NACA 2421 (naca2421-il) Xfoil prediction polar at RE=200,000 Ncrit=5
| Details | Polar file |
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Airfoil: NACA 2421 (naca2421-il) Reynolds number: 200,000 Max Cl/Cd: 53.32 at α=7.25° Description: Mach=0 Ncrit=5 Source: Xfoil prediction Download polar: xf-naca2421-il-200000-n5.txt Download as CSV file: xf-naca2421-il-200000-n5.csv |
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 = 5.000
alpha CL CD CDp CM Top_Xtr Bot_Xtr
------ -------- --------- --------- -------- -------- --------
-19.250 -0.9337 0.10200 0.09591 -0.0615 1.0000 0.0683
-19.000 -0.9466 0.09656 0.09034 -0.0643 1.0000 0.0693
-18.750 -0.9603 0.09107 0.08469 -0.0670 1.0000 0.0704
-18.500 -0.9683 0.08660 0.08012 -0.0691 1.0000 0.0714
-18.250 -0.9680 0.08350 0.07701 -0.0703 1.0000 0.0722
-18.000 -0.9707 0.07994 0.07341 -0.0719 1.0000 0.0732
-17.750 -0.9747 0.07622 0.06961 -0.0735 1.0000 0.0742
-17.500 -0.9790 0.07252 0.06583 -0.0750 1.0000 0.0753
-17.250 -0.9832 0.06890 0.06209 -0.0764 1.0000 0.0764
-17.000 -0.9869 0.06540 0.05845 -0.0777 1.0000 0.0776
-16.750 -0.9872 0.06254 0.05559 -0.0785 1.0000 0.0785
-16.500 -0.9882 0.05963 0.05265 -0.0793 1.0000 0.0796
-16.250 -0.9895 0.05674 0.04970 -0.0801 1.0000 0.0807
-16.000 -0.9903 0.05399 0.04687 -0.0807 1.0000 0.0820
-15.750 -0.9905 0.05140 0.04419 -0.0811 1.0000 0.0834
-15.500 -0.9900 0.04897 0.04165 -0.0813 1.0000 0.0847
-15.250 -0.9902 0.04666 0.03935 -0.0812 1.0000 0.0859
-15.000 -0.9904 0.04447 0.03713 -0.0810 1.0000 0.0871
-14.750 -0.9901 0.04244 0.03505 -0.0805 1.0000 0.0885
-14.500 -0.9895 0.04058 0.03314 -0.0797 1.0000 0.0900
-14.250 -0.9887 0.03891 0.03139 -0.0786 1.0000 0.0916
-14.000 -0.9893 0.03733 0.02976 -0.0771 1.0000 0.0930
-13.750 -0.9920 0.03579 0.02823 -0.0752 1.0000 0.0943
-13.500 -0.9950 0.03445 0.02686 -0.0729 1.0000 0.0957
-13.250 -0.9985 0.03329 0.02566 -0.0701 1.0000 0.0973
-13.000 -1.0028 0.03227 0.02459 -0.0669 1.0000 0.0989
-12.750 -1.0078 0.03139 0.02364 -0.0633 1.0000 0.1005
-12.500 -1.0075 0.03035 0.02261 -0.0608 0.9988 0.1021
-12.250 -0.9863 0.02922 0.02145 -0.0620 0.9948 0.1048
-12.000 -0.9618 0.02828 0.02044 -0.0633 0.9916 0.1080
-11.750 -0.9410 0.02734 0.01947 -0.0637 0.9863 0.1109
-11.500 -0.9181 0.02646 0.01858 -0.0645 0.9817 0.1141
-11.250 -0.8903 0.02572 0.01777 -0.0658 0.9784 0.1180
-11.000 -0.8710 0.02498 0.01702 -0.0655 0.9716 0.1212
-10.750 -0.8454 0.02427 0.01630 -0.0662 0.9669 0.1251
-10.500 -0.8138 0.02365 0.01560 -0.0678 0.9638 0.1297
-10.250 -0.7968 0.02301 0.01499 -0.0666 0.9553 0.1332
-10.000 -0.7692 0.02241 0.01436 -0.0673 0.9500 0.1379
-9.750 -0.7445 0.02186 0.01377 -0.0672 0.9437 0.1422
-9.500 -0.7232 0.02131 0.01323 -0.0665 0.9356 0.1466
-9.250 -0.6933 0.02079 0.01266 -0.0673 0.9309 0.1519
-9.000 -0.6749 0.02033 0.01221 -0.0659 0.9218 0.1561
-8.750 -0.6499 0.01985 0.01172 -0.0657 0.9152 0.1614
-8.500 -0.6228 0.01941 0.01124 -0.0657 0.9093 0.1668
-8.250 -0.6039 0.01900 0.01087 -0.0643 0.8997 0.1719
-8.000 -0.5763 0.01858 0.01041 -0.0644 0.8936 0.1782
-7.750 -0.5554 0.01822 0.01007 -0.0632 0.8845 0.1838
-7.500 -0.5309 0.01785 0.00970 -0.0627 0.8765 0.1907
-7.250 -0.5052 0.01749 0.00933 -0.0623 0.8691 0.1977
-7.000 -0.4830 0.01720 0.00905 -0.0613 0.8592 0.2052
-6.750 -0.4560 0.01686 0.00870 -0.0611 0.8520 0.2132
-6.500 -0.4335 0.01662 0.00846 -0.0601 0.8418 0.2216
-6.250 -0.4076 0.01633 0.00816 -0.0597 0.8330 0.2302
-6.000 -0.3831 0.01611 0.00793 -0.0590 0.8236 0.2395
-5.750 -0.3581 0.01586 0.00768 -0.0584 0.8140 0.2483
-5.500 -0.3322 0.01566 0.00745 -0.0580 0.8046 0.2582
-5.250 -0.3078 0.01544 0.00724 -0.0573 0.7941 0.2673
-5.000 -0.2814 0.01527 0.00702 -0.0569 0.7847 0.2774
-4.750 -0.2570 0.01507 0.00684 -0.0561 0.7738 0.2863
-4.500 -0.2306 0.01492 0.00663 -0.0557 0.7640 0.2962
-4.250 -0.2059 0.01475 0.00647 -0.0550 0.7527 0.3048
-4.000 -0.1798 0.01460 0.00628 -0.0545 0.7426 0.3144
-3.750 -0.1548 0.01446 0.00614 -0.0539 0.7309 0.3235
-3.500 -0.1292 0.01433 0.00598 -0.0533 0.7203 0.3336
-3.250 -0.1040 0.01422 0.00586 -0.0527 0.7086 0.3432
-3.000 -0.0786 0.01410 0.00573 -0.0521 0.6978 0.3542
-2.750 -0.0535 0.01400 0.00562 -0.0515 0.6863 0.3653
-2.500 -0.0281 0.01390 0.00552 -0.0509 0.6760 0.3777
-2.250 -0.0032 0.01380 0.00544 -0.0502 0.6650 0.3903
-2.000 0.0223 0.01374 0.00536 -0.0496 0.6552 0.4046
-1.750 0.0470 0.01365 0.00531 -0.0489 0.6444 0.4200
-1.500 0.0721 0.01358 0.00526 -0.0482 0.6347 0.4363
-1.250 0.0969 0.01351 0.00524 -0.0475 0.6245 0.4538
-0.750 0.1465 0.01341 0.00524 -0.0461 0.6064 0.4973
-0.500 0.1712 0.01338 0.00524 -0.0454 0.5972 0.5199
-0.250 0.1963 0.01336 0.00527 -0.0447 0.5882 0.5396
0.000 0.2215 0.01337 0.00528 -0.0440 0.5787 0.5581
0.250 0.2467 0.01338 0.00532 -0.0434 0.5705 0.5762
0.500 0.2720 0.01338 0.00538 -0.0427 0.5620 0.5933
0.750 0.2975 0.01342 0.00541 -0.0421 0.5542 0.6096
1.000 0.3230 0.01346 0.00549 -0.0415 0.5464 0.6269
1.250 0.3479 0.01349 0.00557 -0.0408 0.5378 0.6442
1.500 0.3729 0.01355 0.00563 -0.0401 0.5295 0.6614
1.750 0.3976 0.01360 0.00573 -0.0393 0.5200 0.6787
2.000 0.4220 0.01369 0.00581 -0.0385 0.5107 0.6959
2.250 0.4461 0.01374 0.00594 -0.0376 0.5005 0.7136
2.500 0.4700 0.01384 0.00605 -0.0366 0.4910 0.7321
2.750 0.4945 0.01393 0.00619 -0.0358 0.4829 0.7511
3.000 0.5187 0.01403 0.00634 -0.0349 0.4746 0.7703
3.250 0.5427 0.01417 0.00649 -0.0340 0.4671 0.7898
3.500 0.5670 0.01429 0.00669 -0.0331 0.4587 0.8093
3.750 0.5909 0.01445 0.00687 -0.0321 0.4509 0.8288
4.000 0.6153 0.01463 0.00709 -0.0312 0.4435 0.8487
4.250 0.6397 0.01482 0.00732 -0.0303 0.4350 0.8695
4.500 0.6644 0.01507 0.00755 -0.0295 0.4274 0.8896
4.750 0.6907 0.01529 0.00781 -0.0290 0.4191 0.9076
5.000 0.7168 0.01555 0.00805 -0.0286 0.4109 0.9228
5.250 0.7475 0.01583 0.00832 -0.0292 0.4025 0.9342
5.500 0.7753 0.01611 0.00858 -0.0293 0.3935 0.9465
5.750 0.8061 0.01642 0.00886 -0.0301 0.3851 0.9567
6.000 0.8374 0.01674 0.00916 -0.0310 0.3754 0.9657
6.250 0.8680 0.01710 0.00947 -0.0319 0.3663 0.9750
6.500 0.9020 0.01746 0.00981 -0.0336 0.3558 0.9815
6.750 0.9343 0.01784 0.01016 -0.0350 0.3462 0.9889
7.000 0.9663 0.01822 0.01051 -0.0364 0.3359 0.9951
7.250 0.9901 0.01857 0.01084 -0.0362 0.3274 1.0000
7.500 0.9892 0.01874 0.01100 -0.0311 0.3206 1.0000
7.750 0.9898 0.01901 0.01121 -0.0264 0.3139 1.0000
8.000 0.9970 0.01928 0.01149 -0.0229 0.3067 1.0000
8.250 1.0044 0.01965 0.01183 -0.0196 0.2990 1.0000
8.500 1.0143 0.02007 0.01223 -0.0168 0.2915 1.0000
8.750 1.0259 0.02053 0.01269 -0.0145 0.2831 1.0000
9.000 1.0369 0.02109 0.01320 -0.0122 0.2755 1.0000
9.250 1.0499 0.02163 0.01375 -0.0103 0.2669 1.0000
9.500 1.0607 0.02231 0.01440 -0.0082 0.2593 1.0000
9.750 1.0739 0.02297 0.01505 -0.0065 0.2511 1.0000
10.000 1.0838 0.02380 0.01584 -0.0046 0.2438 1.0000
10.250 1.0965 0.02456 0.01661 -0.0031 0.2362 1.0000
10.500 1.1054 0.02555 0.01755 -0.0013 0.2292 1.0000
10.750 1.1176 0.02643 0.01845 0.0001 0.2223 1.0000
11.000 1.1269 0.02751 0.01950 0.0016 0.2157 1.0000
11.250 1.1375 0.02857 0.02057 0.0029 0.2099 1.0000
11.500 1.1481 0.02967 0.02169 0.0041 0.2039 1.0000
11.750 1.1555 0.03099 0.02299 0.0055 0.1986 1.0000
12.000 1.1672 0.03210 0.02415 0.0064 0.1932 1.0000
12.250 1.1760 0.03344 0.02551 0.0074 0.1877 1.0000
12.500 1.1829 0.03494 0.02701 0.0085 0.1830 1.0000
12.750 1.1933 0.03626 0.02839 0.0092 0.1776 1.0000
13.000 1.1999 0.03789 0.03004 0.0100 0.1725 1.0000
13.250 1.2070 0.03954 0.03172 0.0108 0.1679 1.0000
13.500 1.2147 0.04121 0.03344 0.0113 0.1627 1.0000
13.750 1.2187 0.04322 0.03546 0.0119 0.1582 1.0000
14.000 1.2257 0.04504 0.03733 0.0124 0.1535 1.0000
14.250 1.2303 0.04712 0.03945 0.0127 0.1488 1.0000
14.500 1.2326 0.04946 0.04181 0.0130 0.1448 1.0000
14.750 1.2381 0.05157 0.04398 0.0132 0.1403 1.0000
15.000 1.2400 0.05405 0.04650 0.0133 0.1362 1.0000
15.250 1.2418 0.05661 0.04909 0.0133 0.1325 1.0000
15.500 1.2446 0.05912 0.05167 0.0133 0.1284 1.0000
15.750 1.2443 0.06200 0.05457 0.0131 0.1249 1.0000
16.000 1.2452 0.06479 0.05742 0.0129 0.1215 1.0000
16.250 1.2461 0.06763 0.06033 0.0126 0.1179 1.0000
16.500 1.2443 0.07082 0.06354 0.0122 0.1148 1.0000
16.750 1.2437 0.07391 0.06668 0.0117 0.1118 1.0000
17.000 1.2436 0.07699 0.06984 0.0112 0.1086 1.0000
17.250 1.2409 0.08041 0.07330 0.0105 0.1057 1.0000
17.500 1.2384 0.08383 0.07676 0.0098 0.1032 1.0000
17.750 1.2380 0.08705 0.08007 0.0090 0.1003 1.0000
18.000 1.2349 0.09065 0.08373 0.0081 0.0976 1.0000
18.250 1.2307 0.09438 0.08747 0.0071 0.0954 1.0000
18.500 1.2299 0.09775 0.09094 0.0061 0.0928 1.0000
18.750 1.2269 0.10144 0.09470 0.0049 0.0903 1.0000
19.000 1.2235 0.10517 0.09846 0.0037 0.0882 1.0000
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