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-   -   NACA 4 and 5 digit modified eqations (http://www.cfd-online.com/Forums/main/97131-naca-4-5-digit-modified-eqations.html)

Tom A February 9, 2012 11:11

NACA 4 and 5 digit modified eqations
 
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

Martin Hegedus February 9, 2012 11:16

Why don't you download the code (NACA456) from pdas? http://www.pdas.com/naca456.html

Tom A February 9, 2012 11:23

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.

rwryne February 9, 2012 12:12

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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