XFOIL Version 6.96 Calculated polar for: NACA 4421 1 1 Reynolds number fixed Mach number fixed xtrf = 1.000 (top) 1.000 (bottom) Mach = 0.000 Re = 0.200 e 6 Ncrit = 9.000 alpha CL CD CDp CM Top_Xtr Bot_Xtr ------ -------- --------- --------- -------- -------- -------- -16.250 -0.8642 0.06424 0.05861 -0.1012 1.0000 0.0823 -16.000 -0.9048 0.05865 0.05282 -0.1021 1.0000 0.0827 -15.750 -0.9373 0.05457 0.04858 -0.1015 1.0000 0.0831 -15.500 -0.9666 0.05133 0.04519 -0.0999 1.0000 0.0837 -15.250 -0.9952 0.04863 0.04234 -0.0973 1.0000 0.0842 -15.000 -1.0239 0.04636 0.03992 -0.0939 1.0000 0.0847 -14.750 -1.0533 0.04448 0.03788 -0.0896 1.0000 0.0851 -14.500 -1.0833 0.04298 0.03621 -0.0843 1.0000 0.0855 -14.250 -1.0938 0.04196 0.03518 -0.0803 1.0000 0.0863 -14.000 -1.0974 0.04133 0.03462 -0.0767 0.9999 0.0871 -13.750 -1.0746 0.04045 0.03376 -0.0779 0.9961 0.0888 -13.500 -1.0601 0.03928 0.03244 -0.0784 0.9918 0.0907 -13.250 -1.0511 0.03775 0.03062 -0.0779 0.9851 0.0927 -13.000 -1.0216 0.03669 0.02960 -0.0796 0.9815 0.0947 -12.750 -0.9884 0.03598 0.02892 -0.0818 0.9788 0.0971 -12.500 -0.9744 0.03495 0.02773 -0.0809 0.9711 0.0995 -12.250 -0.9473 0.03376 0.02640 -0.0822 0.9668 0.1023 -12.000 -0.9096 0.03317 0.02591 -0.0849 0.9645 0.1053 -11.750 -0.8964 0.03241 0.02502 -0.0832 0.9557 0.1081 -11.500 -0.8659 0.03139 0.02390 -0.0847 0.9518 0.1116 -11.250 -0.8271 0.03078 0.02335 -0.0874 0.9495 0.1153 -11.000 -0.8153 0.03018 0.02258 -0.0851 0.9401 0.1186 -10.750 -0.7814 0.02934 0.02179 -0.0868 0.9363 0.1225 -10.500 -0.7435 0.02873 0.02115 -0.0892 0.9337 0.1272 -10.250 -0.7276 0.02813 0.02039 -0.0875 0.9256 0.1309 -10.000 -0.6949 0.02755 0.01994 -0.0888 0.9209 0.1350 -9.750 -0.6591 0.02695 0.01918 -0.0906 0.9178 0.1403 -9.500 -0.6179 0.02613 0.01844 -0.0935 0.9159 0.1452 -9.250 -0.6010 0.02583 0.01812 -0.0916 0.9072 0.1491 -9.000 -0.5691 0.02524 0.01736 -0.0925 0.9025 0.1539 -8.750 -0.5279 0.02449 0.01675 -0.0952 0.9002 0.1589 -8.500 -0.4880 0.02388 0.01604 -0.0975 0.8981 0.1645 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0.3180 -3.250 0.1225 0.01567 0.00773 -0.0990 0.7518 0.3304 -3.000 0.1456 0.01553 0.00766 -0.0979 0.7410 0.3421 -2.750 0.1766 0.01532 0.00740 -0.0983 0.7332 0.3554 -2.500 0.1993 0.01526 0.00738 -0.0972 0.7225 0.3684 -2.250 0.2278 0.01508 0.00721 -0.0971 0.7143 0.3825 -2.000 0.2530 0.01501 0.00716 -0.0965 0.7050 0.3979 -1.750 0.2792 0.01490 0.00707 -0.0960 0.6959 0.4159 -1.500 0.3066 0.01479 0.00700 -0.0958 0.6876 0.4364 -1.250 0.3301 0.01469 0.00700 -0.0948 0.6781 0.4592 -1.000 0.3590 0.01459 0.00691 -0.0949 0.6708 0.4878 -0.750 0.3813 0.01453 0.00700 -0.0937 0.6619 0.5176 -0.500 0.4063 0.01442 0.00702 -0.0930 0.6538 0.5519 -0.250 0.4332 0.01440 0.00707 -0.0926 0.6465 0.5897 0.000 0.4551 0.01438 0.00722 -0.0912 0.6380 0.6274 0.250 0.4814 0.01437 0.00729 -0.0906 0.6311 0.6660 0.500 0.5063 0.01444 0.00744 -0.0897 0.6241 0.7022 0.750 0.5290 0.01447 0.00758 -0.0884 0.6162 0.7357 1.000 0.5554 0.01451 0.00766 -0.0877 0.6095 0.7683 1.250 0.5789 0.01463 0.00786 -0.0864 0.6024 0.8000 1.500 0.6013 0.01472 0.00802 -0.0849 0.5946 0.8305 1.750 0.6286 0.01486 0.00812 -0.0842 0.5882 0.8588 2.000 0.6539 0.01508 0.00839 -0.0832 0.5813 0.8857 2.250 0.6823 0.01529 0.00862 -0.0829 0.5741 0.9104 2.500 0.7187 0.01552 0.00876 -0.0842 0.5679 0.9308 2.750 0.7561 0.01583 0.00903 -0.0860 0.5613 0.9478 3.000 0.7952 0.01609 0.00928 -0.0883 0.5541 0.9625 3.250 0.8459 0.01633 0.00942 -0.0929 0.5474 0.9710 3.500 0.8941 0.01664 0.00968 -0.0972 0.5407 0.9805 3.750 0.9427 0.01688 0.00992 -0.1016 0.5331 0.9907 4.250 1.0212 0.01726 0.01016 -0.1070 0.5207 1.0000 4.500 1.0287 0.01739 0.01032 -0.1035 0.5147 1.0000 4.750 1.0424 0.01751 0.01040 -0.1011 0.5090 1.0000 5.000 1.0653 0.01773 0.01048 -0.1003 0.5037 1.0000 5.250 1.0729 0.01794 0.01076 -0.0967 0.4981 1.0000 5.500 1.0853 0.01812 0.01095 -0.0938 0.4920 1.0000 5.750 1.1048 0.01829 0.01104 -0.0923 0.4863 1.0000 6.000 1.1250 0.01858 0.01128 -0.0910 0.4807 1.0000 6.250 1.1343 0.01881 0.01156 -0.0876 0.4745 1.0000 6.500 1.1521 0.01900 0.01172 -0.0858 0.4683 1.0000 6.750 1.1796 0.01927 0.01187 -0.0859 0.4622 1.0000 7.000 1.1849 0.01951 0.01221 -0.0817 0.4552 1.0000 7.250 1.2000 0.01966 0.01232 -0.0794 0.4477 1.0000 7.500 1.2183 0.01990 0.01249 -0.0778 0.4402 1.0000 7.750 1.2230 0.02013 0.01279 -0.0736 0.4325 1.0000 8.000 1.2411 0.02035 0.01292 -0.0720 0.4257 1.0000 8.250 1.2533 0.02073 0.01333 -0.0694 0.4190 1.0000 8.500 1.2631 0.02108 0.01372 -0.0665 0.4118 1.0000 8.750 1.2850 0.02138 0.01391 -0.0656 0.4051 1.0000 9.000 1.2918 0.02189 0.01452 -0.0624 0.3980 1.0000 9.250 1.3035 0.02232 0.01496 -0.0600 0.3908 1.0000 9.500 1.3228 0.02273 0.01529 -0.0589 0.3841 1.0000 9.750 1.3283 0.02338 0.01605 -0.0558 0.3765 1.0000 10.000 1.3432 0.02386 0.01647 -0.0542 0.3696 1.0000 10.250 1.3534 0.02454 0.01720 -0.0520 0.3623 1.0000 10.500 1.3621 0.02525 0.01795 -0.0496 0.3548 1.0000 10.750 1.3776 0.02585 0.01847 -0.0483 0.3478 1.0000 11.000 1.3822 0.02681 0.01954 -0.0457 0.3401 1.0000 11.250 1.3954 0.02752 0.02017 -0.0442 0.3331 1.0000 11.500 1.4012 0.02859 0.02133 -0.0420 0.3255 1.0000 11.750 1.4092 0.02957 0.02231 -0.0401 0.3180 1.0000 12.000 1.4172 0.03065 0.02340 -0.0383 0.3106 1.0000 12.250 1.4224 0.03190 0.02469 -0.0364 0.3028 1.0000 12.500 1.4312 0.03303 0.02577 -0.0349 0.2956 1.0000 12.750 1.4335 0.03457 0.02740 -0.0330 0.2877 1.0000 13.000 1.4423 0.03577 0.02850 -0.0316 0.2803 1.0000 13.250 1.4417 0.03767 0.03052 -0.0299 0.2722 1.0000 13.500 1.4501 0.03897 0.03170 -0.0286 0.2646 1.0000 13.750 1.4475 0.04122 0.03410 -0.0271 0.2565 1.0000 14.000 1.4543 0.04272 0.03546 -0.0259 0.2488 1.0000 14.250 1.4494 0.04535 0.03825 -0.0246 0.2405 1.0000 14.500 1.4536 0.04715 0.03993 -0.0235 0.2328 1.0000 14.750 1.4480 0.05007 0.04300 -0.0226 0.2245 1.0000 15.000 1.4493 0.05227 0.04510 -0.0217 0.2170 1.0000 15.250 1.4441 0.05536 0.04830 -0.0211 0.2091 1.0000 15.500 1.4446 0.05775 0.05062 -0.0204 0.2022 1.0000 15.750 1.4401 0.06092 0.05389 -0.0201 0.1951 1.0000 16.000 1.4426 0.06317 0.05603 -0.0196 0.1892 1.0000 16.250 1.4393 0.06634 0.05934 -0.0194 0.1833 1.0000 16.500 1.4409 0.06884 0.06180 -0.0192 0.1782 1.0000 16.750 1.4423 0.07140 0.06439 -0.0190 0.1733 1.0000 17.000 1.4412 0.07437 0.06743 -0.0190 0.1686 1.0000 17.250 1.4477 0.07625 0.06922 -0.0187 0.1644 1.0000 17.500 1.4463 0.07932 0.07240 -0.0189 0.1603 1.0000 17.750 1.4463 0.08223 0.07537 -0.0191 0.1563 1.0000 18.000 1.4538 0.08400 0.07705 -0.0189 0.1526 1.0000 18.250 1.4530 0.08700 0.08015 -0.0192 0.1491 1.0000 18.500 1.4523 0.09006 0.08330 -0.0196 0.1455 1.0000 18.750 1.4567 0.09234 0.08556 -0.0198 0.1422 1.0000 19.000 1.4636 0.09424 0.08743 -0.0198 0.1390 1.0000 19.250 1.4589 0.09792 0.09126 -0.0206 0.1359 1.0000