Shintorq- If any of the ribs survived the "bad day", I might suggest scanning the rib along with a reference dimension (for scaling) then using a CAD program such as Rhino 3D to retrace the surface curve over the scanned bitmap. I have successfully used that method for various unknown or modified airfoil sections. The results are typically sufficient for most CFD analysis.

Mind if I ask what UAV project this is?