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NACA 0021 (naca0021-il) Xfoil prediction polar at RE=200,000 Ncrit=9


Details Polar file
Airfoil: NACA 0021 (naca0021-il)
Reynolds number: 200,000
Max Cl/Cd: 47.99 at α=8.75°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca0021-il-200000.txt
Download as CSV file: xf-naca0021-il-200000.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 =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.500  -1.1826   0.09047   0.08413  -0.0463   1.0000   0.0897
 -19.250  -1.2047   0.08434   0.07776  -0.0489   1.0000   0.0910
 -19.000  -1.2278   0.07832   0.07145  -0.0514   1.0000   0.0922
 -18.750  -1.2032   0.07853   0.07184  -0.0504   1.0000   0.0941
 -18.500  -1.1961   0.07650   0.06982  -0.0509   1.0000   0.0958
 -18.250  -1.1992   0.07318   0.06640  -0.0518   1.0000   0.0975
 -18.000  -1.2090   0.06910   0.06214  -0.0531   1.0000   0.0993
 -17.750  -1.2212   0.06488   0.05769  -0.0542   1.0000   0.1009
 -17.500  -1.2022   0.06431   0.05727  -0.0537   1.0000   0.1031
 -17.250  -1.1971   0.06218   0.05513  -0.0539   1.0000   0.1052
 -17.000  -1.1989   0.05930   0.05214  -0.0544   1.0000   0.1074
 -16.750  -1.2067   0.05590   0.04852  -0.0549   1.0000   0.1094
 -16.500  -1.1937   0.05462   0.04733  -0.0545   1.0000   0.1119
 -16.250  -1.1864   0.05287   0.04559  -0.0544   1.0000   0.1142
 -16.000  -1.1842   0.05064   0.04328  -0.0543   1.0000   0.1168
 -15.750  -1.1871   0.04802   0.04047  -0.0542   1.0000   0.1192
 -15.500  -1.1747   0.04673   0.03926  -0.0537   1.0000   0.1220
 -15.250  -1.1677   0.04512   0.03766  -0.0533   1.0000   0.1248
 -15.000  -1.1645   0.04322   0.03567  -0.0528   1.0000   0.1278
 -14.750  -1.1623   0.04128   0.03358  -0.0521   1.0000   0.1308
 -14.500  -1.1497   0.04012   0.03253  -0.0515   1.0000   0.1340
 -14.250  -1.1433   0.03864   0.03102  -0.0507   1.0000   0.1373
 -14.000  -1.1397   0.03701   0.02926  -0.0497   1.0000   0.1408
 -13.750  -1.1282   0.03582   0.02813  -0.0488   1.0000   0.1443
 -13.500  -1.1203   0.03459   0.02690  -0.0477   1.0000   0.1480
 -13.250  -1.1145   0.03330   0.02552  -0.0464   1.0000   0.1520
 -13.000  -1.1045   0.03217   0.02440  -0.0451   1.0000   0.1560
 -12.750  -1.0959   0.03114   0.02341  -0.0436   1.0000   0.1600
 -12.500  -1.0895   0.03011   0.02230  -0.0418   1.0000   0.1645
 -12.250  -1.0801   0.02915   0.02135  -0.0401   1.0000   0.1690
 -12.000  -1.0725   0.02831   0.02055  -0.0380   1.0000   0.1734
 -11.750  -1.0675   0.02752   0.01969  -0.0354   1.0000   0.1783
 -11.500  -1.0603   0.02674   0.01895  -0.0329   1.0000   0.1830
 -11.250  -1.0561   0.02610   0.01835  -0.0298   1.0000   0.1876
 -11.000  -1.0548   0.02555   0.01774  -0.0261   1.0000   0.1926
 -10.750  -1.0521   0.02497   0.01719  -0.0224   1.0000   0.1974
 -10.500  -1.0534   0.02452   0.01680  -0.0179   1.0000   0.2019
 -10.250  -1.0585   0.02419   0.01642  -0.0126   1.0000   0.2066
 -10.000  -1.0652   0.02387   0.01607  -0.0069   1.0000   0.2110
  -9.750  -1.0728   0.02355   0.01583  -0.0011   1.0000   0.2152
  -9.500  -1.0784   0.02330   0.01558   0.0045   1.0000   0.2200
  -9.250  -1.0798   0.02308   0.01526   0.0093   1.0000   0.2254
  -9.000  -1.0772   0.02265   0.01495   0.0132   1.0000   0.2309
  -8.750  -1.0743   0.02239   0.01469   0.0172   1.0000   0.2371
  -8.500  -1.0406   0.02193   0.01426   0.0153   0.9958   0.2467
  -8.250  -1.0014   0.02161   0.01391   0.0124   0.9914   0.2577
  -8.000  -0.9676   0.02111   0.01352   0.0106   0.9852   0.2676
  -7.750  -0.9285   0.02075   0.01314   0.0078   0.9800   0.2791
  -7.500  -0.8926   0.02036   0.01282   0.0057   0.9742   0.2901
  -7.250  -0.8568   0.01993   0.01244   0.0037   0.9675   0.3012
  -7.000  -0.8148   0.01961   0.01207   0.0006   0.9633   0.3140
  -6.750  -0.7844   0.01919   0.01179  -0.0002   0.9549   0.3247
  -6.500  -0.7448   0.01880   0.01142  -0.0027   0.9495   0.3372
  -6.250  -0.7005   0.01845   0.01107  -0.0062   0.9463   0.3509
  -6.000  -0.6726   0.01808   0.01081  -0.0063   0.9364   0.3617
  -5.750  -0.6312   0.01769   0.01043  -0.0090   0.9317   0.3752
  -5.500  -0.5890   0.01729   0.01007  -0.0118   0.9282   0.3888
  -5.250  -0.5649   0.01698   0.00984  -0.0110   0.9167   0.3996
  -5.000  -0.5284   0.01663   0.00944  -0.0125   0.9110   0.4132
  -4.750  -0.5013   0.01630   0.00924  -0.0121   0.9009   0.4244
  -4.500  -0.4704   0.01596   0.00889  -0.0124   0.8925   0.4370
  -4.250  -0.4429   0.01569   0.00867  -0.0120   0.8828   0.4490
  -4.000  -0.4151   0.01537   0.00839  -0.0117   0.8725   0.4608
  -3.750  -0.3892   0.01516   0.00815  -0.0109   0.8616   0.4733
  -3.500  -0.3617   0.01487   0.00794  -0.0104   0.8506   0.4849
  -3.250  -0.3370   0.01470   0.00772  -0.0095   0.8382   0.4975
  -3.000  -0.3091   0.01445   0.00752  -0.0090   0.8271   0.5094
  -2.750  -0.2848   0.01429   0.00737  -0.0080   0.8134   0.5217
  -2.500  -0.2571   0.01412   0.00718  -0.0075   0.8021   0.5346
  -2.250  -0.2326   0.01398   0.00709  -0.0066   0.7875   0.5465
  -2.000  -0.2073   0.01389   0.00694  -0.0057   0.7744   0.5600
  -1.750  -0.1801   0.01375   0.00684  -0.0052   0.7614   0.5721
  -1.500  -0.1557   0.01368   0.00675  -0.0043   0.7468   0.5853
  -1.250  -0.1288   0.01360   0.00668  -0.0037   0.7340   0.5982
  -1.000  -0.1032   0.01353   0.00661  -0.0029   0.7197   0.6110
  -0.750  -0.0783   0.01351   0.00657  -0.0020   0.7057   0.6251
  -0.250  -0.0264   0.01344   0.00651  -0.0006   0.6782   0.6516
   0.000   0.0000   0.01344   0.00652   0.0000   0.6650   0.6650
   0.250   0.0264   0.01344   0.00651   0.0006   0.6515   0.6782
   0.750   0.0783   0.01351   0.00657   0.0020   0.6251   0.7057
   1.000   0.1032   0.01353   0.00661   0.0029   0.6110   0.7197
   1.250   0.1288   0.01360   0.00668   0.0037   0.5982   0.7340
   1.500   0.1557   0.01368   0.00675   0.0043   0.5853   0.7468
   1.750   0.1801   0.01375   0.00684   0.0052   0.5721   0.7614
   2.000   0.2073   0.01389   0.00694   0.0057   0.5600   0.7744
   2.250   0.2326   0.01398   0.00709   0.0066   0.5465   0.7875
   2.500   0.2571   0.01412   0.00718   0.0075   0.5346   0.8021
   2.750   0.2848   0.01429   0.00737   0.0080   0.5217   0.8134
   3.000   0.3091   0.01444   0.00752   0.0090   0.5094   0.8271
   3.250   0.3371   0.01470   0.00772   0.0095   0.4975   0.8383
   3.500   0.3617   0.01486   0.00793   0.0104   0.4849   0.8506
   3.750   0.3893   0.01516   0.00815   0.0109   0.4733   0.8616
   4.000   0.4151   0.01537   0.00839   0.0116   0.4608   0.8725
   4.250   0.4429   0.01568   0.00866   0.0120   0.4490   0.8828
   4.500   0.4704   0.01595   0.00889   0.0124   0.4370   0.8925
   4.750   0.5013   0.01630   0.00924   0.0121   0.4244   0.9009
   5.000   0.5284   0.01663   0.00944   0.0125   0.4132   0.9110
   5.250   0.5649   0.01697   0.00983   0.0110   0.3996   0.9167
   5.500   0.5891   0.01728   0.01007   0.0118   0.3888   0.9282
   5.750   0.6313   0.01769   0.01042   0.0090   0.3752   0.9318
   6.000   0.6726   0.01808   0.01081   0.0063   0.3617   0.9365
   6.250   0.7006   0.01845   0.01106   0.0062   0.3509   0.9463
   6.500   0.7449   0.01880   0.01142   0.0027   0.3372   0.9496
   6.750   0.7845   0.01919   0.01178   0.0002   0.3247   0.9550
   7.000   0.8149   0.01961   0.01207  -0.0006   0.3139   0.9633
   7.250   0.8569   0.01992   0.01244  -0.0038   0.3012   0.9676
   7.500   0.8926   0.02035   0.01281  -0.0057   0.2901   0.9743
   7.750   0.9287   0.02074   0.01313  -0.0079   0.2790   0.9801
   8.000   0.9678   0.02110   0.01351  -0.0106   0.2676   0.9853
   8.250   1.0017   0.02160   0.01390  -0.0124   0.2577   0.9915
   8.500   1.0409   0.02192   0.01425  -0.0153   0.2466   0.9959
   8.750   1.0741   0.02238   0.01468  -0.0171   0.2371   1.0000
   9.000   1.0770   0.02264   0.01494  -0.0132   0.2309   1.0000
   9.250   1.0797   0.02306   0.01524  -0.0093   0.2254   1.0000
   9.500   1.0783   0.02329   0.01557  -0.0045   0.2200   1.0000
   9.750   1.0729   0.02354   0.01582   0.0010   0.2152   1.0000
  10.000   1.0653   0.02386   0.01606   0.0069   0.2110   1.0000
  10.250   1.0586   0.02418   0.01641   0.0126   0.2066   1.0000
  10.500   1.0536   0.02451   0.01678   0.0179   0.2019   1.0000
  10.750   1.0524   0.02495   0.01718   0.0223   0.1974   1.0000
  11.000   1.0551   0.02554   0.01772   0.0260   0.1926   1.0000
  11.250   1.0565   0.02609   0.01833   0.0297   0.1876   1.0000
  11.500   1.0607   0.02673   0.01893   0.0328   0.1830   1.0000
  11.750   1.0680   0.02750   0.01967   0.0354   0.1782   1.0000
  12.000   1.0731   0.02829   0.02053   0.0379   0.1734   1.0000
  12.250   1.0810   0.02913   0.02133   0.0400   0.1690   1.0000
  12.500   1.0904   0.03010   0.02228   0.0417   0.1645   1.0000
  12.750   1.0969   0.03112   0.02339   0.0435   0.1600   1.0000
  13.000   1.1057   0.03215   0.02438   0.0449   0.1559   1.0000
  13.250   1.1157   0.03329   0.02550   0.0462   0.1519   1.0000
  13.500   1.1216   0.03457   0.02688   0.0475   0.1479   1.0000
  13.750   1.1297   0.03580   0.02810   0.0486   0.1442   1.0000
  14.000   1.1411   0.03700   0.02924   0.0495   0.1407   1.0000
  14.250   1.1448   0.03862   0.03100   0.0505   0.1372   1.0000
  14.500   1.1515   0.04009   0.03250   0.0512   0.1339   1.0000
  14.750   1.1647   0.04122   0.03351   0.0519   0.1306   1.0000
  15.000   1.1663   0.04320   0.03565   0.0525   0.1277   1.0000
  15.250   1.1697   0.04508   0.03762   0.0530   0.1247   1.0000
  15.500   1.1770   0.04669   0.03921   0.0534   0.1219   1.0000
  15.750   1.1888   0.04802   0.04047   0.0539   0.1192   1.0000
  16.000   1.1862   0.05062   0.04326   0.0540   0.1167   1.0000
  16.250   1.1888   0.05282   0.04554   0.0541   0.1141   1.0000
  16.500   1.1965   0.05454   0.04724   0.0542   0.1118   1.0000
  16.750   1.2085   0.05592   0.04855   0.0545   0.1094   1.0000
  17.000   1.2012   0.05929   0.05213   0.0540   0.1073   1.0000
  17.250   1.1998   0.06212   0.05507   0.0536   0.1051   1.0000
  17.500   1.2054   0.06420   0.05716   0.0533   0.1030   1.0000
  17.750   1.2264   0.06458   0.05736   0.0540   0.1007   1.0000
  18.000   1.2113   0.06911   0.06215   0.0527   0.0992   1.0000
  18.250   1.2021   0.07314   0.06636   0.0514   0.0974   1.0000
  18.500   1.1994   0.07641   0.06972   0.0505   0.0957   1.0000
  18.750   1.2073   0.07835   0.07164   0.0501   0.0940   1.0000
  19.000   1.2296   0.07842   0.07155   0.0509   0.0921   1.0000
  19.250   1.2067   0.08443   0.07786   0.0485   0.0910   1.0000
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