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NACA 4421 (naca4421-il) Xfoil prediction polar at RE=100,000 Ncrit=5


Details Polar file
Airfoil: NACA 4421 (naca4421-il)
Reynolds number: 100,000
Max Cl/Cd: 41.85 at α=5.5°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca4421-il-100000-n5.txt
Download as CSV file: xf-naca4421-il-100000-n5.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: NACA 4421                                       
  
 1 1 Reynolds number fixed          Mach number fixed         
  
 xtrf =   1.000 (top)        1.000 (bottom)  
 Mach =   0.000     Re =     0.100 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -14.500  -0.7162   0.07173   0.06475  -0.0867   1.0000   0.0912
 -14.250  -0.7909   0.06184   0.05454  -0.0897   1.0000   0.0918
 -14.000  -0.8364   0.05663   0.04912  -0.0893   1.0000   0.0925
 -13.750  -0.8749   0.05286   0.04515  -0.0872   1.0000   0.0932
 -13.500  -0.8749   0.05134   0.04367  -0.0865   0.9984   0.0943
 -13.250  -0.8633   0.04920   0.04147  -0.0888   0.9938   0.0961
 -13.000  -0.8587   0.04671   0.03881  -0.0905   0.9880   0.0982
 -12.750  -0.8586   0.04413   0.03594  -0.0915   0.9812   0.1006
 -12.500  -0.8475   0.04276   0.03452  -0.0917   0.9752   0.1026
 -12.250  -0.8346   0.04169   0.03342  -0.0915   0.9686   0.1048
 -12.000  -0.8199   0.04030   0.03186  -0.0918   0.9633   0.1077
 -11.750  -0.8120   0.03889   0.03024  -0.0906   0.9547   0.1105
 -11.500  -0.7851   0.03806   0.02946  -0.0918   0.9504   0.1133
 -11.250  -0.7717   0.03714   0.02844  -0.0907   0.9426   0.1163
 -11.000  -0.7530   0.03592   0.02700  -0.0906   0.9363   0.1200
 -10.750  -0.7223   0.03518   0.02631  -0.0921   0.9328   0.1232
 -10.500  -0.7107   0.03450   0.02555  -0.0900   0.9236   0.1264
 -10.250  -0.6862   0.03351   0.02436  -0.0905   0.9183   0.1306
 -10.000  -0.6531   0.03279   0.02369  -0.0921   0.9152   0.1343
  -9.750  -0.6414   0.03224   0.02306  -0.0898   0.9053   0.1377
  -9.500  -0.6138   0.03140   0.02206  -0.0904   0.9003   0.1422
  -9.250  -0.5795   0.03071   0.02141  -0.0920   0.8971   0.1463
  -9.000  -0.5657   0.03023   0.02086  -0.0898   0.8877   0.1501
  -8.750  -0.5379   0.02951   0.02003  -0.0902   0.8822   0.1546
  -8.500  -0.5047   0.02887   0.01942  -0.0915   0.8786   0.1590
  -8.250  -0.4859   0.02842   0.01889  -0.0900   0.8704   0.1635
  -8.000  -0.4608   0.02785   0.01827  -0.0897   0.8637   0.1681
  -7.750  -0.4282   0.02728   0.01771  -0.0907   0.8596   0.1732
  -7.500  -0.4033   0.02680   0.01712  -0.0903   0.8530   0.1788
  -7.250  -0.3818   0.02639   0.01675  -0.0892   0.8446   0.1832
  -7.000  -0.3494   0.02585   0.01619  -0.0901   0.8400   0.1890
  -6.750  -0.3173   0.02529   0.01554  -0.0908   0.8353   0.1954
  -6.500  -0.3005   0.02505   0.01535  -0.0888   0.8250   0.1996
  -6.000  -0.2360   0.02403   0.01425  -0.0903   0.8147   0.2131
  -5.750  -0.2182   0.02383   0.01406  -0.0884   0.8043   0.2189
  -5.500  -0.1851   0.02336   0.01348  -0.0892   0.7987   0.2273
  -5.250  -0.1580   0.02299   0.01316  -0.0890   0.7917   0.2343
  -5.000  -0.1347   0.02274   0.01285  -0.0880   0.7825   0.2428
  -4.750  -0.1016   0.02226   0.01239  -0.0888   0.7768   0.2516
  -4.500  -0.0786   0.02206   0.01215  -0.0879   0.7678   0.2606
  -4.250  -0.0515   0.02174   0.01185  -0.0876   0.7597   0.2697
  -4.000  -0.0169   0.02133   0.01140  -0.0886   0.7541   0.2810
  -3.750   0.0021   0.02121   0.01132  -0.0870   0.7434   0.2898
  -3.500   0.0324   0.02092   0.01101  -0.0872   0.7361   0.3012
  -3.250   0.0597   0.02069   0.01080  -0.0870   0.7284   0.3121
  -3.000   0.0840   0.02055   0.01066  -0.0863   0.7191   0.3239
  -2.750   0.1164   0.02024   0.01036  -0.0869   0.7125   0.3370
  -2.500   0.1380   0.02021   0.01033  -0.0857   0.7026   0.3500
  -2.250   0.1660   0.02000   0.01017  -0.0855   0.6948   0.3647
  -2.000   0.1944   0.01984   0.01002  -0.0855   0.6876   0.3807
  -1.750   0.2173   0.01979   0.01001  -0.0845   0.6783   0.3976
  -1.500   0.2477   0.01960   0.00983  -0.0848   0.6714   0.4182
  -1.250   0.2704   0.01955   0.00987  -0.0838   0.6627   0.4388
  -1.000   0.2959   0.01946   0.00985  -0.0832   0.6548   0.4624
  -0.750   0.3271   0.01929   0.00970  -0.0836   0.6489   0.4903
  -0.500   0.3467   0.01933   0.00989  -0.0820   0.6398   0.5170
  -0.250   0.3728   0.01925   0.00991  -0.0814   0.6325   0.5473
   0.000   0.4013   0.01918   0.00989  -0.0812   0.6262   0.5804
   0.250   0.4222   0.01927   0.01011  -0.0798   0.6181   0.6121
   0.500   0.4484   0.01927   0.01019  -0.0792   0.6115   0.6451
   0.750   0.4773   0.01928   0.01021  -0.0790   0.6055   0.6791
   1.000   0.4971   0.01943   0.01047  -0.0773   0.5977   0.7106
   1.250   0.5225   0.01950   0.01060  -0.0764   0.5911   0.7428
   1.500   0.5531   0.01954   0.01063  -0.0764   0.5859   0.7756
   1.750   0.5722   0.01978   0.01099  -0.0746   0.5783   0.8066
   2.000   0.5994   0.01994   0.01119  -0.0740   0.5714   0.8375
   2.250   0.6351   0.02007   0.01125  -0.0750   0.5658   0.8679
   2.500   0.6620   0.02038   0.01163  -0.0748   0.5580   0.8974
   2.750   0.6957   0.02062   0.01183  -0.0759   0.5507   0.9236
   3.000   0.7400   0.02080   0.01189  -0.0789   0.5447   0.9454
   3.250   0.7785   0.02119   0.01232  -0.0813   0.5368   0.9691
   3.500   0.8280   0.02149   0.01257  -0.0859   0.5295   0.9881
   3.750   0.8812   0.02168   0.01262  -0.0910   0.5236   1.0000
   4.000   0.8831   0.02196   0.01294  -0.0867   0.5171   1.0000
   4.250   0.8937   0.02218   0.01313  -0.0838   0.5110   1.0000
   4.500   0.9120   0.02235   0.01320  -0.0821   0.5057   1.0000
   4.750   0.9275   0.02260   0.01340  -0.0800   0.5003   1.0000
   5.000   0.9357   0.02295   0.01378  -0.0767   0.4939   1.0000
   5.250   0.9527   0.02321   0.01399  -0.0749   0.4881   1.0000
   5.500   0.9789   0.02339   0.01406  -0.0746   0.4831   1.0000
   5.750   0.9854   0.02386   0.01459  -0.0711   0.4767   1.0000
   6.000   0.9985   0.02422   0.01496  -0.0687   0.4705   1.0000
   6.250   1.0205   0.02447   0.01513  -0.0677   0.4650   1.0000
   6.500   1.0352   0.02486   0.01552  -0.0657   0.4593   1.0000
   6.750   1.0430   0.02538   0.01609  -0.0625   0.4527   1.0000
   7.000   1.0615   0.02571   0.01640  -0.0611   0.4469   1.0000
   7.250   1.0842   0.02602   0.01664  -0.0604   0.4415   1.0000
   7.500   1.0881   0.02674   0.01747  -0.0569   0.4345   1.0000
   7.750   1.1040   0.02719   0.01791  -0.0552   0.4282   1.0000
   8.000   1.1288   0.02743   0.01807  -0.0549   0.4228   1.0000
   8.250   1.1299   0.02837   0.01914  -0.0513   0.4154   1.0000
   8.500   1.1440   0.02890   0.01967  -0.0496   0.4086   1.0000
   8.750   1.1591   0.02940   0.02014  -0.0480   0.4015   1.0000
   9.000   1.1615   0.03039   0.02121  -0.0450   0.3929   1.0000
   9.250   1.1812   0.03068   0.02139  -0.0439   0.3856   1.0000
   9.500   1.1785   0.03206   0.02291  -0.0407   0.3767   1.0000
   9.750   1.1913   0.03273   0.02355  -0.0392   0.3693   1.0000
  10.000   1.1969   0.03390   0.02478  -0.0371   0.3617   1.0000
  10.250   1.2033   0.03506   0.02598  -0.0352   0.3541   1.0000
  10.500   1.2164   0.03585   0.02675  -0.0339   0.3475   1.0000
  10.750   1.2163   0.03756   0.02857  -0.0318   0.3395   1.0000
  11.000   1.2293   0.03840   0.02936  -0.0306   0.3329   1.0000
  11.250   1.2290   0.04028   0.03135  -0.0287   0.3251   1.0000
  11.500   1.2355   0.04167   0.03276  -0.0274   0.3179   1.0000
  11.750   1.2412   0.04321   0.03432  -0.0261   0.3109   1.0000
  12.000   1.2417   0.04522   0.03640  -0.0247   0.3033   1.0000
  12.250   1.2528   0.04634   0.03746  -0.0237   0.2968   1.0000
  12.500   1.2478   0.04905   0.04030  -0.0225   0.2889   1.0000
  12.750   1.2576   0.05034   0.04155  -0.0216   0.2823   1.0000
  13.000   1.2541   0.05307   0.04438  -0.0206   0.2749   1.0000
  13.250   1.2581   0.05506   0.04638  -0.0199   0.2679   1.0000
  13.500   1.2604   0.05730   0.04864  -0.0192   0.2611   1.0000
  13.750   1.2578   0.06013   0.05155  -0.0186   0.2537   1.0000
  14.000   1.2660   0.06175   0.05312  -0.0180   0.2475   1.0000
  14.250   1.2571   0.06549   0.05700  -0.0177   0.2399   1.0000
  14.500   1.2664   0.06702   0.05846  -0.0173   0.2338   1.0000
  14.750   1.2562   0.07108   0.06267  -0.0172   0.2265   1.0000
  15.000   1.2593   0.07344   0.06503  -0.0170   0.2201   1.0000
  15.250   1.2556   0.07679   0.06845  -0.0171   0.2136   1.0000
  15.500   1.2529   0.08003   0.07174  -0.0172   0.2072   1.0000
  15.750   1.2576   0.08229   0.07398  -0.0171   0.2016   1.0000
  16.000   1.2485   0.08653   0.07835  -0.0176   0.1952   1.0000
  16.250   1.2579   0.08814   0.07989  -0.0175   0.1902   1.0000
  16.500   1.2477   0.09265   0.08453  -0.0183   0.1844   1.0000
  16.750   1.2482   0.09562   0.08753  -0.0187   0.1793   1.0000
  17.000   1.2542   0.09779   0.08968  -0.0189   0.1748   1.0000
  17.250   1.2435   0.10253   0.09455  -0.0200   0.1695   1.0000
  17.500   1.2502   0.10460   0.09659  -0.0203   0.1652   1.0000
  17.750   1.2450   0.10854   0.10060  -0.0213   0.1605   1.0000
  18.000   1.2388   0.11269   0.10483  -0.0225   0.1557   1.0000
  18.250   1.2530   0.11360   0.10565  -0.0226   0.1519   1.0000
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