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NACA 0021 (naca0021-il) Xfoil prediction polar at RE=1,000,000 Ncrit=9


Details Polar file
Airfoil: NACA 0021 (naca0021-il)
Reynolds number: 1,000,000
Max Cl/Cd: 74.74 at α=8.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca0021-il-1000000.txt
Download as CSV file: xf-naca0021-il-1000000.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 =     1.000 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.750  -1.3432   0.07827   0.07364  -0.0368   1.0000   0.0544
 -19.500  -1.3520   0.07412   0.06942  -0.0380   1.0000   0.0553
 -19.250  -1.3588   0.07026   0.06549  -0.0390   1.0000   0.0562
 -19.000  -1.3630   0.06671   0.06187  -0.0399   1.0000   0.0572
 -18.750  -1.3640   0.06359   0.05867  -0.0407   1.0000   0.0580
 -18.500  -1.3727   0.05963   0.05465  -0.0415   1.0000   0.0591
 -18.250  -1.3785   0.05608   0.05105  -0.0422   1.0000   0.0602
 -18.000  -1.3809   0.05296   0.04787  -0.0427   1.0000   0.0613
 -17.750  -1.3805   0.05018   0.04503  -0.0430   1.0000   0.0625
 -17.500  -1.3775   0.04772   0.04250  -0.0433   1.0000   0.0636
 -17.250  -1.3782   0.04492   0.03965  -0.0435   1.0000   0.0649
 -17.000  -1.3782   0.04225   0.03694  -0.0436   1.0000   0.0663
 -16.750  -1.3750   0.03997   0.03462  -0.0436   1.0000   0.0678
 -16.500  -1.3687   0.03803   0.03263  -0.0435   1.0000   0.0692
 -16.250  -1.3613   0.03623   0.03077  -0.0433   1.0000   0.0705
 -16.000  -1.3583   0.03408   0.02860  -0.0429   1.0000   0.0723
 -15.750  -1.3521   0.03228   0.02677  -0.0425   1.0000   0.0741
 -15.500  -1.3428   0.03079   0.02525  -0.0420   1.0000   0.0759
 -15.250  -1.3326   0.02943   0.02384  -0.0415   1.0000   0.0776
 -15.000  -1.3257   0.02784   0.02225  -0.0407   1.0000   0.0797
 -14.750  -1.3161   0.02652   0.02091  -0.0399   1.0000   0.0818
 -14.500  -1.3036   0.02546   0.01981  -0.0392   1.0000   0.0837
 -14.250  -1.2929   0.02431   0.01864  -0.0383   1.0000   0.0858
 -14.000  -1.2826   0.02319   0.01751  -0.0372   1.0000   0.0882
 -13.750  -1.2700   0.02226   0.01657  -0.0361   1.0000   0.0905
 -13.500  -1.2556   0.02150   0.01577  -0.0351   1.0000   0.0925
 -13.250  -1.2456   0.02055   0.01483  -0.0335   1.0000   0.0953
 -13.000  -1.2336   0.01979   0.01407  -0.0319   1.0000   0.0980
 -12.750  -1.2204   0.01920   0.01346  -0.0303   1.0000   0.1004
 -12.500  -1.2131   0.01851   0.01277  -0.0277   1.0000   0.1034
 -12.250  -1.2076   0.01796   0.01222  -0.0245   1.0000   0.1063
 -12.000  -1.2041   0.01754   0.01179  -0.0208   1.0000   0.1087
 -11.750  -1.2064   0.01719   0.01142  -0.0159   1.0000   0.1109
 -11.500  -1.1882   0.01662   0.01088  -0.0150   0.9987   0.1150
 -11.250  -1.1585   0.01613   0.01039  -0.0162   0.9967   0.1191
 -11.000  -1.1294   0.01557   0.00986  -0.0173   0.9946   0.1242
 -10.750  -1.0982   0.01510   0.00941  -0.0186   0.9929   0.1293
 -10.500  -1.0669   0.01459   0.00894  -0.0201   0.9915   0.1352
 -10.250  -1.0385   0.01417   0.00853  -0.0207   0.9880   0.1407
 -10.000  -1.0087   0.01368   0.00809  -0.0217   0.9848   0.1472
  -9.750  -0.9774   0.01330   0.00772  -0.0228   0.9815   0.1534
  -9.500  -0.9478   0.01283   0.00731  -0.0237   0.9781   0.1608
  -9.250  -0.9247   0.01253   0.00701  -0.0229   0.9702   0.1663
  -9.000  -0.9015   0.01212   0.00664  -0.0222   0.9633   0.1736
  -8.750  -0.8817   0.01186   0.00638  -0.0207   0.9536   0.1793
  -8.500  -0.8619   0.01154   0.00607  -0.0192   0.9449   0.1862
  -8.250  -0.8432   0.01131   0.00585  -0.0174   0.9340   0.1926
  -8.000  -0.8229   0.01107   0.00561  -0.0159   0.9245   0.1994
  -7.750  -0.8009   0.01083   0.00538  -0.0147   0.9138   0.2067
  -7.500  -0.7780   0.01061   0.00516  -0.0137   0.9038   0.2140
  -7.250  -0.7551   0.01040   0.00495  -0.0128   0.8925   0.2220
  -7.000  -0.7311   0.01020   0.00476  -0.0120   0.8818   0.2297
  -6.750  -0.7074   0.01001   0.00456  -0.0111   0.8700   0.2383
  -6.500  -0.6827   0.00983   0.00438  -0.0105   0.8585   0.2464
  -6.250  -0.6583   0.00966   0.00420  -0.0098   0.8462   0.2553
  -6.000  -0.6331   0.00950   0.00405  -0.0092   0.8337   0.2639
  -5.750  -0.6081   0.00935   0.00389  -0.0086   0.8212   0.2732
  -5.500  -0.5827   0.00922   0.00375  -0.0080   0.8077   0.2819
  -5.250  -0.5571   0.00908   0.00361  -0.0075   0.7947   0.2916
  -5.000  -0.5317   0.00897   0.00348  -0.0070   0.7808   0.3008
  -4.750  -0.5056   0.00885   0.00336  -0.0065   0.7672   0.3107
  -4.500  -0.4799   0.00874   0.00324  -0.0061   0.7538   0.3207
  -4.250  -0.4538   0.00866   0.00314  -0.0056   0.7393   0.3307
  -4.000  -0.4278   0.00855   0.00304  -0.0052   0.7258   0.3413
  -3.750  -0.4013   0.00849   0.00296  -0.0048   0.7121   0.3511
  -3.500  -0.3754   0.00839   0.00286  -0.0044   0.6979   0.3621
  -3.250  -0.3483   0.00835   0.00280  -0.0041   0.6846   0.3718
  -3.000  -0.3226   0.00827   0.00272  -0.0036   0.6703   0.3835
  -2.500  -0.2691   0.00816   0.00260  -0.0029   0.6438   0.4047
  -2.250  -0.2421   0.00814   0.00255  -0.0027   0.6298   0.4143
  -2.000  -0.2155   0.00807   0.00250  -0.0023   0.6173   0.4259
  -1.750  -0.1886   0.00807   0.00246  -0.0020   0.6037   0.4358
  -1.500  -0.1618   0.00801   0.00242  -0.0017   0.5909   0.4475
  -1.250  -0.1347   0.00800   0.00240  -0.0015   0.5784   0.4580
  -1.000  -0.1080   0.00798   0.00237  -0.0011   0.5652   0.4697
  -0.750  -0.0808   0.00796   0.00235  -0.0009   0.5532   0.4808
  -0.250  -0.0269   0.00793   0.00233  -0.0003   0.5288   0.5046
   0.000   0.0000   0.00796   0.00233   0.0000   0.5163   0.5163
   0.250   0.0269   0.00793   0.00233   0.0003   0.5046   0.5288
   0.750   0.0808   0.00796   0.00235   0.0009   0.4808   0.5533
   1.000   0.1080   0.00798   0.00237   0.0011   0.4698   0.5652
   1.250   0.1347   0.00800   0.00240   0.0015   0.4580   0.5784
   1.500   0.1618   0.00801   0.00242   0.0017   0.4475   0.5910
   1.750   0.1886   0.00807   0.00246   0.0020   0.4359   0.6037
   2.000   0.2155   0.00807   0.00250   0.0023   0.4260   0.6174
   2.250   0.2421   0.00814   0.00255   0.0027   0.4143   0.6298
   2.500   0.2692   0.00816   0.00260   0.0029   0.4047   0.6438
   3.000   0.3227   0.00827   0.00272   0.0036   0.3834   0.6703
   3.250   0.3483   0.00835   0.00280   0.0041   0.3718   0.6846
   3.500   0.3754   0.00839   0.00286   0.0043   0.3621   0.6979
   3.750   0.4014   0.00849   0.00296   0.0048   0.3511   0.7122
   4.000   0.4279   0.00855   0.00304   0.0052   0.3413   0.7258
   4.250   0.4539   0.00866   0.00314   0.0056   0.3308   0.7394
   4.500   0.4800   0.00874   0.00324   0.0060   0.3207   0.7538
   4.750   0.5058   0.00885   0.00336   0.0065   0.3107   0.7673
   5.000   0.5318   0.00897   0.00348   0.0069   0.3008   0.7809
   5.250   0.5573   0.00908   0.00361   0.0075   0.2915   0.7947
   5.500   0.5829   0.00922   0.00375   0.0080   0.2819   0.8077
   5.750   0.6083   0.00935   0.00389   0.0085   0.2732   0.8212
   6.000   0.6333   0.00950   0.00405   0.0091   0.2638   0.8337
   6.250   0.6585   0.00966   0.00420   0.0097   0.2553   0.8462
   6.500   0.6829   0.00983   0.00438   0.0104   0.2464   0.8584
   6.750   0.7076   0.01001   0.00456   0.0111   0.2382   0.8700
   7.000   0.7314   0.01020   0.00476   0.0119   0.2296   0.8818
   7.250   0.7554   0.01040   0.00495   0.0127   0.2220   0.8925
   7.500   0.7784   0.01061   0.00516   0.0137   0.2139   0.9037
   7.750   0.8013   0.01083   0.00538   0.0146   0.2067   0.9137
   8.000   0.8233   0.01107   0.00561   0.0158   0.1993   0.9244
   8.250   0.8438   0.01131   0.00585   0.0172   0.1925   0.9339
   8.500   0.8625   0.01154   0.00607   0.0191   0.1861   0.9447
   8.750   0.8823   0.01186   0.00638   0.0206   0.1793   0.9535
   9.000   0.9021   0.01212   0.00664   0.0221   0.1735   0.9632
   9.250   0.9253   0.01252   0.00700   0.0228   0.1663   0.9701
   9.500   0.9483   0.01283   0.00730   0.0236   0.1609   0.9780
   9.750   0.9780   0.01329   0.00772   0.0227   0.1533   0.9815
  10.000   1.0093   0.01368   0.00808   0.0216   0.1472   0.9849
  10.250   1.0390   0.01416   0.00853   0.0206   0.1407   0.9881
  10.500   1.0676   0.01458   0.00893   0.0199   0.1352   0.9915
  10.750   1.0990   0.01510   0.00940   0.0185   0.1293   0.9929
  11.000   1.1302   0.01556   0.00985   0.0171   0.1241   0.9947
  11.250   1.1594   0.01612   0.01038   0.0160   0.1191   0.9968
  11.500   1.1891   0.01661   0.01086   0.0149   0.1149   0.9988
  11.750   1.2063   0.01717   0.01140   0.0159   0.1109   1.0000
  12.000   1.2043   0.01752   0.01177   0.0208   0.1087   1.0000
  12.250   1.2080   0.01794   0.01220   0.0245   0.1062   1.0000
  12.500   1.2137   0.01849   0.01275   0.0276   0.1033   1.0000
  12.750   1.2213   0.01918   0.01343   0.0302   0.1004   1.0000
  13.000   1.2347   0.01977   0.01405   0.0318   0.0980   1.0000
  13.250   1.2468   0.02053   0.01481   0.0333   0.0953   1.0000
  13.500   1.2570   0.02148   0.01575   0.0348   0.0924   1.0000
  13.750   1.2716   0.02223   0.01654   0.0358   0.0904   1.0000
  14.000   1.2842   0.02316   0.01748   0.0369   0.0881   1.0000
  14.250   1.2946   0.02428   0.01861   0.0380   0.0857   1.0000
  14.500   1.3057   0.02541   0.01976   0.0389   0.0836   1.0000
  14.750   1.3182   0.02648   0.02086   0.0396   0.0817   1.0000
  15.000   1.3279   0.02780   0.02220   0.0404   0.0796   1.0000
  15.250   1.3347   0.02939   0.02380   0.0412   0.0774   1.0000
  15.500   1.3454   0.03072   0.02518   0.0417   0.0758   1.0000
  15.750   1.3546   0.03222   0.02671   0.0421   0.0740   1.0000
  16.000   1.3609   0.03402   0.02854   0.0425   0.0722   1.0000
  16.250   1.3639   0.03617   0.03071   0.0429   0.0704   1.0000
  16.500   1.3719   0.03793   0.03253   0.0431   0.0691   1.0000
  16.750   1.3781   0.03987   0.03452   0.0432   0.0677   1.0000
  17.000   1.3814   0.04216   0.03685   0.0432   0.0662   1.0000
  17.250   1.3813   0.04484   0.03957   0.0431   0.0648   1.0000
  17.500   1.3813   0.04758   0.04236   0.0429   0.0636   1.0000
  17.750   1.3843   0.05004   0.04489   0.0426   0.0624   1.0000
  18.000   1.3848   0.05282   0.04773   0.0422   0.0612   1.0000
  18.250   1.3824   0.05595   0.05091   0.0417   0.0601   1.0000
  18.500   1.3766   0.05951   0.05452   0.0410   0.0590   1.0000
  18.750   1.3688   0.06336   0.05844   0.0402   0.0579   1.0000
  19.000   1.3675   0.06653   0.06168   0.0394   0.0571   1.0000
  19.250   1.3631   0.07010   0.06533   0.0385   0.0561   1.0000
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