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NACA 66(4)-221 (naca664221-il) Xfoil prediction polar at RE=500,000 Ncrit=5


Details Polar file
Airfoil: NACA 66(4)-221 (naca664221-il)
Reynolds number: 500,000
Max Cl/Cd: 69.07 at α=5.5°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca664221-il-500000-n5.txt
Download as CSV file: xf-naca664221-il-500000-n5.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: NACA 66(4)-221                                  
  
 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  -0.8469   0.08124   0.07613  -0.1035   0.8716   0.0169
 -19.500  -0.8495   0.07780   0.07254  -0.1047   0.8653   0.0169
 -19.250  -0.8507   0.07455   0.06914  -0.1058   0.8601   0.0170
 -19.000  -0.8510   0.07149   0.06595  -0.1069   0.8551   0.0171
 -18.750  -0.8509   0.06855   0.06286  -0.1077   0.8500   0.0172
 -18.500  -0.8490   0.06594   0.06012  -0.1083   0.8452   0.0173
 -18.250  -0.8461   0.06349   0.05756  -0.1088   0.8411   0.0173
 -18.000  -0.8430   0.06106   0.05501  -0.1092   0.8369   0.0174
 -17.750  -0.8393   0.05881   0.05269  -0.1095   0.8326   0.0175
 -17.500  -0.8356   0.05663   0.05044  -0.1097   0.8285   0.0177
 -17.000  -0.8243   0.05273   0.04636  -0.1098   0.8213   0.0179
 -16.750  -0.8177   0.05091   0.04448  -0.1098   0.8177   0.0181
 -16.500  -0.8108   0.04917   0.04265  -0.1097   0.8141   0.0182
 -16.250  -0.8033   0.04755   0.04095  -0.1095   0.8105   0.0183
 -16.000  -0.7949   0.04604   0.03936  -0.1092   0.8072   0.0185
 -15.750  -0.7863   0.04456   0.03780  -0.1089   0.8043   0.0187
 -15.500  -0.7770   0.04314   0.03633  -0.1086   0.8014   0.0189
 -15.250  -0.7676   0.04177   0.03488  -0.1082   0.7985   0.0191
 -15.000  -0.7575   0.04049   0.03354  -0.1077   0.7955   0.0193
 -14.750  -0.7475   0.03925   0.03222  -0.1072   0.7926   0.0195
 -14.500  -0.7368   0.03809   0.03098  -0.1066   0.7899   0.0197
 -14.250  -0.7256   0.03697   0.02978  -0.1060   0.7873   0.0201
 -14.000  -0.7136   0.03592   0.02865  -0.1054   0.7850   0.0203
 -13.750  -0.7023   0.03484   0.02752  -0.1048   0.7827   0.0204
 -13.500  -0.6912   0.03376   0.02640  -0.1040   0.7802   0.0208
 -13.250  -0.6799   0.03273   0.02534  -0.1033   0.7777   0.0211
 -13.000  -0.6676   0.03179   0.02435  -0.1025   0.7752   0.0214
 -12.750  -0.6534   0.03099   0.02351  -0.1019   0.7729   0.0219
 -12.500  -0.6393   0.03020   0.02267  -0.1012   0.7706   0.0224
 -12.250  -0.6263   0.02936   0.02177  -0.1003   0.7686   0.0228
 -12.000  -0.6116   0.02861   0.02098  -0.0996   0.7669   0.0233
 -11.750  -0.5972   0.02786   0.02018  -0.0989   0.7652   0.0238
 -11.500  -0.5823   0.02714   0.01943  -0.0981   0.7635   0.0243
 -11.250  -0.5689   0.02635   0.01864  -0.0972   0.7616   0.0249
 -11.000  -0.5537   0.02569   0.01795  -0.0964   0.7598   0.0255
 -10.750  -0.5382   0.02505   0.01728  -0.0955   0.7580   0.0264
 -10.500  -0.5221   0.02447   0.01666  -0.0948   0.7564   0.0272
 -10.250  -0.5057   0.02390   0.01604  -0.0939   0.7548   0.0277
 -10.000  -0.4899   0.02332   0.01543  -0.0931   0.7533   0.0287
  -9.750  -0.4742   0.02275   0.01485  -0.0921   0.7518   0.0297
  -9.500  -0.4573   0.02225   0.01431  -0.0913   0.7503   0.0310
  -9.250  -0.4398   0.02178   0.01381  -0.0906   0.7491   0.0322
  -9.000  -0.4232   0.02126   0.01330  -0.0897   0.7479   0.0339
  -8.750  -0.4061   0.02078   0.01283  -0.0888   0.7466   0.0361
  -8.500  -0.3893   0.02031   0.01236  -0.0879   0.7453   0.0386
  -8.250  -0.3723   0.01985   0.01191  -0.0870   0.7440   0.0419
  -8.000  -0.3554   0.01940   0.01148  -0.0860   0.7428   0.0463
  -7.750  -0.3392   0.01892   0.01104  -0.0849   0.7415   0.0540
  -7.500  -0.3251   0.01837   0.01057  -0.0835   0.7403   0.0689
  -7.250  -0.3115   0.01782   0.01010  -0.0821   0.7390   0.0862
  -7.000  -0.3008   0.01717   0.00960  -0.0802   0.7378   0.1161
  -6.750  -0.2936   0.01642   0.00904  -0.0778   0.7366   0.1572
  -6.500  -0.2868   0.01568   0.00848  -0.0752   0.7354   0.1976
  -6.250  -0.2822   0.01490   0.00789  -0.0723   0.7340   0.2411
  -6.000  -0.2798   0.01410   0.00726  -0.0690   0.7326   0.2853
  -5.750  -0.2798   0.01326   0.00661  -0.0652   0.7314   0.3282
  -5.500  -0.2836   0.01237   0.00593  -0.0606   0.7303   0.3723
  -5.250  -0.2911   0.01149   0.00524  -0.0552   0.7290   0.4148
  -5.000  -0.3063   0.01071   0.00465  -0.0480   0.7276   0.4575
  -4.750  -0.3212   0.01021   0.00433  -0.0404   0.7262   0.4999
  -4.500  -0.3318   0.00955   0.00411  -0.0334   0.7249   0.5786
  -4.250  -0.3147   0.00962   0.00437  -0.0314   0.7239   0.6423
  -4.000  -0.2901   0.00974   0.00447  -0.0310   0.7231   0.6604
  -3.750  -0.2643   0.00986   0.00456  -0.0308   0.7223   0.6720
  -3.500  -0.2372   0.01001   0.00470  -0.0308   0.7215   0.6805
  -3.250  -0.2110   0.01009   0.00472  -0.0308   0.7207   0.6869
  -3.000  -0.1812   0.01026   0.00491  -0.0313   0.7200   0.6913
  -2.750  -0.1524   0.01038   0.00501  -0.0317   0.7193   0.6954
  -2.500  -0.1248   0.01043   0.00502  -0.0319   0.7186   0.6988
  -2.250  -0.0973   0.01043   0.00496  -0.0323   0.7180   0.7008
  -2.000  -0.0701   0.01043   0.00490  -0.0325   0.7173   0.7028
  -1.750  -0.0411   0.01045   0.00493  -0.0330   0.7166   0.7050
  -1.500  -0.0115   0.01052   0.00500  -0.0336   0.7158   0.7070
  -1.250   0.0178   0.01058   0.00504  -0.0342   0.7150   0.7086
  -1.000   0.0466   0.01061   0.00505  -0.0348   0.7143   0.7095
  -0.750   0.0743   0.01061   0.00505  -0.0352   0.7138   0.7103
  -0.500   0.1018   0.01061   0.00505  -0.0355   0.7131   0.7110
  -0.250   0.1293   0.01063   0.00508  -0.0358   0.7125   0.7120
   0.000   0.1567   0.01065   0.00511  -0.0362   0.7118   0.7130
   0.250   0.1840   0.01067   0.00513  -0.0365   0.7111   0.7137
   0.500   0.2113   0.01069   0.00516  -0.0368   0.7103   0.7145
   0.750   0.2384   0.01071   0.00519  -0.0371   0.7093   0.7153
   1.000   0.2656   0.01073   0.00522  -0.0373   0.7082   0.7160
   1.250   0.2929   0.01076   0.00526  -0.0377   0.7073   0.7168
   1.500   0.3204   0.01077   0.00528  -0.0380   0.7059   0.7175
   1.750   0.3483   0.01075   0.00526  -0.0383   0.7042   0.7182
   2.000   0.3770   0.01070   0.00522  -0.0389   0.7023   0.7189
   2.250   0.4065   0.01064   0.00515  -0.0395   0.7003   0.7195
   2.500   0.4362   0.01061   0.00510  -0.0402   0.6985   0.7203
   2.750   0.4661   0.01064   0.00512  -0.0410   0.6970   0.7210
   3.000   0.4899   0.01066   0.00521  -0.0406   0.6950   0.7218
   3.250   0.5136   0.01066   0.00527  -0.0401   0.6920   0.7226
   3.500   0.5391   0.01061   0.00527  -0.0399   0.6884   0.7233
   3.750   0.5666   0.01054   0.00523  -0.0401   0.6853   0.7240
   4.000   0.5953   0.01047   0.00518  -0.0406   0.6825   0.7247
   4.250   0.6234   0.01041   0.00514  -0.0409   0.6788   0.7254
   4.500   0.6409   0.01040   0.00522  -0.0391   0.6726   0.7263
   4.750   0.6647   0.01028   0.00511  -0.0385   0.6657   0.7271
   5.000   0.6830   0.01025   0.00513  -0.0368   0.6578   0.7280
   5.250   0.7007   0.01016   0.00504  -0.0350   0.6467   0.7290
   5.500   0.7018   0.01016   0.00508  -0.0299   0.6308   0.7302
   5.750   0.6994   0.01035   0.00522  -0.0243   0.5991   0.7315
   6.000   0.6790   0.01112   0.00567  -0.0157   0.5459   0.7331
   6.250   0.6572   0.01234   0.00663  -0.0076   0.4996   0.7347
   6.500   0.6387   0.01372   0.00778  -0.0007   0.4543   0.7362
   6.750   0.6293   0.01497   0.00885   0.0046   0.4168   0.7375
   7.000   0.6236   0.01619   0.00989   0.0090   0.3803   0.7388
   7.250   0.6212   0.01735   0.01089   0.0128   0.3449   0.7399
   7.500   0.6198   0.01852   0.01189   0.0163   0.3079   0.7414
   7.750   0.6226   0.01957   0.01279   0.0192   0.2724   0.7429
   8.000   0.6246   0.02072   0.01375   0.0220   0.2334   0.7443
   8.250   0.6297   0.02176   0.01461   0.0244   0.1949   0.7457
   8.500   0.6356   0.02281   0.01548   0.0266   0.1584   0.7471
   8.750   0.6413   0.02391   0.01638   0.0287   0.1197   0.7485
   9.000   0.6510   0.02484   0.01716   0.0303   0.0928   0.7499
   9.250   0.6615   0.02577   0.01797   0.0318   0.0712   0.7513
   9.500   0.6731   0.02667   0.01877   0.0331   0.0541   0.7527
   9.750   0.6871   0.02745   0.01951   0.0340   0.0447   0.7542
  10.000   0.7020   0.02819   0.02022   0.0349   0.0385   0.7556
  10.250   0.7172   0.02894   0.02096   0.0357   0.0347   0.7569
  10.500   0.7325   0.02971   0.02172   0.0364   0.0318   0.7582
  10.750   0.7477   0.03046   0.02250   0.0372   0.0299   0.7598
  11.000   0.7629   0.03122   0.02330   0.0379   0.0281   0.7614
  11.250   0.7776   0.03202   0.02413   0.0386   0.0268   0.7630
  11.500   0.7926   0.03283   0.02499   0.0393   0.0252   0.7648
  11.750   0.8069   0.03370   0.02589   0.0400   0.0239   0.7666
  12.000   0.8205   0.03464   0.02685   0.0408   0.0228   0.7685
  12.250   0.8349   0.03554   0.02779   0.0414   0.0223   0.7705
  12.500   0.8492   0.03646   0.02876   0.0420   0.0212   0.7725
  12.750   0.8625   0.03747   0.02981   0.0426   0.0205   0.7745
  13.000   0.8748   0.03857   0.03092   0.0432   0.0196   0.7763
  13.250   0.8873   0.03966   0.03206   0.0438   0.0190   0.7782
  13.500   0.9003   0.04073   0.03319   0.0444   0.0186   0.7804
  13.750   0.9118   0.04192   0.03445   0.0450   0.0182   0.7826
  14.000   0.9235   0.04312   0.03571   0.0455   0.0175   0.7851
  14.250   0.9354   0.04434   0.03698   0.0460   0.0169   0.7876
  14.500   0.9452   0.04575   0.03844   0.0465   0.0168   0.7902
  14.750   0.9544   0.04722   0.03996   0.0470   0.0164   0.7929
  15.000   0.9627   0.04885   0.04163   0.0475   0.0161   0.7954
  15.250   0.9728   0.05033   0.04319   0.0478   0.0158   0.7980
  15.500   0.9811   0.05195   0.04491   0.0483   0.0156   0.8011
  15.750   0.9889   0.05367   0.04671   0.0486   0.0154   0.8042
  16.000   0.9968   0.05543   0.04856   0.0488   0.0152   0.8075
  16.250   1.0035   0.05733   0.05054   0.0490   0.0150   0.8108
  16.500   1.0114   0.05919   0.05246   0.0491   0.0147   0.8139
  16.750   1.0176   0.06125   0.05460   0.0491   0.0145   0.8168
  17.000   1.0229   0.06339   0.05684   0.0491   0.0145   0.8201
  17.250   1.0283   0.06559   0.05912   0.0490   0.0143   0.8236
  17.500   1.0337   0.06784   0.06146   0.0488   0.0141   0.8274
  17.750   1.0385   0.07022   0.06391   0.0485   0.0140   0.8311
  18.000   1.0414   0.07285   0.06662   0.0481   0.0139   0.8345
  18.250   1.0439   0.07554   0.06940   0.0476   0.0138   0.8383
  18.500   1.0461   0.07833   0.07228   0.0471   0.0136   0.8424
  18.750   1.0472   0.08130   0.07534   0.0464   0.0135   0.8467
  19.000   1.0486   0.08431   0.07845   0.0456   0.0134   0.8508
  19.250   1.0494   0.08739   0.08163   0.0447   0.0133   0.8550
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