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NACA 4421 (naca4421-il) Xfoil prediction polar at RE=1,000,000 Ncrit=9


Details Polar file
Airfoil: NACA 4421 (naca4421-il)
Reynolds number: 1,000,000
Max Cl/Cd: 103.06 at α=5.75°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca4421-il-1000000.txt
Download as CSV file: xf-naca4421-il-1000000.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 =     1.000 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -19.750  -0.9805   0.08344   0.07962  -0.0909   1.0000   0.0436
 -19.500  -0.9971   0.07828   0.07438  -0.0932   1.0000   0.0439
 -19.250  -1.0148   0.07317   0.06918  -0.0954   1.0000   0.0443
 -19.000  -1.0341   0.06805   0.06398  -0.0973   1.0000   0.0446
 -18.750  -1.0541   0.06308   0.05892  -0.0990   1.0000   0.0449
 -18.500  -1.0749   0.05829   0.05403  -0.1003   1.0000   0.0451
 -18.250  -1.0967   0.05368   0.04932  -0.1013   1.0000   0.0453
 -18.000  -1.1167   0.04961   0.04515  -0.1015   1.0000   0.0455
 -17.500  -1.1664   0.04160   0.03695  -0.1005   1.0000   0.0459
 -17.250  -1.1777   0.03744   0.03270  -0.1025   0.9992   0.0464
 -17.000  -1.1718   0.03398   0.02916  -0.1059   0.9976   0.0470
 -16.750  -1.1600   0.03131   0.02642  -0.1088   0.9958   0.0477
 -16.500  -1.1439   0.02916   0.02421  -0.1113   0.9943   0.0484
 -16.250  -1.1242   0.02741   0.02239  -0.1137   0.9930   0.0492
 -16.000  -1.1017   0.02595   0.02087  -0.1159   0.9920   0.0499
 -15.750  -1.0848   0.02453   0.01939  -0.1169   0.9889   0.0506
 -15.500  -1.0687   0.02290   0.01772  -0.1183   0.9858   0.0517
 -15.250  -1.0464   0.02168   0.01648  -0.1198   0.9837   0.0527
 -15.000  -1.0206   0.02070   0.01546  -0.1213   0.9821   0.0539
 -14.750  -0.9936   0.01993   0.01463  -0.1227   0.9803   0.0550
 -14.500  -0.9753   0.01904   0.01371  -0.1225   0.9761   0.0563
 -14.250  -0.9592   0.01823   0.01289  -0.1217   0.9704   0.0576
 -14.000  -0.9396   0.01757   0.01220  -0.1211   0.9659   0.0590
 -13.750  -0.9234   0.01708   0.01166  -0.1195   0.9596   0.0603
 -13.500  -0.9093   0.01649   0.01105  -0.1176   0.9528   0.0618
 -13.250  -0.8947   0.01598   0.01052  -0.1156   0.9466   0.0635
 -13.000  -0.8789   0.01559   0.01009  -0.1137   0.9393   0.0652
 -12.750  -0.8589   0.01516   0.00962  -0.1125   0.9333   0.0672
 -12.500  -0.8398   0.01473   0.00919  -0.1112   0.9265   0.0697
 -12.250  -0.8181   0.01439   0.00882  -0.1102   0.9199   0.0722
 -12.000  -0.7963   0.01399   0.00841  -0.1093   0.9137   0.0756
 -11.500  -0.7505   0.01336   0.00778  -0.1077   0.9005   0.0828
 -11.250  -0.7255   0.01312   0.00750  -0.1071   0.8944   0.0862
 -11.000  -0.7016   0.01283   0.00724  -0.1065   0.8874   0.0899
 -10.750  -0.6757   0.01265   0.00700  -0.1061   0.8807   0.0929
 -10.500  -0.6509   0.01239   0.00674  -0.1056   0.8740   0.0961
 -10.250  -0.6252   0.01219   0.00653  -0.1051   0.8668   0.0991
 -10.000  -0.5983   0.01206   0.00633  -0.1048   0.8598   0.1014
  -9.750  -0.5733   0.01180   0.00608  -0.1044   0.8529   0.1047
  -9.500  -0.5471   0.01162   0.00589  -0.1040   0.8453   0.1074
  -9.250  -0.5201   0.01151   0.00571  -0.1037   0.8378   0.1096
  -9.000  -0.4941   0.01130   0.00549  -0.1033   0.8308   0.1122
  -8.750  -0.4680   0.01111   0.00530  -0.1030   0.8229   0.1149
  -8.500  -0.4412   0.01099   0.00513  -0.1027   0.8154   0.1175
  -8.250  -0.4137   0.01088   0.00499  -0.1025   0.8082   0.1194
  -8.000  -0.3878   0.01069   0.00477  -0.1020   0.7999   0.1225
  -7.750  -0.3613   0.01054   0.00461  -0.1017   0.7922   0.1254
  -7.500  -0.3341   0.01041   0.00447  -0.1015   0.7843   0.1280
  -7.250  -0.3069   0.01035   0.00434  -0.1012   0.7759   0.1301
  -7.000  -0.2805   0.01015   0.00415  -0.1009   0.7682   0.1338
  -6.750  -0.2539   0.01003   0.00401  -0.1005   0.7590   0.1371
  -6.500  -0.2268   0.00994   0.00388  -0.1003   0.7505   0.1401
  -6.250  -0.1998   0.00982   0.00374  -0.1000   0.7416   0.1437
  -6.000  -0.1737   0.00971   0.00361  -0.0995   0.7324   0.1483
  -5.750  -0.1461   0.00960   0.00350  -0.0994   0.7238   0.1524
  -5.500  -0.1201   0.00950   0.00337  -0.0989   0.7135   0.1582
  -5.250  -0.0931   0.00939   0.00327  -0.0986   0.7042   0.1650
  -5.000  -0.0672   0.00928   0.00316  -0.0982   0.6938   0.1737
  -4.750  -0.0404   0.00918   0.00307  -0.0979   0.6846   0.1831
  -4.500  -0.0140   0.00910   0.00299  -0.0975   0.6744   0.1935
  -4.250   0.0126   0.00902   0.00293  -0.0971   0.6650   0.2051
  -4.000   0.0393   0.00897   0.00288  -0.0968   0.6545   0.2153
  -3.750   0.0660   0.00895   0.00285  -0.0964   0.6446   0.2249
  -3.500   0.0928   0.00891   0.00280  -0.0961   0.6342   0.2335
  -3.250   0.1195   0.00891   0.00278  -0.0957   0.6247   0.2412
  -3.000   0.1470   0.00891   0.00276  -0.0955   0.6154   0.2465
  -2.750   0.1729   0.00890   0.00272  -0.0950   0.6059   0.2544
  -2.500   0.2005   0.00888   0.00270  -0.0949   0.5975   0.2607
  -2.250   0.2268   0.00894   0.00270  -0.0944   0.5878   0.2649
  -2.000   0.2538   0.00889   0.00267  -0.0942   0.5799   0.2736
  -1.750   0.2804   0.00889   0.00266  -0.0938   0.5715   0.2808
  -1.500   0.3068   0.00892   0.00267  -0.0934   0.5636   0.2874
  -1.250   0.3340   0.00888   0.00266  -0.0932   0.5568   0.2975
  -0.750   0.3864   0.00889   0.00268  -0.0924   0.5415   0.3209
  -0.500   0.4130   0.00886   0.00269  -0.0921   0.5339   0.3374
  -0.250   0.4378   0.00888   0.00273  -0.0914   0.5253   0.3575
   0.000   0.4646   0.00884   0.00276  -0.0912   0.5191   0.3802
   0.250   0.4910   0.00882   0.00279  -0.0908   0.5129   0.4026
   0.500   0.5162   0.00884   0.00284  -0.0903   0.5063   0.4250
   0.750   0.5423   0.00882   0.00289  -0.0899   0.5008   0.4509
   1.000   0.5688   0.00878   0.00294  -0.0896   0.4955   0.4814
   1.250   0.5943   0.00878   0.00301  -0.0891   0.4898   0.5122
   1.500   0.6183   0.00880   0.00309  -0.0883   0.4834   0.5460
   1.750   0.6448   0.00874   0.00317  -0.0880   0.4792   0.5859
   2.000   0.6706   0.00871   0.00325  -0.0876   0.4742   0.6222
   2.250   0.6953   0.00874   0.00335  -0.0869   0.4689   0.6526
   2.500   0.7177   0.00882   0.00346  -0.0858   0.4629   0.6807
   2.750   0.7433   0.00881   0.00354  -0.0853   0.4591   0.7066
   3.000   0.7678   0.00884   0.00363  -0.0846   0.4544   0.7311
   3.250   0.7913   0.00890   0.00375  -0.0836   0.4495   0.7562
   3.750   0.8394   0.00903   0.00404  -0.0821   0.4399   0.8127
   4.000   0.8639   0.00907   0.00419  -0.0813   0.4353   0.8466
   4.250   0.8864   0.00916   0.00436  -0.0801   0.4305   0.8831
   4.500   0.9060   0.00932   0.00457  -0.0783   0.4252   0.9190
   4.750   0.9286   0.00944   0.00474  -0.0771   0.4208   0.9478
   5.000   0.9564   0.00958   0.00490  -0.0771   0.4152   0.9703
   5.250   0.9882   0.00983   0.00510  -0.0781   0.4080   0.9863
   5.750   1.0543   0.01023   0.00545  -0.0808   0.3938   1.0000
   6.000   1.0690   0.01047   0.00563  -0.0784   0.3863   1.0000
   6.250   1.0909   0.01061   0.00577  -0.0774   0.3807   1.0000
   6.500   1.1119   0.01082   0.00595  -0.0763   0.3741   1.0000
   6.750   1.1308   0.01112   0.00621  -0.0748   0.3671   1.0000
   7.000   1.1541   0.01131   0.00640  -0.0741   0.3614   1.0000
   7.250   1.1747   0.01160   0.00666  -0.0731   0.3538   1.0000
   7.500   1.1954   0.01191   0.00693  -0.0720   0.3465   1.0000
   7.750   1.2165   0.01221   0.00721  -0.0711   0.3388   1.0000
   8.000   1.2353   0.01261   0.00757  -0.0698   0.3308   1.0000
   8.250   1.2565   0.01293   0.00787  -0.0689   0.3227   1.0000
   8.500   1.2740   0.01341   0.00830  -0.0675   0.3137   1.0000
   8.750   1.2938   0.01381   0.00868  -0.0665   0.3050   1.0000
   9.000   1.3111   0.01433   0.00916  -0.0652   0.2964   1.0000
   9.250   1.3298   0.01480   0.00961  -0.0641   0.2887   1.0000
   9.500   1.3457   0.01541   0.01017  -0.0626   0.2806   1.0000
   9.750   1.3645   0.01590   0.01065  -0.0616   0.2733   1.0000
  10.250   1.3966   0.01717   0.01187  -0.0590   0.2579   1.0000
  10.500   1.4097   0.01798   0.01264  -0.0574   0.2498   1.0000
  10.750   1.4272   0.01858   0.01324  -0.0564   0.2437   1.0000
  11.000   1.4413   0.01938   0.01402  -0.0550   0.2365   1.0000
  11.250   1.4558   0.02017   0.01480  -0.0538   0.2296   1.0000
  11.500   1.4689   0.02106   0.01566  -0.0524   0.2216   1.0000
  11.750   1.4814   0.02202   0.01660  -0.0511   0.2140   1.0000
  12.000   1.4922   0.02310   0.01766  -0.0496   0.2056   1.0000
  12.250   1.5040   0.02416   0.01871  -0.0484   0.1980   1.0000
  12.500   1.5118   0.02551   0.02002  -0.0468   0.1890   1.0000
  12.750   1.5206   0.02683   0.02131  -0.0454   0.1798   1.0000
  13.000   1.5275   0.02833   0.02279  -0.0440   0.1710   1.0000
  13.250   1.5327   0.02999   0.02442  -0.0425   0.1625   1.0000
  13.500   1.5384   0.03169   0.02610  -0.0412   0.1547   1.0000
  13.750   1.5433   0.03347   0.02787  -0.0399   0.1478   1.0000
  14.000   1.5464   0.03544   0.02983  -0.0386   0.1412   1.0000
  14.250   1.5516   0.03732   0.03172  -0.0376   0.1358   1.0000
  14.500   1.5536   0.03952   0.03392  -0.0365   0.1307   1.0000
  14.750   1.5590   0.04144   0.03586  -0.0356   0.1267   1.0000
  15.000   1.5621   0.04363   0.03807  -0.0348   0.1231   1.0000
  15.250   1.5623   0.04612   0.04058  -0.0339   0.1194   1.0000
  15.500   1.5683   0.04810   0.04260  -0.0333   0.1169   1.0000
  15.750   1.5708   0.05048   0.04501  -0.0328   0.1143   1.0000
  16.000   1.5711   0.05307   0.04764  -0.0322   0.1116   1.0000
  16.250   1.5711   0.05573   0.05033  -0.0316   0.1091   1.0000
  16.500   1.5746   0.05809   0.05275  -0.0313   0.1073   1.0000
  16.750   1.5771   0.06054   0.05524  -0.0310   0.1053   1.0000
  17.000   1.5758   0.06348   0.05821  -0.0307   0.1032   1.0000
  17.250   1.5720   0.06666   0.06144  -0.0304   0.1011   1.0000
  17.500   1.5738   0.06925   0.06409  -0.0303   0.0995   1.0000
  17.750   1.5750   0.07197   0.06687  -0.0302   0.0978   1.0000
  18.000   1.5755   0.07476   0.06970  -0.0302   0.0960   1.0000
  18.250   1.5715   0.07812   0.07309  -0.0302   0.0941   1.0000
  18.500   1.5665   0.08156   0.07657  -0.0303   0.0921   1.0000
  18.750   1.5677   0.08434   0.07942  -0.0304   0.0907   1.0000
  19.000   1.5693   0.08705   0.08218  -0.0306   0.0889   1.0000
  19.250   1.5657   0.09046   0.08564  -0.0310   0.0872   1.0000
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