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NACA 4421 (naca4421-il) Xfoil prediction polar at RE=500,000 Ncrit=5


Details Polar file
Airfoil: NACA 4421 (naca4421-il)
Reynolds number: 500,000
Max Cl/Cd: 78.11 at α=6°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca4421-il-500000-n5.txt
Download as CSV file: xf-naca4421-il-500000-n5.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: NACA 4421                                       
  
 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
  ------ -------- --------- --------- -------- -------- --------
 -19.000  -0.8741   0.08931   0.08468  -0.0868   1.0000   0.0449
 -18.750  -0.8866   0.08468   0.07998  -0.0887   1.0000   0.0453
 -18.500  -0.8990   0.08024   0.07546  -0.0904   1.0000   0.0457
 -18.250  -0.9175   0.07517   0.07033  -0.0922   1.0000   0.0461
 -18.000  -0.9381   0.06999   0.06508  -0.0941   1.0000   0.0464
 -17.750  -0.9603   0.06488   0.05988  -0.0956   1.0000   0.0467
 -17.500  -0.9828   0.06007   0.05499  -0.0967   1.0000   0.0470
 -17.250  -1.0059   0.05546   0.05029  -0.0974   1.0000   0.0474
 -17.000  -1.0268   0.05118   0.04592  -0.0979   0.9999   0.0477
 -16.750  -1.0285   0.04673   0.04136  -0.1017   0.9981   0.0483
 -16.500  -1.0259   0.04289   0.03742  -0.1051   0.9960   0.0490
 -16.250  -1.0187   0.03957   0.03399  -0.1083   0.9939   0.0497
 -16.000  -1.0078   0.03667   0.03098  -0.1115   0.9922   0.0504
 -15.750  -1.0016   0.03370   0.02794  -0.1140   0.9888   0.0511
 -15.500  -0.9907   0.03127   0.02544  -0.1163   0.9853   0.0519
 -15.250  -0.9752   0.02922   0.02333  -0.1186   0.9825   0.0529
 -15.000  -0.9567   0.02752   0.02155  -0.1206   0.9801   0.0539
 -14.750  -0.9403   0.02612   0.02008  -0.1216   0.9760   0.0549
 -14.500  -0.9260   0.02477   0.01868  -0.1220   0.9704   0.0559
 -14.250  -0.9088   0.02351   0.01738  -0.1227   0.9662   0.0571
 -14.000  -0.8935   0.02252   0.01634  -0.1224   0.9605   0.0584
 -13.750  -0.8783   0.02167   0.01544  -0.1217   0.9539   0.0598
 -13.500  -0.8597   0.02084   0.01455  -0.1214   0.9491   0.0613
 -13.250  -0.8479   0.02013   0.01382  -0.1197   0.9407   0.0629
 -13.000  -0.8308   0.01947   0.01312  -0.1186   0.9343   0.0648
 -12.750  -0.8151   0.01893   0.01253  -0.1171   0.9272   0.0666
 -12.500  -0.8002   0.01839   0.01196  -0.1153   0.9193   0.0687
 -12.250  -0.7826   0.01793   0.01146  -0.1139   0.9129   0.0710
 -12.000  -0.7645   0.01751   0.01101  -0.1125   0.9046   0.0734
 -11.750  -0.7434   0.01708   0.01055  -0.1116   0.8974   0.0762
 -11.500  -0.7224   0.01672   0.01016  -0.1106   0.8898   0.0792
 -11.250  -0.7007   0.01635   0.00976  -0.1097   0.8819   0.0824
 -11.000  -0.6771   0.01604   0.00940  -0.1090   0.8751   0.0857
 -10.750  -0.6549   0.01572   0.00907  -0.1082   0.8672   0.0888
 -10.500  -0.6307   0.01544   0.00874  -0.1076   0.8596   0.0919
 -10.250  -0.6068   0.01517   0.00843  -0.1070   0.8525   0.0945
 -10.000  -0.5829   0.01490   0.00814  -0.1063   0.8444   0.0974
  -9.500  -0.5333   0.01443   0.00758  -0.1052   0.8292   0.1029
  -9.250  -0.5086   0.01420   0.00731  -0.1047   0.8209   0.1058
  -9.000  -0.4831   0.01400   0.00707  -0.1042   0.8134   0.1085
  -8.750  -0.4578   0.01381   0.00683  -0.1037   0.8050   0.1110
  -8.500  -0.4329   0.01359   0.00657  -0.1032   0.7968   0.1138
  -8.250  -0.4073   0.01340   0.00636  -0.1027   0.7887   0.1167
  -8.000  -0.3814   0.01325   0.00615  -0.1023   0.7799   0.1192
  -7.750  -0.3561   0.01306   0.00593  -0.1018   0.7716   0.1219
  -7.500  -0.3305   0.01287   0.00573  -0.1013   0.7627   0.1249
  -7.250  -0.3047   0.01274   0.00554  -0.1009   0.7542   0.1279
  -7.000  -0.2784   0.01260   0.00536  -0.1005   0.7454   0.1306
  -6.750  -0.2532   0.01243   0.00517  -0.0999   0.7356   0.1340
  -6.500  -0.2272   0.01229   0.00501  -0.0995   0.7267   0.1375
  -6.250  -0.2011   0.01219   0.00485  -0.0991   0.7172   0.1410
  -6.000  -0.1756   0.01204   0.00469  -0.0985   0.7084   0.1459
  -5.750  -0.1497   0.01192   0.00455  -0.0981   0.6981   0.1515
  -5.500  -0.1243   0.01181   0.00441  -0.0975   0.6883   0.1568
  -5.250  -0.0984   0.01169   0.00428  -0.0971   0.6782   0.1625
  -5.000  -0.0728   0.01161   0.00416  -0.0965   0.6689   0.1679
  -4.750  -0.0467   0.01149   0.00405  -0.0961   0.6596   0.1747
  -4.500  -0.0212   0.01144   0.00396  -0.0956   0.6497   0.1817
  -4.250   0.0048   0.01134   0.00388  -0.0951   0.6401   0.1909
  -4.000   0.0302   0.01129   0.00381  -0.0945   0.6299   0.1999
  -3.750   0.0565   0.01124   0.00375  -0.0942   0.6212   0.2090
  -3.500   0.0824   0.01119   0.00371  -0.0937   0.6122   0.2176
  -3.250   0.1085   0.01118   0.00366  -0.0932   0.6042   0.2256
  -3.000   0.1348   0.01114   0.00362  -0.0928   0.5955   0.2330
  -2.500   0.1869   0.01113   0.00356  -0.0919   0.5787   0.2472
  -2.250   0.2126   0.01111   0.00354  -0.0914   0.5705   0.2542
  -2.000   0.2384   0.01112   0.00352  -0.0909   0.5637   0.2607
  -1.750   0.2652   0.01111   0.00350  -0.0906   0.5569   0.2664
  -1.500   0.2908   0.01110   0.00350  -0.0901   0.5497   0.2739
  -1.250   0.3163   0.01112   0.00350  -0.0895   0.5429   0.2818
  -1.000   0.3427   0.01110   0.00350  -0.0892   0.5363   0.2903
  -0.750   0.3683   0.01110   0.00351  -0.0887   0.5298   0.3004
  -0.250   0.4199   0.01111   0.00356  -0.0878   0.5185   0.3253
   0.000   0.4454   0.01109   0.00360  -0.0873   0.5122   0.3433
   0.250   0.4696   0.01110   0.00364  -0.0865   0.5054   0.3649
   0.500   0.4947   0.01109   0.00369  -0.0860   0.4989   0.3890
   0.750   0.5196   0.01108   0.00375  -0.0854   0.4917   0.4136
   1.000   0.5435   0.01110   0.00382  -0.0846   0.4853   0.4400
   1.250   0.5683   0.01109   0.00390  -0.0840   0.4803   0.4674
   1.500   0.5937   0.01108   0.00397  -0.0835   0.4750   0.4920
   1.750   0.6181   0.01110   0.00406  -0.0828   0.4695   0.5169
   2.000   0.6407   0.01114   0.00416  -0.0818   0.4641   0.5444
   2.250   0.6645   0.01115   0.00426  -0.0810   0.4596   0.5738
   2.500   0.6885   0.01116   0.00437  -0.0802   0.4548   0.6032
   2.750   0.7113   0.01121   0.00449  -0.0792   0.4495   0.6319
   3.000   0.7334   0.01131   0.00464  -0.0781   0.4443   0.6587
   3.250   0.7578   0.01137   0.00478  -0.0774   0.4400   0.6857
   3.500   0.7824   0.01143   0.00494  -0.0768   0.4353   0.7130
   3.750   0.8058   0.01153   0.00512  -0.0759   0.4300   0.7401
   4.000   0.8280   0.01167   0.00531  -0.0749   0.4248   0.7670
   4.250   0.8516   0.01176   0.00550  -0.0740   0.4205   0.7964
   4.500   0.8747   0.01185   0.00571  -0.0731   0.4157   0.8297
   4.750   0.8951   0.01197   0.00594  -0.0715   0.4104   0.8698
   5.000   0.9138   0.01217   0.00620  -0.0696   0.4052   0.9136
   5.250   0.9409   0.01235   0.00644  -0.0694   0.4005   0.9533
   5.500   0.9745   0.01258   0.00667  -0.0708   0.3947   0.9824
   5.750   1.0032   0.01285   0.00690  -0.0714   0.3880   1.0000
   6.000   1.0225   0.01309   0.00712  -0.0700   0.3817   1.0000
   6.250   1.0418   0.01336   0.00736  -0.0687   0.3735   1.0000
   6.500   1.0596   0.01371   0.00766  -0.0671   0.3651   1.0000
   6.750   1.0787   0.01404   0.00795  -0.0659   0.3552   1.0000
   7.000   1.0964   0.01444   0.00831  -0.0644   0.3463   1.0000
   7.250   1.1156   0.01482   0.00866  -0.0632   0.3372   1.0000
   7.500   1.1334   0.01526   0.00906  -0.0619   0.3297   1.0000
   7.750   1.1525   0.01568   0.00946  -0.0607   0.3212   1.0000
   8.000   1.1694   0.01620   0.00994  -0.0593   0.3133   1.0000
   8.250   1.1879   0.01667   0.01040  -0.0582   0.3052   1.0000
   8.500   1.2036   0.01728   0.01097  -0.0568   0.2969   1.0000
   8.750   1.2211   0.01784   0.01150  -0.0556   0.2888   1.0000
   9.000   1.2354   0.01855   0.01218  -0.0541   0.2809   1.0000
   9.250   1.2530   0.01913   0.01276  -0.0530   0.2742   1.0000
   9.500   1.2674   0.01989   0.01350  -0.0516   0.2671   1.0000
   9.750   1.2832   0.02060   0.01420  -0.0505   0.2608   1.0000
  10.000   1.2976   0.02140   0.01499  -0.0492   0.2538   1.0000
  10.250   1.3107   0.02229   0.01586  -0.0478   0.2474   1.0000
  10.500   1.3257   0.02310   0.01668  -0.0467   0.2410   1.0000
  10.750   1.3378   0.02410   0.01767  -0.0454   0.2346   1.0000
  11.000   1.3515   0.02504   0.01861  -0.0443   0.2289   1.0000
  11.250   1.3639   0.02608   0.01965  -0.0431   0.2222   1.0000
  11.500   1.3741   0.02729   0.02086  -0.0418   0.2157   1.0000
  11.750   1.3849   0.02850   0.02206  -0.0406   0.2077   1.0000
  12.000   1.3931   0.02994   0.02349  -0.0394   0.2002   1.0000
  12.250   1.4010   0.03144   0.02498  -0.0382   0.1918   1.0000
  12.500   1.4085   0.03301   0.02655  -0.0370   0.1841   1.0000
  12.750   1.4126   0.03490   0.02841  -0.0358   0.1760   1.0000
  13.000   1.4189   0.03666   0.03017  -0.0347   0.1679   1.0000
  13.250   1.4226   0.03869   0.03219  -0.0337   0.1603   1.0000
  13.500   1.4246   0.04092   0.03442  -0.0326   0.1528   1.0000
  13.750   1.4280   0.04308   0.03658  -0.0318   0.1462   1.0000
  14.000   1.4283   0.04556   0.03906  -0.0309   0.1398   1.0000
  14.250   1.4305   0.04794   0.04146  -0.0302   0.1338   1.0000
  14.500   1.4299   0.05063   0.04416  -0.0295   0.1289   1.0000
  14.750   1.4334   0.05294   0.04650  -0.0290   0.1248   1.0000
  15.000   1.4342   0.05557   0.04916  -0.0285   0.1213   1.0000
  15.250   1.4347   0.05829   0.05191  -0.0281   0.1184   1.0000
  15.500   1.4384   0.06068   0.05436  -0.0279   0.1158   1.0000
  15.750   1.4390   0.06345   0.05717  -0.0276   0.1131   1.0000
  16.000   1.4384   0.06636   0.06011  -0.0274   0.1106   1.0000
  16.250   1.4390   0.06916   0.06296  -0.0273   0.1085   1.0000
  16.500   1.4408   0.07187   0.06573  -0.0272   0.1063   1.0000
  16.750   1.4413   0.07474   0.06865  -0.0272   0.1040   1.0000
  17.000   1.4392   0.07795   0.07190  -0.0273   0.1018   1.0000
  17.250   1.4385   0.08098   0.07497  -0.0274   0.0999   1.0000
  17.500   1.4396   0.08384   0.07790  -0.0276   0.0980   1.0000
  17.750   1.4405   0.08673   0.08084  -0.0279   0.0959   1.0000
  18.000   1.4385   0.09003   0.08419  -0.0282   0.0940   1.0000
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