Fig.6

a.) C_M/4, modifying with rigid and membrane wing in and out of ground effect

x-axis = angle-of-attack = [0:2.5:40] [deg]

   Rigid,h=2  Rigid,h=0.1 Rigid,h=0.01      Mem,h=2    Mem,h=0.1   Mem,h=0.01
 -0.03530383  -0.02174617  -0.00866391  -0.00941642  -0.03934272  -0.06418848
 -0.10408021  -0.15290792  -0.16338017  -0.15330490  -0.15138516  -0.14566201
 -0.14669731  -0.14325939  -0.15491438  -0.15393945  -0.16258822  -0.03070417
 -0.02564999  -0.03449257  -0.07193116  -0.10856659  -0.17123385  -0.19634360
 -0.20082335  -0.20037571  -0.20266550  -0.21123347  -0.21116811  -0.22677087
 -0.22236282  -0.22673161  -0.22719012  -0.23357994  -0.07034605  -0.08020437
 -0.10853946  -0.14514840  -0.19946092  -0.23911354  -0.25375307  -0.25154261
 -0.25269550  -0.25429597  -0.25620633  -0.25617319  -0.26181743  -0.26125374
 -0.26840269  -0.27168807  -0.27634487  -0.12963432  -0.12292569  -0.11798276
 -0.11656592  -0.11164422  -0.10846821  -0.10314422  -0.11549273  -0.14491727
 -0.17658044  -0.22013051  -0.26898516  -0.27192270  -0.25657433  -0.24599423
 -0.24467418  -0.24209454  -0.13562428  -0.14392854  -0.14268415  -0.13300905
 -0.12064925  -0.12459008  -0.15355150  -0.18991754  -0.25300358  -0.28601531
 -0.28658684  -0.27967274  -0.28049852  -0.28106982  -0.28555069  -0.28889118
 -0.29456020  -0.11465716  -0.17378403  -0.17264578  -0.15096609  -0.14353775
 -0.17013638  -0.20220952  -0.28648187  -0.31798180  -0.31876540  -0.31473407
 -0.31410909  -0.31576606  -0.32317180  -0.32540918  -0.32953200  -0.33227017
