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Xfoil Interface

version 1.3 (3.87 KB) by

Run Xfoil from Matlab. This is an interface to the original XFoil program.

10 Ratings



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This simple function will use a system call to run Xfoil. It then loads the results into a data structure which you can then use in your Matlab script.

For example to deflect the trailing edge of a NACA0009 by 5deg at 65% chord and run multiple incidence angles...
[pol foil] = xfoil('NACA0009',[-5:15],1e6,0.2,'oper iter 150','gdes flap 0.65 0 5 exec')
The coefficents will be returned in the pol structure while the foil data and pressure distribution will be returned in foil structure.

XFOIL, first developed by Mark Drela at MIT, is a program for the design and analysis of subsonic isolated airfoils and is released under the GNU General Public License.
You can find Xfoil here:

Comments and Ratings (15)

I type in the following from the examples and get the following error.
>> foil = xfoil('NACA0012',10,1e6,0.2,'oper/vpar n 12')
Index exceeds matrix dimensions.

Error in xfoil (line 229)

Reuben Lew

I had this error,
Error using perl (line 79)
System error: The system cannot find the path specified.
Couldn't open coeffs.txt for reading: No such file or directory at line 10.
Command executed: perl 5.00000 1000000 0.20000 0012
anyone has any idea?

samuel farah

I had this error:
Attempted to access P.%cell(1); index out of bounds because numel(P.%cell)=0.

Error in xfoil (line 229)
pol.xtrf_top = P{1}(1);

Any help?



I have the following error :

Error using xfoil (line 158)
Xfoil execution failed! cd H:\Documents\Iboat\Xfoil && xfoil.exe < xfoil.inp > xfoil.out

Xfoil.exe is in the right directory, I checked everything and I cannot find what is wrong. Can you help me?

Thank you


anybody please give some idea about, how to develop matlab code for interpolation ('INTE') option in XFOIL.



How can I to work with another airfoil as xxx.dat/xxx.txt? Please ...any one that help me.


Jorge (view profile)

Fadi Kahwash

Thanks a lot for the useful code.
I'm gonna use it in my MSc project, with due acknowledgment of course...

Fantastic:) Is there a way to suppress the xfoil window?

Sönke N

A note for linux users:
probably a workaround for some gfortran environment variables has to be applied.


Pierre (view profile)

Absolutely impressive !
I just made some modifications in order to run it on a Linux config, but really very few.
Very great work !

David Pate


Pavel (view profile)

Nate Jensen



Fixed a typo in the description.


Fixed typo in description.

MATLAB Release
MATLAB 7.4 (R2007a)

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