Mariana Podolan

I'm trying to make this simulation, but when i use highers values of alpha, i get this error. What is it? I read the F.A.Q : Why do I get the message "Point is out of the flight envelope ?" but i couldn't understant what i am doing wrong. I use version 6.39 MacOS. Launching the 3D Panel Analysis.... Plane Name Type 1 - Fixed speed polar Wings as thin surfaces Using horseshoe vortices- VLM1 Using Neumann boundary conditions for wings Density = 1.225kg/m3 Viscosity = 1.5e-5m²/s Reference Area = 0.29m²...