Hello,
I followed this post to link FASTv8 to Aerodyn 15.04. After replacing all files in Source/AeroDyn, I also got the error about the function “Rad2M180to180Deg.” And I just simply replaced the library file NWTC_Num.f90. Then it works pretty well for me and solves the issue about “no valid value of phi” in BEMT. I use the linux version and compile in a unix system server.
Best Regards,
Nan-You