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NACA 66(4)-221 (naca664221-il) Xfoil prediction polar at RE=1,000,000 Ncrit=9


Details Polar file
Airfoil: NACA 66(4)-221 (naca664221-il)
Reynolds number: 1,000,000
Max Cl/Cd: 100.81 at α=5.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca664221-il-1000000.txt
Download as CSV file: xf-naca664221-il-1000000.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 =     1.000 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.750  -0.9012   0.07101   0.06666  -0.1106   0.8986   0.0173
 -19.500  -0.9028   0.06802   0.06352  -0.1113   0.8892   0.0173
 -19.250  -0.9047   0.06516   0.06050  -0.1116   0.8807   0.0174
 -19.000  -0.9055   0.06242   0.05764  -0.1118   0.8742   0.0176
 -18.750  -0.9038   0.06006   0.05518  -0.1119   0.8673   0.0178
 -18.500  -0.9004   0.05788   0.05290  -0.1121   0.8607   0.0179
 -18.250  -0.8952   0.05585   0.05078  -0.1122   0.8554   0.0178
 -18.000  -0.8908   0.05384   0.04869  -0.1122   0.8497   0.0180
 -17.750  -0.8849   0.05202   0.04679  -0.1122   0.8440   0.0181
 -17.500  -0.8788   0.05019   0.04489  -0.1122   0.8398   0.0183
 -17.250  -0.8718   0.04848   0.04311  -0.1120   0.8353   0.0183
 -17.000  -0.8638   0.04692   0.04148  -0.1119   0.8306   0.0186
 -16.750  -0.8558   0.04542   0.03990  -0.1116   0.8259   0.0187
 -16.500  -0.8472   0.04395   0.03836  -0.1113   0.8222   0.0189
 -16.250  -0.8375   0.04257   0.03692  -0.1110   0.8187   0.0190
 -16.000  -0.8280   0.04123   0.03552  -0.1106   0.8150   0.0192
 -15.750  -0.8177   0.03999   0.03420  -0.1101   0.8111   0.0194
 -15.500  -0.8077   0.03879   0.03291  -0.1095   0.8070   0.0196
 -15.250  -0.7971   0.03759   0.03166  -0.1090   0.8038   0.0198
 -15.000  -0.7859   0.03646   0.03047  -0.1085   0.8011   0.0199
 -14.750  -0.7746   0.03535   0.02931  -0.1078   0.7981   0.0200
 -14.500  -0.7623   0.03434   0.02824  -0.1072   0.7950   0.0202
 -14.250  -0.7500   0.03337   0.02720  -0.1066   0.7920   0.0204
 -14.000  -0.7364   0.03252   0.02628  -0.1060   0.7887   0.0205
 -13.750  -0.7237   0.03160   0.02531  -0.1053   0.7859   0.0206
 -13.500  -0.7202   0.03010   0.02377  -0.1037   0.7840   0.0211
 -13.250  -0.7091   0.02911   0.02276  -0.1028   0.7818   0.0214
 -13.000  -0.6963   0.02824   0.02186  -0.1020   0.7796   0.0215
 -12.750  -0.6816   0.02750   0.02110  -0.1013   0.7773   0.0220
 -12.500  -0.6677   0.02675   0.02031  -0.1004   0.7749   0.0223
 -12.250  -0.6539   0.02600   0.01951  -0.0995   0.7726   0.0228
 -12.000  -0.6386   0.02536   0.01882  -0.0988   0.7700   0.0232
 -11.750  -0.6239   0.02468   0.01809  -0.0979   0.7676   0.0235
 -11.500  -0.6071   0.02410   0.01748  -0.0973   0.7664   0.0239
 -11.250  -0.5945   0.02331   0.01667  -0.0961   0.7649   0.0244
 -11.000  -0.5813   0.02258   0.01592  -0.0950   0.7632   0.0251
 -10.750  -0.5651   0.02201   0.01535  -0.0941   0.7616   0.0260
 -10.500  -0.5487   0.02146   0.01478  -0.0933   0.7599   0.0267
 -10.250  -0.5320   0.02094   0.01423  -0.0925   0.7583   0.0274
 -10.000  -0.5134   0.02052   0.01378  -0.0918   0.7568   0.0280
  -9.750  -0.5005   0.01985   0.01309  -0.0904   0.7551   0.0293
  -9.500  -0.4835   0.01938   0.01261  -0.0896   0.7534   0.0305
  -9.250  -0.4664   0.01894   0.01214  -0.0887   0.7515   0.0315
  -9.000  -0.4495   0.01851   0.01168  -0.0877   0.7497   0.0330
  -8.750  -0.4333   0.01801   0.01121  -0.0867   0.7489   0.0351
  -8.500  -0.4152   0.01761   0.01080  -0.0858   0.7480   0.0369
  -8.250  -0.3990   0.01714   0.01035  -0.0847   0.7470   0.0397
  -8.000  -0.3819   0.01672   0.00994  -0.0836   0.7458   0.0431
  -7.750  -0.3664   0.01625   0.00951  -0.0824   0.7446   0.0499
  -7.500  -0.3527   0.01571   0.00907  -0.0808   0.7433   0.0642
  -7.250  -0.3431   0.01505   0.00854  -0.0787   0.7420   0.0905
  -7.000  -0.3388   0.01423   0.00794  -0.0757   0.7408   0.1333
  -6.750  -0.3359   0.01340   0.00733  -0.0725   0.7396   0.1794
  -6.500  -0.3348   0.01256   0.00670  -0.0689   0.7384   0.2270
  -6.250  -0.3367   0.01167   0.00604  -0.0647   0.7371   0.2758
  -6.000  -0.3402   0.01081   0.00537  -0.0601   0.7357   0.3228
  -5.750  -0.3504   0.00987   0.00464  -0.0542   0.7342   0.3749
  -5.500  -0.3588   0.00919   0.00411  -0.0482   0.7324   0.4142
  -5.250  -0.3743   0.00872   0.00380  -0.0403   0.7313   0.4558
  -5.000  -0.3819   0.00799   0.00338  -0.0341   0.7306   0.5250
  -4.750  -0.3793   0.00739   0.00318  -0.0296   0.7298   0.6167
  -4.500  -0.3539   0.00740   0.00323  -0.0294   0.7292   0.6432
  -4.250  -0.3263   0.00743   0.00325  -0.0297   0.7286   0.6546
  -4.000  -0.2983   0.00750   0.00330  -0.0300   0.7279   0.6641
  -3.750  -0.2704   0.00761   0.00342  -0.0302   0.7273   0.6740
  -3.500  -0.2418   0.00776   0.00356  -0.0305   0.7266   0.6817
  -3.250  -0.2133   0.00788   0.00366  -0.0309   0.7260   0.6883
  -3.000  -0.1834   0.00803   0.00384  -0.0315   0.7253   0.6932
  -2.750  -0.1537   0.00819   0.00400  -0.0320   0.7246   0.6978
  -2.500  -0.1247   0.00835   0.00413  -0.0325   0.7238   0.7018
  -2.250  -0.0959   0.00838   0.00413  -0.0330   0.7231   0.7046
  -2.000  -0.0660   0.00842   0.00420  -0.0337   0.7225   0.7077
  -1.750  -0.0359   0.00851   0.00430  -0.0344   0.7219   0.7098
  -1.500  -0.0064   0.00854   0.00432  -0.0350   0.7213   0.7111
  -1.250   0.0232   0.00858   0.00436  -0.0357   0.7207   0.7124
  -1.000   0.0527   0.00865   0.00442  -0.0363   0.7201   0.7143
  -0.750   0.0822   0.00873   0.00449  -0.0370   0.7196   0.7164
  -0.500   0.1115   0.00879   0.00454  -0.0376   0.7190   0.7180
  -0.250   0.1408   0.00881   0.00455  -0.0383   0.7184   0.7188
   0.000   0.1701   0.00882   0.00454  -0.0390   0.7178   0.7193
   0.250   0.1995   0.00884   0.00455  -0.0397   0.7170   0.7198
   0.500   0.2287   0.00889   0.00459  -0.0404   0.7161   0.7203
   0.750   0.2574   0.00903   0.00472  -0.0410   0.7146   0.7207
   1.000   0.2859   0.00902   0.00472  -0.0415   0.7135   0.7211
   1.250   0.3142   0.00890   0.00462  -0.0419   0.7121   0.7216
   1.500   0.3423   0.00877   0.00450  -0.0424   0.7104   0.7225
   1.750   0.3709   0.00870   0.00445  -0.0429   0.7089   0.7233
   2.000   0.3997   0.00867   0.00443  -0.0434   0.7075   0.7240
   2.250   0.4288   0.00861   0.00439  -0.0440   0.7058   0.7246
   2.500   0.4587   0.00853   0.00431  -0.0447   0.7037   0.7253
   2.750   0.4892   0.00843   0.00421  -0.0456   0.7014   0.7259
   3.000   0.5194   0.00841   0.00418  -0.0463   0.6992   0.7265
   3.250   0.5487   0.00849   0.00427  -0.0470   0.6966   0.7271
   3.500   0.5751   0.00836   0.00420  -0.0470   0.6939   0.7278
   3.750   0.6025   0.00824   0.00410  -0.0471   0.6900   0.7285
   4.000   0.6314   0.00810   0.00397  -0.0476   0.6856   0.7293
   4.250   0.6611   0.00803   0.00388  -0.0482   0.6808   0.7301
   4.500   0.6850   0.00793   0.00383  -0.0476   0.6752   0.7309
   4.750   0.7098   0.00781   0.00373  -0.0472   0.6678   0.7316
   5.000   0.7331   0.00773   0.00366  -0.0465   0.6585   0.7324
   5.250   0.7549   0.00769   0.00361  -0.0455   0.6475   0.7332
   5.500   0.7742   0.00768   0.00362  -0.0440   0.6319   0.7341
   5.750   0.7762   0.00780   0.00362  -0.0390   0.5921   0.7351
   6.000   0.7522   0.00836   0.00398  -0.0290   0.5527   0.7364
   6.250   0.7308   0.00933   0.00475  -0.0203   0.5110   0.7376
   6.500   0.7159   0.01037   0.00562  -0.0133   0.4738   0.7386
   6.750   0.7007   0.01160   0.00667  -0.0066   0.4334   0.7394
   7.000   0.6922   0.01272   0.00763  -0.0013   0.3971   0.7411
   7.250   0.6852   0.01388   0.00864   0.0036   0.3595   0.7429
   7.500   0.6828   0.01496   0.00956   0.0076   0.3238   0.7444
   7.750   0.6800   0.01611   0.01053   0.0115   0.2838   0.7459
   8.000   0.6818   0.01715   0.01141   0.0147   0.2489   0.7472
   8.250   0.6838   0.01822   0.01228   0.0177   0.2090   0.7485
   8.500   0.6878   0.01926   0.01315   0.0204   0.1739   0.7499
   8.750   0.6919   0.02032   0.01402   0.0229   0.1370   0.7512
   9.000   0.6972   0.02138   0.01488   0.0253   0.1015   0.7526
   9.250   0.7039   0.02241   0.01576   0.0273   0.0741   0.7540
   9.500   0.7135   0.02333   0.01655   0.0290   0.0533   0.7554
   9.750   0.7265   0.02412   0.01726   0.0302   0.0421   0.7566
  10.000   0.7413   0.02483   0.01794   0.0312   0.0369   0.7577
  10.250   0.7561   0.02555   0.01865   0.0322   0.0334   0.7589
  10.500   0.7704   0.02628   0.01938   0.0332   0.0306   0.7612
  10.750   0.7872   0.02688   0.02002   0.0338   0.0289   0.7632
  11.000   0.8009   0.02768   0.02082   0.0349   0.0266   0.7651
  11.250   0.8169   0.02838   0.02155   0.0356   0.0255   0.7669
  11.500   0.8314   0.02917   0.02237   0.0364   0.0238   0.7687
  11.750   0.8449   0.03005   0.02326   0.0373   0.0224   0.7705
  12.000   0.8612   0.03077   0.02401   0.0379   0.0214   0.7724
  12.250   0.8761   0.03159   0.02485   0.0385   0.0209   0.7742
  12.500   0.8892   0.03253   0.02581   0.0393   0.0200   0.7758
  12.750   0.9008   0.03361   0.02690   0.0402   0.0195   0.7773
  13.000   0.9145   0.03453   0.02787   0.0409   0.0188   0.7801
  13.250   0.9284   0.03543   0.02883   0.0416   0.0182   0.7829
  13.500   0.9410   0.03646   0.02992   0.0423   0.0181   0.7854
  13.750   0.9534   0.03752   0.03103   0.0430   0.0178   0.7880
  14.000   0.9663   0.03857   0.03210   0.0435   0.0171   0.7906
  14.250   0.9762   0.03987   0.03343   0.0443   0.0166   0.7930
  14.500   0.9853   0.04127   0.03488   0.0450   0.0166   0.7953
  14.750   0.9901   0.04303   0.03669   0.0460   0.0162   0.7975
  15.000   0.9998   0.04440   0.03814   0.0466   0.0161   0.8012
  15.250   1.0124   0.04556   0.03937   0.0470   0.0158   0.8046
  15.500   1.0213   0.04706   0.04094   0.0475   0.0157   0.8078
  15.750   1.0299   0.04863   0.04257   0.0480   0.0155   0.8111
  16.000   1.0384   0.05026   0.04426   0.0484   0.0154   0.8141
  16.250   1.0459   0.05200   0.04606   0.0487   0.0153   0.8171
  16.500   1.0553   0.05356   0.04769   0.0490   0.0149   0.8213
  16.750   1.0618   0.05542   0.04964   0.0493   0.0148   0.8252
  17.000   1.0662   0.05753   0.05183   0.0495   0.0149   0.8292
  17.250   1.0733   0.05946   0.05382   0.0496   0.0147   0.8330
  17.500   1.0799   0.06147   0.05590   0.0496   0.0145   0.8371
  17.750   1.0862   0.06349   0.05800   0.0495   0.0144   0.8421
  18.000   1.0897   0.06587   0.06046   0.0495   0.0142   0.8471
  18.250   1.0933   0.06831   0.06297   0.0492   0.0142   0.8515
  18.500   1.0975   0.07066   0.06541   0.0490   0.0141   0.8571
  18.750   1.0996   0.07330   0.06813   0.0487   0.0139   0.8629
  19.000   1.0976   0.07643   0.07134   0.0483   0.0136   0.8684
  19.250   1.1029   0.07880   0.07381   0.0478   0.0138   0.8753
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