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NACA 0021 (naca0021-il) Xfoil prediction polar at RE=200,000 Ncrit=5


Details Polar file
Airfoil: NACA 0021 (naca0021-il)
Reynolds number: 200,000
Max Cl/Cd: 43.59 at α=9.5°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca0021-il-200000-n5.txt
Download as CSV file: xf-naca0021-il-200000-n5.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: NACA 0021                                       
  
 1 1 Reynolds number fixed          Mach number fixed         
  
 xtrf =   1.000 (top)        1.000 (bottom)  
 Mach =   0.000     Re =     0.200 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.250  -1.0892   0.10249   0.09601  -0.0345   1.0000   0.0745
 -19.000  -1.0937   0.09846   0.09187  -0.0361   1.0000   0.0760
 -18.750  -1.0967   0.09470   0.08804  -0.0376   1.0000   0.0775
 -18.500  -1.0991   0.09112   0.08444  -0.0390   1.0000   0.0788
 -18.250  -1.1020   0.08745   0.08071  -0.0403   1.0000   0.0803
 -18.000  -1.1050   0.08379   0.07696  -0.0416   1.0000   0.0820
 -17.750  -1.1068   0.08032   0.07338  -0.0428   1.0000   0.0838
 -17.500  -1.1082   0.07703   0.07005  -0.0438   1.0000   0.0853
 -17.250  -1.1103   0.07364   0.06663  -0.0448   1.0000   0.0868
 -17.000  -1.1117   0.07038   0.06330  -0.0457   1.0000   0.0886
 -16.750  -1.1116   0.06735   0.06018  -0.0465   1.0000   0.0905
 -16.500  -1.1105   0.06447   0.05721  -0.0472   1.0000   0.0925
 -16.250  -1.1118   0.06140   0.05413  -0.0479   1.0000   0.0942
 -16.000  -1.1117   0.05854   0.05121  -0.0484   1.0000   0.0962
 -15.750  -1.1096   0.05593   0.04853  -0.0488   1.0000   0.0985
 -15.500  -1.1059   0.05356   0.04606  -0.0491   1.0000   0.1008
 -15.250  -1.1056   0.05090   0.04340  -0.0493   1.0000   0.1028
 -15.000  -1.1034   0.04850   0.04095  -0.0494   1.0000   0.1052
 -14.750  -1.0989   0.04638   0.03876  -0.0494   1.0000   0.1079
 -14.500  -1.0937   0.04439   0.03670  -0.0492   1.0000   0.1105
 -14.250  -1.0912   0.04223   0.03453  -0.0490   1.0000   0.1129
 -14.000  -1.0863   0.04033   0.03260  -0.0486   1.0000   0.1159
 -13.750  -1.0787   0.03873   0.03092  -0.0481   1.0000   0.1191
 -13.500  -1.0740   0.03697   0.02914  -0.0475   1.0000   0.1219
 -13.250  -1.0683   0.03535   0.02751  -0.0467   1.0000   0.1252
 -13.000  -1.0599   0.03399   0.02608  -0.0459   1.0000   0.1288
 -12.750  -1.0529   0.03260   0.02468  -0.0449   1.0000   0.1321
 -12.500  -1.0465   0.03127   0.02334  -0.0437   1.0000   0.1357
 -12.250  -1.0374   0.03017   0.02220  -0.0424   1.0000   0.1398
 -12.000  -1.0298   0.02907   0.02109  -0.0409   1.0000   0.1436
 -11.500  -1.0152   0.02716   0.01915  -0.0372   1.0000   0.1519
 -11.250  -1.0094   0.02633   0.01831  -0.0348   1.0000   0.1559
 -11.000  -1.0059   0.02554   0.01754  -0.0319   1.0000   0.1600
 -10.750  -1.0013   0.02492   0.01690  -0.0289   1.0000   0.1644
 -10.500  -0.9993   0.02434   0.01631  -0.0253   1.0000   0.1684
 -10.250  -1.0012   0.02380   0.01579  -0.0211   1.0000   0.1725
 -10.000  -1.0032   0.02339   0.01537  -0.0165   1.0000   0.1767
  -9.750  -0.9962   0.02294   0.01491  -0.0136   0.9986   0.1815
  -9.500  -0.9692   0.02226   0.01425  -0.0146   0.9937   0.1886
  -9.250  -0.9404   0.02171   0.01369  -0.0157   0.9890   0.1959
  -9.000  -0.9139   0.02111   0.01312  -0.0164   0.9828   0.2035
  -8.750  -0.8824   0.02060   0.01259  -0.0179   0.9785   0.2115
  -8.500  -0.8574   0.02007   0.01210  -0.0180   0.9712   0.2194
  -8.250  -0.8268   0.01958   0.01161  -0.0191   0.9656   0.2277
  -8.000  -0.7998   0.01909   0.01116  -0.0195   0.9589   0.2363
  -7.750  -0.7732   0.01867   0.01073  -0.0197   0.9508   0.2447
  -7.500  -0.7427   0.01820   0.01029  -0.0206   0.9452   0.2541
  -7.250  -0.7204   0.01784   0.00994  -0.0197   0.9346   0.2623
  -7.000  -0.6908   0.01742   0.00954  -0.0203   0.9281   0.2722
  -6.750  -0.6694   0.01710   0.00924  -0.0192   0.9167   0.2808
  -6.500  -0.6410   0.01672   0.00887  -0.0194   0.9090   0.2910
  -6.250  -0.6196   0.01643   0.00860  -0.0182   0.8969   0.3000
  -6.000  -0.5922   0.01609   0.00827  -0.0181   0.8883   0.3104
  -5.750  -0.5706   0.01583   0.00803  -0.0169   0.8756   0.3197
  -5.500  -0.5448   0.01556   0.00774  -0.0164   0.8653   0.3303
  -5.250  -0.5220   0.01530   0.00751  -0.0154   0.8528   0.3400
  -5.000  -0.4970   0.01508   0.00727  -0.0147   0.8411   0.3507
  -4.750  -0.4732   0.01484   0.00704  -0.0138   0.8286   0.3607
  -4.500  -0.4485   0.01467   0.00684  -0.0131   0.8159   0.3714
  -4.250  -0.4240   0.01445   0.00663  -0.0123   0.8036   0.3817
  -3.750  -0.3753   0.01413   0.00629  -0.0107   0.7769   0.4028
  -3.500  -0.3501   0.01400   0.00612  -0.0100   0.7631   0.4137
  -3.250  -0.3259   0.01385   0.00599  -0.0091   0.7495   0.4243
  -3.000  -0.3005   0.01375   0.00583  -0.0085   0.7363   0.4353
  -2.750  -0.2762   0.01363   0.00573  -0.0077   0.7221   0.4464
  -2.500  -0.2510   0.01355   0.00562  -0.0070   0.7086   0.4576
  -2.250  -0.2262   0.01346   0.00552  -0.0062   0.6951   0.4692
  -2.000  -0.2012   0.01339   0.00544  -0.0055   0.6812   0.4804
  -1.750  -0.1760   0.01333   0.00535  -0.0048   0.6681   0.4923
  -1.500  -0.1510   0.01327   0.00529  -0.0041   0.6544   0.5036
  -1.250  -0.1258   0.01323   0.00523  -0.0034   0.6413   0.5158
  -1.000  -0.1008   0.01319   0.00519  -0.0027   0.6282   0.5273
  -0.500  -0.0504   0.01314   0.00513  -0.0013   0.6023   0.5517
  -0.250  -0.0251   0.01313   0.00512  -0.0007   0.5892   0.5642
   0.000   0.0000   0.01313   0.00511   0.0000   0.5768   0.5768
   0.250   0.0251   0.01313   0.00512   0.0007   0.5642   0.5892
   0.500   0.0504   0.01314   0.00513   0.0013   0.5517   0.6023
   1.000   0.1008   0.01319   0.00519   0.0027   0.5273   0.6282
   1.250   0.1258   0.01323   0.00523   0.0034   0.5158   0.6412
   1.500   0.1510   0.01327   0.00529   0.0041   0.5036   0.6544
   1.750   0.1760   0.01333   0.00535   0.0048   0.4923   0.6681
   2.000   0.2012   0.01339   0.00544   0.0055   0.4804   0.6813
   2.250   0.2262   0.01346   0.00552   0.0062   0.4691   0.6951
   2.500   0.2511   0.01355   0.00562   0.0070   0.4576   0.7086
   2.750   0.2762   0.01363   0.00573   0.0077   0.4464   0.7222
   3.000   0.3006   0.01375   0.00583   0.0085   0.4353   0.7363
   3.250   0.3260   0.01385   0.00599   0.0091   0.4243   0.7496
   3.500   0.3501   0.01400   0.00612   0.0100   0.4137   0.7631
   3.750   0.3753   0.01413   0.00629   0.0107   0.4028   0.7769
   4.250   0.4241   0.01445   0.00663   0.0123   0.3817   0.8036
   4.500   0.4486   0.01467   0.00684   0.0131   0.3714   0.8159
   4.750   0.4733   0.01484   0.00704   0.0138   0.3607   0.8286
   5.000   0.4971   0.01508   0.00727   0.0147   0.3507   0.8411
   5.250   0.5221   0.01530   0.00751   0.0154   0.3400   0.8528
   5.500   0.5450   0.01555   0.00774   0.0164   0.3303   0.8653
   5.750   0.5707   0.01583   0.00803   0.0169   0.3196   0.8756
   6.000   0.5923   0.01609   0.00827   0.0181   0.3104   0.8883
   6.250   0.6198   0.01643   0.00860   0.0182   0.2999   0.8970
   6.500   0.6412   0.01672   0.00887   0.0194   0.2910   0.9090
   6.750   0.6696   0.01710   0.00924   0.0192   0.2808   0.9167
   7.000   0.6911   0.01741   0.00954   0.0203   0.2722   0.9281
   7.250   0.7206   0.01784   0.00994   0.0197   0.2623   0.9347
   7.500   0.7429   0.01819   0.01029   0.0205   0.2540   0.9452
   7.750   0.7735   0.01866   0.01073   0.0196   0.2446   0.9509
   8.000   0.8001   0.01909   0.01115   0.0195   0.2363   0.9590
   8.250   0.8272   0.01958   0.01161   0.0191   0.2277   0.9657
   8.500   0.8578   0.02006   0.01209   0.0180   0.2193   0.9713
   8.750   0.8829   0.02059   0.01258   0.0178   0.2114   0.9785
   9.000   0.9145   0.02110   0.01311   0.0163   0.2034   0.9829
   9.250   0.9409   0.02171   0.01368   0.0156   0.1958   0.9891
   9.500   0.9699   0.02225   0.01424   0.0145   0.1885   0.9938
   9.750   0.9969   0.02293   0.01490   0.0135   0.1814   0.9987
  10.000   1.0033   0.02337   0.01535   0.0165   0.1767   1.0000
  10.250   1.0013   0.02378   0.01577   0.0210   0.1725   1.0000
  10.500   0.9996   0.02432   0.01629   0.0253   0.1684   1.0000
  10.750   1.0017   0.02491   0.01688   0.0288   0.1644   1.0000
  11.000   1.0063   0.02552   0.01752   0.0318   0.1600   1.0000
  11.250   1.0099   0.02631   0.01829   0.0347   0.1558   1.0000
  11.500   1.0160   0.02714   0.01912   0.0370   0.1518   1.0000
  11.750   1.0243   0.02799   0.02001   0.0389   0.1475   1.0000
  12.000   1.0307   0.02905   0.02106   0.0408   0.1435   1.0000
  12.250   1.0386   0.03014   0.02217   0.0423   0.1397   1.0000
  12.500   1.0477   0.03124   0.02331   0.0435   0.1357   1.0000
  12.750   1.0542   0.03258   0.02465   0.0447   0.1320   1.0000
  13.000   1.0615   0.03395   0.02605   0.0457   0.1287   1.0000
  13.250   1.0699   0.03531   0.02747   0.0465   0.1250   1.0000
  13.500   1.0756   0.03693   0.02910   0.0473   0.1218   1.0000
  13.750   1.0806   0.03869   0.03087   0.0479   0.1190   1.0000
  14.000   1.0882   0.04029   0.03255   0.0484   0.1157   1.0000
  14.250   1.0931   0.04218   0.03448   0.0487   0.1128   1.0000
  14.500   1.0957   0.04435   0.03666   0.0490   0.1104   1.0000
  14.750   1.1011   0.04632   0.03870   0.0491   0.1078   1.0000
  15.000   1.1057   0.04845   0.04089   0.0491   0.1051   1.0000
  15.250   1.1080   0.05085   0.04334   0.0490   0.1027   1.0000
  15.500   1.1082   0.05351   0.04600   0.0487   0.1007   1.0000
  15.750   1.1123   0.05586   0.04845   0.0485   0.0984   1.0000
  16.000   1.1144   0.05847   0.05114   0.0481   0.0961   1.0000
  16.250   1.1145   0.06134   0.05406   0.0475   0.0941   1.0000
  16.500   1.1133   0.06440   0.05713   0.0468   0.0924   1.0000
  16.750   1.1145   0.06727   0.06010   0.0462   0.0904   1.0000
  17.000   1.1147   0.07031   0.06322   0.0454   0.0884   1.0000
  17.250   1.1134   0.07356   0.06654   0.0444   0.0867   1.0000
  17.500   1.1112   0.07695   0.06996   0.0434   0.0852   1.0000
  17.750   1.1101   0.08023   0.07329   0.0424   0.0837   1.0000
  18.000   1.1082   0.08371   0.07688   0.0412   0.0819   1.0000
  18.250   1.1053   0.08737   0.08062   0.0399   0.0802   1.0000
  18.500   1.1024   0.09104   0.08436   0.0385   0.0787   1.0000
  18.750   1.1002   0.09461   0.08793   0.0372   0.0774   1.0000
  19.000   1.0970   0.09840   0.09181   0.0357   0.0759   1.0000
  19.250   1.0925   0.10244   0.09597   0.0340   0.0744   1.0000
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