I created an airfoil in Blender, exported it as an FBX file and when I imported it Unity recognizes it as a mesh. I can't seem to use this mesh in the geometry game object and have the aerodynamics work. It seems that the aerodynamics only work with Unity primitive meshes. I have a work around where I use a cube game mesh for the geometry to create a wing as described in one of the first tutorials. Then I added a game object into the geometry with my blender mesh and scaled it so that it's larger than the cube mesh. There are two drawbacks to this approach. First is the fact that it's not using the airfoil surface to compute the lift and drag forces (so I'm lying!). Second is that I can't add a control surface. Is it possible to use different meshes than the few that I've seen including sphere, cube, cylinder, capsule?