WEBGeometry. The ONERA M6 wing is a swept, semi-span wing with no twist. It uses a symmetric airfoil using the ONERA D section. The coordinates of the airfoil section at the (y/b) = 0.0 plane are listed on Page 7 and also in a picture of [] (Download Accessible PDF Plug-in) of the Schmitt and Charpin report. The file airfoil.txt is an ASCII text file containing these coordinates.