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NACA 0021 (naca0021-il) Xfoil prediction polar at RE=100,000 Ncrit=5


Details Polar file
Airfoil: NACA 0021 (naca0021-il)
Reynolds number: 100,000
Max Cl/Cd: 35.6 at α=8.5°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca0021-il-100000-n5.txt
Download as CSV file: xf-naca0021-il-100000-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 =     0.100 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -18.000  -0.9402   0.10752   0.09991  -0.0370   1.0000   0.1018
 -17.750  -0.9328   0.10538   0.09779  -0.0377   1.0000   0.1038
 -17.500  -0.9578   0.09795   0.09019  -0.0412   1.0000   0.1062
 -17.250  -0.9909   0.08952   0.08148  -0.0450   1.0000   0.1087
 -17.000  -0.9992   0.08512   0.07699  -0.0466   1.0000   0.1109
 -16.750  -0.9955   0.08260   0.07448  -0.0473   1.0000   0.1131
 -16.500  -1.0025   0.07853   0.07032  -0.0486   1.0000   0.1156
 -16.250  -1.0153   0.07374   0.06534  -0.0502   1.0000   0.1183
 -16.000  -1.0195   0.07026   0.06176  -0.0511   1.0000   0.1207
 -15.750  -1.0163   0.06785   0.05937  -0.0515   1.0000   0.1232
 -15.500  -1.0189   0.06474   0.05618  -0.0521   1.0000   0.1261
 -15.250  -1.0251   0.06123   0.05251  -0.0528   1.0000   0.1291
 -15.000  -1.0233   0.05880   0.05005  -0.0529   1.0000   0.1319
 -14.750  -1.0209   0.05655   0.04779  -0.0529   1.0000   0.1348
 -14.500  -1.0214   0.05400   0.04515  -0.0530   1.0000   0.1381
 -14.250  -1.0237   0.05130   0.04227  -0.0529   1.0000   0.1417
 -14.000  -1.0175   0.04963   0.04067  -0.0524   1.0000   0.1447
 -13.750  -1.0148   0.04765   0.03865  -0.0519   1.0000   0.1482
 -13.500  -1.0133   0.04558   0.03646  -0.0514   1.0000   0.1522
 -13.250  -1.0085   0.04391   0.03477  -0.0506   1.0000   0.1558
 -13.000  -1.0040   0.04231   0.03317  -0.0497   1.0000   0.1595
 -12.750  -1.0002   0.04067   0.03145  -0.0486   1.0000   0.1639
 -12.500  -0.9950   0.03921   0.02996  -0.0474   1.0000   0.1681
 -12.250  -0.9897   0.03791   0.02868  -0.0460   1.0000   0.1722
 -12.000  -0.9848   0.03661   0.02731  -0.0445   1.0000   0.1770
 -11.750  -0.9793   0.03543   0.02609  -0.0427   1.0000   0.1817
 -11.500  -0.9744   0.03437   0.02508  -0.0407   1.0000   0.1861
 -11.250  -0.9701   0.03337   0.02402  -0.0385   1.0000   0.1912
 -11.000  -0.9657   0.03245   0.02309  -0.0360   1.0000   0.1962
 -10.750  -0.9631   0.03164   0.02232  -0.0330   1.0000   0.2008
 -10.500  -0.9614   0.03091   0.02155  -0.0297   1.0000   0.2062
 -10.250  -0.9600   0.03024   0.02087  -0.0262   1.0000   0.2113
 -10.000  -0.9613   0.02966   0.02035  -0.0221   1.0000   0.2159
  -9.750  -0.9641   0.02916   0.01983  -0.0176   1.0000   0.2211
  -9.500  -0.9682   0.02873   0.01935  -0.0127   1.0000   0.2262
  -9.250  -0.9754   0.02836   0.01905  -0.0071   1.0000   0.2304
  -9.000  -0.9797   0.02800   0.01870  -0.0020   1.0000   0.2355
  -8.750  -0.9798   0.02764   0.01827   0.0023   1.0000   0.2416
  -8.500  -0.9662   0.02715   0.01787   0.0041   0.9973   0.2483
  -8.250  -0.9335   0.02663   0.01727   0.0022   0.9916   0.2585
  -8.000  -0.9040   0.02607   0.01679   0.0011   0.9844   0.2674
  -7.750  -0.8699   0.02558   0.01625  -0.0009   0.9784   0.2782
  -7.500  -0.8414   0.02509   0.01582  -0.0016   0.9702   0.2878
  -7.250  -0.8072   0.02462   0.01535  -0.0035   0.9640   0.2987
  -7.000  -0.7788   0.02420   0.01494  -0.0041   0.9554   0.3093
  -6.750  -0.7451   0.02376   0.01455  -0.0056   0.9487   0.3201
  -6.500  -0.7144   0.02337   0.01412  -0.0066   0.9409   0.3319
  -6.250  -0.6831   0.02297   0.01380  -0.0075   0.9329   0.3426
  -6.000  -0.6474   0.02256   0.01338  -0.0093   0.9270   0.3549
  -5.750  -0.6236   0.02224   0.01310  -0.0086   0.9157   0.3654
  -5.500  -0.5883   0.02183   0.01272  -0.0101   0.9093   0.3774
  -5.250  -0.5654   0.02155   0.01244  -0.0092   0.8974   0.3886
  -5.000  -0.5319   0.02118   0.01212  -0.0102   0.8900   0.4002
  -4.750  -0.5085   0.02092   0.01182  -0.0094   0.8780   0.4120
  -4.500  -0.4764   0.02057   0.01155  -0.0100   0.8698   0.4233
  -4.250  -0.4526   0.02033   0.01129  -0.0091   0.8575   0.4350
  -4.000  -0.4218   0.02001   0.01103  -0.0094   0.8485   0.4468
  -3.750  -0.3976   0.01980   0.01082  -0.0086   0.8358   0.4583
  -3.500  -0.3676   0.01951   0.01054  -0.0087   0.8263   0.4709
  -3.250  -0.3435   0.01933   0.01040  -0.0077   0.8129   0.4821
  -3.000  -0.3136   0.01906   0.01008  -0.0078   0.8032   0.4954
  -2.750  -0.2897   0.01892   0.01002  -0.0068   0.7890   0.5063
  -2.500  -0.2623   0.01872   0.00978  -0.0064   0.7775   0.5194
  -2.250  -0.2360   0.01857   0.00968  -0.0058   0.7643   0.5311
  -2.000  -0.2100   0.01842   0.00953  -0.0051   0.7513   0.5436
  -1.750  -0.1825   0.01828   0.00937  -0.0047   0.7392   0.5565
  -1.500  -0.1573   0.01819   0.00932  -0.0039   0.7251   0.5685
  -1.250  -0.1306   0.01807   0.00914  -0.0033   0.7130   0.5823
  -1.000  -0.1044   0.01802   0.00915  -0.0027   0.6989   0.5940
  -0.750  -0.0788   0.01795   0.00906  -0.0019   0.6858   0.6074
  -0.500  -0.0516   0.01791   0.00901  -0.0014   0.6731   0.6202
  -0.250  -0.0263   0.01789   0.00903  -0.0006   0.6591   0.6329
   0.000   0.0000   0.01787   0.00894   0.0000   0.6469   0.6469
   0.250   0.0263   0.01789   0.00903   0.0006   0.6329   0.6591
   0.500   0.0516   0.01791   0.00901   0.0014   0.6202   0.6731
   0.750   0.0788   0.01795   0.00906   0.0019   0.6074   0.6858
   1.000   0.1044   0.01802   0.00915   0.0027   0.5940   0.6989
   1.250   0.1306   0.01807   0.00914   0.0033   0.5823   0.7130
   1.500   0.1573   0.01819   0.00932   0.0039   0.5685   0.7251
   1.750   0.1825   0.01828   0.00937   0.0047   0.5565   0.7392
   2.000   0.2100   0.01842   0.00953   0.0051   0.5436   0.7514
   2.250   0.2360   0.01857   0.00968   0.0058   0.5311   0.7643
   2.500   0.2623   0.01872   0.00977   0.0064   0.5194   0.7775
   2.750   0.2897   0.01892   0.01002   0.0068   0.5064   0.7890
   3.000   0.3136   0.01906   0.01008   0.0078   0.4954   0.8032
   3.250   0.3435   0.01933   0.01040   0.0077   0.4821   0.8129
   3.500   0.3676   0.01951   0.01054   0.0087   0.4709   0.8263
   3.750   0.3976   0.01980   0.01082   0.0086   0.4583   0.8358
   4.000   0.4218   0.02001   0.01103   0.0094   0.4468   0.8485
   4.250   0.4526   0.02033   0.01129   0.0091   0.4350   0.8576
   4.500   0.4764   0.02057   0.01155   0.0100   0.4233   0.8698
   4.750   0.5085   0.02091   0.01182   0.0094   0.4120   0.8781
   5.000   0.5319   0.02117   0.01211   0.0102   0.4002   0.8901
   5.250   0.5654   0.02155   0.01244   0.0092   0.3886   0.8974
   5.500   0.5884   0.02183   0.01272   0.0101   0.3774   0.9094
   5.750   0.6236   0.02223   0.01310   0.0086   0.3654   0.9157
   6.000   0.6472   0.02255   0.01337   0.0093   0.3549   0.9271
   6.250   0.6832   0.02297   0.01380   0.0075   0.3426   0.9329
   6.500   0.7144   0.02337   0.01411   0.0066   0.3319   0.9410
   6.750   0.7453   0.02376   0.01454   0.0056   0.3201   0.9488
   7.000   0.7789   0.02419   0.01493   0.0040   0.3093   0.9555
   7.250   0.8074   0.02462   0.01535   0.0034   0.2987   0.9640
   7.500   0.8416   0.02508   0.01582   0.0016   0.2878   0.9703
   7.750   0.8702   0.02558   0.01624   0.0008   0.2782   0.9785
   8.000   0.9042   0.02607   0.01678  -0.0011   0.2674   0.9845
   8.250   0.9338   0.02662   0.01726  -0.0023   0.2585   0.9916
   8.500   0.9666   0.02715   0.01786  -0.0041   0.2482   0.9974
   8.750   0.9798   0.02763   0.01825  -0.0023   0.2417   1.0000
   9.000   0.9797   0.02799   0.01869   0.0020   0.2355   1.0000
   9.250   0.9755   0.02835   0.01904   0.0071   0.2303   1.0000
   9.500   0.9684   0.02872   0.01934   0.0126   0.2262   1.0000
   9.750   0.9643   0.02915   0.01981   0.0176   0.2211   1.0000
  10.000   0.9615   0.02964   0.02033   0.0221   0.2159   1.0000
  10.250   0.9603   0.03022   0.02085   0.0262   0.2113   1.0000
  10.500   0.9617   0.03089   0.02153   0.0297   0.2061   1.0000
  10.750   0.9636   0.03163   0.02230   0.0329   0.2008   1.0000
  11.000   0.9662   0.03243   0.02306   0.0359   0.1962   1.0000
  11.250   0.9707   0.03335   0.02400   0.0384   0.1912   1.0000
  11.500   0.9752   0.03435   0.02505   0.0406   0.1860   1.0000
  11.750   0.9802   0.03541   0.02607   0.0426   0.1816   1.0000
  12.000   0.9858   0.03659   0.02729   0.0443   0.1769   1.0000
  12.250   0.9907   0.03788   0.02865   0.0459   0.1721   1.0000
  12.500   0.9962   0.03918   0.02992   0.0473   0.1681   1.0000
  12.750   1.0014   0.04064   0.03143   0.0485   0.1638   1.0000
  13.000   1.0053   0.04227   0.03314   0.0495   0.1594   1.0000
  13.250   1.0100   0.04387   0.03473   0.0504   0.1557   1.0000
  13.500   1.0148   0.04556   0.03643   0.0512   0.1521   1.0000
  13.750   1.0165   0.04762   0.03861   0.0517   0.1481   1.0000
  14.000   1.0193   0.04959   0.04062   0.0522   0.1446   1.0000
  14.250   1.0255   0.05126   0.04223   0.0526   0.1416   1.0000
  14.500   1.0232   0.05397   0.04511   0.0527   0.1380   1.0000
  14.750   1.0229   0.05650   0.04773   0.0527   0.1347   1.0000
  15.000   1.0257   0.05872   0.04996   0.0527   0.1318   1.0000
  15.250   1.0271   0.06121   0.05248   0.0525   0.1290   1.0000
  15.500   1.0212   0.06468   0.05612   0.0518   0.1259   1.0000
  15.750   1.0190   0.06776   0.05927   0.0512   0.1231   1.0000
  16.000   1.0225   0.07012   0.06162   0.0509   0.1206   1.0000
  16.250   1.0175   0.07372   0.06532   0.0499   0.1182   1.0000
  16.500   1.0052   0.07846   0.07025   0.0483   0.1155   1.0000
  16.750   0.9987   0.08245   0.07433   0.0470   0.1130   1.0000
  17.000   1.0031   0.08489   0.07674   0.0463   0.1108   1.0000
  17.250   0.9931   0.08956   0.08152   0.0446   0.1086   1.0000
  17.500   0.9608   0.09786   0.09011   0.0408   0.1061   1.0000
  17.750   0.9377   0.10500   0.09740   0.0375   0.1037   1.0000
  18.000   0.9457   0.10705   0.09942   0.0368   0.1018   1.0000
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