airfoil coordinates
 

Hey guys
i am working on tilet rotor in cfd..just a flow analysis over the proprotor blades. but i need airfoil coordinates for XN28 and etc,,coz each 5 sections having 5 different airfoil. i searched everywhere but i cant find t..atleast the airfoil coordinates used in v-22 osprey..i require airfoil sections XN28, XN18, XN12, XN09

Now I'm looking for these airfoil sections(XN28, XN18, XN12, XN09). I saw your article. If you found the coordinates, can you give me or direct me?:)

Thank you.

Those are almost certainly proprietary airfoils. The chances of you finding them are slim to none.