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NACA 66(4)-221 (naca664221-il) Xfoil prediction polar at RE=500,000 Ncrit=9


Details Polar file
Airfoil: NACA 66(4)-221 (naca664221-il)
Reynolds number: 500,000
Max Cl/Cd: 68.63 at α=6.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca664221-il-500000.txt
Download as CSV file: xf-naca664221-il-500000.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 =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.500  -0.7343   0.09525   0.09169  -0.1038   0.9457   0.0245
 -19.250  -0.7638   0.08632   0.08244  -0.1099   0.9359   0.0243
 -19.000  -0.7832   0.08028   0.07614  -0.1132   0.9247   0.0242
 -18.500  -0.8168   0.07091   0.06631  -0.1158   0.9056   0.0242
 -18.000  -0.8376   0.06409   0.05910  -0.1161   0.8908   0.0241
 -17.750  -0.8491   0.06045   0.05525  -0.1159   0.8847   0.0242
 -17.500  -0.8557   0.05721   0.05180  -0.1155   0.8793   0.0242
 -17.250  -0.8582   0.05490   0.04935  -0.1149   0.8738   0.0242
 -17.000  -0.8540   0.05227   0.04655  -0.1146   0.8691   0.0244
 -16.750  -0.8462   0.05032   0.04448  -0.1143   0.8646   0.0246
 -16.500  -0.8378   0.04877   0.04286  -0.1140   0.8601   0.0249
 -16.250  -0.8303   0.04701   0.04099  -0.1135   0.8559   0.0249
 -16.000  -0.8225   0.04562   0.03953  -0.1130   0.8516   0.0253
 -15.750  -0.8120   0.04432   0.03814  -0.1125   0.8476   0.0256
 -15.500  -0.8013   0.04297   0.03666  -0.1120   0.8438   0.0258
 -15.250  -0.7892   0.04166   0.03526  -0.1115   0.8405   0.0260
 -15.000  -0.7757   0.04045   0.03395  -0.1111   0.8372   0.0262
 -14.750  -0.7608   0.03932   0.03273  -0.1106   0.8339   0.0264
 -14.500  -0.7455   0.03830   0.03161  -0.1102   0.8307   0.0266
 -14.250  -0.7301   0.03732   0.03052  -0.1097   0.8276   0.0270
 -14.000  -0.7143   0.03644   0.02952  -0.1092   0.8242   0.0273
 -13.750  -0.6965   0.03560   0.02862  -0.1089   0.8218   0.0275
 -13.500  -0.6811   0.03472   0.02765  -0.1083   0.8191   0.0279
 -13.250  -0.6636   0.03393   0.02680  -0.1079   0.8165   0.0281
 -13.000  -0.6425   0.03322   0.02608  -0.1076   0.8142   0.0286
 -12.750  -0.6264   0.03244   0.02531  -0.1071   0.8118   0.0291
 -12.500  -0.6109   0.03168   0.02452  -0.1064   0.8094   0.0297
 -12.250  -0.5957   0.03093   0.02372  -0.1057   0.8070   0.0302
 -12.000  -0.5803   0.03023   0.02297  -0.1051   0.8047   0.0308
 -11.750  -0.5653   0.02948   0.02219  -0.1043   0.8030   0.0315
 -11.500  -0.5495   0.02881   0.02147  -0.1037   0.8010   0.0322
 -11.250  -0.5369   0.02794   0.02058  -0.1025   0.7990   0.0329
 -11.000  -0.5248   0.02709   0.01974  -0.1014   0.7970   0.0338
 -10.750  -0.5112   0.02635   0.01899  -0.1004   0.7950   0.0349
 -10.500  -0.4967   0.02568   0.01828  -0.0995   0.7932   0.0359
 -10.250  -0.4819   0.02503   0.01758  -0.0985   0.7915   0.0367
 -10.000  -0.4695   0.02428   0.01680  -0.0972   0.7898   0.0380
  -9.750  -0.4570   0.02358   0.01609  -0.0959   0.7880   0.0395
  -9.500  -0.4418   0.02306   0.01554  -0.0949   0.7863   0.0412
  -9.250  -0.4262   0.02251   0.01497  -0.0939   0.7851   0.0428
  -9.000  -0.4140   0.02181   0.01430  -0.0925   0.7838   0.0457
  -8.750  -0.3982   0.02130   0.01379  -0.0915   0.7824   0.0490
  -8.500  -0.3848   0.02070   0.01323  -0.0901   0.7809   0.0538
  -8.250  -0.3715   0.02012   0.01269  -0.0887   0.7794   0.0615
  -8.000  -0.3612   0.01941   0.01211  -0.0868   0.7778   0.0807
  -7.750  -0.3599   0.01838   0.01139  -0.0838   0.7761   0.1317
  -7.500  -0.3623   0.01728   0.01063  -0.0801   0.7746   0.1968
  -7.250  -0.3647   0.01624   0.00987  -0.0764   0.7731   0.2537
  -7.000  -0.3704   0.01517   0.00907  -0.0720   0.7717   0.3106
  -6.750  -0.3824   0.01400   0.00817  -0.0665   0.7702   0.3678
  -6.500  -0.3948   0.01302   0.00740  -0.0607   0.7684   0.4169
  -6.250  -0.4111   0.01204   0.00665  -0.0539   0.7671   0.4647
  -6.000  -0.4344   0.01138   0.00620  -0.0451   0.7656   0.5058
  -5.750  -0.4551   0.01095   0.00610  -0.0363   0.7640   0.5616
  -5.500  -0.4481   0.01103   0.00645  -0.0323   0.7627   0.6309
  -5.250  -0.4287   0.01118   0.00655  -0.0310   0.7617   0.6522
  -5.000  -0.4054   0.01140   0.00674  -0.0303   0.7607   0.6654
  -4.750  -0.3788   0.01169   0.00702  -0.0302   0.7598   0.6745
  -4.500  -0.3551   0.01193   0.00720  -0.0296   0.7589   0.6838
  -4.250  -0.3228   0.01250   0.00782  -0.0302   0.7579   0.6930
  -4.000  -0.2993   0.01293   0.00819  -0.0294   0.7569   0.7030
  -3.750  -0.2589   0.01378   0.00913  -0.0313   0.7563   0.7091
  -3.500  -0.2238   0.01448   0.00984  -0.0323   0.7557   0.7143
  -3.250  -0.2015   0.01471   0.01001  -0.0316   0.7549   0.7205
  -3.000  -0.1700   0.01501   0.01031  -0.0323   0.7542   0.7233
  -2.750  -0.1357   0.01544   0.01075  -0.0335   0.7537   0.7251
  -2.500  -0.1014   0.01592   0.01123  -0.0346   0.7531   0.7270
  -2.250  -0.0699   0.01625   0.01156  -0.0354   0.7525   0.7287
  -2.000  -0.0424   0.01641   0.01169  -0.0356   0.7519   0.7305
  -1.750  -0.0182   0.01644   0.01170  -0.0354   0.7511   0.7327
  -1.500   0.0014   0.01642   0.01163  -0.0346   0.7500   0.7358
  -1.250   0.0149   0.01631   0.01147  -0.0329   0.7489   0.7394
  -1.000   0.0370   0.01639   0.01160  -0.0323   0.7480   0.7413
  -0.750   0.0595   0.01665   0.01189  -0.0316   0.7467   0.7426
  -0.500   0.0807   0.01686   0.01213  -0.0308   0.7448   0.7438
  -0.250   0.1017   0.01701   0.01230  -0.0300   0.7430   0.7450
   0.000   0.1236   0.01711   0.01241  -0.0294   0.7413   0.7463
   0.250   0.1471   0.01717   0.01247  -0.0291   0.7399   0.7475
   0.500   0.1718   0.01718   0.01249  -0.0290   0.7386   0.7488
   0.750   0.1973   0.01712   0.01242  -0.0290   0.7374   0.7501
   1.000   0.2242   0.01702   0.01231  -0.0293   0.7363   0.7514
   1.250   0.2540   0.01684   0.01210  -0.0301   0.7352   0.7526
   1.500   0.2851   0.01661   0.01185  -0.0312   0.7341   0.7534
   1.750   0.3165   0.01642   0.01164  -0.0323   0.7330   0.7543
   2.000   0.3390   0.01650   0.01172  -0.0319   0.7311   0.7552
   2.250   0.3264   0.01717   0.01246  -0.0255   0.7248   0.7571
   2.500   0.3505   0.01713   0.01242  -0.0253   0.7226   0.7578
   2.750   0.3822   0.01692   0.01221  -0.0264   0.7212   0.7582
   3.000   0.4156   0.01657   0.01187  -0.0277   0.7198   0.7589
   3.250   0.4538   0.01612   0.01142  -0.0299   0.7186   0.7595
   3.500   0.4944   0.01564   0.01094  -0.0324   0.7174   0.7600
   3.750   0.5329   0.01526   0.01057  -0.0346   0.7160   0.7605
   4.000   0.5718   0.01501   0.01032  -0.0369   0.7144   0.7611
   4.250   0.5726   0.01522   0.01063  -0.0323   0.7085   0.7621
   4.500   0.6048   0.01481   0.01025  -0.0332   0.7048   0.7628
   4.750   0.6503   0.01402   0.00944  -0.0364   0.7013   0.7633
   5.000   0.7028   0.01323   0.00860  -0.0409   0.6972   0.7637
   5.250   0.7117   0.01308   0.00854  -0.0374   0.6896   0.7650
   5.500   0.7544   0.01221   0.00760  -0.0400   0.6806   0.7657
   5.750   0.7625   0.01202   0.00750  -0.0363   0.6711   0.7669
   6.000   0.7908   0.01165   0.00711  -0.0364   0.6626   0.7678
   6.250   0.7883   0.01163   0.00718  -0.0307   0.6531   0.7692
   6.500   0.7920   0.01154   0.00712  -0.0262   0.6419   0.7706
   6.750   0.7904   0.01176   0.00736  -0.0211   0.6259   0.7721
   7.000   0.7891   0.01205   0.00758  -0.0161   0.5934   0.7737
   7.250   0.7770   0.01276   0.00797  -0.0095   0.5436   0.7752
   7.500   0.7617   0.01391   0.00887  -0.0029   0.5022   0.7766
   7.750   0.7459   0.01523   0.00997   0.0034   0.4610   0.7781
   8.000   0.7349   0.01649   0.01106   0.0086   0.4233   0.7799
   8.250   0.7239   0.01790   0.01228   0.0136   0.3820   0.7815
   8.500   0.7168   0.01929   0.01348   0.0178   0.3424   0.7831
   8.750   0.7119   0.02069   0.01468   0.0216   0.3007   0.7847
   9.000   0.7105   0.02200   0.01577   0.0248   0.2574   0.7864
   9.250   0.7094   0.02337   0.01690   0.0278   0.2124   0.7881
   9.500   0.7089   0.02476   0.01800   0.0306   0.1621   0.7901
   9.750   0.7093   0.02618   0.01913   0.0331   0.1140   0.7919
  10.000   0.7125   0.02751   0.02021   0.0353   0.0772   0.7936
  10.250   0.7203   0.02864   0.02120   0.0369   0.0560   0.7951
  10.500   0.7312   0.02965   0.02213   0.0381   0.0472   0.7965
  10.750   0.7439   0.03051   0.02299   0.0391   0.0427   0.7984
  11.000   0.7556   0.03145   0.02396   0.0403   0.0391   0.8003
  11.250   0.7685   0.03235   0.02489   0.0412   0.0367   0.8022
  11.500   0.7787   0.03346   0.02602   0.0424   0.0342   0.8041
  11.750   0.7917   0.03442   0.02702   0.0432   0.0323   0.8062
  12.000   0.8000   0.03571   0.02832   0.0444   0.0308   0.8083
  12.250   0.8121   0.03679   0.02945   0.0452   0.0300   0.8105
  12.500   0.8247   0.03784   0.03054   0.0459   0.0285   0.8128
  12.750   0.8360   0.03901   0.03173   0.0466   0.0277   0.8149
  13.000   0.8408   0.04066   0.03338   0.0478   0.0265   0.8171
  13.250   0.8523   0.04181   0.03463   0.0485   0.0258   0.8197
  13.500   0.8631   0.04305   0.03594   0.0492   0.0255   0.8223
  13.750   0.8741   0.04430   0.03725   0.0498   0.0250   0.8250
  14.000   0.8846   0.04564   0.03864   0.0504   0.0241   0.8278
  14.250   0.8943   0.04706   0.04009   0.0510   0.0235   0.8308
  14.500   0.9043   0.04850   0.04155   0.0514   0.0233   0.8335
  14.750   0.9128   0.05001   0.04309   0.0521   0.0229   0.8365
  15.000   0.9230   0.05140   0.04455   0.0526   0.0225   0.8396
  15.250   0.9338   0.05280   0.04606   0.0530   0.0222   0.8430
  15.500   0.9452   0.05417   0.04751   0.0533   0.0220   0.8467
  15.750   0.9566   0.05558   0.04899   0.0536   0.0216   0.8504
  16.000   0.9678   0.05702   0.05050   0.0538   0.0214   0.8542
  16.250   0.9784   0.05845   0.05204   0.0541   0.0212   0.8584
  16.500   0.9878   0.06004   0.05371   0.0544   0.0207   0.8628
  16.750   0.9989   0.06155   0.05529   0.0545   0.0206   0.8674
  17.000   1.0104   0.06301   0.05684   0.0546   0.0206   0.8719
  17.250   1.0192   0.06468   0.05861   0.0548   0.0203   0.8768
  17.500   1.0280   0.06640   0.06041   0.0548   0.0201   0.8824
  18.000   1.0475   0.06971   0.06386   0.0549   0.0197   0.8942
  18.250   1.0567   0.07146   0.06572   0.0550   0.0197   0.9012
  18.500   1.0726   0.07267   0.06698   0.0551   0.0193   0.9073
  18.750   1.0744   0.07523   0.06972   0.0551   0.0192   0.9160
  19.000   1.0661   0.07882   0.07354   0.0548   0.0190   0.9278
  19.250   1.0738   0.08120   0.07606   0.0542   0.0191   0.9399
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