NACA 2421 (naca2421-il) Xfoil prediction polar at RE=500,000 Ncrit=5
| Details | Polar file |
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Airfoil: NACA 2421 (naca2421-il) Reynolds number: 500,000 Max Cl/Cd: 67.58 at α=7.5° Description: Mach=0 Ncrit=5 Source: Xfoil prediction Download polar: xf-naca2421-il-500000-n5.txt Download as CSV file: xf-naca2421-il-500000-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 = 0.500 e 6 Ncrit = 5.000
alpha CL CD CDp CM Top_Xtr Bot_Xtr
------ -------- --------- --------- -------- -------- --------
-19.500 -1.0668 0.08840 0.08336 -0.0636 1.0000 0.0538
-19.250 -1.0762 0.08388 0.07880 -0.0656 1.0000 0.0544
-19.000 -1.0857 0.07938 0.07423 -0.0675 1.0000 0.0550
-18.750 -1.0947 0.07500 0.06978 -0.0693 1.0000 0.0556
-18.500 -1.1025 0.07081 0.06552 -0.0710 1.0000 0.0563
-18.250 -1.1091 0.06684 0.06147 -0.0725 1.0000 0.0570
-18.000 -1.1143 0.06311 0.05766 -0.0739 1.0000 0.0577
-17.750 -1.1178 0.05964 0.05410 -0.0752 1.0000 0.0585
-17.500 -1.1197 0.05642 0.05079 -0.0762 1.0000 0.0591
-17.250 -1.1266 0.05272 0.04703 -0.0774 1.0000 0.0598
-17.000 -1.1310 0.04938 0.04363 -0.0783 1.0000 0.0605
-16.750 -1.1332 0.04639 0.04058 -0.0790 1.0000 0.0613
-16.500 -1.1337 0.04369 0.03781 -0.0795 1.0000 0.0621
-16.250 -1.1327 0.04125 0.03530 -0.0798 1.0000 0.0629
-16.000 -1.1303 0.03904 0.03302 -0.0798 1.0000 0.0638
-15.750 -1.1268 0.03705 0.03097 -0.0797 1.0000 0.0646
-15.500 -1.1256 0.03500 0.02887 -0.0792 1.0000 0.0655
-15.250 -1.1253 0.03309 0.02692 -0.0784 1.0000 0.0664
-15.000 -1.1248 0.03145 0.02524 -0.0770 1.0000 0.0674
-14.750 -1.1244 0.03003 0.02377 -0.0753 1.0000 0.0684
-14.500 -1.1249 0.02879 0.02249 -0.0730 1.0000 0.0694
-14.250 -1.1270 0.02772 0.02137 -0.0702 1.0000 0.0703
-14.000 -1.1095 0.02647 0.02008 -0.0708 0.9978 0.0716
-13.750 -1.0898 0.02522 0.01880 -0.0718 0.9950 0.0731
-13.500 -1.0674 0.02416 0.01771 -0.0730 0.9927 0.0747
-13.250 -1.0449 0.02325 0.01676 -0.0738 0.9899 0.0765
-13.000 -1.0231 0.02239 0.01586 -0.0743 0.9860 0.0783
-12.750 -1.0003 0.02149 0.01495 -0.0750 0.9826 0.0803
-12.500 -0.9753 0.02072 0.01417 -0.0759 0.9796 0.0825
-12.250 -0.9524 0.02009 0.01349 -0.0761 0.9750 0.0845
-12.000 -0.9320 0.01939 0.01279 -0.0758 0.9689 0.0867
-11.750 -0.9077 0.01875 0.01214 -0.0761 0.9644 0.0894
-11.500 -0.8878 0.01825 0.01161 -0.0753 0.9569 0.0919
-11.250 -0.8666 0.01767 0.01103 -0.0748 0.9497 0.0946
-11.000 -0.8473 0.01719 0.01053 -0.0737 0.9409 0.0976
-10.750 -0.8264 0.01677 0.01007 -0.0727 0.9322 0.1006
-10.500 -0.8084 0.01632 0.00962 -0.0712 0.9231 0.1039
-10.250 -0.7888 0.01595 0.00922 -0.0699 0.9144 0.1074
-10.000 -0.7700 0.01564 0.00888 -0.0684 0.9059 0.1106
-9.750 -0.7503 0.01530 0.00853 -0.0671 0.8967 0.1146
-9.500 -0.7278 0.01502 0.00821 -0.0662 0.8886 0.1185
-9.250 -0.7064 0.01471 0.00790 -0.0651 0.8792 0.1223
-9.000 -0.6833 0.01443 0.00759 -0.0643 0.8708 0.1266
-8.750 -0.6602 0.01420 0.00732 -0.0635 0.8611 0.1306
-8.500 -0.6372 0.01392 0.00703 -0.0626 0.8517 0.1349
-8.250 -0.6132 0.01370 0.00678 -0.0619 0.8424 0.1391
-8.000 -0.5892 0.01347 0.00652 -0.0612 0.8326 0.1432
-7.750 -0.5653 0.01324 0.00628 -0.0605 0.8226 0.1479
-7.500 -0.5405 0.01306 0.00605 -0.0599 0.8120 0.1522
-7.250 -0.5162 0.01284 0.00582 -0.0592 0.8025 0.1568
-7.000 -0.4916 0.01265 0.00560 -0.0586 0.7919 0.1620
-6.750 -0.4664 0.01249 0.00540 -0.0581 0.7817 0.1669
-6.500 -0.4420 0.01228 0.00519 -0.0574 0.7706 0.1730
-6.250 -0.4166 0.01213 0.00501 -0.0569 0.7606 0.1792
-6.000 -0.3919 0.01195 0.00483 -0.0562 0.7496 0.1866
-5.500 -0.3415 0.01165 0.00451 -0.0551 0.7279 0.2035
-5.250 -0.3160 0.01152 0.00437 -0.0546 0.7175 0.2126
-5.000 -0.2906 0.01140 0.00425 -0.0541 0.7056 0.2226
-4.750 -0.2650 0.01129 0.00413 -0.0536 0.6943 0.2318
-4.500 -0.2393 0.01122 0.00402 -0.0531 0.6816 0.2411
-4.250 -0.2136 0.01111 0.00392 -0.0526 0.6696 0.2504
-4.000 -0.1878 0.01107 0.00383 -0.0521 0.6580 0.2596
-3.750 -0.1619 0.01096 0.00374 -0.0516 0.6469 0.2687
-3.500 -0.1359 0.01092 0.00366 -0.0512 0.6361 0.2769
-3.250 -0.1096 0.01085 0.00359 -0.0508 0.6250 0.2846
-3.000 -0.0838 0.01081 0.00352 -0.0503 0.6146 0.2927
-2.750 -0.0568 0.01077 0.00346 -0.0500 0.6050 0.2997
-2.500 -0.0313 0.01071 0.00340 -0.0495 0.5954 0.3086
-2.250 -0.0044 0.01067 0.00336 -0.0492 0.5866 0.3172
-2.000 0.0215 0.01063 0.00331 -0.0487 0.5769 0.3256
-1.750 0.0478 0.01060 0.00328 -0.0483 0.5681 0.3355
-1.500 0.0739 0.01056 0.00325 -0.0479 0.5586 0.3460
-1.250 0.0999 0.01055 0.00323 -0.0474 0.5502 0.3578
-1.000 0.1264 0.01049 0.00321 -0.0471 0.5426 0.3699
-0.750 0.1525 0.01048 0.00320 -0.0467 0.5346 0.3835
-0.500 0.1784 0.01044 0.00320 -0.0462 0.5278 0.4000
-0.250 0.2048 0.01038 0.00320 -0.0459 0.5206 0.4167
0.000 0.2301 0.01036 0.00322 -0.0453 0.5125 0.4367
0.250 0.2556 0.01031 0.00324 -0.0448 0.5043 0.4618
0.500 0.2808 0.01028 0.00327 -0.0442 0.4947 0.4863
0.750 0.3059 0.01029 0.00331 -0.0436 0.4859 0.5063
1.000 0.3319 0.01029 0.00335 -0.0431 0.4770 0.5245
1.250 0.3569 0.01034 0.00340 -0.0425 0.4685 0.5416
1.500 0.3834 0.01036 0.00346 -0.0421 0.4600 0.5582
1.750 0.4083 0.01041 0.00352 -0.0415 0.4504 0.5732
2.000 0.4342 0.01045 0.00359 -0.0410 0.4428 0.5873
2.250 0.4601 0.01050 0.00366 -0.0406 0.4350 0.6023
2.500 0.4846 0.01058 0.00375 -0.0399 0.4275 0.6178
2.750 0.5107 0.01061 0.00383 -0.0395 0.4200 0.6338
3.000 0.5354 0.01070 0.00393 -0.0388 0.4114 0.6500
3.250 0.5602 0.01076 0.00404 -0.0381 0.4040 0.6655
3.500 0.5853 0.01084 0.00415 -0.0376 0.3965 0.6810
4.000 0.6337 0.01102 0.00441 -0.0360 0.3813 0.7182
4.250 0.6570 0.01113 0.00456 -0.0351 0.3732 0.7380
4.500 0.6804 0.01124 0.00472 -0.0342 0.3662 0.7579
4.750 0.7036 0.01134 0.00489 -0.0332 0.3583 0.7789
5.000 0.7237 0.01150 0.00508 -0.0317 0.3503 0.8018
5.250 0.7453 0.01160 0.00526 -0.0303 0.3426 0.8287
5.500 0.7640 0.01178 0.00550 -0.0285 0.3339 0.8578
5.750 0.7848 0.01196 0.00574 -0.0270 0.3263 0.8836
6.000 0.8053 0.01219 0.00599 -0.0255 0.3180 0.9042
6.250 0.8260 0.01246 0.00626 -0.0241 0.3107 0.9215
6.500 0.8492 0.01271 0.00652 -0.0232 0.3026 0.9367
6.750 0.8721 0.01305 0.00683 -0.0224 0.2941 0.9506
7.000 0.8980 0.01333 0.00711 -0.0223 0.2849 0.9629
7.250 0.9251 0.01372 0.00746 -0.0225 0.2753 0.9732
7.500 0.9535 0.01411 0.00780 -0.0231 0.2641 0.9816
7.750 0.9811 0.01453 0.00818 -0.0236 0.2534 0.9898
8.000 1.0096 0.01502 0.00861 -0.0245 0.2428 0.9955
8.250 1.0349 0.01547 0.00901 -0.0247 0.2333 1.0000
8.500 1.0428 0.01586 0.00937 -0.0214 0.2265 1.0000
8.750 1.0552 0.01628 0.00975 -0.0190 0.2193 1.0000
9.000 1.0671 0.01682 0.01025 -0.0168 0.2121 1.0000
9.250 1.0828 0.01729 0.01071 -0.0152 0.2055 1.0000
9.500 1.0966 0.01790 0.01129 -0.0134 0.1995 1.0000
9.750 1.1131 0.01842 0.01181 -0.0121 0.1944 1.0000
10.000 1.1291 0.01901 0.01239 -0.0108 0.1889 1.0000
10.250 1.1429 0.01974 0.01309 -0.0093 0.1836 1.0000
10.500 1.1599 0.02033 0.01370 -0.0082 0.1787 1.0000
10.750 1.1746 0.02106 0.01442 -0.0070 0.1731 1.0000
11.000 1.1887 0.02187 0.01522 -0.0058 0.1680 1.0000
11.250 1.2036 0.02265 0.01601 -0.0047 0.1624 1.0000
11.500 1.2157 0.02364 0.01697 -0.0035 0.1571 1.0000
11.750 1.2301 0.02451 0.01786 -0.0025 0.1518 1.0000
12.000 1.2411 0.02562 0.01896 -0.0013 0.1463 1.0000
12.250 1.2538 0.02667 0.02001 -0.0004 0.1414 1.0000
12.500 1.2643 0.02789 0.02124 0.0006 0.1362 1.0000
12.750 1.2746 0.02917 0.02252 0.0016 0.1318 1.0000
13.000 1.2847 0.03049 0.02385 0.0025 0.1271 1.0000
13.250 1.2926 0.03204 0.02540 0.0034 0.1231 1.0000
13.500 1.3026 0.03346 0.02686 0.0041 0.1193 1.0000
13.750 1.3103 0.03511 0.02852 0.0048 0.1155 1.0000
14.000 1.3172 0.03686 0.03030 0.0054 0.1123 1.0000
14.250 1.3248 0.03860 0.03207 0.0060 0.1087 1.0000
14.500 1.3298 0.04063 0.03412 0.0065 0.1054 1.0000
14.750 1.3356 0.04261 0.03613 0.0069 0.1024 1.0000
15.000 1.3409 0.04469 0.03825 0.0072 0.0992 1.0000
15.250 1.3433 0.04708 0.04067 0.0075 0.0962 1.0000
15.500 1.3480 0.04930 0.04294 0.0077 0.0936 1.0000
15.750 1.3514 0.05170 0.04538 0.0078 0.0909 1.0000
16.000 1.3521 0.05440 0.04812 0.0079 0.0883 1.0000
16.250 1.3543 0.05697 0.05074 0.0079 0.0860 1.0000
16.500 1.3557 0.05968 0.05350 0.0078 0.0835 1.0000
16.750 1.3548 0.06269 0.05655 0.0076 0.0811 1.0000
17.000 1.3544 0.06567 0.05958 0.0073 0.0790 1.0000
17.250 1.3539 0.06869 0.06266 0.0070 0.0768 1.0000
17.500 1.3514 0.07199 0.06600 0.0066 0.0746 1.0000
17.750 1.3481 0.07541 0.06947 0.0061 0.0727 1.0000
18.000 1.3465 0.07868 0.07281 0.0055 0.0709 1.0000
18.250 1.3434 0.08215 0.07634 0.0049 0.0691 1.0000
18.500 1.3386 0.08584 0.08007 0.0041 0.0674 1.0000
18.750 1.3338 0.08961 0.08391 0.0033 0.0661 1.0000
19.000 1.3318 0.09304 0.08740 0.0024 0.0646 1.0000
19.250 1.3275 0.09681 0.09124 0.0014 0.0632 1.0000
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