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 = 0.200 e 6 Ncrit = 9.000 alpha CL CD CDp CM Top_Xtr Bot_Xtr ------ -------- --------- --------- -------- -------- -------- -18.000 -1.0082 0.07506 0.06900 -0.0819 1.0000 0.0906 -17.750 -1.0471 0.06761 0.06125 -0.0854 1.0000 0.0913 -17.500 -1.0778 0.06179 0.05514 -0.0876 1.0000 0.0920 -17.250 -1.0881 0.05824 0.05144 -0.0882 1.0000 0.0929 -17.000 -1.0651 0.05784 0.05119 -0.0876 1.0000 0.0944 -16.750 -1.0596 0.05598 0.04932 -0.0877 1.0000 0.0957 -16.500 -1.0637 0.05334 0.04658 -0.0879 1.0000 0.0970 -16.250 -1.0726 0.05045 0.04353 -0.0879 1.0000 0.0983 -16.000 -1.0837 0.04762 0.04051 -0.0874 1.0000 0.0995 -15.750 -1.0972 0.04499 0.03766 -0.0863 1.0000 0.1005 -15.500 -1.0794 0.04399 0.03675 -0.0856 1.0000 0.1022 -15.250 -1.0688 0.04294 0.03576 -0.0846 1.0000 0.1037 -15.000 -1.0663 0.04159 0.03438 -0.0832 1.0000 0.1053 -14.750 -1.0694 0.04008 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0.1500 -10.000 -0.9347 0.02626 0.01835 -0.0389 0.9734 0.1551 -9.750 -0.9010 0.02566 0.01780 -0.0407 0.9679 0.1606 -9.500 -0.8623 0.02502 0.01708 -0.0434 0.9644 0.1672 -9.250 -0.8357 0.02443 0.01659 -0.0437 0.9572 0.1727 -9.000 -0.8017 0.02395 0.01599 -0.0453 0.9518 0.1797 -8.750 -0.7623 0.02325 0.01544 -0.0480 0.9488 0.1869 -8.500 -0.7365 0.02288 0.01498 -0.0479 0.9412 0.1937 -8.250 -0.7027 0.02228 0.01451 -0.0494 0.9358 0.2010 -8.000 -0.6624 0.02184 0.01398 -0.0521 0.9326 0.2097 -7.750 -0.6194 0.02123 0.01351 -0.0553 0.9305 0.2185 -7.500 -0.5995 0.02099 0.01317 -0.0538 0.9203 0.2258 -7.250 -0.5615 0.02041 0.01273 -0.0559 0.9163 0.2347 -7.000 -0.5219 0.01990 0.01219 -0.0582 0.9133 0.2449 -6.750 -0.4970 0.01956 0.01192 -0.0576 0.9052 0.2534 -6.500 -0.4665 0.01912 0.01146 -0.0581 0.8985 0.2634 -6.250 -0.4304 0.01864 0.01102 -0.0595 0.8944 0.2744 -6.000 -0.4047 0.01826 0.01068 -0.0590 0.8865 0.2845 -5.750 -0.3773 0.01794 0.01035 -0.0587 0.8784 0.2957 -5.500 -0.3434 0.01740 0.00988 -0.0597 0.8735 0.3075 -5.250 -0.3213 0.01725 0.00965 -0.0584 0.8632 0.3186 -5.000 -0.2920 0.01678 0.00929 -0.0584 0.8558 0.3304 -4.750 -0.2621 0.01644 0.00893 -0.0585 0.8487 0.3427 -4.500 -0.2388 0.01618 0.00872 -0.0574 0.8377 0.3539 -4.250 -0.2071 0.01579 0.00832 -0.0578 0.8309 0.3662 -4.000 -0.1848 0.01562 0.00817 -0.0566 0.8189 0.3777 -3.750 -0.1548 0.01527 0.00784 -0.0566 0.8106 0.3900 -3.500 -0.1311 0.01513 0.00768 -0.0556 0.7988 0.4028 -3.250 -0.1023 0.01481 0.00741 -0.0555 0.7897 0.4159 -3.000 -0.0782 0.01465 0.00728 -0.0545 0.7777 0.4297 -2.750 -0.0498 0.01445 0.00704 -0.0543 0.7682 0.4457 -2.500 -0.0261 0.01429 0.00698 -0.0533 0.7563 0.4611 -2.250 0.0016 0.01411 0.00681 -0.0530 0.7468 0.4788 -2.000 0.0254 0.01402 0.00678 -0.0520 0.7351 0.4974 -1.750 0.0527 0.01389 0.00665 -0.0516 0.7253 0.5179 -1.500 0.0766 0.01384 0.00666 -0.0506 0.7140 0.5387 -1.250 0.1033 0.01376 0.00659 -0.0501 0.7044 0.5605 -1.000 0.1277 0.01374 0.00663 -0.0492 0.6939 0.5827 -0.750 0.1534 0.01370 0.00662 -0.0484 0.6841 0.6059 -0.500 0.1785 0.01371 0.00667 -0.0476 0.6743 0.6285 -0.250 0.2038 0.01367 0.00670 -0.0468 0.6640 0.6490 0.000 0.2304 0.01369 0.00674 -0.0462 0.6548 0.6683 0.250 0.2551 0.01369 0.00681 -0.0453 0.6448 0.6874 0.500 0.2834 0.01375 0.00682 -0.0450 0.6367 0.7065 0.750 0.3068 0.01379 0.00695 -0.0439 0.6265 0.7252 1.000 0.3338 0.01384 0.00698 -0.0434 0.6179 0.7440 1.250 0.3585 0.01392 0.00714 -0.0424 0.6081 0.7618 1.500 0.3844 0.01399 0.00722 -0.0416 0.5985 0.7798 1.750 0.4097 0.01410 0.00735 -0.0407 0.5889 0.7978 2.000 0.4338 0.01418 0.00742 -0.0396 0.5783 0.8162 2.250 0.4596 0.01434 0.00757 -0.0387 0.5685 0.8331 2.500 0.4846 0.01449 0.00776 -0.0377 0.5587 0.8494 2.750 0.5124 0.01472 0.00791 -0.0373 0.5505 0.8659 3.000 0.5346 0.01488 0.00813 -0.0358 0.5410 0.8834 3.250 0.5663 0.01516 0.00833 -0.0360 0.5324 0.8959 3.500 0.5940 0.01542 0.00862 -0.0357 0.5232 0.9099 3.750 0.6219 0.01566 0.00882 -0.0353 0.5145 0.9250 4.000 0.6637 0.01603 0.00915 -0.0378 0.5052 0.9328 4.250 0.6985 0.01632 0.00943 -0.0390 0.4954 0.9454 4.500 0.7497 0.01671 0.00972 -0.0435 0.4859 0.9509 4.750 0.7869 0.01695 0.00999 -0.0454 0.4758 0.9617 5.000 0.8362 0.01724 0.01016 -0.0498 0.4661 0.9661 5.250 0.8760 0.01745 0.01041 -0.0524 0.4556 0.9747 5.500 0.9203 0.01768 0.01053 -0.0560 0.4458 0.9806 5.750 0.9623 0.01785 0.01074 -0.0592 0.4344 0.9879 6.000 1.0050 0.01807 0.01088 -0.0625 0.4239 0.9939 6.250 1.0481 0.01824 0.01104 -0.0660 0.4123 0.9999 6.500 1.0582 0.01839 0.01115 -0.0632 0.4044 1.0000 6.750 1.0645 0.01851 0.01129 -0.0595 0.3960 1.0000 7.000 1.0751 0.01873 0.01138 -0.0566 0.3884 1.0000 7.250 1.0776 0.01887 0.01160 -0.0522 0.3800 1.0000 7.500 1.0836 0.01907 0.01173 -0.0483 0.3722 1.0000 7.750 1.0877 0.01930 0.01196 -0.0441 0.3642 1.0000 8.000 1.0898 0.01951 0.01215 -0.0395 0.3561 1.0000 8.250 1.0956 0.01980 0.01236 -0.0356 0.3485 1.0000 8.500 1.0924 0.02000 0.01260 -0.0300 0.3407 1.0000 8.750 1.0988 0.02034 0.01283 -0.0263 0.3330 1.0000 9.000 1.1032 0.02071 0.01323 -0.0224 0.3248 1.0000 9.250 1.1119 0.02113 0.01361 -0.0193 0.3166 1.0000 9.500 1.1223 0.02164 0.01410 -0.0167 0.3085 1.0000 9.750 1.1316 0.02215 0.01462 -0.0140 0.3001 1.0000 10.000 1.1436 0.02276 0.01515 -0.0119 0.2923 1.0000 10.250 1.1524 0.02337 0.01582 -0.0094 0.2840 1.0000 10.500 1.1648 0.02406 0.01640 -0.0076 0.2765 1.0000 10.750 1.1735 0.02479 0.01723 -0.0054 0.2685 1.0000 11.000 1.1850 0.02557 0.01790 -0.0036 0.2613 1.0000 11.250 1.1943 0.02644 0.01885 -0.0018 0.2539 1.0000 11.500 1.2042 0.02734 0.01971 -0.0001 0.2471 1.0000 11.750 1.2145 0.02832 0.02070 0.0015 0.2403 1.0000 12.000 1.2232 0.02937 0.02177 0.0031 0.2335 1.0000 12.250 1.2343 0.03043 0.02274 0.0044 0.2272 1.0000 12.500 1.2414 0.03165 0.02406 0.0059 0.2208 1.0000 12.750 1.2510 0.03282 0.02515 0.0072 0.2148 1.0000 13.000 1.2586 0.03416 0.02655 0.0084 0.2088 1.0000 13.250 1.2651 0.03556 0.02799 0.0096 0.2029 1.0000 13.500 1.2759 0.03678 0.02910 0.0106 0.1973 1.0000 13.750 1.2790 0.03851 0.03098 0.0117 0.1919 1.0000 14.000 1.2848 0.04009 0.03256 0.0127 0.1866 1.0000 14.250 1.2919 0.04166 0.03412 0.0135 0.1815 1.0000 14.500 1.2946 0.04363 0.03620 0.0143 0.1763 1.0000 14.750 1.3005 0.04535 0.03788 0.0149 0.1717 1.0000 15.000 1.3039 0.04739 0.03998 0.0155 0.1669 1.0000 15.250 1.3058 0.04962 0.04229 0.0159 0.1621 1.0000 15.500 1.3126 0.05135 0.04393 0.0164 0.1577 1.0000 15.750 1.3118 0.05401 0.04673 0.0166 0.1533 1.0000 16.000 1.3132 0.05646 0.04924 0.0167 0.1489 1.0000 16.250 1.3194 0.05833 0.05102 0.0170 0.1449 1.0000 16.500 1.3164 0.06143 0.05428 0.0168 0.1407 1.0000 16.750 1.3178 0.06401 0.05688 0.0167 0.1368 1.0000 17.000 1.3228 0.06611 0.05893 0.0168 0.1331 1.0000 17.250 1.3191 0.06945 0.06241 0.0164 0.1293 1.0000 17.500 1.3205 0.07212 0.06510 0.0161 0.1258 1.0000 17.750 1.3257 0.07424 0.06717 0.0161 0.1224 1.0000 18.000 1.3203 0.07792 0.07101 0.0153 0.1191 1.0000 18.250 1.3220 0.08064 0.07374 0.0148 0.1160 1.0000 18.500 1.3318 0.08216 0.07515 0.0150 0.1131 1.0000 18.750 1.3233 0.08638 0.07957 0.0139 0.1104 1.0000 19.000 1.3226 0.08950 0.08275 0.0131 0.1077 1.0000 19.250 1.3303 0.09137 0.08456 0.0128 0.1053 1.0000