NACA 4421 (naca4421-il) Xfoil prediction polar at RE=500,000 Ncrit=9
| Details | Polar file |
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Airfoil: NACA 4421 (naca4421-il) Reynolds number: 500,000 Max Cl/Cd: 83.3 at α=5.75° Description: Mach=0 Ncrit=9 Source: Xfoil prediction Download polar: xf-naca4421-il-500000.txt Download as CSV file: xf-naca4421-il-500000.csv |
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 = 0.500 e 6 Ncrit = 9.000
alpha CL CD CDp CM Top_Xtr Bot_Xtr
------ -------- --------- --------- -------- -------- --------
-19.750 -0.9257 0.08876 0.08422 -0.0908 1.0000 0.0525
-19.500 -0.9314 0.08493 0.08034 -0.0926 1.0000 0.0530
-19.250 -0.9378 0.08112 0.07646 -0.0942 1.0000 0.0535
-19.000 -0.9460 0.07712 0.07239 -0.0959 1.0000 0.0540
-18.750 -0.9550 0.07315 0.06833 -0.0975 1.0000 0.0545
-18.500 -0.9644 0.06929 0.06436 -0.0989 1.0000 0.0550
-18.250 -0.9744 0.06547 0.06044 -0.1001 1.0000 0.0554
-18.000 -0.9779 0.06303 0.05803 -0.1000 1.0000 0.0560
-17.750 -0.9860 0.06003 0.05502 -0.1003 1.0000 0.0566
-17.500 -0.9969 0.05682 0.05176 -0.1005 1.0000 0.0570
-17.250 -1.0092 0.05366 0.04855 -0.1005 1.0000 0.0575
-17.000 -1.0224 0.05062 0.04546 -0.1001 1.0000 0.0580
-16.750 -1.0365 0.04771 0.04248 -0.0994 1.0000 0.0585
-16.500 -1.0515 0.04495 0.03966 -0.0983 1.0000 0.0590
-16.250 -1.0670 0.04241 0.03705 -0.0967 1.0000 0.0595
-16.000 -1.0829 0.04007 0.03463 -0.0948 1.0000 0.0599
-15.750 -1.0763 0.03758 0.03202 -0.0965 0.9986 0.0607
-15.500 -1.0668 0.03458 0.02901 -0.0996 0.9960 0.0619
-15.250 -1.0506 0.03228 0.02666 -0.1026 0.9937 0.0630
-15.000 -1.0301 0.03042 0.02473 -0.1055 0.9919 0.0644
-14.750 -1.0129 0.02885 0.02306 -0.1069 0.9880 0.0657
-14.500 -0.9953 0.02716 0.02133 -0.1086 0.9843 0.0671
-14.250 -0.9738 0.02570 0.01985 -0.1106 0.9816 0.0687
-14.000 -0.9471 0.02460 0.01870 -0.1126 0.9798 0.0707
-13.750 -0.9246 0.02368 0.01770 -0.1134 0.9760 0.0725
-13.500 -0.9066 0.02260 0.01664 -0.1136 0.9709 0.0745
-13.250 -0.8776 0.02180 0.01581 -0.1151 0.9685 0.0770
-13.000 -0.8472 0.02098 0.01496 -0.1168 0.9666 0.0798
-12.750 -0.8167 0.02024 0.01422 -0.1184 0.9648 0.0828
-12.500 -0.8009 0.01981 0.01373 -0.1166 0.9571 0.0854
-12.250 -0.7780 0.01911 0.01305 -0.1164 0.9528 0.0883
-12.000 -0.7487 0.01860 0.01251 -0.1171 0.9499 0.0917
-11.750 -0.7324 0.01816 0.01204 -0.1153 0.9424 0.0946
-11.500 -0.7091 0.01770 0.01159 -0.1147 0.9371 0.0978
-11.250 -0.6808 0.01737 0.01116 -0.1148 0.9333 0.1012
-11.000 -0.6640 0.01691 0.01074 -0.1131 0.9260 0.1043
-10.750 -0.6401 0.01659 0.01039 -0.1124 0.9201 0.1076
-10.500 -0.6137 0.01626 0.00998 -0.1122 0.9155 0.1108
-10.250 -0.5939 0.01587 0.00962 -0.1109 0.9084 0.1137
-10.000 -0.5695 0.01560 0.00932 -0.1102 0.9019 0.1168
-9.750 -0.5416 0.01538 0.00900 -0.1101 0.8968 0.1197
-9.500 -0.5211 0.01497 0.00863 -0.1089 0.8893 0.1229
-9.250 -0.4963 0.01471 0.00835 -0.1083 0.8824 0.1260
-9.000 -0.4682 0.01449 0.00805 -0.1083 0.8768 0.1290
-8.750 -0.4458 0.01420 0.00775 -0.1073 0.8689 0.1320
-8.500 -0.4209 0.01390 0.00745 -0.1067 0.8617 0.1352
-8.250 -0.3939 0.01370 0.00720 -0.1065 0.8551 0.1384
-8.000 -0.3686 0.01355 0.00699 -0.1059 0.8470 0.1411
-7.750 -0.3436 0.01320 0.00664 -0.1053 0.8396 0.1447
-7.500 -0.3181 0.01298 0.00642 -0.1048 0.8321 0.1482
-7.250 -0.2921 0.01282 0.00621 -0.1044 0.8240 0.1516
-6.750 -0.2410 0.01236 0.00572 -0.1033 0.8079 0.1595
-6.500 -0.2143 0.01220 0.00551 -0.1030 0.7995 0.1639
-6.250 -0.1882 0.01201 0.00530 -0.1026 0.7917 0.1687
-6.000 -0.1629 0.01181 0.00513 -0.1020 0.7826 0.1748
-5.750 -0.1358 0.01169 0.00494 -0.1017 0.7742 0.1817
-5.500 -0.1108 0.01149 0.00481 -0.1011 0.7647 0.1896
-5.250 -0.0843 0.01136 0.00464 -0.1007 0.7557 0.1979
-5.000 -0.0582 0.01124 0.00454 -0.1003 0.7467 0.2073
-4.750 -0.0321 0.01112 0.00442 -0.0998 0.7372 0.2169
-4.500 -0.0051 0.01108 0.00434 -0.0995 0.7278 0.2266
-4.250 0.0206 0.01096 0.00425 -0.0990 0.7175 0.2369
-4.000 0.0477 0.01096 0.00418 -0.0986 0.7079 0.2454
-3.750 0.0731 0.01083 0.00408 -0.0981 0.6976 0.2549
-3.500 0.0999 0.01082 0.00401 -0.0977 0.6882 0.2629
-3.250 0.1257 0.01073 0.00393 -0.0972 0.6781 0.2712
-3.000 0.1516 0.01071 0.00386 -0.0967 0.6683 0.2796
-2.750 0.1779 0.01067 0.00381 -0.0963 0.6581 0.2874
-2.500 0.2032 0.01064 0.00376 -0.0957 0.6483 0.2969
-2.250 0.2297 0.01061 0.00373 -0.0953 0.6390 0.3054
-2.000 0.2551 0.01058 0.00369 -0.0947 0.6298 0.3158
-1.750 0.2814 0.01056 0.00368 -0.0943 0.6212 0.3265
-1.500 0.3068 0.01052 0.00366 -0.0938 0.6122 0.3400
-1.250 0.3324 0.01051 0.00366 -0.0933 0.6039 0.3556
-1.000 0.3582 0.01047 0.00367 -0.0928 0.5955 0.3744
-0.750 0.3835 0.01048 0.00368 -0.0922 0.5877 0.3958
-0.500 0.4093 0.01043 0.00371 -0.0918 0.5806 0.4194
-0.250 0.4346 0.01040 0.00374 -0.0912 0.5730 0.4451
0.000 0.4595 0.01042 0.00379 -0.0906 0.5655 0.4733
0.250 0.4847 0.01034 0.00384 -0.0900 0.5583 0.5043
0.500 0.5093 0.01033 0.00389 -0.0893 0.5506 0.5373
0.750 0.5335 0.01033 0.00398 -0.0886 0.5433 0.5732
1.000 0.5585 0.01028 0.00407 -0.0879 0.5371 0.6125
1.250 0.5830 0.01027 0.00416 -0.0872 0.5307 0.6500
1.500 0.6077 0.01036 0.00427 -0.0865 0.5244 0.6813
1.750 0.6328 0.01036 0.00438 -0.0858 0.5191 0.7102
2.000 0.6574 0.01037 0.00449 -0.0850 0.5132 0.7388
2.250 0.6814 0.01043 0.00460 -0.0842 0.5076 0.7668
2.500 0.7058 0.01053 0.00475 -0.0834 0.5021 0.7951
2.750 0.7294 0.01055 0.00489 -0.0823 0.4970 0.8250
3.000 0.7523 0.01061 0.00503 -0.0811 0.4916 0.8559
3.250 0.7740 0.01074 0.00520 -0.0796 0.4864 0.8875
3.500 0.7966 0.01091 0.00539 -0.0783 0.4813 0.9182
3.750 0.8208 0.01102 0.00556 -0.0773 0.4764 0.9445
4.000 0.8516 0.01121 0.00574 -0.0779 0.4708 0.9635
4.250 0.8863 0.01148 0.00595 -0.0794 0.4653 0.9778
4.500 0.9265 0.01173 0.00618 -0.0821 0.4598 0.9872
4.750 0.9686 0.01194 0.00640 -0.0853 0.4539 0.9938
5.000 1.0126 0.01222 0.00663 -0.0889 0.4479 0.9995
5.250 1.0213 0.01237 0.00671 -0.0853 0.4428 1.0000
5.500 1.0293 0.01240 0.00677 -0.0815 0.4386 1.0000
5.750 1.0421 0.01251 0.00688 -0.0786 0.4330 1.0000
6.000 1.0571 0.01271 0.00703 -0.0763 0.4269 1.0000
6.250 1.0745 0.01294 0.00723 -0.0745 0.4206 1.0000
6.500 1.0927 0.01313 0.00743 -0.0728 0.4135 1.0000
6.750 1.1097 0.01343 0.00767 -0.0710 0.4063 1.0000
7.000 1.1294 0.01368 0.00793 -0.0698 0.3998 1.0000
7.250 1.1490 0.01396 0.00820 -0.0685 0.3931 1.0000
7.500 1.1665 0.01434 0.00853 -0.0670 0.3865 1.0000
7.750 1.1870 0.01463 0.00884 -0.0659 0.3802 1.0000
8.000 1.2059 0.01498 0.00919 -0.0647 0.3732 1.0000
8.250 1.2227 0.01544 0.00961 -0.0632 0.3663 1.0000
8.500 1.2425 0.01580 0.00999 -0.0622 0.3589 1.0000
8.750 1.2586 0.01632 0.01046 -0.0607 0.3512 1.0000
9.000 1.2769 0.01677 0.01093 -0.0595 0.3439 1.0000
9.250 1.2933 0.01732 0.01146 -0.0581 0.3360 1.0000
9.500 1.3093 0.01791 0.01204 -0.0568 0.3285 1.0000
9.750 1.3252 0.01853 0.01265 -0.0554 0.3202 1.0000
10.000 1.3393 0.01925 0.01334 -0.0539 0.3124 1.0000
10.250 1.3546 0.01994 0.01403 -0.0527 0.3043 1.0000
10.500 1.3668 0.02081 0.01487 -0.0511 0.2968 1.0000
10.750 1.3821 0.02155 0.01563 -0.0499 0.2894 1.0000
11.000 1.3923 0.02258 0.01661 -0.0482 0.2819 1.0000
11.250 1.4068 0.02341 0.01747 -0.0471 0.2750 1.0000
11.500 1.4165 0.02454 0.01857 -0.0455 0.2672 1.0000
11.750 1.4285 0.02558 0.01962 -0.0443 0.2601 1.0000
12.000 1.4380 0.02679 0.02082 -0.0429 0.2524 1.0000
12.250 1.4477 0.02804 0.02208 -0.0416 0.2454 1.0000
12.500 1.4568 0.02937 0.02341 -0.0403 0.2376 1.0000
12.750 1.4647 0.03084 0.02487 -0.0391 0.2304 1.0000
13.000 1.4723 0.03237 0.02641 -0.0379 0.2223 1.0000
13.250 1.4785 0.03404 0.02808 -0.0367 0.2146 1.0000
13.500 1.4828 0.03592 0.02995 -0.0355 0.2062 1.0000
13.750 1.4874 0.03784 0.03188 -0.0345 0.1977 1.0000
14.000 1.4868 0.04025 0.03426 -0.0333 0.1892 1.0000
14.250 1.4909 0.04231 0.03633 -0.0324 0.1808 1.0000
14.500 1.4905 0.04482 0.03884 -0.0314 0.1734 1.0000
14.750 1.4899 0.04742 0.04145 -0.0306 0.1663 1.0000
15.000 1.4900 0.05000 0.04403 -0.0299 0.1600 1.0000
15.250 1.4880 0.05282 0.04686 -0.0292 0.1540 1.0000
15.500 1.4865 0.05565 0.04971 -0.0286 0.1491 1.0000
15.750 1.4856 0.05847 0.05257 -0.0282 0.1443 1.0000
16.000 1.4803 0.06178 0.05588 -0.0277 0.1401 1.0000
16.250 1.4824 0.06434 0.05850 -0.0275 0.1364 1.0000
16.500 1.4802 0.06738 0.06157 -0.0272 0.1328 1.0000
16.750 1.4746 0.07083 0.06502 -0.0270 0.1295 1.0000
17.000 1.4769 0.07347 0.06773 -0.0270 0.1267 1.0000
17.250 1.4772 0.07632 0.07063 -0.0270 0.1237 1.0000
17.500 1.4727 0.07973 0.07406 -0.0271 0.1211 1.0000
17.750 1.4704 0.08289 0.07724 -0.0271 0.1186 1.0000
18.000 1.4725 0.08563 0.08006 -0.0274 0.1163 1.0000
18.250 1.4731 0.08852 0.08300 -0.0276 0.1139 1.0000
18.500 1.4701 0.09188 0.08639 -0.0280 0.1116 1.0000
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