it may be useful to note that my goal is to change the angle of attack using the parameters set. i know i can just change the velocity X and Y but i thought i'd use the rotation function in the geometry and then use it as an output parameter so that i don't have to mesh everytime i change the AoA. but i keep having problems when the AoA changes, mainly in the meshing process. i have changed my geometry many times so i do not know how to go about it.

Many thanks,