The SourceForge.net website describes the application as
XFLR5 includes the xfoil program for foil analysis, and several 3d analysis methods for planes :
- a non-linear lifting line method for standalone wings
- two vortex-lattice and a 3d panel method for the analysis of aerodynamic performance of wings and plane operating at low Reynolds numbers
The latest v6 version introduces stability analysis of planes.
I'm not sure what all this means. I'm interested in modeling biplane configurations. Will this do it? Is each vortex lattice bound to a wing?