DU40 airfoil with an aspect ratio of 17. Original -180 to 180deg Cl, Cd, and Cm versus AOA data taken from Appendix A of DOWEC document 10046_009.pdf (numerical values obtained from Koert Lindenburg of ECN). Cl and Cd values corrected for rotational stall delay and Cd values corrected using the Viterna method for 0 to 90deg AOA by Jason Jonkman using AirfoilPrep_v2p0.xls. 1 Number of airfoil tables in this file 0.0 Table ID parameter 9.00 Stall angle (deg) 0.0 No longer used, enter zero 0.0 No longer used, enter zero 0.0 No longer used, enter zero -1.3430 Zero Cn angle of attack (deg) 7.4888 Cn slope for zero lift (dimensionless) 1.3519 Cn extrapolated to value at positive stall angle of attack -0.3226 Cn at stall value for negative angle of attack 0.00 Angle of attack for minimum CD (deg) 0.0113 Minimum CD value -180.00 0.000 0.0602 0.0000 -175.00 0.218 0.0699 0.0934 -170.00 0.397 0.1107 0.1697 -160.00 0.642 0.3045 0.2813 -155.00 0.715 0.4179 0.3208 -150.00 0.757 0.5355 0.3516 -145.00 0.772 0.6535 0.3752 -140.00 0.762 0.7685 0.3926 -135.00 0.731 0.8777 0.4048 -130.00 0.680 0.9788 0.4126 -125.00 0.613 1.0700 0.4166 -120.00 0.532 1.1499 0.4176 -115.00 0.439 1.2174 0.4158 -110.00 0.337 1.2716 0.4117 -105.00 0.228 1.3118 0.4057 -100.00 0.114 1.3378 0.3979 -95.00 -0.002 1.3492 0.3887 -90.00 -0.120 1.3460 0.3781 -85.00 -0.236 1.3283 0.3663 -80.00 -0.349 1.2964 0.3534 -75.00 -0.456 1.2507 0.3394 -70.00 -0.557 1.1918 0.3244 -65.00 -0.647 1.1204 0.3084 -60.00 -0.727 1.0376 0.2914 -55.00 -0.792 0.9446 0.2733 -50.00 -0.842 0.8429 0.2543 -45.00 -0.874 0.7345 0.2342 -40.00 -0.886 0.6215 0.2129 -35.00 -0.875 0.5067 0.1906 -30.00 -0.839 0.3932 0.1670 -25.00 -0.777 0.2849 0.1422 -24.00 -0.761 0.2642 0.1371 -23.00 -0.744 0.2440 0.1320 -22.00 -0.725 0.2242 0.1268 -21.00 -0.706 0.2049 0.1215 -20.00 -0.685 0.1861 0.1162 -19.00 -0.662 0.1687 0.1097 -18.00 -0.635 0.1533 0.1012 -17.00 -0.605 0.1398 0.0907 -16.00 -0.571 0.1281 0.0784 -15.00 -0.534 0.1183 0.0646 -14.00 -0.494 0.1101 0.0494 -13.00 -0.452 0.1036 0.0330 -12.00 -0.407 0.0986 0.0156 -11.00 -0.360 0.0951 -0.0026 -10.00 -0.311 0.0931 -0.0213 -8.00 -0.208 0.0930 -0.0600 -6.00 -0.111 0.0689 -0.0500 -5.50 -0.090 0.0614 -0.0516 -5.00 -0.072 0.0547 -0.0532 -4.50 -0.065 0.0480 -0.0538 -4.00 -0.054 0.0411 -0.0544 -3.50 -0.017 0.0349 -0.0554 -3.00 0.003 0.0299 -0.0558 -2.50 0.014 0.0255 -0.0555 -2.00 0.009 0.0198 -0.0534 -1.50 0.004 0.0164 -0.0442 -1.00 0.036 0.0147 -0.0469 -0.50 0.073 0.0137 -0.0522 0.00 0.137 0.0113 -0.0573 0.50 0.213 0.0114 -0.0644 1.00 0.292 0.0118 -0.0718 1.50 0.369 0.0122 -0.0783 2.00 0.444 0.0124 -0.0835 2.50 0.514 0.0124 -0.0866 3.00 0.580 0.0123 -0.0887 3.50 0.645 0.0120 -0.0900 4.00 0.710 0.0119 -0.0914 4.50 0.776 0.0122 -0.0933 5.00 0.841 0.0125 -0.0947 5.50 0.904 0.0129 -0.0957 6.00 0.967 0.0135 -0.0967 6.50 1.027 0.0144 -0.0973 7.00 1.084 0.0158 -0.0972 7.50 1.140 0.0174 -0.0972 8.00 1.193 0.0198 -0.0968 8.50 1.242 0.0231 -0.0958 9.00 1.287 0.0275 -0.0948 9.50 1.333 0.0323 -0.0942 10.00 1.368 0.0393 -0.0926 10.50 1.400 0.0475 -0.0908 11.00 1.425 0.0580 -0.0890 11.50 1.449 0.0691 -0.0877 12.00 1.473 0.0816 -0.0870 12.50 1.494 0.0973 -0.0870 13.00 1.513 0.1129 -0.0876 13.50 1.538 0.1288 -0.0886 14.50 1.587 0.1650 -0.0917 15.00 1.614 0.1845 -0.0939 15.50 1.631 0.2052 -0.0966 16.00 1.649 0.2250 -0.0996 16.50 1.666 0.2467 -0.1031 17.00 1.681 0.2684 -0.1069 17.50 1.699 0.2900 -0.1110 18.00 1.719 0.3121 -0.1157 19.00 1.751 0.3554 -0.1242 19.50 1.767 0.3783 -0.1291 20.50 1.798 0.4212 -0.1384 21.00 1.810 0.4415 -0.1416 22.00 1.830 0.4830 -0.1479 23.00 1.847 0.5257 -0.1542 24.00 1.861 0.5694 -0.1603 25.00 1.872 0.6141 -0.1664 26.00 1.881 0.6593 -0.1724 28.00 1.894 0.7513 -0.1841 30.00 1.904 0.8441 -0.1954 32.00 1.915 0.9364 -0.2063 35.00 1.929 1.0722 -0.2220 40.00 1.903 1.2873 -0.2468 45.00 1.820 1.4796 -0.2701 50.00 1.690 1.6401 -0.2921 55.00 1.522 1.7609 -0.3127 60.00 1.323 1.8360 -0.3321 65.00 1.106 1.8614 -0.3502 70.00 0.880 1.8347 -0.3672 75.00 0.658 1.7567 -0.3830 80.00 0.449 1.6334 -0.3977 85.00 0.267 1.4847 -0.4112 90.00 0.124 1.3879 -0.4234 95.00 0.002 1.3912 -0.4343 100.00 -0.118 1.3795 -0.4437 105.00 -0.235 1.3528 -0.4514 110.00 -0.348 1.3114 -0.4573 115.00 -0.453 1.2557 -0.4610 120.00 -0.549 1.1864 -0.4623 125.00 -0.633 1.1041 -0.4606 130.00 -0.702 1.0102 -0.4554 135.00 -0.754 0.9060 -0.4462 140.00 -0.787 0.7935 -0.4323 145.00 -0.797 0.6750 -0.4127 150.00 -0.782 0.5532 -0.3863 155.00 -0.739 0.4318 -0.3521 160.00 -0.664 0.3147 -0.3085 170.00 -0.410 0.1144 -0.1858 175.00 -0.226 0.0702 -0.1022 180.00 0.000 0.0602 0.0000