Output the angular velocities of a blade segment

Hello,
I’m currently also interested in the output of angular velocities of blade segments. These velocities have to be in the blade coordinate system and should be equal to the measurements a gyroscope mounted on the blade would output.

I’m using a workaround by extraction of the blade segments coordinate system from the vtp files and calculation of angular velocities from the change of orientation. This works somehow, but is computationally heavy and uncomfortable as I have to parse hundreds of files.

As I am not familiar with Fortran at all, I somehow went into troubles trying to implement the above mentioned code. So I would kindly ask if someone can tell me exactly what to change in the source code to enable output of angular velocities. And is the desired element/node J configurable via config file or hard coded?

Thanks in advance.
Best regards
Eike