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NACA 0021 (naca0021-il) Xfoil prediction polar at RE=1,000,000 Ncrit=5


Details Polar file
Airfoil: NACA 0021 (naca0021-il)
Reynolds number: 1,000,000
Max Cl/Cd: 71.04 at α=9°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca0021-il-1000000-n5.txt
Download as CSV file: xf-naca0021-il-1000000-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 =     1.000 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.750  -1.3373   0.07896   0.07414  -0.0364   1.0000   0.0448
 -19.500  -1.3450   0.07492   0.07002  -0.0376   1.0000   0.0455
 -19.250  -1.3515   0.07105   0.06608  -0.0387   1.0000   0.0462
 -19.000  -1.3565   0.06740   0.06235  -0.0396   1.0000   0.0469
 -18.750  -1.3589   0.06410   0.05898  -0.0404   1.0000   0.0475
 -18.500  -1.3639   0.06056   0.05537  -0.0412   1.0000   0.0483
 -18.250  -1.3679   0.05719   0.05194  -0.0419   1.0000   0.0491
 -18.000  -1.3701   0.05404   0.04874  -0.0424   1.0000   0.0500
 -17.750  -1.3705   0.05115   0.04578  -0.0429   1.0000   0.0509
 -17.500  -1.3691   0.04849   0.04306  -0.0432   1.0000   0.0518
 -17.250  -1.3657   0.04610   0.04062  -0.0434   1.0000   0.0526
 -17.000  -1.3643   0.04355   0.03802  -0.0436   1.0000   0.0536
 -16.750  -1.3616   0.04117   0.03560  -0.0436   1.0000   0.0547
 -16.500  -1.3571   0.03902   0.03340  -0.0436   1.0000   0.0559
 -16.250  -1.3511   0.03707   0.03140  -0.0434   1.0000   0.0571
 -16.000  -1.3433   0.03532   0.02961  -0.0432   1.0000   0.0582
 -15.750  -1.3375   0.03344   0.02770  -0.0428   1.0000   0.0596
 -15.500  -1.3302   0.03176   0.02599  -0.0424   1.0000   0.0612
 -15.250  -1.3212   0.03027   0.02447  -0.0419   1.0000   0.0627
 -15.000  -1.3106   0.02895   0.02311  -0.0413   1.0000   0.0641
 -14.750  -1.3016   0.02754   0.02168  -0.0406   1.0000   0.0657
 -14.500  -1.2912   0.02629   0.02041  -0.0399   1.0000   0.0674
 -14.250  -1.2794   0.02519   0.01928  -0.0390   1.0000   0.0690
 -14.000  -1.2666   0.02421   0.01827  -0.0382   1.0000   0.0706
 -13.750  -1.2553   0.02316   0.01721  -0.0371   1.0000   0.0724
 -13.500  -1.2431   0.02223   0.01627  -0.0360   1.0000   0.0744
 -13.250  -1.2294   0.02145   0.01547  -0.0349   1.0000   0.0762
 -13.000  -1.2168   0.02067   0.01468  -0.0335   1.0000   0.0781
 -12.750  -1.2058   0.01991   0.01392  -0.0318   1.0000   0.0804
 -12.500  -1.1949   0.01928   0.01328  -0.0298   1.0000   0.0826
 -12.000  -1.1649   0.01806   0.01206  -0.0272   0.9975   0.0874
 -11.750  -1.1393   0.01745   0.01145  -0.0278   0.9946   0.0904
 -11.500  -1.1125   0.01690   0.01090  -0.0286   0.9919   0.0932
 -11.250  -1.0902   0.01633   0.01034  -0.0284   0.9863   0.0964
 -11.000  -1.0650   0.01585   0.00986  -0.0287   0.9806   0.0999
 -10.750  -1.0420   0.01534   0.00937  -0.0285   0.9739   0.1036
 -10.500  -1.0202   0.01489   0.00892  -0.0279   0.9653   0.1075
 -10.250  -0.9996   0.01449   0.00851  -0.0270   0.9558   0.1114
 -10.000  -0.9807   0.01406   0.00809  -0.0257   0.9452   0.1162
  -9.750  -0.9613   0.01372   0.00774  -0.0243   0.9335   0.1205
  -9.500  -0.9428   0.01334   0.00737  -0.0228   0.9222   0.1257
  -9.250  -0.9225   0.01306   0.00705  -0.0216   0.9097   0.1302
  -9.000  -0.9029   0.01272   0.00672  -0.0202   0.8973   0.1357
  -8.750  -0.8820   0.01246   0.00643  -0.0190   0.8846   0.1405
  -8.500  -0.8616   0.01219   0.00614  -0.0177   0.8709   0.1458
  -8.250  -0.8412   0.01196   0.00589  -0.0163   0.8575   0.1514
  -8.000  -0.8209   0.01177   0.00566  -0.0149   0.8438   0.1563
  -7.750  -0.7993   0.01155   0.00543  -0.0138   0.8293   0.1625
  -7.500  -0.7758   0.01137   0.00522  -0.0130   0.8161   0.1679
  -7.250  -0.7530   0.01117   0.00500  -0.0120   0.8018   0.1748
  -7.000  -0.7287   0.01101   0.00482  -0.0114   0.7877   0.1808
  -6.750  -0.7053   0.01081   0.00461  -0.0106   0.7742   0.1881
  -6.250  -0.6564   0.01049   0.00426  -0.0092   0.7460   0.2022
  -6.000  -0.6314   0.01037   0.00411  -0.0087   0.7322   0.2091
  -5.750  -0.6069   0.01022   0.00395  -0.0080   0.7177   0.2171
  -5.500  -0.5812   0.01010   0.00382  -0.0076   0.7044   0.2243
  -5.250  -0.5564   0.00997   0.00367  -0.0070   0.6904   0.2326
  -5.000  -0.5305   0.00986   0.00355  -0.0066   0.6764   0.2406
  -4.750  -0.5051   0.00973   0.00342  -0.0061   0.6634   0.2492
  -4.250  -0.4536   0.00953   0.00320  -0.0052   0.6364   0.2671
  -4.000  -0.4274   0.00946   0.00311  -0.0048   0.6233   0.2760
  -3.750  -0.4015   0.00935   0.00301  -0.0044   0.6102   0.2856
  -3.500  -0.3749   0.00928   0.00293  -0.0041   0.5980   0.2946
  -3.250  -0.3491   0.00920   0.00284  -0.0036   0.5846   0.3048
  -2.750  -0.2962   0.00907   0.00270  -0.0029   0.5600   0.3245
  -2.250  -0.2427   0.00896   0.00259  -0.0023   0.5363   0.3439
  -1.750  -0.1890   0.00887   0.00250  -0.0018   0.5131   0.3634
  -1.500  -0.1618   0.00887   0.00247  -0.0016   0.5007   0.3723
  -1.250  -0.1351   0.00881   0.00243  -0.0013   0.4902   0.3832
  -1.000  -0.1079   0.00882   0.00242  -0.0010   0.4779   0.3923
  -0.750  -0.0811   0.00877   0.00239  -0.0008   0.4677   0.4035
  -0.250  -0.0270   0.00875   0.00237  -0.0002   0.4462   0.4248
   0.000   0.0000   0.00878   0.00237   0.0000   0.4345   0.4345
   0.250   0.0270   0.00875   0.00237   0.0002   0.4248   0.4462
   0.750   0.0811   0.00877   0.00239   0.0008   0.4034   0.4678
   1.000   0.1079   0.00882   0.00242   0.0010   0.3924   0.4779
   1.250   0.1351   0.00881   0.00243   0.0013   0.3832   0.4901
   1.500   0.1618   0.00887   0.00247   0.0016   0.3723   0.5008
   1.750   0.1890   0.00887   0.00250   0.0018   0.3634   0.5131
   2.250   0.2427   0.00896   0.00259   0.0023   0.3439   0.5363
   2.750   0.2962   0.00907   0.00270   0.0029   0.3245   0.5600
   3.250   0.3491   0.00920   0.00284   0.0036   0.3048   0.5846
   3.500   0.3750   0.00928   0.00293   0.0040   0.2946   0.5979
   3.750   0.4016   0.00935   0.00301   0.0043   0.2857   0.6103
   4.000   0.4275   0.00946   0.00311   0.0048   0.2760   0.6234
   4.250   0.4537   0.00952   0.00320   0.0052   0.2672   0.6365
   4.750   0.5053   0.00973   0.00342   0.0060   0.2491   0.6634
   5.000   0.5307   0.00986   0.00355   0.0065   0.2405   0.6765
   5.250   0.5565   0.00997   0.00367   0.0070   0.2325   0.6904
   5.500   0.5814   0.01010   0.00381   0.0075   0.2243   0.7043
   5.750   0.6071   0.01022   0.00395   0.0080   0.2171   0.7176
   6.000   0.6316   0.01037   0.00411   0.0086   0.2091   0.7323
   6.250   0.6567   0.01049   0.00426   0.0092   0.2022   0.7460
   6.750   0.7055   0.01081   0.00461   0.0105   0.1881   0.7742
   7.000   0.7290   0.01101   0.00482   0.0113   0.1807   0.7877
   7.250   0.7534   0.01117   0.00500   0.0119   0.1748   0.8018
   7.500   0.7761   0.01137   0.00522   0.0129   0.1679   0.8161
   7.750   0.7997   0.01156   0.00543   0.0137   0.1623   0.8293
   8.000   0.8214   0.01177   0.00566   0.0148   0.1562   0.8438
   8.250   0.8418   0.01196   0.00589   0.0162   0.1512   0.8574
   8.500   0.8622   0.01219   0.00614   0.0175   0.1457   0.8708
   8.750   0.8826   0.01246   0.00643   0.0189   0.1405   0.8845
   9.000   0.9036   0.01272   0.00672   0.0201   0.1356   0.8972
   9.250   0.9232   0.01306   0.00705   0.0214   0.1302   0.9095
   9.500   0.9436   0.01334   0.00736   0.0227   0.1258   0.9220
   9.750   0.9621   0.01372   0.00774   0.0242   0.1205   0.9334
  10.000   0.9816   0.01406   0.00809   0.0255   0.1161   0.9451
  10.250   1.0006   0.01448   0.00851   0.0268   0.1114   0.9556
  10.500   1.0210   0.01489   0.00892   0.0277   0.1076   0.9652
  10.750   1.0429   0.01534   0.00936   0.0283   0.1035   0.9738
  11.000   1.0658   0.01584   0.00985   0.0285   0.0998   0.9806
  11.250   1.0911   0.01632   0.01033   0.0283   0.0964   0.9863
  11.500   1.1135   0.01690   0.01089   0.0284   0.0931   0.9920
  11.750   1.1404   0.01744   0.01143   0.0276   0.0903   0.9947
  12.000   1.1660   0.01804   0.01204   0.0270   0.0874   0.9975
  12.500   1.1956   0.01926   0.01326   0.0297   0.0826   1.0000
  12.750   1.2068   0.01988   0.01389   0.0316   0.0803   1.0000
  13.000   1.2180   0.02065   0.01466   0.0333   0.0780   1.0000
  13.250   1.2308   0.02142   0.01544   0.0346   0.0762   1.0000
  13.500   1.2446   0.02220   0.01624   0.0358   0.0743   1.0000
  13.750   1.2570   0.02313   0.01718   0.0369   0.0724   1.0000
  14.000   1.2683   0.02417   0.01824   0.0379   0.0705   1.0000
  14.250   1.2814   0.02515   0.01924   0.0388   0.0690   1.0000
  14.500   1.2933   0.02625   0.02037   0.0395   0.0673   1.0000
  14.750   1.3038   0.02749   0.02163   0.0403   0.0656   1.0000
  15.000   1.3129   0.02890   0.02305   0.0410   0.0640   1.0000
  15.250   1.3236   0.03021   0.02441   0.0415   0.0626   1.0000
  15.500   1.3327   0.03170   0.02593   0.0420   0.0611   1.0000
  15.750   1.3401   0.03338   0.02764   0.0425   0.0595   1.0000
  16.000   1.3460   0.03525   0.02954   0.0428   0.0581   1.0000
  16.250   1.3541   0.03699   0.03132   0.0430   0.0570   1.0000
  16.500   1.3602   0.03893   0.03331   0.0432   0.0558   1.0000
  16.750   1.3647   0.04108   0.03550   0.0432   0.0547   1.0000
  17.000   1.3675   0.04346   0.03792   0.0432   0.0535   1.0000
  17.250   1.3693   0.04598   0.04049   0.0430   0.0525   1.0000
  17.500   1.3728   0.04836   0.04293   0.0428   0.0517   1.0000
  17.750   1.3741   0.05103   0.04566   0.0424   0.0508   1.0000
  18.000   1.3739   0.05392   0.04861   0.0420   0.0499   1.0000
  18.250   1.3718   0.05705   0.05180   0.0414   0.0490   1.0000
  18.500   1.3679   0.06042   0.05523   0.0407   0.0482   1.0000
  18.750   1.3634   0.06391   0.05878   0.0400   0.0475   1.0000
  19.000   1.3608   0.06724   0.06218   0.0392   0.0469   1.0000
  19.250   1.3559   0.07090   0.06592   0.0382   0.0462   1.0000
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