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NACA 66(4)-221 (naca664221-il) Xfoil prediction polar at RE=200,000 Ncrit=5


Details Polar file
Airfoil: NACA 66(4)-221 (naca664221-il)
Reynolds number: 200,000
Max Cl/Cd: 30.51 at α=8°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca664221-il-200000-n5.txt
Download as CSV file: xf-naca664221-il-200000-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 =     0.200 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.250  -0.6573   0.10936   0.10453  -0.0927   0.9339   0.0243
 -19.000  -0.6943   0.09853   0.09334  -0.0995   0.9283   0.0242
 -18.750  -0.7082   0.09238   0.08699  -0.1031   0.9208   0.0243
 -18.250  -0.7402   0.08067   0.07477  -0.1089   0.9075   0.0243
 -18.000  -0.7460   0.07670   0.07062  -0.1105   0.9010   0.0244
 -17.750  -0.7503   0.07310   0.06686  -0.1117   0.8952   0.0245
 -17.500  -0.7537   0.06980   0.06341  -0.1126   0.8893   0.0247
 -17.250  -0.7569   0.06660   0.06001  -0.1132   0.8838   0.0247
 -17.000  -0.7569   0.06387   0.05712  -0.1137   0.8790   0.0249
 -16.750  -0.7562   0.06134   0.05445  -0.1139   0.8739   0.0251
 -16.500  -0.7544   0.05893   0.05188  -0.1139   0.8690   0.0253
 -16.250  -0.7509   0.05675   0.04954  -0.1138   0.8647   0.0255
 -16.000  -0.7465   0.05473   0.04735  -0.1136   0.8610   0.0257
 -15.750  -0.7402   0.05286   0.04533  -0.1133   0.8569   0.0260
 -15.500  -0.7332   0.05110   0.04343  -0.1130   0.8530   0.0264
 -15.250  -0.7248   0.04946   0.04163  -0.1126   0.8493   0.0268
 -15.000  -0.7151   0.04796   0.03996  -0.1122   0.8460   0.0272
 -14.750  -0.7044   0.04655   0.03836  -0.1117   0.8432   0.0276
 -14.500  -0.6928   0.04523   0.03687  -0.1113   0.8400   0.0280
 -14.250  -0.6767   0.04416   0.03582  -0.1111   0.8368   0.0285
 -14.000  -0.6621   0.04311   0.03473  -0.1108   0.8337   0.0289
 -13.750  -0.6472   0.04210   0.03367  -0.1104   0.8309   0.0293
 -13.500  -0.6330   0.04109   0.03259  -0.1099   0.8282   0.0299
 -13.250  -0.6184   0.04013   0.03154  -0.1094   0.8258   0.0304
 -13.000  -0.6034   0.03920   0.03052  -0.1089   0.8236   0.0310
 -12.750  -0.5886   0.03828   0.02954  -0.1084   0.8211   0.0316
 -12.500  -0.5738   0.03739   0.02856  -0.1078   0.8184   0.0322
 -12.250  -0.5608   0.03642   0.02758  -0.1071   0.8159   0.0329
 -12.000  -0.5477   0.03550   0.02665  -0.1063   0.8135   0.0336
 -11.750  -0.5349   0.03459   0.02570  -0.1055   0.8111   0.0344
 -11.500  -0.5213   0.03376   0.02480  -0.1047   0.8090   0.0356
 -11.250  -0.5079   0.03293   0.02388  -0.1039   0.8069   0.0368
 -11.000  -0.4957   0.03205   0.02296  -0.1029   0.8050   0.0379
 -10.750  -0.4835   0.03120   0.02211  -0.1019   0.8028   0.0394
 -10.500  -0.4702   0.03043   0.02131  -0.1010   0.8007   0.0408
 -10.250  -0.4568   0.02969   0.02052  -0.1000   0.7986   0.0422
 -10.000  -0.4443   0.02890   0.01973  -0.0989   0.7966   0.0440
  -9.750  -0.4309   0.02820   0.01899  -0.0979   0.7946   0.0463
  -9.500  -0.4166   0.02755   0.01829  -0.0969   0.7929   0.0490
  -9.250  -0.4034   0.02685   0.01760  -0.0957   0.7912   0.0525
  -9.000  -0.3897   0.02620   0.01694  -0.0945   0.7897   0.0576
  -8.750  -0.3763   0.02555   0.01630  -0.0933   0.7883   0.0654
  -8.500  -0.3638   0.02488   0.01567  -0.0920   0.7870   0.0776
  -8.250  -0.3538   0.02413   0.01507  -0.0903   0.7855   0.0992
  -8.000  -0.3471   0.02329   0.01446  -0.0882   0.7837   0.1366
  -7.750  -0.3438   0.02235   0.01381  -0.0857   0.7819   0.1866
  -7.500  -0.3418   0.02143   0.01316  -0.0829   0.7800   0.2354
  -7.250  -0.3434   0.02046   0.01246  -0.0794   0.7781   0.2879
  -7.000  -0.3458   0.01953   0.01179  -0.0757   0.7762   0.3379
  -6.750  -0.3517   0.01858   0.01111  -0.0712   0.7742   0.3911
  -6.500  -0.3560   0.01775   0.01060  -0.0666   0.7723   0.4493
  -6.250  -0.3346   0.01799   0.01132  -0.0649   0.7712   0.5264
  -6.000  -0.2363   0.02228   0.01592  -0.0721   0.7715   0.5968
  -5.750  -0.2361   0.02181   0.01542  -0.0683   0.7701   0.6232
  -5.500  -0.2277   0.02182   0.01537  -0.0654   0.7690   0.6407
  -5.250  -0.2226   0.02163   0.01512  -0.0621   0.7677   0.6544
  -5.000  -0.2184   0.02158   0.01507  -0.0586   0.7659   0.6654
  -4.750  -0.1984   0.02194   0.01540  -0.0573   0.7645   0.6708
  -4.500  -0.2430   0.02122   0.01470  -0.0459   0.7612   0.6861
  -4.250  -0.1994   0.02196   0.01539  -0.0484   0.7605   0.6873
  -4.000  -0.1580   0.02261   0.01598  -0.0505   0.7597   0.6883
  -3.500  -0.1598   0.02243   0.01574  -0.0414   0.7560   0.7040
  -3.250  -0.1223   0.02290   0.01616  -0.0430   0.7551   0.7051
  -3.000  -0.0891   0.02323   0.01645  -0.0439   0.7542   0.7062
  -2.750  -0.0598   0.02347   0.01665  -0.0444   0.7534   0.7075
  -2.250  -0.0663   0.02250   0.01556  -0.0350   0.7508   0.7218
  -2.000  -0.0361   0.02270   0.01574  -0.0357   0.7502   0.7227
  -1.750  -0.0147   0.02314   0.01619  -0.0347   0.7488   0.7240
  -1.500  -0.0234   0.02411   0.01725  -0.0286   0.7438   0.7267
  -1.250  -0.0250   0.02461   0.01777  -0.0239   0.7405   0.7301
  -0.750  -0.0288   0.02381   0.01685  -0.0152   0.7355   0.7405
  -0.500  -0.0026   0.02383   0.01686  -0.0152   0.7345   0.7414
  -0.250   0.0250   0.02380   0.01681  -0.0154   0.7336   0.7424
   0.000   0.0525   0.02377   0.01677  -0.0157   0.7329   0.7435
   0.250   0.0800   0.02371   0.01670  -0.0160   0.7322   0.7446
   1.250   0.0105   0.02633   0.01931   0.0108   0.7032   0.7567
   1.500   0.0373   0.02613   0.01907   0.0104   0.7016   0.7579
   1.750   0.0665   0.02593   0.01886   0.0097   0.7003   0.7588
   2.000   0.0966   0.02576   0.01869   0.0090   0.6992   0.7594
   2.250   0.1278   0.02556   0.01850   0.0082   0.6983   0.7600
   2.500   0.1601   0.02532   0.01828   0.0072   0.6976   0.7606
   2.750   0.1924   0.02508   0.01806   0.0062   0.6970   0.7612
   3.250   0.1985   0.02642   0.01946   0.0126   0.6822   0.7638
   3.500   0.2306   0.02618   0.01924   0.0117   0.6812   0.7648
   3.750   0.2638   0.02587   0.01896   0.0107   0.6804   0.7659
   4.250   0.2825   0.02675   0.01990   0.0150   0.6659   0.7686
   4.500   0.3158   0.02636   0.01955   0.0140   0.6647   0.7696
   4.750   0.3505   0.02589   0.01912   0.0128   0.6637   0.7706
   5.750   0.4085   0.02690   0.02027   0.0184   0.6345   0.7762
   6.000   0.4418   0.02634   0.01976   0.0175   0.6323   0.7773
   6.500   0.4765   0.02650   0.02006   0.0199   0.6164   0.7794
   7.500   0.5486   0.02669   0.02052   0.0243   0.5708   0.7847
   7.750   0.6127   0.02362   0.01729   0.0212   0.5330   0.7857
   8.000   0.6637   0.02175   0.01497   0.0193   0.4670   0.7867
   8.250   0.6722   0.02235   0.01532   0.0217   0.4226   0.7885
   8.500   0.6740   0.02333   0.01608   0.0247   0.3807   0.7903
   8.750   0.6734   0.02453   0.01704   0.0278   0.3404   0.7923
   9.000   0.6734   0.02579   0.01809   0.0305   0.2997   0.7942
   9.250   0.6738   0.02713   0.01920   0.0331   0.2585   0.7961
   9.750   0.6769   0.02984   0.02149   0.0378   0.1769   0.7993
  10.000   0.6800   0.03121   0.02264   0.0398   0.1370   0.8009
  10.250   0.6844   0.03257   0.02380   0.0416   0.1013   0.8027
  10.500   0.6913   0.03384   0.02492   0.0430   0.0780   0.8046
  10.750   0.7010   0.03497   0.02599   0.0442   0.0633   0.8066
  11.000   0.7116   0.03608   0.02706   0.0452   0.0540   0.8087
  11.250   0.7229   0.03717   0.02815   0.0460   0.0481   0.8108
  11.500   0.7344   0.03829   0.02928   0.0468   0.0434   0.8131
  11.750   0.7456   0.03947   0.03046   0.0476   0.0407   0.8153
  12.000   0.7569   0.04059   0.03165   0.0484   0.0380   0.8173
  12.250   0.7673   0.04180   0.03293   0.0492   0.0364   0.8193
  12.500   0.7766   0.04313   0.03431   0.0501   0.0345   0.8216
  12.750   0.7870   0.04440   0.03567   0.0508   0.0331   0.8243
  13.000   0.7964   0.04580   0.03713   0.0514   0.0315   0.8270
  13.250   0.8046   0.04734   0.03870   0.0521   0.0304   0.8300
  13.500   0.8142   0.04881   0.04025   0.0526   0.0297   0.8330
  13.750   0.8235   0.05028   0.04181   0.0531   0.0290   0.8356
  14.000   0.8315   0.05184   0.04345   0.0538   0.0279   0.8382
  14.250   0.8394   0.05346   0.04513   0.0543   0.0272   0.8410
  14.500   0.8469   0.05515   0.04688   0.0548   0.0267   0.8441
  14.750   0.8556   0.05682   0.04860   0.0551   0.0262   0.8474
  15.000   0.8652   0.05847   0.05035   0.0553   0.0255   0.8508
  15.250   0.8747   0.06012   0.05210   0.0555   0.0250   0.8540
  15.500   0.8837   0.06178   0.05385   0.0558   0.0245   0.8572
  15.750   0.8923   0.06352   0.05568   0.0559   0.0240   0.8608
  16.000   0.9013   0.06529   0.05752   0.0559   0.0235   0.8648
  16.250   0.9102   0.06713   0.05940   0.0558   0.0231   0.8689
  16.500   0.9183   0.06902   0.06133   0.0557   0.0226   0.8728
  16.750   0.9269   0.07091   0.06338   0.0557   0.0223   0.8771
  17.000   0.9356   0.07281   0.06540   0.0556   0.0221   0.8820
  17.250   0.9423   0.07502   0.06776   0.0553   0.0216   0.8871
  17.500   0.9487   0.07722   0.07010   0.0551   0.0213   0.8923
  17.750   0.9541   0.07956   0.07258   0.0548   0.0210   0.8984
  18.250   0.9635   0.08456   0.07788   0.0538   0.0205   0.9128
  18.500   0.9667   0.08735   0.08081   0.0531   0.0203   0.9218
  18.750   0.9697   0.09032   0.08393   0.0520   0.0201   0.9324
  19.000   0.9733   0.09354   0.08730   0.0503   0.0199   0.9446
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