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NACA 2421 (naca2421-il) Xfoil prediction polar at RE=1,000,000 Ncrit=5


Details Polar file
Airfoil: NACA 2421 (naca2421-il)
Reynolds number: 1,000,000
Max Cl/Cd: 81.15 at α=6.5°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca2421-il-1000000-n5.txt
Download as CSV file: xf-naca2421-il-1000000-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 =     1.000 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.750  -1.2239   0.07174   0.06721  -0.0695   1.0000   0.0449
 -19.500  -1.2384   0.06678   0.06217  -0.0715   1.0000   0.0454
 -19.250  -1.2503   0.06225   0.05754  -0.0732   1.0000   0.0459
 -19.000  -1.2594   0.05812   0.05333  -0.0747   1.0000   0.0464
 -18.750  -1.2663   0.05433   0.04946  -0.0760   1.0000   0.0469
 -18.500  -1.2710   0.05088   0.04594  -0.0771   1.0000   0.0475
 -18.250  -1.2734   0.04773   0.04271  -0.0780   1.0000   0.0480
 -18.000  -1.2740   0.04487   0.03977  -0.0788   1.0000   0.0485
 -17.750  -1.2738   0.04217   0.03701  -0.0793   1.0000   0.0489
 -17.500  -1.2746   0.03944   0.03422  -0.0798   1.0000   0.0495
 -17.250  -1.2735   0.03700   0.03172  -0.0801   1.0000   0.0502
 -17.000  -1.2707   0.03482   0.02949  -0.0801   1.0000   0.0508
 -16.750  -1.2663   0.03288   0.02750  -0.0800   1.0000   0.0515
 -16.500  -1.2607   0.03115   0.02572  -0.0797   1.0000   0.0522
 -16.250  -1.2546   0.02961   0.02414  -0.0790   1.0000   0.0529
 -16.000  -1.2486   0.02824   0.02272  -0.0781   1.0000   0.0535
 -15.750  -1.2454   0.02692   0.02136  -0.0765   1.0000   0.0542
 -15.500  -1.2448   0.02568   0.02009  -0.0743   1.0000   0.0550
 -15.250  -1.2330   0.02450   0.01888  -0.0739   0.9988   0.0560
 -15.000  -1.2131   0.02341   0.01776  -0.0746   0.9967   0.0572
 -14.750  -1.1912   0.02246   0.01677  -0.0755   0.9946   0.0583
 -14.500  -1.1678   0.02161   0.01589  -0.0764   0.9930   0.0592
 -14.250  -1.1462   0.02068   0.01495  -0.0770   0.9909   0.0605
 -14.000  -1.1270   0.01989   0.01414  -0.0769   0.9864   0.0617
 -13.750  -1.1052   0.01919   0.01342  -0.0771   0.9822   0.0630
 -13.500  -1.0813   0.01856   0.01276  -0.0775   0.9787   0.0644
 -13.250  -1.0627   0.01796   0.01214  -0.0768   0.9723   0.0657
 -13.000  -1.0431   0.01735   0.01152  -0.0763   0.9659   0.0673
 -12.750  -1.0242   0.01683   0.01099  -0.0754   0.9592   0.0688
 -12.500  -1.0053   0.01638   0.01050  -0.0743   0.9511   0.0702
 -12.250  -0.9865   0.01596   0.01004  -0.0731   0.9427   0.0715
 -12.000  -0.9691   0.01551   0.00956  -0.0716   0.9321   0.0732
 -11.750  -0.9506   0.01512   0.00914  -0.0702   0.9215   0.0751
 -11.500  -0.9311   0.01478   0.00875  -0.0689   0.9111   0.0769
 -11.250  -0.9115   0.01444   0.00838  -0.0677   0.9016   0.0788
 -10.750  -0.8735   0.01384   0.00773  -0.0648   0.8828   0.0832
 -10.500  -0.8524   0.01359   0.00743  -0.0636   0.8730   0.0854
 -10.250  -0.8305   0.01329   0.00712  -0.0627   0.8643   0.0883
 -10.000  -0.8077   0.01305   0.00685  -0.0618   0.8544   0.0912
  -9.750  -0.7846   0.01279   0.00658  -0.0610   0.8450   0.0942
  -9.500  -0.7614   0.01255   0.00631  -0.0602   0.8343   0.0980
  -9.250  -0.7372   0.01234   0.00607  -0.0596   0.8253   0.1013
  -9.000  -0.7134   0.01210   0.00583  -0.0589   0.8147   0.1054
  -8.750  -0.6887   0.01192   0.00561  -0.0583   0.8045   0.1093
  -8.500  -0.6644   0.01170   0.00539  -0.0577   0.7932   0.1139
  -8.250  -0.6392   0.01154   0.00520  -0.0572   0.7836   0.1180
  -8.000  -0.6140   0.01136   0.00501  -0.0567   0.7731   0.1220
  -7.750  -0.5888   0.01120   0.00482  -0.0561   0.7628   0.1267
  -7.500  -0.5629   0.01107   0.00466  -0.0557   0.7515   0.1304
  -7.250  -0.5376   0.01091   0.00449  -0.0552   0.7416   0.1347
  -7.000  -0.5114   0.01078   0.00433  -0.0549   0.7313   0.1390
  -6.750  -0.4854   0.01066   0.00419  -0.0544   0.7208   0.1429
  -6.500  -0.4594   0.01052   0.00404  -0.0540   0.7100   0.1475
  -6.250  -0.4332   0.01043   0.00390  -0.0537   0.6996   0.1516
  -6.000  -0.4068   0.01030   0.00377  -0.0533   0.6886   0.1561
  -5.750  -0.3810   0.01020   0.00364  -0.0529   0.6769   0.1614
  -5.250  -0.3288   0.01000   0.00340  -0.0521   0.6504   0.1729
  -5.000  -0.3029   0.00994   0.00330  -0.0516   0.6369   0.1795
  -4.750  -0.2766   0.00980   0.00319  -0.0512   0.6257   0.1885
  -4.500  -0.2505   0.00972   0.00309  -0.0508   0.6142   0.1972
  -4.250  -0.2239   0.00962   0.00300  -0.0505   0.6034   0.2080
  -4.000  -0.1978   0.00953   0.00293  -0.0501   0.5934   0.2184
  -3.750  -0.1705   0.00946   0.00286  -0.0499   0.5845   0.2275
  -3.500  -0.1441   0.00939   0.00280  -0.0496   0.5748   0.2382
  -3.250  -0.1169   0.00932   0.00274  -0.0494   0.5667   0.2476
  -3.000  -0.0899   0.00927   0.00269  -0.0491   0.5570   0.2569
  -2.750  -0.0627   0.00925   0.00265  -0.0489   0.5482   0.2637
  -2.500  -0.0355   0.00920   0.00261  -0.0486   0.5395   0.2717
  -2.000   0.0195   0.00916   0.00255  -0.0483   0.5250   0.2845
  -1.750   0.0469   0.00912   0.00253  -0.0481   0.5178   0.2927
  -1.250   0.1018   0.00908   0.00249  -0.0478   0.5048   0.3076
  -1.000   0.1295   0.00906   0.00248  -0.0476   0.4977   0.3155
  -0.500   0.1835   0.00905   0.00247  -0.0471   0.4802   0.3355
  -0.250   0.2101   0.00907   0.00248  -0.0468   0.4702   0.3454
   0.000   0.2373   0.00905   0.00249  -0.0466   0.4626   0.3574
   0.250   0.2640   0.00903   0.00249  -0.0463   0.4539   0.3721
   0.500   0.2904   0.00903   0.00251  -0.0459   0.4459   0.3886
   0.750   0.3170   0.00900   0.00253  -0.0456   0.4372   0.4098
   1.000   0.3425   0.00900   0.00257  -0.0451   0.4268   0.4337
   1.250   0.3691   0.00896   0.00260  -0.0448   0.4190   0.4574
   1.500   0.3953   0.00897   0.00265  -0.0444   0.4111   0.4777
   1.750   0.4218   0.00899   0.00270  -0.0441   0.4038   0.4962
   2.000   0.4483   0.00903   0.00276  -0.0438   0.3951   0.5137
   2.250   0.4742   0.00908   0.00283  -0.0433   0.3871   0.5302
   2.500   0.5010   0.00911   0.00289  -0.0431   0.3805   0.5440
   2.750   0.5271   0.00920   0.00297  -0.0427   0.3727   0.5576
   3.000   0.5532   0.00926   0.00306  -0.0423   0.3657   0.5714
   3.250   0.5794   0.00933   0.00314  -0.0419   0.3580   0.5843
   3.500   0.6046   0.00943   0.00325  -0.0414   0.3503   0.6001
   3.750   0.6308   0.00948   0.00334  -0.0410   0.3443   0.6148
   4.000   0.6562   0.00960   0.00346  -0.0405   0.3362   0.6284
   4.250   0.6811   0.00970   0.00358  -0.0400   0.3287   0.6428
   4.500   0.7061   0.00981   0.00370  -0.0394   0.3200   0.6565
   4.750   0.7301   0.00995   0.00384  -0.0387   0.3114   0.6732
   5.000   0.7548   0.01003   0.00398  -0.0380   0.3039   0.6921
   5.250   0.7775   0.01017   0.00414  -0.0370   0.2958   0.7110
   5.500   0.8005   0.01026   0.00428  -0.0361   0.2891   0.7305
   5.750   0.8213   0.01040   0.00445  -0.0347   0.2796   0.7530
   6.000   0.8430   0.01052   0.00465  -0.0335   0.2706   0.7844
   6.250   0.8636   0.01071   0.00490  -0.0322   0.2602   0.8196
   6.500   0.8845   0.01090   0.00515  -0.0309   0.2492   0.8508
   6.750   0.9047   0.01116   0.00542  -0.0295   0.2391   0.8733
   7.000   0.9245   0.01145   0.00572  -0.0280   0.2296   0.8922
   7.250   0.9451   0.01170   0.00599  -0.0267   0.2228   0.9101
   7.500   0.9641   0.01201   0.00630  -0.0251   0.2153   0.9273
   7.750   0.9839   0.01230   0.00660  -0.0237   0.2094   0.9440
   8.000   1.0038   0.01265   0.00694  -0.0224   0.2019   0.9593
   8.250   1.0270   0.01302   0.00729  -0.0219   0.1951   0.9721
   8.500   1.0526   0.01339   0.00764  -0.0219   0.1887   0.9822
   8.750   1.0780   0.01380   0.00802  -0.0220   0.1828   0.9915
   9.000   1.1069   0.01417   0.00837  -0.0228   0.1775   0.9972
   9.250   1.1258   0.01460   0.00877  -0.0217   0.1715   1.0000
   9.500   1.1431   0.01498   0.00913  -0.0202   0.1668   1.0000
   9.750   1.1597   0.01543   0.00956  -0.0187   0.1609   1.0000
  10.000   1.1765   0.01593   0.01003  -0.0174   0.1553   1.0000
  10.250   1.1930   0.01646   0.01054  -0.0160   0.1491   1.0000
  10.500   1.2090   0.01705   0.01110  -0.0146   0.1433   1.0000
  10.750   1.2248   0.01767   0.01170  -0.0133   0.1373   1.0000
  11.000   1.2401   0.01835   0.01236  -0.0121   0.1319   1.0000
  11.250   1.2555   0.01905   0.01304  -0.0108   0.1268   1.0000
  11.500   1.2699   0.01982   0.01379  -0.0096   0.1223   1.0000
  11.750   1.2853   0.02056   0.01454  -0.0085   0.1182   1.0000
  12.000   1.2984   0.02146   0.01543  -0.0073   0.1140   1.0000
  12.250   1.3130   0.02231   0.01628  -0.0063   0.1105   1.0000
  12.500   1.3260   0.02327   0.01724  -0.0052   0.1065   1.0000
  12.750   1.3380   0.02432   0.01829  -0.0041   0.1030   1.0000
  13.000   1.3510   0.02534   0.01932  -0.0032   0.0996   1.0000
  13.250   1.3613   0.02658   0.02056  -0.0021   0.0962   1.0000
  13.500   1.3735   0.02773   0.02172  -0.0013   0.0935   1.0000
  13.750   1.3844   0.02899   0.02300  -0.0004   0.0904   1.0000
  14.000   1.3926   0.03049   0.02451   0.0005   0.0874   1.0000
  14.250   1.4035   0.03183   0.02588   0.0012   0.0847   1.0000
  14.500   1.4116   0.03344   0.02750   0.0019   0.0817   1.0000
  14.750   1.4187   0.03517   0.02924   0.0026   0.0791   1.0000
  15.000   1.4266   0.03685   0.03095   0.0031   0.0763   1.0000
  15.250   1.4314   0.03885   0.03297   0.0037   0.0736   1.0000
  15.500   1.4374   0.04081   0.03496   0.0042   0.0713   1.0000
  15.750   1.4427   0.04286   0.03704   0.0046   0.0689   1.0000
  16.000   1.4455   0.04517   0.03938   0.0049   0.0669   1.0000
  16.250   1.4497   0.04742   0.04167   0.0052   0.0652   1.0000
  16.500   1.4532   0.04974   0.04404   0.0053   0.0634   1.0000
  16.750   1.4548   0.05231   0.04664   0.0055   0.0618   1.0000
  17.000   1.4551   0.05507   0.04945   0.0055   0.0603   1.0000
  17.250   1.4570   0.05766   0.05209   0.0055   0.0591   1.0000
  17.500   1.4581   0.06037   0.05485   0.0054   0.0577   1.0000
  17.750   1.4563   0.06347   0.05800   0.0052   0.0565   1.0000
  18.000   1.4533   0.06673   0.06131   0.0049   0.0553   1.0000
  18.250   1.4534   0.06963   0.06427   0.0046   0.0543   1.0000
  18.500   1.4511   0.07288   0.06758   0.0042   0.0533   1.0000
  18.750   1.4485   0.07617   0.07093   0.0037   0.0522   1.0000
  19.000   1.4443   0.07970   0.07452   0.0031   0.0512   1.0000
  19.250   1.4375   0.08358   0.07846   0.0024   0.0502   1.0000
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