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NACA 0021 (naca0021-il) Xfoil prediction polar at RE=500,000 Ncrit=9


Details Polar file
Airfoil: NACA 0021 (naca0021-il)
Reynolds number: 500,000
Max Cl/Cd: 60.62 at α=10.25°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca0021-il-500000.txt
Download as CSV file: xf-naca0021-il-500000.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 =     0.500 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.750  -1.2237   0.09201   0.08687  -0.0351   1.0000   0.0669
 -19.500  -1.2258   0.08851   0.08331  -0.0364   1.0000   0.0681
 -19.250  -1.2282   0.08499   0.07969  -0.0376   1.0000   0.0693
 -19.000  -1.2301   0.08156   0.07618  -0.0387   1.0000   0.0705
 -18.750  -1.2347   0.07798   0.07260  -0.0397   1.0000   0.0718
 -18.500  -1.2386   0.07438   0.06896  -0.0407   1.0000   0.0731
 -18.250  -1.2399   0.07113   0.06565  -0.0416   1.0000   0.0745
 -18.000  -1.2400   0.06805   0.06249  -0.0425   1.0000   0.0760
 -17.750  -1.2408   0.06492   0.05928  -0.0432   1.0000   0.0775
 -17.500  -1.2455   0.06147   0.05582  -0.0439   1.0000   0.0790
 -17.250  -1.2466   0.05841   0.05273  -0.0445   1.0000   0.0806
 -17.000  -1.2451   0.05568   0.04992  -0.0450   1.0000   0.0823
 -16.750  -1.2412   0.05321   0.04736  -0.0454   1.0000   0.0840
 -16.500  -1.2432   0.05024   0.04437  -0.0457   1.0000   0.0857
 -16.250  -1.2435   0.04749   0.04159  -0.0459   1.0000   0.0874
 -16.000  -1.2401   0.04515   0.03921  -0.0461   1.0000   0.0894
 -15.750  -1.2336   0.04313   0.03711  -0.0461   1.0000   0.0914
 -15.500  -1.2310   0.04083   0.03476  -0.0460   1.0000   0.0934
 -15.250  -1.2290   0.03853   0.03245  -0.0458   1.0000   0.0954
 -15.000  -1.2228   0.03667   0.03056  -0.0455   1.0000   0.0978
 -14.750  -1.2129   0.03516   0.02898  -0.0452   1.0000   0.1002
 -14.500  -1.2091   0.03322   0.02702  -0.0446   1.0000   0.1026
 -14.250  -1.2032   0.03152   0.02530  -0.0439   1.0000   0.1052
 -14.000  -1.1933   0.03017   0.02392  -0.0433   1.0000   0.1080
 -13.750  -1.1831   0.02890   0.02260  -0.0425   1.0000   0.1107
 -13.500  -1.1771   0.02739   0.02110  -0.0414   1.0000   0.1135
 -13.250  -1.1671   0.02624   0.01993  -0.0404   1.0000   0.1167
 -13.000  -1.1535   0.02537   0.01900  -0.0394   1.0000   0.1197
 -12.750  -1.1475   0.02410   0.01775  -0.0378   1.0000   0.1231
 -12.500  -1.1375   0.02317   0.01682  -0.0363   1.0000   0.1267
 -12.250  -1.1246   0.02250   0.01610  -0.0348   1.0000   0.1302
 -12.000  -1.1200   0.02154   0.01518  -0.0323   1.0000   0.1340
 -11.750  -1.1136   0.02086   0.01450  -0.0296   1.0000   0.1378
 -11.500  -1.1058   0.02039   0.01399  -0.0268   1.0000   0.1414
 -11.250  -1.1078   0.01975   0.01338  -0.0225   1.0000   0.1450
 -11.000  -1.1107   0.01929   0.01293  -0.0177   1.0000   0.1486
 -10.750  -1.1141   0.01898   0.01260  -0.0127   1.0000   0.1521
 -10.500  -1.1224   0.01870   0.01229  -0.0067   1.0000   0.1551
 -10.250  -1.0934   0.01806   0.01171  -0.0080   0.9972   0.1620
 -10.000  -1.0611   0.01758   0.01122  -0.0096   0.9944   0.1689
  -9.750  -1.0285   0.01705   0.01074  -0.0113   0.9920   0.1766
  -9.500  -0.9983   0.01656   0.01028  -0.0124   0.9881   0.1838
  -9.250  -0.9668   0.01609   0.00984  -0.0138   0.9841   0.1917
  -9.000  -0.9330   0.01561   0.00939  -0.0155   0.9810   0.1998
  -8.750  -0.8959   0.01519   0.00899  -0.0178   0.9789   0.2085
  -8.500  -0.8643   0.01471   0.00856  -0.0190   0.9749   0.2171
  -8.250  -0.8319   0.01436   0.00821  -0.0202   0.9697   0.2255
  -8.000  -0.8001   0.01385   0.00778  -0.0214   0.9654   0.2351
  -7.750  -0.7692   0.01351   0.00745  -0.0222   0.9602   0.2438
  -7.500  -0.7466   0.01314   0.00713  -0.0212   0.9512   0.2528
  -7.250  -0.7182   0.01282   0.00681  -0.0214   0.9451   0.2617
  -7.000  -0.6987   0.01251   0.00655  -0.0197   0.9340   0.2706
  -6.750  -0.6738   0.01225   0.00627  -0.0190   0.9258   0.2795
  -6.500  -0.6532   0.01198   0.00604  -0.0175   0.9144   0.2888
  -6.250  -0.6292   0.01176   0.00580  -0.0166   0.9047   0.2978
  -6.000  -0.6071   0.01151   0.00558  -0.0154   0.8932   0.3077
  -5.750  -0.5831   0.01132   0.00538  -0.0145   0.8822   0.3171
  -5.500  -0.5596   0.01110   0.00517  -0.0135   0.8705   0.3274
  -5.250  -0.5355   0.01093   0.00500  -0.0127   0.8582   0.3373
  -5.000  -0.5109   0.01076   0.00481  -0.0119   0.8464   0.3480
  -4.750  -0.4866   0.01060   0.00467  -0.0111   0.8330   0.3581
  -4.500  -0.4615   0.01047   0.00452  -0.0104   0.8204   0.3689
  -4.250  -0.4368   0.01033   0.00437  -0.0096   0.8068   0.3794
  -4.000  -0.4113   0.01023   0.00425  -0.0090   0.7934   0.3903
  -3.750  -0.3865   0.01010   0.00411  -0.0083   0.7800   0.4011
  -3.500  -0.3605   0.01003   0.00401  -0.0078   0.7657   0.4119
  -3.250  -0.3357   0.00991   0.00391  -0.0071   0.7522   0.4230
  -2.750  -0.2845   0.00976   0.00373  -0.0059   0.7241   0.4451
  -2.500  -0.2583   0.00972   0.00365  -0.0054   0.7105   0.4559
  -2.250  -0.2331   0.00965   0.00358  -0.0048   0.6963   0.4676
  -2.000  -0.2069   0.00960   0.00352  -0.0043   0.6825   0.4787
  -1.750  -0.1814   0.00956   0.00346  -0.0037   0.6690   0.4906
  -1.500  -0.1554   0.00952   0.00342  -0.0032   0.6550   0.5020
  -1.250  -0.1295   0.00949   0.00338  -0.0027   0.6418   0.5145
  -1.000  -0.1040   0.00947   0.00334  -0.0020   0.6283   0.5262
  -0.750  -0.0774   0.00946   0.00332  -0.0016   0.6149   0.5386
  -0.500  -0.0521   0.00943   0.00331  -0.0010   0.6021   0.5510
  -0.250  -0.0258   0.00944   0.00329  -0.0006   0.5887   0.5633
   0.000   0.0000   0.00942   0.00329   0.0000   0.5763   0.5763
   0.250   0.0258   0.00944   0.00329   0.0006   0.5633   0.5887
   0.500   0.0521   0.00943   0.00331   0.0010   0.5510   0.6021
   0.750   0.0774   0.00946   0.00332   0.0016   0.5386   0.6149
   1.000   0.1040   0.00947   0.00334   0.0020   0.5262   0.6283
   1.250   0.1295   0.00949   0.00338   0.0027   0.5144   0.6418
   1.500   0.1555   0.00952   0.00341   0.0032   0.5020   0.6550
   1.750   0.1815   0.00956   0.00346   0.0037   0.4906   0.6690
   2.000   0.2069   0.00960   0.00352   0.0043   0.4786   0.6825
   2.250   0.2331   0.00965   0.00358   0.0048   0.4676   0.6963
   2.500   0.2583   0.00972   0.00365   0.0054   0.4559   0.7104
   2.750   0.2845   0.00976   0.00373   0.0059   0.4451   0.7241
   3.250   0.3357   0.00991   0.00391   0.0071   0.4230   0.7522
   3.500   0.3606   0.01003   0.00401   0.0078   0.4119   0.7658
   3.750   0.3866   0.01010   0.00411   0.0083   0.4011   0.7800
   4.000   0.4114   0.01023   0.00425   0.0090   0.3903   0.7934
   4.250   0.4369   0.01033   0.00437   0.0096   0.3793   0.8068
   4.500   0.4616   0.01047   0.00452   0.0104   0.3689   0.8204
   4.750   0.4867   0.01060   0.00467   0.0111   0.3581   0.8329
   5.000   0.5110   0.01076   0.00481   0.0119   0.3480   0.8464
   5.250   0.5356   0.01093   0.00500   0.0127   0.3373   0.8582
   5.500   0.5598   0.01110   0.00517   0.0135   0.3274   0.8705
   5.750   0.5833   0.01132   0.00538   0.0145   0.3171   0.8821
   6.000   0.6073   0.01151   0.00558   0.0153   0.3076   0.8932
   6.250   0.6294   0.01176   0.00580   0.0166   0.2978   0.9047
   6.500   0.6535   0.01198   0.00604   0.0174   0.2888   0.9144
   6.750   0.6741   0.01225   0.00627   0.0189   0.2794   0.9258
   7.000   0.6990   0.01251   0.00655   0.0196   0.2706   0.9340
   7.250   0.7185   0.01282   0.00681   0.0213   0.2617   0.9451
   7.500   0.7469   0.01314   0.00712   0.0212   0.2528   0.9512
   7.750   0.7695   0.01351   0.00744   0.0221   0.2438   0.9602
   8.000   0.8005   0.01385   0.00778   0.0213   0.2351   0.9653
   8.250   0.8323   0.01435   0.00821   0.0201   0.2255   0.9697
   8.500   0.8646   0.01470   0.00856   0.0190   0.2171   0.9749
   8.750   0.8964   0.01519   0.00899   0.0177   0.2084   0.9789
   9.000   0.9335   0.01561   0.00939   0.0154   0.1997   0.9810
   9.250   0.9673   0.01609   0.00983   0.0136   0.1916   0.9841
   9.500   0.9988   0.01656   0.01027   0.0123   0.1837   0.9882
   9.750   1.0292   0.01704   0.01073   0.0112   0.1765   0.9920
  10.000   1.0618   0.01757   0.01121   0.0095   0.1688   0.9945
  10.250   1.0941   0.01805   0.01169   0.0078   0.1620   0.9973
  10.500   1.1224   0.01868   0.01227   0.0067   0.1551   1.0000
  10.750   1.1141   0.01897   0.01258   0.0127   0.1521   1.0000
  11.000   1.1108   0.01927   0.01291   0.0177   0.1486   1.0000
  11.250   1.1079   0.01973   0.01335   0.0225   0.1450   1.0000
  11.500   1.1062   0.02037   0.01396   0.0267   0.1414   1.0000
  11.750   1.1141   0.02084   0.01448   0.0295   0.1377   1.0000
  12.000   1.1207   0.02152   0.01515   0.0322   0.1339   1.0000
  12.250   1.1256   0.02247   0.01607   0.0346   0.1302   1.0000
  12.500   1.1386   0.02315   0.01680   0.0361   0.1267   1.0000
  12.750   1.1487   0.02408   0.01773   0.0376   0.1230   1.0000
  13.000   1.1550   0.02533   0.01896   0.0392   0.1196   1.0000
  13.250   1.1687   0.02620   0.01989   0.0401   0.1166   1.0000
  13.500   1.1787   0.02736   0.02107   0.0412   0.1135   1.0000
  13.750   1.1847   0.02888   0.02257   0.0423   0.1106   1.0000
  14.000   1.1953   0.03012   0.02387   0.0430   0.1079   1.0000
  14.250   1.2052   0.03147   0.02526   0.0436   0.1051   1.0000
  14.500   1.2111   0.03319   0.02698   0.0443   0.1025   1.0000
  14.750   1.2153   0.03510   0.02891   0.0449   0.1001   1.0000
  15.000   1.2252   0.03660   0.03049   0.0452   0.0977   1.0000
  15.250   1.2315   0.03847   0.03238   0.0454   0.0953   1.0000
  15.500   1.2333   0.04078   0.03471   0.0456   0.0933   1.0000
  15.750   1.2364   0.04305   0.03702   0.0457   0.0913   1.0000
  16.000   1.2429   0.04507   0.03912   0.0457   0.0893   1.0000
  16.250   1.2463   0.04742   0.04151   0.0456   0.0873   1.0000
  16.500   1.2460   0.05018   0.04430   0.0453   0.0856   1.0000
  16.750   1.2446   0.05309   0.04724   0.0450   0.0839   1.0000
  17.000   1.2484   0.05558   0.04982   0.0446   0.0822   1.0000
  17.250   1.2499   0.05832   0.05263   0.0441   0.0805   1.0000
  17.500   1.2487   0.06139   0.05573   0.0435   0.0789   1.0000
  17.750   1.2439   0.06486   0.05921   0.0428   0.0774   1.0000
  18.000   1.2436   0.06794   0.06238   0.0420   0.0759   1.0000
  18.250   1.2437   0.07102   0.06554   0.0412   0.0744   1.0000
  18.500   1.2422   0.07429   0.06887   0.0402   0.0730   1.0000
  18.750   1.2382   0.07790   0.07251   0.0392   0.0717   1.0000
  19.000   1.2338   0.08146   0.07607   0.0382   0.0704   1.0000
  19.250   1.2320   0.08490   0.07961   0.0371   0.0692   1.0000
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