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NACA 4 and 5 digit modified eqations

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Old   February 9, 2012, 11:11
Default NACA 4 and 5 digit modified eqations
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Tom
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Hello, I want to examine several types of foils in FLUENT but I am having trouble making the geometry for NACA 4 digit modified and NACA 5 digit modified foils. I have made equations for calculating the coordinates of the standard 4 and 5 series foils but the equations for the modified versions are not making sense to me.

http://www.pdas.com/naca456pdas.html

This website has the equations, I just cant figure out how to use them. Specifically how to find the coefficients in the 4-digit thickness function.

Can anyone here explain them in greater detail or even provide a sample calculation?


Thanks,

Tom
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Old   February 9, 2012, 11:16
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Martin Hegedus
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Why don't you download the code (NACA456) from pdas? http://www.pdas.com/naca456.html
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Old   February 9, 2012, 11:23
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I actually did not even notice that was there. Thanks. I would still like to know how it is calculated though its really been bothering me.
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Old   February 9, 2012, 12:12
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Ryne Whitehill
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Alternatively, this site will let you enter the parameters and give you points:

http://www.mh-aerotools.de/airfoils/javafoil.htm
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