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NACA 4421 (naca4421-il) Xfoil prediction polar at RE=200,000 Ncrit=9


Details Polar file
Airfoil: NACA 4421 (naca4421-il)
Reynolds number: 200,000
Max Cl/Cd: 61.22 at α=7.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca4421-il-200000.txt
Download as CSV file: xf-naca4421-il-200000.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 =     0.200 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -16.250  -0.8642   0.06424   0.05861  -0.1012   1.0000   0.0823
 -16.000  -0.9048   0.05865   0.05282  -0.1021   1.0000   0.0827
 -15.750  -0.9373   0.05457   0.04858  -0.1015   1.0000   0.0831
 -15.500  -0.9666   0.05133   0.04519  -0.0999   1.0000   0.0837
 -15.250  -0.9952   0.04863   0.04234  -0.0973   1.0000   0.0842
 -15.000  -1.0239   0.04636   0.03992  -0.0939   1.0000   0.0847
 -14.750  -1.0533   0.04448   0.03788  -0.0896   1.0000   0.0851
 -14.500  -1.0833   0.04298   0.03621  -0.0843   1.0000   0.0855
 -14.250  -1.0938   0.04196   0.03518  -0.0803   1.0000   0.0863
 -14.000  -1.0974   0.04133   0.03462  -0.0767   0.9999   0.0871
 -13.750  -1.0746   0.04045   0.03376  -0.0779   0.9961   0.0888
 -13.500  -1.0601   0.03928   0.03244  -0.0784   0.9918   0.0907
 -13.250  -1.0511   0.03775   0.03062  -0.0779   0.9851   0.0927
 -13.000  -1.0216   0.03669   0.02960  -0.0796   0.9815   0.0947
 -12.750  -0.9884   0.03598   0.02892  -0.0818   0.9788   0.0971
 -12.500  -0.9744   0.03495   0.02773  -0.0809   0.9711   0.0995
 -12.250  -0.9473   0.03376   0.02640  -0.0822   0.9668   0.1023
 -12.000  -0.9096   0.03317   0.02591  -0.0849   0.9645   0.1053
 -11.750  -0.8964   0.03241   0.02502  -0.0832   0.9557   0.1081
 -11.500  -0.8659   0.03139   0.02390  -0.0847   0.9518   0.1116
 -11.250  -0.8271   0.03078   0.02335  -0.0874   0.9495   0.1153
 -11.000  -0.8153   0.03018   0.02258  -0.0851   0.9401   0.1186
 -10.750  -0.7814   0.02934   0.02179  -0.0868   0.9363   0.1225
 -10.500  -0.7435   0.02873   0.02115  -0.0892   0.9337   0.1272
 -10.250  -0.7276   0.02813   0.02039  -0.0875   0.9256   0.1309
 -10.000  -0.6949   0.02755   0.01994  -0.0888   0.9209   0.1350
  -9.750  -0.6591   0.02695   0.01918  -0.0906   0.9178   0.1403
  -9.500  -0.6179   0.02613   0.01844  -0.0935   0.9159   0.1452
  -9.250  -0.6010   0.02583   0.01812  -0.0916   0.9072   0.1491
  -9.000  -0.5691   0.02524   0.01736  -0.0925   0.9025   0.1539
  -8.750  -0.5279   0.02449   0.01675  -0.0952   0.9002   0.1589
  -8.500  -0.4880   0.02388   0.01604  -0.0975   0.8981   0.1645
  -8.250  -0.4476   0.02306   0.01524  -0.1000   0.8963   0.1695
  -8.000  -0.4353   0.02287   0.01509  -0.0970   0.8852   0.1730
  -7.750  -0.3994   0.02231   0.01443  -0.0984   0.8816   0.1784
  -7.500  -0.3609   0.02154   0.01370  -0.1004   0.8789   0.1837
  -7.250  -0.3346   0.02120   0.01338  -0.0999   0.8723   0.1885
  -7.000  -0.3089   0.02085   0.01293  -0.0994   0.8648   0.1938
  -6.750  -0.2735   0.02020   0.01235  -0.1006   0.8607   0.1996
  -6.500  -0.2356   0.01972   0.01183  -0.1023   0.8575   0.2067
  -6.250  -0.2184   0.01949   0.01158  -0.1002   0.8467   0.2121
  -6.000  -0.1855   0.01901   0.01116  -0.1009   0.8412   0.2187
  -5.750  -0.1489   0.01861   0.01061  -0.1022   0.8370   0.2268
  -5.500  -0.1306   0.01828   0.01041  -0.1003   0.8260   0.2331
  -5.250  -0.0978   0.01790   0.00997  -0.1010   0.8197   0.2423
  -5.000  -0.0704   0.01750   0.00960  -0.1007   0.8121   0.2512
  -4.750  -0.0448   0.01727   0.00935  -0.1001   0.8029   0.2611
  -4.500  -0.0121   0.01678   0.00887  -0.1008   0.7966   0.2721
  -4.250   0.0101   0.01665   0.00873  -0.0995   0.7859   0.2828
  -4.000   0.0397   0.01627   0.00838  -0.0997   0.7779   0.2945
  -3.500   0.0923   0.01586   0.00799  -0.0987   0.7596   0.3180
  -3.250   0.1225   0.01567   0.00773  -0.0990   0.7518   0.3304
  -3.000   0.1456   0.01553   0.00766  -0.0979   0.7410   0.3421
  -2.750   0.1766   0.01532   0.00740  -0.0983   0.7332   0.3554
  -2.500   0.1993   0.01526   0.00738  -0.0972   0.7225   0.3684
  -2.250   0.2278   0.01508   0.00721  -0.0971   0.7143   0.3825
  -2.000   0.2530   0.01501   0.00716  -0.0965   0.7050   0.3979
  -1.750   0.2792   0.01490   0.00707  -0.0960   0.6959   0.4159
  -1.500   0.3066   0.01479   0.00700  -0.0958   0.6876   0.4364
  -1.250   0.3301   0.01469   0.00700  -0.0948   0.6781   0.4592
  -1.000   0.3590   0.01459   0.00691  -0.0949   0.6708   0.4878
  -0.750   0.3813   0.01453   0.00700  -0.0937   0.6619   0.5176
  -0.500   0.4063   0.01442   0.00702  -0.0930   0.6538   0.5519
  -0.250   0.4332   0.01440   0.00707  -0.0926   0.6465   0.5897
   0.000   0.4551   0.01438   0.00722  -0.0912   0.6380   0.6274
   0.250   0.4814   0.01437   0.00729  -0.0906   0.6311   0.6660
   0.500   0.5063   0.01444   0.00744  -0.0897   0.6241   0.7022
   0.750   0.5290   0.01447   0.00758  -0.0884   0.6162   0.7357
   1.000   0.5554   0.01451   0.00766  -0.0877   0.6095   0.7683
   1.250   0.5789   0.01463   0.00786  -0.0864   0.6024   0.8000
   1.500   0.6013   0.01472   0.00802  -0.0849   0.5946   0.8305
   1.750   0.6286   0.01486   0.00812  -0.0842   0.5882   0.8588
   2.000   0.6539   0.01508   0.00839  -0.0832   0.5813   0.8857
   2.250   0.6823   0.01529   0.00862  -0.0829   0.5741   0.9104
   2.500   0.7187   0.01552   0.00876  -0.0842   0.5679   0.9308
   2.750   0.7561   0.01583   0.00903  -0.0860   0.5613   0.9478
   3.000   0.7952   0.01609   0.00928  -0.0883   0.5541   0.9625
   3.250   0.8459   0.01633   0.00942  -0.0929   0.5474   0.9710
   3.500   0.8941   0.01664   0.00968  -0.0972   0.5407   0.9805
   3.750   0.9427   0.01688   0.00992  -0.1016   0.5331   0.9907
   4.250   1.0212   0.01726   0.01016  -0.1070   0.5207   1.0000
   4.500   1.0287   0.01739   0.01032  -0.1035   0.5147   1.0000
   4.750   1.0424   0.01751   0.01040  -0.1011   0.5090   1.0000
   5.000   1.0653   0.01773   0.01048  -0.1003   0.5037   1.0000
   5.250   1.0729   0.01794   0.01076  -0.0967   0.4981   1.0000
   5.500   1.0853   0.01812   0.01095  -0.0938   0.4920   1.0000
   5.750   1.1048   0.01829   0.01104  -0.0923   0.4863   1.0000
   6.000   1.1250   0.01858   0.01128  -0.0910   0.4807   1.0000
   6.250   1.1343   0.01881   0.01156  -0.0876   0.4745   1.0000
   6.500   1.1521   0.01900   0.01172  -0.0858   0.4683   1.0000
   6.750   1.1796   0.01927   0.01187  -0.0859   0.4622   1.0000
   7.000   1.1849   0.01951   0.01221  -0.0817   0.4552   1.0000
   7.250   1.2000   0.01966   0.01232  -0.0794   0.4477   1.0000
   7.500   1.2183   0.01990   0.01249  -0.0778   0.4402   1.0000
   7.750   1.2230   0.02013   0.01279  -0.0736   0.4325   1.0000
   8.000   1.2411   0.02035   0.01292  -0.0720   0.4257   1.0000
   8.250   1.2533   0.02073   0.01333  -0.0694   0.4190   1.0000
   8.500   1.2631   0.02108   0.01372  -0.0665   0.4118   1.0000
   8.750   1.2850   0.02138   0.01391  -0.0656   0.4051   1.0000
   9.000   1.2918   0.02189   0.01452  -0.0624   0.3980   1.0000
   9.250   1.3035   0.02232   0.01496  -0.0600   0.3908   1.0000
   9.500   1.3228   0.02273   0.01529  -0.0589   0.3841   1.0000
   9.750   1.3283   0.02338   0.01605  -0.0558   0.3765   1.0000
  10.000   1.3432   0.02386   0.01647  -0.0542   0.3696   1.0000
  10.250   1.3534   0.02454   0.01720  -0.0520   0.3623   1.0000
  10.500   1.3621   0.02525   0.01795  -0.0496   0.3548   1.0000
  10.750   1.3776   0.02585   0.01847  -0.0483   0.3478   1.0000
  11.000   1.3822   0.02681   0.01954  -0.0457   0.3401   1.0000
  11.250   1.3954   0.02752   0.02017  -0.0442   0.3331   1.0000
  11.500   1.4012   0.02859   0.02133  -0.0420   0.3255   1.0000
  11.750   1.4092   0.02957   0.02231  -0.0401   0.3180   1.0000
  12.000   1.4172   0.03065   0.02340  -0.0383   0.3106   1.0000
  12.250   1.4224   0.03190   0.02469  -0.0364   0.3028   1.0000
  12.500   1.4312   0.03303   0.02577  -0.0349   0.2956   1.0000
  12.750   1.4335   0.03457   0.02740  -0.0330   0.2877   1.0000
  13.000   1.4423   0.03577   0.02850  -0.0316   0.2803   1.0000
  13.250   1.4417   0.03767   0.03052  -0.0299   0.2722   1.0000
  13.500   1.4501   0.03897   0.03170  -0.0286   0.2646   1.0000
  13.750   1.4475   0.04122   0.03410  -0.0271   0.2565   1.0000
  14.000   1.4543   0.04272   0.03546  -0.0259   0.2488   1.0000
  14.250   1.4494   0.04535   0.03825  -0.0246   0.2405   1.0000
  14.500   1.4536   0.04715   0.03993  -0.0235   0.2328   1.0000
  14.750   1.4480   0.05007   0.04300  -0.0226   0.2245   1.0000
  15.000   1.4493   0.05227   0.04510  -0.0217   0.2170   1.0000
  15.250   1.4441   0.05536   0.04830  -0.0211   0.2091   1.0000
  15.500   1.4446   0.05775   0.05062  -0.0204   0.2022   1.0000
  15.750   1.4401   0.06092   0.05389  -0.0201   0.1951   1.0000
  16.000   1.4426   0.06317   0.05603  -0.0196   0.1892   1.0000
  16.250   1.4393   0.06634   0.05934  -0.0194   0.1833   1.0000
  16.500   1.4409   0.06884   0.06180  -0.0192   0.1782   1.0000
  16.750   1.4423   0.07140   0.06439  -0.0190   0.1733   1.0000
  17.000   1.4412   0.07437   0.06743  -0.0190   0.1686   1.0000
  17.250   1.4477   0.07625   0.06922  -0.0187   0.1644   1.0000
  17.500   1.4463   0.07932   0.07240  -0.0189   0.1603   1.0000
  17.750   1.4463   0.08223   0.07537  -0.0191   0.1563   1.0000
  18.000   1.4538   0.08400   0.07705  -0.0189   0.1526   1.0000
  18.250   1.4530   0.08700   0.08015  -0.0192   0.1491   1.0000
  18.500   1.4523   0.09006   0.08330  -0.0196   0.1455   1.0000
  18.750   1.4567   0.09234   0.08556  -0.0198   0.1422   1.0000
  19.000   1.4636   0.09424   0.08743  -0.0198   0.1390   1.0000
  19.250   1.4589   0.09792   0.09126  -0.0206   0.1359   1.0000
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