I don't know how many people have seen or heard of Gmsh, but Gmsh is basically a freeware, multiplatform (Linux, Mac OS X, Windows etc) three-dimensional finite element mesh generator with built-in pre- and post-processing facilities.
Cool hey? Not only can one now Q-cad, but you can gmsh too! Apparently it's not quite as powerful as ANSYS ( ), but theses guys are getting there!
Now there's absolutely no excuse whatsoever for building that aeroplane you've always been dreaming about!