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NACA 0021 (naca0021-il) Xfoil prediction polar at RE=500,000 Ncrit=5


Details Polar file
Airfoil: NACA 0021 (naca0021-il)
Reynolds number: 500,000
Max Cl/Cd: 56.84 at α=8.75°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca0021-il-500000-n5.txt
Download as CSV file: xf-naca0021-il-500000-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 =     0.500 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.750  -1.1998   0.09619   0.09096  -0.0323   1.0000   0.0550
 -19.500  -1.2057   0.09212   0.08681  -0.0338   1.0000   0.0559
 -19.250  -1.2114   0.08810   0.08272  -0.0352   1.0000   0.0569
 -19.000  -1.2145   0.08450   0.07904  -0.0364   1.0000   0.0578
 -18.750  -1.2213   0.08040   0.07488  -0.0377   1.0000   0.0588
 -18.500  -1.2285   0.07631   0.07071  -0.0390   1.0000   0.0598
 -18.250  -1.2340   0.07249   0.06683  -0.0401   1.0000   0.0609
 -18.000  -1.2370   0.06903   0.06331  -0.0411   1.0000   0.0621
 -17.750  -1.2383   0.06580   0.06000  -0.0419   1.0000   0.0633
 -17.500  -1.2407   0.06248   0.05661  -0.0427   1.0000   0.0644
 -17.250  -1.2446   0.05905   0.05313  -0.0434   1.0000   0.0656
 -17.000  -1.2460   0.05596   0.04998  -0.0440   1.0000   0.0669
 -16.750  -1.2451   0.05316   0.04712  -0.0445   1.0000   0.0683
 -16.500  -1.2426   0.05060   0.04448  -0.0448   1.0000   0.0696
 -16.250  -1.2410   0.04798   0.04180  -0.0451   1.0000   0.0709
 -16.000  -1.2400   0.04536   0.03914  -0.0453   1.0000   0.0723
 -15.750  -1.2367   0.04301   0.03675  -0.0454   1.0000   0.0739
 -15.500  -1.2314   0.04093   0.03461  -0.0454   1.0000   0.0756
 -15.250  -1.2246   0.03904   0.03266  -0.0452   1.0000   0.0772
 -15.000  -1.2208   0.03694   0.03053  -0.0450   1.0000   0.0789
 -14.750  -1.2145   0.03511   0.02867  -0.0446   1.0000   0.0809
 -14.500  -1.2064   0.03350   0.02701  -0.0442   1.0000   0.0830
 -14.250  -1.1977   0.03199   0.02546  -0.0437   1.0000   0.0849
 -14.000  -1.1905   0.03043   0.02387  -0.0430   1.0000   0.0870
 -13.750  -1.1810   0.02909   0.02250  -0.0422   1.0000   0.0893
 -13.500  -1.1701   0.02790   0.02128  -0.0414   1.0000   0.0915
 -13.250  -1.1605   0.02670   0.02006  -0.0404   1.0000   0.0936
 -13.000  -1.1507   0.02557   0.01891  -0.0393   1.0000   0.0962
 -12.750  -1.1393   0.02461   0.01793  -0.0381   1.0000   0.0989
 -12.500  -1.1283   0.02371   0.01701  -0.0367   1.0000   0.1015
 -12.250  -1.1193   0.02279   0.01610  -0.0350   1.0000   0.1045
 -12.000  -1.1097   0.02205   0.01534  -0.0330   1.0000   0.1075
 -11.750  -1.1012   0.02140   0.01467  -0.0307   1.0000   0.1102
 -11.500  -1.0974   0.02073   0.01401  -0.0275   1.0000   0.1132
 -11.250  -1.0946   0.02020   0.01348  -0.0239   1.0000   0.1164
 -11.000  -1.0705   0.01956   0.01283  -0.0243   0.9971   0.1207
 -10.750  -1.0445   0.01886   0.01215  -0.0252   0.9937   0.1260
 -10.500  -1.0160   0.01828   0.01158  -0.0263   0.9911   0.1312
 -10.250  -0.9914   0.01766   0.01098  -0.0266   0.9858   0.1366
 -10.000  -0.9638   0.01716   0.01048  -0.0273   0.9810   0.1420
  -9.750  -0.9377   0.01660   0.00995  -0.0278   0.9758   0.1479
  -9.500  -0.9132   0.01616   0.00951  -0.0277   0.9681   0.1534
  -9.250  -0.8874   0.01565   0.00904  -0.0279   0.9618   0.1595
  -9.000  -0.8655   0.01527   0.00865  -0.0272   0.9520   0.1653
  -8.750  -0.8430   0.01484   0.00824  -0.0265   0.9433   0.1714
  -8.500  -0.8219   0.01449   0.00788  -0.0254   0.9325   0.1777
  -8.250  -0.8013   0.01414   0.00753  -0.0242   0.9219   0.1839
  -8.000  -0.7807   0.01381   0.00720  -0.0230   0.9104   0.1907
  -7.750  -0.7606   0.01353   0.00691  -0.0216   0.8982   0.1969
  -7.500  -0.7413   0.01325   0.00663  -0.0200   0.8862   0.2041
  -7.250  -0.7204   0.01304   0.00639  -0.0186   0.8729   0.2107
  -7.000  -0.6992   0.01277   0.00613  -0.0174   0.8605   0.2185
  -6.500  -0.6539   0.01234   0.00566  -0.0154   0.8339   0.2338
  -6.250  -0.6302   0.01217   0.00545  -0.0146   0.8208   0.2416
  -6.000  -0.6073   0.01196   0.00523  -0.0136   0.8068   0.2500
  -5.750  -0.5830   0.01180   0.00505  -0.0129   0.7933   0.2584
  -5.500  -0.5597   0.01162   0.00486  -0.0120   0.7796   0.2672
  -5.250  -0.5349   0.01149   0.00470  -0.0114   0.7653   0.2763
  -5.000  -0.5111   0.01132   0.00453  -0.0106   0.7516   0.2856
  -4.500  -0.4618   0.01106   0.00423  -0.0092   0.7234   0.3047
  -4.000  -0.4121   0.01084   0.00398  -0.0079   0.6956   0.3245
  -3.750  -0.3864   0.01076   0.00387  -0.0075   0.6819   0.3340
  -3.500  -0.3617   0.01066   0.00376  -0.0068   0.6684   0.3446
  -3.250  -0.3359   0.01059   0.00367  -0.0063   0.6545   0.3541
  -3.000  -0.3107   0.01050   0.00358  -0.0057   0.6416   0.3646
  -2.750  -0.2850   0.01045   0.00350  -0.0052   0.6281   0.3742
  -2.500  -0.2594   0.01037   0.00343  -0.0047   0.6151   0.3848
  -2.250  -0.2335   0.01034   0.00337  -0.0042   0.6024   0.3944
  -2.000  -0.2079   0.01027   0.00330  -0.0037   0.5892   0.4053
  -1.750  -0.1818   0.01024   0.00326  -0.0033   0.5771   0.4153
  -1.500  -0.1562   0.01020   0.00321  -0.0027   0.5642   0.4264
  -1.250  -0.1300   0.01017   0.00317  -0.0023   0.5522   0.4370
  -0.750  -0.0780   0.01012   0.00312  -0.0014   0.5279   0.4590
  -0.500  -0.0523   0.01012   0.00310  -0.0009   0.5162   0.4705
  -0.250  -0.0260   0.01010   0.00309  -0.0005   0.5042   0.4813
   0.000   0.0000   0.01011   0.00309   0.0000   0.4931   0.4931
   0.250   0.0260   0.01010   0.00309   0.0005   0.4813   0.5043
   0.500   0.0523   0.01012   0.00310   0.0009   0.4705   0.5162
   0.750   0.0780   0.01012   0.00312   0.0014   0.4590   0.5279
   1.250   0.1299   0.01017   0.00317   0.0023   0.4369   0.5523
   1.500   0.1562   0.01020   0.00321   0.0027   0.4264   0.5641
   1.750   0.1818   0.01024   0.00326   0.0033   0.4153   0.5771
   2.000   0.2079   0.01027   0.00330   0.0037   0.4052   0.5892
   2.250   0.2335   0.01034   0.00337   0.0042   0.3945   0.6024
   2.500   0.2594   0.01037   0.00343   0.0047   0.3847   0.6150
   2.750   0.2850   0.01045   0.00350   0.0052   0.3742   0.6280
   3.000   0.3108   0.01050   0.00358   0.0057   0.3647   0.6417
   3.250   0.3359   0.01059   0.00367   0.0063   0.3540   0.6545
   3.500   0.3618   0.01066   0.00376   0.0068   0.3446   0.6685
   3.750   0.3865   0.01076   0.00387   0.0074   0.3340   0.6819
   4.000   0.4122   0.01084   0.00398   0.0079   0.3245   0.6956
   4.500   0.4619   0.01106   0.00423   0.0092   0.3047   0.7234
   5.000   0.5112   0.01132   0.00453   0.0105   0.2857   0.7516
   5.250   0.5351   0.01149   0.00470   0.0113   0.2763   0.7653
   5.500   0.5599   0.01162   0.00486   0.0120   0.2672   0.7796
   5.750   0.5832   0.01180   0.00505   0.0129   0.2584   0.7933
   6.000   0.6076   0.01196   0.00523   0.0136   0.2499   0.8068
   6.250   0.6304   0.01217   0.00545   0.0145   0.2415   0.8208
   6.500   0.6542   0.01234   0.00566   0.0153   0.2337   0.8339
   7.000   0.6995   0.01277   0.00613   0.0173   0.2185   0.8605
   7.250   0.7208   0.01304   0.00639   0.0185   0.2107   0.8729
   7.500   0.7418   0.01326   0.00663   0.0199   0.2042   0.8861
   7.750   0.7611   0.01353   0.00691   0.0215   0.1969   0.8981
   8.000   0.7812   0.01381   0.00720   0.0229   0.1907   0.9103
   8.250   0.8018   0.01413   0.00753   0.0241   0.1838   0.9218
   8.500   0.8225   0.01449   0.00788   0.0253   0.1777   0.9324
   8.750   0.8435   0.01484   0.00824   0.0264   0.1713   0.9433
   9.000   0.8661   0.01527   0.00864   0.0270   0.1653   0.9520
   9.250   0.8880   0.01565   0.00903   0.0278   0.1595   0.9618
   9.500   0.9139   0.01616   0.00951   0.0276   0.1534   0.9681
   9.750   0.9383   0.01659   0.00994   0.0277   0.1478   0.9758
  10.000   0.9645   0.01715   0.01047   0.0272   0.1420   0.9810
  10.250   0.9922   0.01765   0.01097   0.0265   0.1366   0.9859
  10.500   1.0167   0.01827   0.01157   0.0262   0.1311   0.9912
  10.750   1.0454   0.01885   0.01214   0.0250   0.1259   0.9938
  11.000   1.0714   0.01955   0.01282   0.0242   0.1207   0.9972
  11.250   1.0948   0.02018   0.01346   0.0239   0.1163   1.0000
  11.500   1.0978   0.02071   0.01399   0.0275   0.1132   1.0000
  11.750   1.1017   0.02138   0.01465   0.0306   0.1102   1.0000
  12.000   1.1104   0.02202   0.01531   0.0329   0.1074   1.0000
  12.250   1.1203   0.02277   0.01607   0.0348   0.1044   1.0000
  12.500   1.1294   0.02368   0.01698   0.0365   0.1015   1.0000
  12.750   1.1406   0.02458   0.01790   0.0379   0.0989   1.0000
  13.000   1.1521   0.02554   0.01888   0.0391   0.0961   1.0000
  13.250   1.1620   0.02667   0.02002   0.0402   0.0936   1.0000
  13.500   1.1718   0.02787   0.02124   0.0412   0.0914   1.0000
  13.750   1.1829   0.02904   0.02246   0.0420   0.0892   1.0000
  14.000   1.1924   0.03038   0.02383   0.0427   0.0869   1.0000
  14.250   1.1997   0.03195   0.02541   0.0434   0.0848   1.0000
  14.500   1.2086   0.03344   0.02695   0.0439   0.0829   1.0000
  14.750   1.2167   0.03506   0.02861   0.0443   0.0808   1.0000
  15.000   1.2231   0.03688   0.03047   0.0446   0.0788   1.0000
  15.250   1.2271   0.03898   0.03260   0.0449   0.0771   1.0000
  15.500   1.2341   0.04085   0.03453   0.0450   0.0755   1.0000
  15.750   1.2395   0.04294   0.03667   0.0450   0.0738   1.0000
  16.000   1.2428   0.04528   0.03906   0.0449   0.0722   1.0000
  16.250   1.2439   0.04790   0.04172   0.0447   0.0708   1.0000
  16.500   1.2458   0.05049   0.04437   0.0445   0.0695   1.0000
  16.750   1.2485   0.05305   0.04700   0.0441   0.0682   1.0000
  17.000   1.2493   0.05585   0.04986   0.0436   0.0668   1.0000
  17.250   1.2479   0.05895   0.05302   0.0430   0.0655   1.0000
  17.500   1.2440   0.06240   0.05652   0.0422   0.0643   1.0000
  17.750   1.2421   0.06566   0.05986   0.0415   0.0632   1.0000
  18.000   1.2408   0.06889   0.06316   0.0406   0.0620   1.0000
  18.250   1.2377   0.07237   0.06671   0.0397   0.0608   1.0000
  18.500   1.2322   0.07620   0.07060   0.0386   0.0597   1.0000
  18.750   1.2250   0.08031   0.07477   0.0373   0.0587   1.0000
  19.000   1.2187   0.08434   0.07887   0.0359   0.0578   1.0000
  19.250   1.2154   0.08798   0.08260   0.0347   0.0568   1.0000
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