NACA 2421 (naca2421-il) Xfoil prediction polar at RE=100,000 Ncrit=9
| Details | Polar file |
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Airfoil: NACA 2421 (naca2421-il) Reynolds number: 100,000 Max Cl/Cd: 39.52 at α=8.5° Description: Mach=0 Ncrit=9 Source: Xfoil prediction Download polar: xf-naca2421-il-100000.txt Download as CSV file: xf-naca2421-il-100000.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 = 0.100 e 6 Ncrit = 9.000
alpha CL CD CDp CM Top_Xtr Bot_Xtr
------ -------- --------- --------- -------- -------- --------
-13.750 -0.8012 0.06772 0.06072 -0.0779 1.0000 0.1523
-13.500 -0.8857 0.05969 0.05242 -0.0762 1.0000 0.1517
-13.250 -0.9439 0.05559 0.04809 -0.0711 1.0000 0.1518
-13.000 -0.9933 0.05311 0.04543 -0.0638 1.0000 0.1521
-12.750 -1.0387 0.05145 0.04361 -0.0552 1.0000 0.1524
-12.500 -1.0748 0.04954 0.04147 -0.0477 1.0000 0.1532
-12.250 -1.0415 0.04887 0.04106 -0.0484 1.0000 0.1564
-12.000 -1.0440 0.04788 0.04006 -0.0446 1.0000 0.1586
-11.750 -1.0545 0.04660 0.03869 -0.0399 1.0000 0.1608
-11.500 -1.0705 0.04505 0.03694 -0.0345 1.0000 0.1630
-11.250 -1.0886 0.04338 0.03496 -0.0287 1.0000 0.1651
-11.000 -1.0823 0.04211 0.03370 -0.0261 1.0000 0.1680
-10.750 -1.0704 0.04149 0.03316 -0.0241 1.0000 0.1711
-10.500 -1.0668 0.04056 0.03216 -0.0210 1.0000 0.1745
-10.250 -1.0691 0.03933 0.03066 -0.0171 1.0000 0.1781
-10.000 -1.0619 0.03820 0.02948 -0.0146 1.0000 0.1817
-9.750 -1.0473 0.03772 0.02912 -0.0129 1.0000 0.1855
-9.500 -1.0396 0.03695 0.02825 -0.0104 1.0000 0.1899
-9.250 -1.0361 0.03591 0.02689 -0.0074 1.0000 0.1946
-9.000 -1.0180 0.03544 0.02666 -0.0063 1.0000 0.1989
-8.750 -1.0038 0.03493 0.02612 -0.0048 0.9995 0.2041
-8.500 -0.9652 0.03417 0.02523 -0.0078 0.9930 0.2121
-8.250 -0.9267 0.03389 0.02502 -0.0105 0.9857 0.2200
-8.000 -0.8870 0.03331 0.02434 -0.0136 0.9790 0.2288
-7.750 -0.8535 0.03301 0.02408 -0.0153 0.9705 0.2372
-7.500 -0.8124 0.03251 0.02353 -0.0184 0.9640 0.2467
-7.250 -0.7830 0.03219 0.02321 -0.0192 0.9545 0.2556
-7.000 -0.7411 0.03172 0.02275 -0.0224 0.9482 0.2658
-6.750 -0.7146 0.03139 0.02238 -0.0226 0.9379 0.2754
-6.500 -0.6722 0.03093 0.02198 -0.0257 0.9315 0.2862
-6.250 -0.6475 0.03062 0.02156 -0.0255 0.9212 0.2969
-6.000 -0.6064 0.03017 0.02126 -0.0282 0.9144 0.3083
-5.750 -0.5792 0.02980 0.02077 -0.0284 0.9047 0.3205
-5.500 -0.5423 0.02944 0.02056 -0.0302 0.8968 0.3331
-5.250 -0.4952 0.02895 0.02014 -0.0337 0.8923 0.3484
-5.000 -0.4802 0.02877 0.01983 -0.0317 0.8791 0.3609
-4.750 -0.4342 0.02826 0.01951 -0.0348 0.8740 0.3768
-4.500 -0.4129 0.02805 0.01936 -0.0337 0.8626 0.3891
-4.250 -0.3736 0.02759 0.01890 -0.0357 0.8558 0.4060
-4.000 -0.3239 0.02705 0.01838 -0.0393 0.8521 0.4248
-3.750 -0.3096 0.02700 0.01850 -0.0368 0.8384 0.4358
-3.500 -0.2628 0.02642 0.01798 -0.0398 0.8339 0.4542
-3.250 -0.2139 0.02574 0.01735 -0.0429 0.8306 0.4735
-3.000 -0.2017 0.02582 0.01747 -0.0401 0.8162 0.4875
-2.750 -0.1571 0.02518 0.01693 -0.0423 0.8118 0.5069
-2.500 -0.1363 0.02512 0.01696 -0.0408 0.8004 0.5227
-2.250 -0.0999 0.02464 0.01655 -0.0416 0.7935 0.5432
-2.000 -0.0558 0.02398 0.01597 -0.0435 0.7893 0.5662
-1.750 -0.0415 0.02412 0.01617 -0.0409 0.7761 0.5855
-1.500 -0.0026 0.02361 0.01576 -0.0418 0.7703 0.6102
-1.250 0.0255 0.02346 0.01571 -0.0411 0.7618 0.6339
-1.000 0.0506 0.02337 0.01571 -0.0399 0.7519 0.6574
-0.750 0.0918 0.02290 0.01529 -0.0410 0.7467 0.6826
-0.500 0.1065 0.02318 0.01567 -0.0383 0.7343 0.7040
-0.250 0.1427 0.02289 0.01541 -0.0386 0.7274 0.7274
0.000 0.1699 0.02295 0.01551 -0.0376 0.7190 0.7492
0.250 0.1932 0.02308 0.01568 -0.0361 0.7088 0.7705
0.500 0.2333 0.02284 0.01540 -0.0369 0.7029 0.7920
0.750 0.2512 0.02337 0.01603 -0.0345 0.6906 0.8089
1.000 0.2917 0.02333 0.01595 -0.0354 0.6833 0.8261
1.250 0.3178 0.02371 0.01634 -0.0345 0.6738 0.8439
1.500 0.3488 0.02386 0.01647 -0.0342 0.6644 0.8621
1.750 0.4021 0.02401 0.01651 -0.0377 0.6566 0.8739
2.000 0.4324 0.02446 0.01700 -0.0378 0.6449 0.8890
2.250 0.4813 0.02432 0.01669 -0.0407 0.6374 0.9042
2.500 0.5319 0.02472 0.01712 -0.0447 0.6230 0.9129
2.750 0.5826 0.02466 0.01693 -0.0483 0.6129 0.9261
3.000 0.6387 0.02485 0.01709 -0.0536 0.6000 0.9360
3.250 0.6900 0.02496 0.01712 -0.0579 0.5895 0.9486
3.500 0.7375 0.02503 0.01716 -0.0617 0.5781 0.9623
3.750 0.7920 0.02510 0.01718 -0.0671 0.5668 0.9731
4.000 0.8455 0.02497 0.01697 -0.0723 0.5555 0.9837
4.250 0.8945 0.02506 0.01707 -0.0770 0.5437 0.9946
4.500 0.9336 0.02491 0.01682 -0.0797 0.5337 1.0000
4.750 0.9441 0.02515 0.01707 -0.0774 0.5247 1.0000
5.000 0.9560 0.02527 0.01717 -0.0752 0.5156 1.0000
5.250 0.9756 0.02531 0.01709 -0.0740 0.5077 1.0000
5.500 0.9784 0.02569 0.01756 -0.0703 0.4979 1.0000
5.750 1.0013 0.02564 0.01733 -0.0695 0.4898 1.0000
6.000 1.0023 0.02612 0.01792 -0.0653 0.4802 1.0000
6.250 1.0194 0.02618 0.01789 -0.0634 0.4713 1.0000
6.500 1.0279 0.02654 0.01825 -0.0603 0.4623 1.0000
6.750 1.0385 0.02675 0.01843 -0.0573 0.4529 1.0000
7.000 1.0542 0.02698 0.01858 -0.0552 0.4440 1.0000
7.250 1.0587 0.02732 0.01896 -0.0512 0.4343 1.0000
7.500 1.0805 0.02747 0.01896 -0.0500 0.4255 1.0000
7.750 1.0798 0.02795 0.01952 -0.0452 0.4158 1.0000
8.000 1.1072 0.02805 0.01943 -0.0449 0.4070 1.0000
8.250 1.1017 0.02867 0.02018 -0.0394 0.3976 1.0000
8.500 1.1354 0.02873 0.01998 -0.0402 0.3886 1.0000
8.750 1.1242 0.02949 0.02093 -0.0338 0.3798 1.0000
9.000 1.1518 0.02964 0.02090 -0.0336 0.3709 1.0000
9.250 1.1489 0.03042 0.02179 -0.0287 0.3625 1.0000
9.500 1.1680 0.03073 0.02201 -0.0272 0.3537 1.0000
9.750 1.1764 0.03142 0.02271 -0.0243 0.3457 1.0000
10.000 1.1845 0.03199 0.02329 -0.0213 0.3372 1.0000
10.250 1.2065 0.03248 0.02367 -0.0204 0.3291 1.0000
10.500 1.1990 0.03334 0.02466 -0.0152 0.3216 1.0000
10.750 1.2380 0.03354 0.02460 -0.0169 0.3127 1.0000
11.000 1.2179 0.03473 0.02603 -0.0102 0.3063 1.0000
11.250 1.2355 0.03517 0.02638 -0.0088 0.2982 1.0000
11.500 1.2410 0.03613 0.02737 -0.0061 0.2910 1.0000
11.750 1.2404 0.03717 0.02848 -0.0028 0.2837 1.0000
12.000 1.2665 0.03756 0.02871 -0.0027 0.2760 1.0000
12.250 1.2518 0.03924 0.03061 0.0018 0.2697 1.0000
12.500 1.2819 0.03937 0.03052 0.0015 0.2618 1.0000
12.750 1.2694 0.04128 0.03262 0.0053 0.2560 1.0000
13.000 1.2731 0.04250 0.03388 0.0073 0.2493 1.0000
13.250 1.2935 0.04321 0.03447 0.0078 0.2425 1.0000
13.500 1.2772 0.04559 0.03707 0.0110 0.2369 1.0000
13.750 1.3168 0.04531 0.03649 0.0102 0.2292 1.0000
14.000 1.2939 0.04828 0.03974 0.0135 0.2245 1.0000
14.250 1.2869 0.05051 0.04210 0.0154 0.2189 1.0000
14.500 1.3224 0.05046 0.04180 0.0150 0.2119 1.0000
14.750 1.2906 0.05441 0.04607 0.0177 0.2079 1.0000
15.000 1.2895 0.05652 0.04824 0.0188 0.2025 1.0000
15.250 1.3162 0.05694 0.04849 0.0189 0.1964 1.0000
15.500 1.2773 0.06209 0.05398 0.0206 0.1929 1.0000
15.750 1.2655 0.06540 0.05741 0.0212 0.1884 1.0000
16.000 1.3040 0.06460 0.05638 0.0215 0.1823 1.0000
16.250 1.2476 0.07224 0.06443 0.0217 0.1798 1.0000
16.750 1.2896 0.07326 0.06525 0.0225 0.1696 1.0000
17.000 1.1924 0.08678 0.07933 0.0200 0.1684 1.0000
17.250 0.7133 0.19561 0.18902 -0.0284 0.1980 1.0000
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