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NACA 0021 (naca0021-il) Xfoil prediction polar at RE=100,000 Ncrit=9


Details Polar file
Airfoil: NACA 0021 (naca0021-il)
Reynolds number: 100,000
Max Cl/Cd: 36.59 at α=7.25°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca0021-il-100000.txt
Download as CSV file: xf-naca0021-il-100000.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 =     0.100 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -16.250  -0.5418   0.17959   0.17300  -0.0051   1.0000   0.1943
 -16.000  -0.5218   0.17458   0.16798  -0.0056   1.0000   0.1957
 -15.750  -1.0757   0.06945   0.06174  -0.0558   1.0000   0.1532
 -15.000  -1.0716   0.06221   0.05443  -0.0551   1.0000   0.1626
 -14.750  -1.1181   0.05655   0.04843  -0.0539   1.0000   0.1642
 -14.500  -1.1584   0.05230   0.04383  -0.0512   1.0000   0.1659
 -14.250  -1.1225   0.05198   0.04374  -0.0516   1.0000   0.1705
 -14.000  -1.1217   0.05028   0.04198  -0.0501   1.0000   0.1742
 -13.750  -1.1410   0.04769   0.03917  -0.0471   1.0000   0.1773
 -13.500  -1.1689   0.04524   0.03640  -0.0425   1.0000   0.1797
 -13.250  -1.1295   0.04478   0.03622  -0.0438   1.0000   0.1853
 -13.000  -1.1311   0.04343   0.03479  -0.0411   1.0000   0.1894
 -12.750  -1.1495   0.04176   0.03290  -0.0361   1.0000   0.1928
 -12.500  -1.1393   0.04058   0.03175  -0.0342   1.0000   0.1974
 -12.250  -1.1243   0.03993   0.03119  -0.0327   1.0000   0.2025
 -12.000  -1.1374   0.03889   0.03002  -0.0271   1.0000   0.2064
 -11.750  -1.1599   0.03782   0.02870  -0.0199   1.0000   0.2097
 -11.500  -1.1248   0.03722   0.02841  -0.0211   1.0000   0.2162
 -11.250  -1.1280   0.03641   0.02754  -0.0166   1.0000   0.2212
 -11.000  -1.1446   0.03548   0.02634  -0.0100   1.0000   0.2255
 -10.750  -1.1160   0.03489   0.02605  -0.0102   1.0000   0.2321
 -10.500  -1.1166   0.03422   0.02531  -0.0059   1.0000   0.2379
 -10.250  -1.1202   0.03336   0.02431  -0.0011   1.0000   0.2434
 -10.000  -1.1022   0.03292   0.02408   0.0004   1.0000   0.2500
  -9.750  -1.1033   0.03226   0.02330   0.0049   1.0000   0.2565
  -9.500  -1.0943   0.03159   0.02268   0.0077   1.0000   0.2630
  -9.250  -1.0843   0.03117   0.02232   0.0105   1.0000   0.2701
  -9.000  -1.0869   0.03049   0.02143   0.0152   1.0000   0.2772
  -8.750  -1.0682   0.03009   0.02126   0.0165   1.0000   0.2846
  -8.500  -1.0638   0.02958   0.02066   0.0201   1.0000   0.2927
  -8.250  -1.0510   0.02910   0.02027   0.0223   1.0000   0.3003
  -8.000  -1.0410   0.02874   0.01992   0.0250   1.0000   0.3089
  -7.750  -1.0310   0.02826   0.01942   0.0276   1.0000   0.3173
  -7.500  -1.0177   0.02799   0.01923   0.0297   1.0000   0.3261
  -7.250  -1.0080   0.02755   0.01873   0.0322   1.0000   0.3354
  -7.000  -0.9930   0.02735   0.01865   0.0340   1.0000   0.3444
  -6.750  -0.9825   0.02698   0.01820   0.0363   1.0000   0.3544
  -6.500  -0.9668   0.02682   0.01818   0.0379   1.0000   0.3638
  -6.250  -0.9284   0.02666   0.01804   0.0351   0.9937   0.3776
  -6.000  -0.8880   0.02654   0.01784   0.0320   0.9848   0.3929
  -5.750  -0.8396   0.02658   0.01805   0.0277   0.9774   0.4074
  -5.500  -0.8021   0.02640   0.01794   0.0254   0.9671   0.4209
  -5.250  -0.7628   0.02623   0.01776   0.0227   0.9576   0.4362
  -5.000  -0.7209   0.02613   0.01771   0.0198   0.9483   0.4515
  -4.750  -0.6844   0.02600   0.01771   0.0180   0.9377   0.4647
  -4.500  -0.6395   0.02580   0.01754   0.0147   0.9295   0.4805
  -4.250  -0.6102   0.02564   0.01736   0.0142   0.9173   0.4952
  -4.000  -0.5600   0.02548   0.01736   0.0103   0.9104   0.5102
  -3.750  -0.5318   0.02530   0.01722   0.0102   0.8979   0.5237
  -3.500  -0.4845   0.02500   0.01692   0.0068   0.8909   0.5408
  -3.250  -0.4524   0.02493   0.01698   0.0063   0.8789   0.5538
  -3.000  -0.4038   0.02461   0.01674   0.0029   0.8719   0.5695
  -2.750  -0.3715   0.02434   0.01647   0.0024   0.8613   0.5850
  -2.500  -0.3309   0.02410   0.01632   0.0008   0.8520   0.5996
  -2.250  -0.2802   0.02367   0.01597  -0.0024   0.8468   0.6147
  -2.000  -0.2618   0.02352   0.01582  -0.0004   0.8315   0.6290
  -1.750  -0.2139   0.02312   0.01549  -0.0028   0.8255   0.6439
  -1.500  -0.1906   0.02308   0.01553  -0.0014   0.8104   0.6565
  -1.250  -0.1507   0.02259   0.01501  -0.0025   0.8034   0.6726
  -0.750  -0.0906   0.02245   0.01497  -0.0015   0.7776   0.6986
  -0.500  -0.0653   0.02229   0.01480  -0.0003   0.7643   0.7139
  -0.250  -0.0304   0.02238   0.01495  -0.0005   0.7513   0.7249
   0.000   0.0000   0.02216   0.01468   0.0000   0.7398   0.7398
   0.250   0.0304   0.02238   0.01495   0.0005   0.7249   0.7513
   0.500   0.0653   0.02229   0.01480   0.0003   0.7139   0.7643
   0.750   0.0906   0.02245   0.01496   0.0015   0.6986   0.7776
   1.250   0.1507   0.02260   0.01501   0.0025   0.6726   0.8034
   1.500   0.1906   0.02308   0.01553   0.0014   0.6565   0.8104
   1.750   0.2139   0.02312   0.01549   0.0028   0.6439   0.8255
   2.000   0.2618   0.02352   0.01582   0.0004   0.6290   0.8315
   2.250   0.2802   0.02366   0.01597   0.0024   0.6147   0.8468
   2.500   0.3309   0.02410   0.01632  -0.0008   0.5996   0.8520
   2.750   0.3713   0.02434   0.01646  -0.0024   0.5850   0.8614
   3.000   0.4037   0.02461   0.01674  -0.0029   0.5695   0.8719
   3.250   0.4523   0.02492   0.01698  -0.0063   0.5538   0.8789
   3.500   0.4844   0.02500   0.01692  -0.0067   0.5408   0.8909
   3.750   0.5316   0.02530   0.01722  -0.0102   0.5237   0.8979
   4.000   0.5600   0.02548   0.01735  -0.0103   0.5102   0.9105
   4.250   0.6101   0.02563   0.01735  -0.0142   0.4952   0.9174
   4.500   0.6395   0.02580   0.01754  -0.0147   0.4805   0.9296
   4.750   0.6843   0.02599   0.01771  -0.0180   0.4647   0.9378
   5.000   0.7209   0.02612   0.01770  -0.0198   0.4515   0.9484
   5.250   0.7627   0.02622   0.01775  -0.0227   0.4362   0.9578
   5.500   0.8021   0.02639   0.01793  -0.0254   0.4210   0.9672
   5.750   0.8394   0.02657   0.01804  -0.0277   0.4075   0.9776
   6.000   0.8879   0.02653   0.01783  -0.0320   0.3929   0.9849
   6.250   0.9285   0.02665   0.01803  -0.0351   0.3776   0.9938
   6.500   0.9665   0.02681   0.01817  -0.0379   0.3639   1.0000
   6.750   0.9822   0.02697   0.01819  -0.0363   0.3545   1.0000
   7.000   0.9927   0.02734   0.01864  -0.0340   0.3445   1.0000
   7.250   1.0077   0.02754   0.01872  -0.0322   0.3354   1.0000
   7.500   1.0174   0.02798   0.01922  -0.0296   0.3261   1.0000
   7.750   1.0308   0.02825   0.01941  -0.0275   0.3173   1.0000
   8.000   1.0408   0.02873   0.01991  -0.0250   0.3089   1.0000
   8.250   1.0508   0.02909   0.02026  -0.0223   0.3003   1.0000
   8.500   1.0636   0.02957   0.02064  -0.0201   0.2927   1.0000
   8.750   1.0680   0.03008   0.02125  -0.0165   0.2846   1.0000
   9.000   1.0866   0.03048   0.02142  -0.0151   0.2772   1.0000
   9.250   1.0841   0.03116   0.02231  -0.0105   0.2701   1.0000
   9.500   1.0941   0.03159   0.02267  -0.0077   0.2630   1.0000
   9.750   1.1032   0.03225   0.02329  -0.0048   0.2565   1.0000
  10.000   1.1020   0.03291   0.02406  -0.0004   0.2500   1.0000
  10.250   1.1200   0.03335   0.02430   0.0012   0.2434   1.0000
  10.500   1.1165   0.03421   0.02530   0.0059   0.2379   1.0000
  10.750   1.1160   0.03488   0.02604   0.0102   0.2321   1.0000
  11.000   1.1445   0.03547   0.02633   0.0100   0.2255   1.0000
  11.250   1.1281   0.03640   0.02753   0.0166   0.2212   1.0000
  11.500   1.1251   0.03721   0.02840   0.0211   0.2162   1.0000
  11.750   1.1600   0.03781   0.02869   0.0199   0.2097   1.0000
  12.000   1.1377   0.03888   0.03001   0.0271   0.2064   1.0000
  12.250   1.1248   0.03992   0.03118   0.0326   0.2024   1.0000
  12.500   1.1405   0.04056   0.03173   0.0341   0.1973   1.0000
  12.750   1.1499   0.04176   0.03290   0.0360   0.1927   1.0000
  13.000   1.1318   0.04342   0.03479   0.0410   0.1893   1.0000
  13.250   1.1308   0.04476   0.03620   0.0436   0.1852   1.0000
  13.500   1.1694   0.04524   0.03641   0.0424   0.1797   1.0000
  13.750   1.1418   0.04770   0.03918   0.0470   0.1772   1.0000
  14.000   1.1230   0.05026   0.04196   0.0499   0.1741   1.0000
  14.250   1.1250   0.05190   0.04364   0.0513   0.1704   1.0000
  14.500   1.1589   0.05233   0.04386   0.0510   0.1658   1.0000
  14.750   1.1189   0.05658   0.04847   0.0537   0.1641   1.0000
  15.000   1.0729   0.06222   0.05445   0.0549   0.1625   1.0000
  15.250   0.5376   0.16648   0.15990   0.0110   0.2097   1.0000
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