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NACA 2421 (naca2421-il) Xfoil prediction polar at RE=1,000,000 Ncrit=9


Details Polar file
Airfoil: NACA 2421 (naca2421-il)
Reynolds number: 1,000,000
Max Cl/Cd: 89.47 at α=7.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca2421-il-1000000.txt
Download as CSV file: xf-naca2421-il-1000000.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: NACA 2421                                       
  
 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  -1.2049   0.07395   0.06962  -0.0689   1.0000   0.0531
 -19.500  -1.2117   0.06993   0.06551  -0.0705   1.0000   0.0535
 -19.250  -1.2217   0.06561   0.06110  -0.0722   1.0000   0.0541
 -19.000  -1.2371   0.06071   0.05613  -0.0740   1.0000   0.0547
 -18.750  -1.2482   0.05639   0.05174  -0.0755   1.0000   0.0554
 -18.500  -1.2557   0.05258   0.04786  -0.0768   1.0000   0.0560
 -18.250  -1.2601   0.04919   0.04441  -0.0778   1.0000   0.0567
 -18.000  -1.2616   0.04619   0.04134  -0.0786   1.0000   0.0573
 -17.750  -1.2610   0.04351   0.03859  -0.0792   1.0000   0.0580
 -17.500  -1.2583   0.04111   0.03612  -0.0797   1.0000   0.0586
 -17.250  -1.2533   0.03898   0.03391  -0.0800   1.0000   0.0592
 -17.000  -1.2585   0.03598   0.03086  -0.0802   1.0000   0.0601
 -16.750  -1.2579   0.03366   0.02850  -0.0802   1.0000   0.0609
 -16.500  -1.2542   0.03173   0.02652  -0.0799   1.0000   0.0618
 -16.250  -1.2492   0.03005   0.02481  -0.0793   1.0000   0.0627
 -16.000  -1.2434   0.02862   0.02333  -0.0784   1.0000   0.0635
 -15.750  -1.2378   0.02740   0.02206  -0.0771   1.0000   0.0643
 -15.500  -1.2337   0.02630   0.02090  -0.0753   1.0000   0.0650
 -15.250  -1.2397   0.02492   0.01950  -0.0722   1.0000   0.0661
 -15.000  -1.2461   0.02389   0.01844  -0.0684   1.0000   0.0669
 -14.750  -1.2550   0.02307   0.01759  -0.0638   1.0000   0.0677
 -14.500  -1.2335   0.02214   0.01664  -0.0645   0.9987   0.0691
 -14.250  -1.2079   0.02138   0.01584  -0.0655   0.9971   0.0704
 -14.000  -1.1830   0.02054   0.01497  -0.0666   0.9952   0.0718
 -13.750  -1.1584   0.01965   0.01408  -0.0676   0.9935   0.0736
 -13.500  -1.1310   0.01895   0.01337  -0.0689   0.9923   0.0754
 -13.250  -1.1034   0.01839   0.01277  -0.0698   0.9905   0.0771
 -13.000  -1.0794   0.01772   0.01209  -0.0701   0.9871   0.0791
 -12.750  -1.0526   0.01706   0.01145  -0.0710   0.9846   0.0813
 -12.500  -1.0224   0.01653   0.01090  -0.0722   0.9827   0.0836
 -12.250  -0.9923   0.01599   0.01035  -0.0734   0.9804   0.0858
 -12.000  -0.9670   0.01542   0.00980  -0.0736   0.9762   0.0885
 -11.750  -0.9457   0.01498   0.00935  -0.0727   0.9691   0.0910
 -11.500  -0.9221   0.01455   0.00890  -0.0722   0.9638   0.0936
 -11.250  -0.9062   0.01414   0.00850  -0.0703   0.9555   0.0966
 -11.000  -0.8863   0.01380   0.00814  -0.0689   0.9487   0.0995
 -10.750  -0.8690   0.01351   0.00783  -0.0670   0.9408   0.1026
 -10.500  -0.8490   0.01317   0.00750  -0.0656   0.9333   0.1064
 -10.250  -0.8261   0.01293   0.00723  -0.0647   0.9266   0.1097
 -10.000  -0.8051   0.01260   0.00692  -0.0635   0.9185   0.1143
  -9.500  -0.7586   0.01209   0.00640  -0.0619   0.9032   0.1229
  -9.250  -0.7345   0.01186   0.00616  -0.0611   0.8954   0.1274
  -9.000  -0.7098   0.01166   0.00594  -0.0605   0.8879   0.1313
  -8.750  -0.6857   0.01142   0.00570  -0.0598   0.8789   0.1362
  -8.500  -0.6600   0.01126   0.00550  -0.0594   0.8706   0.1402
  -8.250  -0.6353   0.01103   0.00528  -0.0588   0.8620   0.1448
  -8.000  -0.6101   0.01085   0.00508  -0.0582   0.8530   0.1494
  -7.750  -0.5836   0.01072   0.00492  -0.0579   0.8441   0.1529
  -7.500  -0.5588   0.01050   0.00469  -0.0573   0.8340   0.1585
  -7.250  -0.5329   0.01033   0.00452  -0.0569   0.8249   0.1633
  -7.000  -0.5068   0.01019   0.00435  -0.0564   0.8147   0.1681
  -6.750  -0.4813   0.01000   0.00417  -0.0559   0.8048   0.1745
  -6.500  -0.4549   0.00988   0.00402  -0.0556   0.7941   0.1799
  -6.250  -0.4295   0.00970   0.00385  -0.0551   0.7839   0.1882
  -6.000  -0.4033   0.00956   0.00371  -0.0547   0.7729   0.1964
  -5.750  -0.3774   0.00942   0.00357  -0.0542   0.7620   0.2066
  -5.500  -0.3516   0.00928   0.00344  -0.0537   0.7498   0.2173
  -5.250  -0.3249   0.00919   0.00334  -0.0534   0.7383   0.2271
  -5.000  -0.2989   0.00908   0.00324  -0.0530   0.7263   0.2380
  -4.750  -0.2719   0.00899   0.00315  -0.0527   0.7159   0.2469
  -4.500  -0.2454   0.00892   0.00306  -0.0523   0.7044   0.2561
  -4.250  -0.2180   0.00885   0.00299  -0.0521   0.6942   0.2638
  -4.000  -0.1914   0.00878   0.00291  -0.0518   0.6833   0.2726
  -3.750  -0.1636   0.00875   0.00286  -0.0516   0.6735   0.2792
  -3.500  -0.1372   0.00867   0.00278  -0.0512   0.6625   0.2889
  -3.250  -0.1097   0.00863   0.00273  -0.0511   0.6523   0.2972
  -3.000  -0.0831   0.00858   0.00267  -0.0507   0.6408   0.3063
  -2.750  -0.0559   0.00854   0.00263  -0.0505   0.6301   0.3150
  -2.500  -0.0291   0.00852   0.00258  -0.0501   0.6186   0.3236
  -2.250  -0.0020   0.00846   0.00254  -0.0499   0.6088   0.3337
  -2.000   0.0250   0.00845   0.00251  -0.0496   0.5983   0.3431
  -1.750   0.0519   0.00839   0.00248  -0.0493   0.5891   0.3558
  -1.500   0.0788   0.00835   0.00245  -0.0490   0.5794   0.3691
  -1.000   0.1326   0.00827   0.00242  -0.0485   0.5616   0.3997
  -0.750   0.1584   0.00826   0.00242  -0.0480   0.5513   0.4182
  -0.500   0.1856   0.00819   0.00241  -0.0478   0.5424   0.4380
  -0.250   0.2115   0.00819   0.00242  -0.0473   0.5323   0.4572
   0.000   0.2388   0.00815   0.00243  -0.0471   0.5245   0.4769
   0.250   0.2654   0.00813   0.00245  -0.0468   0.5160   0.4974
   0.500   0.2918   0.00814   0.00248  -0.0464   0.5078   0.5176
   0.750   0.3191   0.00811   0.00251  -0.0462   0.4998   0.5385
   1.250   0.3722   0.00812   0.00259  -0.0455   0.4834   0.5786
   1.500   0.3990   0.00813   0.00264  -0.0452   0.4759   0.5958
   1.750   0.4251   0.00819   0.00270  -0.0447   0.4674   0.6114
   2.000   0.4528   0.00820   0.00274  -0.0446   0.4603   0.6272
   2.250   0.4788   0.00824   0.00281  -0.0441   0.4518   0.6431
   2.500   0.5055   0.00829   0.00288  -0.0438   0.4445   0.6579
   2.750   0.5323   0.00833   0.00294  -0.0435   0.4366   0.6739
   3.000   0.5574   0.00841   0.00303  -0.0429   0.4275   0.6907
   3.250   0.5843   0.00843   0.00311  -0.0427   0.4202   0.7079
   3.500   0.6096   0.00851   0.00321  -0.0421   0.4114   0.7269
   4.000   0.6608   0.00865   0.00342  -0.0410   0.3951   0.7667
   4.250   0.6853   0.00875   0.00354  -0.0403   0.3864   0.7863
   4.500   0.7105   0.00883   0.00366  -0.0397   0.3778   0.8056
   4.750   0.7340   0.00897   0.00382  -0.0388   0.3687   0.8253
   5.000   0.7592   0.00905   0.00395  -0.0382   0.3616   0.8448
   5.250   0.7825   0.00920   0.00411  -0.0372   0.3536   0.8633
   5.500   0.8060   0.00933   0.00427  -0.0363   0.3470   0.8811
   5.750   0.8277   0.00945   0.00443  -0.0349   0.3397   0.8986
   6.000   0.8463   0.00965   0.00463  -0.0330   0.3315   0.9176
   6.250   0.8680   0.00979   0.00481  -0.0315   0.3258   0.9361
   6.500   0.8882   0.01001   0.00504  -0.0299   0.3180   0.9522
   6.750   0.9107   0.01025   0.00526  -0.0288   0.3103   0.9650
   7.000   0.9357   0.01049   0.00548  -0.0283   0.3019   0.9758
   7.250   0.9667   0.01081   0.00575  -0.0292   0.2922   0.9819
   7.500   0.9976   0.01115   0.00603  -0.0301   0.2806   0.9878
   7.750   1.0292   0.01151   0.00633  -0.0313   0.2674   0.9919
   8.000   1.0624   0.01195   0.00668  -0.0329   0.2522   0.9941
   8.250   1.0943   0.01240   0.00705  -0.0343   0.2395   0.9968
   8.500   1.1248   0.01289   0.00746  -0.0355   0.2284   0.9996
   8.750   1.1321   0.01309   0.00766  -0.0318   0.2231   1.0000
   9.000   1.1372   0.01339   0.00793  -0.0278   0.2172   1.0000
   9.250   1.1491   0.01373   0.00824  -0.0252   0.2114   1.0000
   9.500   1.1649   0.01408   0.00858  -0.0233   0.2062   1.0000
   9.750   1.1800   0.01455   0.00902  -0.0215   0.2002   1.0000
  10.000   1.1978   0.01495   0.00942  -0.0202   0.1954   1.0000
  10.250   1.2156   0.01539   0.00985  -0.0189   0.1900   1.0000
  10.500   1.2307   0.01599   0.01040  -0.0173   0.1838   1.0000
  10.750   1.2498   0.01642   0.01085  -0.0163   0.1794   1.0000
  11.000   1.2662   0.01700   0.01140  -0.0151   0.1736   1.0000
  11.250   1.2823   0.01762   0.01201  -0.0138   0.1684   1.0000
  11.500   1.2995   0.01821   0.01260  -0.0128   0.1631   1.0000
  11.750   1.3130   0.01901   0.01337  -0.0114   0.1573   1.0000
  12.000   1.3299   0.01965   0.01401  -0.0104   0.1524   1.0000
  12.250   1.3426   0.02054   0.01488  -0.0091   0.1467   1.0000
  12.500   1.3575   0.02134   0.01568  -0.0080   0.1418   1.0000
  12.750   1.3695   0.02234   0.01667  -0.0068   0.1364   1.0000
  13.000   1.3824   0.02331   0.01763  -0.0057   0.1319   1.0000
  13.250   1.3942   0.02438   0.01870  -0.0046   0.1274   1.0000
  13.500   1.4039   0.02562   0.01994  -0.0034   0.1230   1.0000
  13.750   1.4164   0.02671   0.02105  -0.0026   0.1193   1.0000
  14.000   1.4250   0.02812   0.02245  -0.0015   0.1153   1.0000
  14.250   1.4349   0.02945   0.02381  -0.0006   0.1119   1.0000
  14.500   1.4442   0.03089   0.02526   0.0002   0.1083   1.0000
  14.750   1.4498   0.03267   0.02704   0.0011   0.1046   1.0000
  15.000   1.4596   0.03413   0.02854   0.0017   0.1015   1.0000
  15.250   1.4657   0.03594   0.03037   0.0024   0.0982   1.0000
  15.500   1.4698   0.03799   0.03243   0.0031   0.0950   1.0000
  15.750   1.4774   0.03975   0.03423   0.0035   0.0921   1.0000
  16.000   1.4805   0.04197   0.03646   0.0040   0.0891   1.0000
  16.250   1.4835   0.04425   0.03877   0.0044   0.0864   1.0000
  16.500   1.4874   0.04647   0.04103   0.0048   0.0837   1.0000
  16.750   1.4874   0.04910   0.04369   0.0050   0.0809   1.0000
  17.000   1.4890   0.05166   0.04629   0.0052   0.0786   1.0000
  17.250   1.4895   0.05435   0.04903   0.0053   0.0762   1.0000
  17.500   1.4867   0.05741   0.05212   0.0053   0.0740   1.0000
  17.750   1.4860   0.06029   0.05504   0.0052   0.0720   1.0000
  18.000   1.4845   0.06334   0.05815   0.0050   0.0701   1.0000
  18.250   1.4799   0.06674   0.06159   0.0048   0.0683   1.0000
  18.500   1.4737   0.07034   0.06523   0.0045   0.0665   1.0000
  18.750   1.4721   0.07349   0.06846   0.0040   0.0651   1.0000
  19.000   1.4676   0.07700   0.07202   0.0035   0.0637   1.0000
  19.250   1.4617   0.08072   0.07578   0.0029   0.0623   1.0000
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