Quick question - Is it preferable to have a notch in the wing (associated with a live hinge control surface, like #1) on the top or bottom?
The application is a low Re (~10^5) tailless craft, so there is upwards deflection at high alpha. XFLR5 indicates that tripping the boundary layer on the underside is beneficial for control authority, but I don't trust it to tell me if a notch would trip the flow or separate it. If the notch is on the upper surface, bottom trip is controlled and the notch is inside a thick boundary layer, but once again I don't trust XFLR5 to tell me how that notch affects the layer. I'm leaning towards top surface.
The application is a low Re (~10^5) tailless craft, so there is upwards deflection at high alpha. XFLR5 indicates that tripping the boundary layer on the underside is beneficial for control authority, but I don't trust it to tell me if a notch would trip the flow or separate it. If the notch is on the upper surface, bottom trip is controlled and the notch is inside a thick boundary layer, but once again I don't trust XFLR5 to tell me how that notch affects the layer. I'm leaning towards top surface.
