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USA 40 B AIRFOIL (usa40b-il) Xfoil prediction polar at RE=1,000,000 Ncrit=9


Details Polar file
Airfoil: USA 40 B AIRFOIL (usa40b-il)
Reynolds number: 1,000,000
Max Cl/Cd: 111.13 at α=8.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-usa40b-il-1000000.txt
Download as CSV file: xf-usa40b-il-1000000.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: USA 40 B AIRFOIL                                
  
 1 1 Reynolds number fixed          Mach number fixed         
  
 xtrf =   1.000 (top)        1.000 (bottom)  
 Mach =   0.000     Re =     1.000 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -12.750  -0.6289   0.07041   0.06825  -0.0556   1.0000   0.0265
 -12.500  -0.7261   0.04879   0.04627  -0.0742   1.0000   0.0260
 -12.250  -0.7625   0.04140   0.03869  -0.0805   1.0000   0.0260
 -12.000  -0.8065   0.03722   0.03438  -0.0801   1.0000   0.0260
 -11.750  -0.8201   0.03460   0.03159  -0.0789   1.0000   0.0260
 -11.500  -0.8107   0.03208   0.02886  -0.0804   0.9989   0.0261
 -11.250  -0.7835   0.03005   0.02661  -0.0837   0.9966   0.0262
 -11.000  -0.7639   0.02538   0.02154  -0.0880   0.9939   0.0265
 -10.750  -0.7371   0.02344   0.01948  -0.0898   0.9917   0.0268
 -10.500  -0.7085   0.02218   0.01814  -0.0911   0.9891   0.0270
 -10.250  -0.6776   0.02116   0.01705  -0.0926   0.9868   0.0272
 -10.000  -0.6450   0.02034   0.01617  -0.0942   0.9849   0.0275
  -9.750  -0.6114   0.01951   0.01527  -0.0959   0.9834   0.0278
  -9.500  -0.5772   0.01871   0.01440  -0.0976   0.9823   0.0281
  -9.250  -0.5497   0.01787   0.01348  -0.0979   0.9779   0.0283
  -9.000  -0.5168   0.01703   0.01256  -0.0992   0.9743   0.0286
  -8.750  -0.4803   0.01614   0.01159  -0.1011   0.9714   0.0288
  -8.500  -0.4469   0.01536   0.01073  -0.1023   0.9658   0.0291
  -8.250  -0.4122   0.01465   0.00995  -0.1037   0.9584   0.0294
  -8.000  -0.3772   0.01402   0.00925  -0.1052   0.9501   0.0296
  -7.750  -0.3405   0.01347   0.00863  -0.1069   0.9417   0.0298
  -7.500  -0.3061   0.01301   0.00809  -0.1081   0.9295   0.0300
  -7.250  -0.2751   0.01216   0.00714  -0.1089   0.9140   0.0304
  -7.000  -0.2470   0.01156   0.00647  -0.1089   0.8960   0.0309
  -6.750  -0.2202   0.01120   0.00603  -0.1085   0.8745   0.0313
  -6.500  -0.1944   0.01095   0.00568  -0.1078   0.8488   0.0317
  -6.250  -0.1697   0.01077   0.00536  -0.1069   0.8143   0.0321
  -6.000  -0.1455   0.01066   0.00508  -0.1058   0.7779   0.0327
  -5.750  -0.1206   0.01049   0.00478  -0.1050   0.7516   0.0331
  -5.500  -0.0948   0.01032   0.00451  -0.1043   0.7328   0.0335
  -5.250  -0.0685   0.01016   0.00426  -0.1037   0.7181   0.0339
  -5.000  -0.0421   0.01003   0.00404  -0.1031   0.7035   0.0343
  -4.750  -0.0158   0.00968   0.00363  -0.1026   0.6901   0.0350
  -4.500   0.0110   0.00947   0.00338  -0.1022   0.6778   0.0359
  -4.250   0.0379   0.00934   0.00319  -0.1017   0.6647   0.0367
  -4.000   0.0652   0.00921   0.00301  -0.1013   0.6505   0.0376
  -3.750   0.0924   0.00911   0.00285  -0.1008   0.6339   0.0386
  -3.500   0.1191   0.00899   0.00264  -0.1003   0.6141   0.0399
  -3.250   0.1455   0.00891   0.00249  -0.0997   0.5905   0.0416
  -3.000   0.1722   0.00890   0.00238  -0.0992   0.5635   0.0437
  -2.750   0.1982   0.00888   0.00226  -0.0986   0.5317   0.0472
  -2.500   0.2239   0.00892   0.00217  -0.0979   0.4956   0.0530
  -2.250   0.2497   0.00899   0.00213  -0.0973   0.4599   0.0632
  -2.000   0.2758   0.00904   0.00210  -0.0967   0.4298   0.0741
  -1.750   0.3023   0.00908   0.00206  -0.0962   0.4070   0.0838
  -1.500   0.3290   0.00908   0.00203  -0.0958   0.3885   0.0962
  -1.000   0.3823   0.00889   0.00201  -0.0950   0.3597   0.1814
  -0.750   0.4095   0.00889   0.00203  -0.0947   0.3481   0.2048
  -0.500   0.4365   0.00894   0.00205  -0.0943   0.3361   0.2236
  -0.250   0.4640   0.00892   0.00206  -0.0940   0.3276   0.2452
   0.000   0.4907   0.00890   0.00209  -0.0936   0.3182   0.2855
   0.250   0.5175   0.00873   0.00213  -0.0933   0.3119   0.3669
   0.500   0.5440   0.00863   0.00219  -0.0929   0.3045   0.4381
   0.750   0.5701   0.00847   0.00227  -0.0924   0.2981   0.5359
   1.000   0.5969   0.00843   0.00236  -0.0920   0.2924   0.5974
   1.250   0.6234   0.00848   0.00246  -0.0914   0.2857   0.6411
   1.500   0.6503   0.00853   0.00256  -0.0910   0.2802   0.6758
   1.750   0.6775   0.00860   0.00264  -0.0905   0.2749   0.6969
   2.000   0.7042   0.00872   0.00275  -0.0901   0.2690   0.7151
   2.250   0.7311   0.00883   0.00285  -0.0896   0.2643   0.7326
   2.500   0.7582   0.00890   0.00294  -0.0892   0.2605   0.7469
   2.750   0.7849   0.00901   0.00304  -0.0887   0.2560   0.7600
   3.000   0.8112   0.00916   0.00316  -0.0882   0.2509   0.7724
   3.250   0.8380   0.00926   0.00327  -0.0877   0.2477   0.7847
   3.500   0.8647   0.00934   0.00338  -0.0873   0.2447   0.7953
   3.750   0.8913   0.00945   0.00348  -0.0868   0.2413   0.8060
   4.000   0.9173   0.00958   0.00361  -0.0862   0.2376   0.8172
   4.250   0.9423   0.00975   0.00377  -0.0855   0.2332   0.8297
   4.500   0.9687   0.00979   0.00387  -0.0850   0.2314   0.8445
   4.750   0.9942   0.00983   0.00398  -0.0843   0.2290   0.8661
   5.000   1.0330   0.00979   0.00412  -0.0866   0.2259   1.0000
   5.250   1.0594   0.00997   0.00427  -0.0862   0.2232   1.0000
   5.500   1.0849   0.01021   0.00446  -0.0856   0.2194   1.0000
   5.750   1.1109   0.01039   0.00463  -0.0852   0.2169   1.0000
   6.000   1.1375   0.01053   0.00477  -0.0848   0.2154   1.0000
   6.250   1.1638   0.01068   0.00493  -0.0844   0.2136   1.0000
   6.500   1.1898   0.01085   0.00509  -0.0840   0.2114   1.0000
   6.750   1.2153   0.01105   0.00526  -0.0834   0.2091   1.0000
   7.000   1.2402   0.01127   0.00547  -0.0828   0.2066   1.0000
   7.250   1.2641   0.01157   0.00574  -0.0821   0.2037   1.0000
   7.500   1.2890   0.01177   0.00595  -0.0815   0.2021   1.0000
   7.750   1.3147   0.01193   0.00613  -0.0810   0.2009   1.0000
   8.000   1.3399   0.01210   0.00632  -0.0805   0.1995   1.0000
   8.250   1.3647   0.01229   0.00653  -0.0799   0.1981   1.0000
   8.500   1.3891   0.01250   0.00674  -0.0792   0.1964   1.0000
   8.750   1.4131   0.01272   0.00697  -0.0785   0.1947   1.0000
   9.000   1.4365   0.01297   0.00722  -0.0777   0.1928   1.0000
   9.250   1.4587   0.01328   0.00752  -0.0767   0.1906   1.0000
   9.500   1.4798   0.01364   0.00789  -0.0756   0.1882   1.0000
   9.750   1.5037   0.01382   0.00811  -0.0749   0.1874   1.0000
  10.000   1.5270   0.01402   0.00835  -0.0741   0.1864   1.0000
  10.250   1.5498   0.01424   0.00860  -0.0732   0.1853   1.0000
  10.500   1.5720   0.01447   0.00886  -0.0722   0.1839   1.0000
  10.750   1.5934   0.01468   0.00909  -0.0711   0.1820   1.0000
  11.000   1.6131   0.01492   0.00934  -0.0697   0.1795   1.0000
  11.250   1.6307   0.01526   0.00968  -0.0680   0.1770   1.0000
  11.500   1.6467   0.01567   0.01009  -0.0661   0.1744   1.0000
  11.750   1.6685   0.01582   0.01031  -0.0651   0.1728   1.0000
  12.000   1.6892   0.01603   0.01055  -0.0640   0.1706   1.0000
  12.250   1.7081   0.01631   0.01086  -0.0626   0.1684   1.0000
  12.500   1.7258   0.01666   0.01122  -0.0611   0.1658   1.0000
  12.750   1.7413   0.01711   0.01167  -0.0594   0.1629   1.0000
  13.000   1.7582   0.01750   0.01210  -0.0578   0.1606   1.0000
  13.250   1.7772   0.01780   0.01246  -0.0567   0.1582   1.0000
  13.500   1.7943   0.01819   0.01288  -0.0552   0.1550   1.0000
  13.750   1.8087   0.01873   0.01342  -0.0536   0.1514   1.0000
  14.000   1.8230   0.01929   0.01401  -0.0519   0.1479   1.0000
  14.250   1.8388   0.01978   0.01455  -0.0505   0.1441   1.0000
  14.500   1.8494   0.02058   0.01532  -0.0487   0.1377   1.0000
  14.750   1.8618   0.02130   0.01607  -0.0471   0.1318   1.0000
  15.000   1.8691   0.02237   0.01711  -0.0451   0.1242   1.0000
  15.250   1.8724   0.02373   0.01844  -0.0429   0.1138   1.0000
  15.500   1.8698   0.02559   0.02025  -0.0406   0.1019   1.0000
  15.750   1.8659   0.02768   0.02232  -0.0385   0.0939   1.0000
  16.000   1.8648   0.02969   0.02437  -0.0369   0.0893   1.0000
  16.250   1.8616   0.03205   0.02676  -0.0356   0.0851   1.0000
  16.500   1.8615   0.03426   0.02904  -0.0347   0.0822   1.0000
  16.750   1.8580   0.03692   0.03175  -0.0339   0.0797   1.0000
  17.000   1.8506   0.04008   0.03498  -0.0334   0.0768   1.0000
  17.250   1.8489   0.04281   0.03779  -0.0332   0.0747   1.0000
  17.500   1.8425   0.04612   0.04120  -0.0332   0.0724   1.0000
  17.750   1.8303   0.05027   0.04543  -0.0336   0.0702   1.0000
  18.000   1.8153   0.05497   0.05022  -0.0343   0.0681   1.0000
  18.250   1.8049   0.05928   0.05464  -0.0352   0.0662   1.0000
  18.500   1.7871   0.06477   0.06024  -0.0367   0.0639   1.0000
  18.750   1.7609   0.07165   0.06724  -0.0389   0.0620   1.0000
  19.000   1.7314   0.07930   0.07502  -0.0416   0.0606   1.0000
  19.250   1.7041   0.08681   0.08268  -0.0445   0.0591   1.0000
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