XFOIL Version 6.96 Calculated polar for: NACA 2421 1 1 Reynolds number fixed Mach number fixed xtrf = 1.000 (top) 1.000 (bottom) Mach = 0.000 Re = 1.000 e 6 Ncrit = 9.000 alpha CL CD CDp CM Top_Xtr Bot_Xtr ------ -------- --------- --------- -------- -------- -------- -19.750 -1.2049 0.07395 0.06962 -0.0689 1.0000 0.0531 -19.500 -1.2117 0.06993 0.06551 -0.0705 1.0000 0.0535 -19.250 -1.2217 0.06561 0.06110 -0.0722 1.0000 0.0541 -19.000 -1.2371 0.06071 0.05613 -0.0740 1.0000 0.0547 -18.750 -1.2482 0.05639 0.05174 -0.0755 1.0000 0.0554 -18.500 -1.2557 0.05258 0.04786 -0.0768 1.0000 0.0560 -18.250 -1.2601 0.04919 0.04441 -0.0778 1.0000 0.0567 -18.000 -1.2616 0.04619 0.04134 -0.0786 1.0000 0.0573 -17.750 -1.2610 0.04351 0.03859 -0.0792 1.0000 0.0580 -17.500 -1.2583 0.04111 0.03612 -0.0797 1.0000 0.0586 -17.250 -1.2533 0.03898 0.03391 -0.0800 1.0000 0.0592 -17.000 -1.2585 0.03598 0.03086 -0.0802 1.0000 0.0601 -16.750 -1.2579 0.03366 0.02850 -0.0802 1.0000 0.0609 -16.500 -1.2542 0.03173 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0.6907 3.250 0.5843 0.00843 0.00311 -0.0427 0.4202 0.7079 3.500 0.6096 0.00851 0.00321 -0.0421 0.4114 0.7269 4.000 0.6608 0.00865 0.00342 -0.0410 0.3951 0.7667 4.250 0.6853 0.00875 0.00354 -0.0403 0.3864 0.7863 4.500 0.7105 0.00883 0.00366 -0.0397 0.3778 0.8056 4.750 0.7340 0.00897 0.00382 -0.0388 0.3687 0.8253 5.000 0.7592 0.00905 0.00395 -0.0382 0.3616 0.8448 5.250 0.7825 0.00920 0.00411 -0.0372 0.3536 0.8633 5.500 0.8060 0.00933 0.00427 -0.0363 0.3470 0.8811 5.750 0.8277 0.00945 0.00443 -0.0349 0.3397 0.8986 6.000 0.8463 0.00965 0.00463 -0.0330 0.3315 0.9176 6.250 0.8680 0.00979 0.00481 -0.0315 0.3258 0.9361 6.500 0.8882 0.01001 0.00504 -0.0299 0.3180 0.9522 6.750 0.9107 0.01025 0.00526 -0.0288 0.3103 0.9650 7.000 0.9357 0.01049 0.00548 -0.0283 0.3019 0.9758 7.250 0.9667 0.01081 0.00575 -0.0292 0.2922 0.9819 7.500 0.9976 0.01115 0.00603 -0.0301 0.2806 0.9878 7.750 1.0292 0.01151 0.00633 -0.0313 0.2674 0.9919 8.000 1.0624 0.01195 0.00668 -0.0329 0.2522 0.9941 8.250 1.0943 0.01240 0.00705 -0.0343 0.2395 0.9968 8.500 1.1248 0.01289 0.00746 -0.0355 0.2284 0.9996 8.750 1.1321 0.01309 0.00766 -0.0318 0.2231 1.0000 9.000 1.1372 0.01339 0.00793 -0.0278 0.2172 1.0000 9.250 1.1491 0.01373 0.00824 -0.0252 0.2114 1.0000 9.500 1.1649 0.01408 0.00858 -0.0233 0.2062 1.0000 9.750 1.1800 0.01455 0.00902 -0.0215 0.2002 1.0000 10.000 1.1978 0.01495 0.00942 -0.0202 0.1954 1.0000 10.250 1.2156 0.01539 0.00985 -0.0189 0.1900 1.0000 10.500 1.2307 0.01599 0.01040 -0.0173 0.1838 1.0000 10.750 1.2498 0.01642 0.01085 -0.0163 0.1794 1.0000 11.000 1.2662 0.01700 0.01140 -0.0151 0.1736 1.0000 11.250 1.2823 0.01762 0.01201 -0.0138 0.1684 1.0000 11.500 1.2995 0.01821 0.01260 -0.0128 0.1631 1.0000 11.750 1.3130 0.01901 0.01337 -0.0114 0.1573 1.0000 12.000 1.3299 0.01965 0.01401 -0.0104 0.1524 1.0000 12.250 1.3426 0.02054 0.01488 -0.0091 0.1467 1.0000 12.500 1.3575 0.02134 0.01568 -0.0080 0.1418 1.0000 12.750 1.3695 0.02234 0.01667 -0.0068 0.1364 1.0000 13.000 1.3824 0.02331 0.01763 -0.0057 0.1319 1.0000 13.250 1.3942 0.02438 0.01870 -0.0046 0.1274 1.0000 13.500 1.4039 0.02562 0.01994 -0.0034 0.1230 1.0000 13.750 1.4164 0.02671 0.02105 -0.0026 0.1193 1.0000 14.000 1.4250 0.02812 0.02245 -0.0015 0.1153 1.0000 14.250 1.4349 0.02945 0.02381 -0.0006 0.1119 1.0000 14.500 1.4442 0.03089 0.02526 0.0002 0.1083 1.0000 14.750 1.4498 0.03267 0.02704 0.0011 0.1046 1.0000 15.000 1.4596 0.03413 0.02854 0.0017 0.1015 1.0000 15.250 1.4657 0.03594 0.03037 0.0024 0.0982 1.0000 15.500 1.4698 0.03799 0.03243 0.0031 0.0950 1.0000 15.750 1.4774 0.03975 0.03423 0.0035 0.0921 1.0000 16.000 1.4805 0.04197 0.03646 0.0040 0.0891 1.0000 16.250 1.4835 0.04425 0.03877 0.0044 0.0864 1.0000 16.500 1.4874 0.04647 0.04103 0.0048 0.0837 1.0000 16.750 1.4874 0.04910 0.04369 0.0050 0.0809 1.0000 17.000 1.4890 0.05166 0.04629 0.0052 0.0786 1.0000 17.250 1.4895 0.05435 0.04903 0.0053 0.0762 1.0000 17.500 1.4867 0.05741 0.05212 0.0053 0.0740 1.0000 17.750 1.4860 0.06029 0.05504 0.0052 0.0720 1.0000 18.000 1.4845 0.06334 0.05815 0.0050 0.0701 1.0000 18.250 1.4799 0.06674 0.06159 0.0048 0.0683 1.0000 18.500 1.4737 0.07034 0.06523 0.0045 0.0665 1.0000 18.750 1.4721 0.07349 0.06846 0.0040 0.0651 1.0000 19.000 1.4676 0.07700 0.07202 0.0035 0.0637 1.0000 19.250 1.4617 0.08072 0.07578 0.0029 0.0623 1.0000