Errors importing Aerodyn files about ccblade

[gbarter]

Would you be able to post the input file you are using so that we more easily test out and debug the issue?

[sunnyxxchen]

This file produces the spline fitting error.
C3_01-02_Circle.dat.txt

This file causes the IndexError.
C3_03_2Cir+1S818.dat.txt

(I appended .txt so that I could upload these files to Github, but you can remove them.)

[gbarter]

Thanks, there is a common error in both files and an additional error in the C3_O3_2Cir+1S818.dat file. This was difficult to see because the errors were so abstruse. I have tried to add some additional checks and warnings among the changes in #22. If you update your local checkout with these changes, you will have to rebuild and reinstall, even if you did pip install -e or python setup.py develop as there are changes to the underlying Fortran source.

In both files, you were missing the Control Setting parameter line in each polar, which you can see here. In the second file (C3_O3_2Cir+1S818.dat), your airfoil polar data is missing the moment coefficient column. The entries on each polar line are:
alpha cl cd cm

Here is the updated version of your first file that runs fine.
C3_01-02_Circle-revised.dat.txt

[sunnyxxchen]

Thanks for getting back to me. The missing data does seem to be causing my error. Is there an option to import the data without providing the moment coefficient information? In the Aerodyn .ipt file, I can specify whether or not to use a pitching moment model (re: AeroDyn V13 manual, pg. 7). I do not believe that I would need this information for my application.

[gbarter]

You can just use zero for the moment coefficient with CCBlade and things should work.

[sunnyxxchen]

Thank you for your help!