity

Wall Shear Stress for Airfoil

Go Wall Shear Stress for Airfoil = 0.5*Skin friction coefficient*Flow Velocity^2*Density of Air

Y Plus

Go Y Plus = (First layer height*Friction Velocity for Airfoil)/Kinematic Viscosity

Friction Velocity for Airfoil

Go Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of Air)^0.5

Skin Friction Coefficient

Go Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30)

Drag on Airfoil Formula

Drag on Airfoil = Normal Force on Airfoil*sin(Angle of Attack of Airfoil)+Axial Force on airfoil*cos(Angle of Attack of Airfoil)
D = N*sin(α°)+A*cos(α°)

How angle of attack effects drag?

The magnitude of the drag generated by an object depends on the shape of the object and how it moves through the air. For airfoils, the drag is nearly constant at small angles (+/- 5 degrees). As the angle increases above 5 degrees, the drag quickly rises because of increased frontal area and increased boundary layer thickness.

How to Calculate Drag on Airfoil?

Drag on Airfoil calculator uses Drag on Airfoil = Normal Force on Airfoil*sin(Angle of Attack of Airfoil)+Axial Force on airfoil*cos(Angle of Attack of Airfoil) to calculate the Drag on Airfoil, The Drag on airfoil is defined as the component of resultant force acting on airfoil in the direction of freestream velocity. Drag on Airfoil is denoted by D symbol.

How to calculate Drag on Airfoil using this online calculator? To use this online calculator for Drag on Airfoil, enter Normal Force on Airfoil (N), Angle of Attack of Airfoil (α°) & Axial Force on airfoil (A) and hit the calculate button. Here is how the Drag on Airfoil calculation can be explained with given input values -> 21.33627 = 11*sin(0.13962634015952)+20*cos(0.13962634015952).

FAQ

What is Drag on Airfoil?

The Drag on airfoil is defined as the component of resultant force acting on airfoil in the direction of freestream velocity and is represented as D = N*sin(α°)+A*cos(α°) or Drag on Airfoil = Normal Force on Airfoil*sin(Angle of Attack of Airfoil)+Axial Force on airfoil*cos(Angle of Attack of Airfoil). Normal Force on airfoil is component of Resultant force acting on airfoil perpendicular to chord, The Angle of Attack of Airfoil is the angle between freestream velocity and chord of the airfoil & Axial Force on airfoil is component of Resultant force acting on airfoil parallel to chord.

How to calculate Drag on Airfoil?

The Drag on airfoil is defined as the component of resultant force acting on airfoil in the direction of freestream velocity is calculated using Drag on Airfoil = Normal Force on Airfoil*sin(Angle of Attack of Airfoil)+Axial Force on airfoil*cos(Angle of Attack of Airfoil). To calculate Drag on Airfoil, you need Normal Force on Airfoil (N), Angle of Attack of Airfoil (α°) & Axial Force on airfoil (A). With our tool, you need to enter the respective value for Normal Force on Airfoil, Angle of Attack of Airfoil & Axial Force on airfoil 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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