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NACA 4421 (naca4421-il) Xfoil prediction polar at RE=200,000 Ncrit=5


Details Polar file
Airfoil: NACA 4421 (naca4421-il)
Reynolds number: 200,000
Max Cl/Cd: 58.43 at α=6.5°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-naca4421-il-200000-n5.txt
Download as CSV file: xf-naca4421-il-200000-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 =     0.200 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -18.250  -0.7301   0.10127   0.09565  -0.0816   1.0000   0.0596
 -18.000  -0.7666   0.09250   0.08666  -0.0860   1.0000   0.0605
 -17.750  -0.7747   0.08861   0.08275  -0.0874   1.0000   0.0612
 -17.500  -0.7839   0.08467   0.07879  -0.0888   1.0000   0.0619
 -17.250  -0.7979   0.08009   0.07416  -0.0904   1.0000   0.0627
 -17.000  -0.8146   0.07533   0.06932  -0.0921   1.0000   0.0635
 -16.750  -0.8326   0.07065   0.06455  -0.0936   1.0000   0.0642
 -16.500  -0.8509   0.06620   0.06000  -0.0947   1.0000   0.0650
 -16.250  -0.8689   0.06210   0.05578  -0.0954   1.0000   0.0658
 -16.000  -0.8853   0.05847   0.05208  -0.0956   1.0000   0.0665
 -15.750  -0.9011   0.05521   0.04879  -0.0954   1.0000   0.0671
 -15.500  -0.9181   0.05206   0.04560  -0.0948   1.0000   0.0677
 -15.250  -0.9356   0.04915   0.04263  -0.0938   1.0000   0.0683
 -15.000  -0.9332   0.04588   0.03926  -0.0964   0.9975   0.0695
 -14.750  -0.9238   0.04286   0.03612  -0.0996   0.9942   0.0710
 -14.500  -0.9120   0.04023   0.03336  -0.1025   0.9912   0.0725
 -14.250  -0.9022   0.03783   0.03092  -0.1046   0.9863   0.0737
 -14.000  -0.8879   0.03578   0.02879  -0.1069   0.9822   0.0754
 -13.750  -0.8694   0.03400   0.02690  -0.1092   0.9791   0.0776
 -13.500  -0.8577   0.03249   0.02532  -0.1097   0.9728   0.0794
 -13.250  -0.8401   0.03111   0.02389  -0.1109   0.9681   0.0814
 -13.000  -0.8170   0.02990   0.02259  -0.1126   0.9652   0.0841
 -12.750  -0.8042   0.02892   0.02153  -0.1119   0.9580   0.0863
 -12.500  -0.7843   0.02795   0.02054  -0.1123   0.9530   0.0886
 -12.250  -0.7598   0.02707   0.01956  -0.1132   0.9497   0.0916
 -12.000  -0.7492   0.02641   0.01884  -0.1111   0.9411   0.0939
 -11.750  -0.7289   0.02569   0.01809  -0.1108   0.9358   0.0966
 -11.500  -0.7017   0.02498   0.01729  -0.1115   0.9325   0.1001
 -11.250  -0.6899   0.02448   0.01675  -0.1092   0.9234   0.1025
 -11.000  -0.6663   0.02387   0.01611  -0.1090   0.9183   0.1055
 -10.750  -0.6377   0.02327   0.01541  -0.1096   0.9147   0.1091
 -10.500  -0.6239   0.02285   0.01497  -0.1074   0.9054   0.1116
 -10.250  -0.5994   0.02232   0.01441  -0.1072   0.8998   0.1148
 -10.000  -0.5701   0.02179   0.01379  -0.1078   0.8960   0.1185
  -9.750  -0.5542   0.02143   0.01341  -0.1058   0.8867   0.1211
  -9.500  -0.5294   0.02096   0.01292  -0.1055   0.8809   0.1243
  -9.250  -0.4996   0.02048   0.01237  -0.1060   0.8767   0.1281
  -9.000  -0.4815   0.02018   0.01203  -0.1043   0.8674   0.1310
  -8.750  -0.4562   0.01973   0.01158  -0.1040   0.8612   0.1342
  -8.500  -0.4280   0.01933   0.01112  -0.1041   0.8558   0.1380
  -8.250  -0.4066   0.01908   0.01079  -0.1029   0.8469   0.1413
  -8.000  -0.3806   0.01863   0.01037  -0.1027   0.8403   0.1448
  -7.750  -0.3547   0.01830   0.01000  -0.1024   0.8334   0.1488
  -7.500  -0.3307   0.01804   0.00967  -0.1016   0.8249   0.1528
  -7.250  -0.3036   0.01766   0.00929  -0.1015   0.8181   0.1570
  -7.000  -0.2797   0.01740   0.00902  -0.1008   0.8098   0.1618
  -6.750  -0.2538   0.01714   0.00870  -0.1004   0.8015   0.1671
  -6.500  -0.2267   0.01682   0.00838  -0.1002   0.7944   0.1724
  -6.250  -0.2031   0.01662   0.00816  -0.0994   0.7849   0.1779
  -6.000  -0.1762   0.01636   0.00787  -0.0991   0.7769   0.1834
  -5.750  -0.1513   0.01615   0.00767  -0.0985   0.7684   0.1896
  -5.500  -0.1254   0.01596   0.00744  -0.0980   0.7593   0.1962
  -5.250  -0.0989   0.01577   0.00724  -0.0977   0.7510   0.2038
  -5.000  -0.0738   0.01563   0.00707  -0.0971   0.7411   0.2115
  -4.750  -0.0465   0.01547   0.00687  -0.0969   0.7329   0.2198
  -4.500  -0.0215   0.01537   0.00674  -0.0962   0.7234   0.2279
  -4.250   0.0047   0.01522   0.00658  -0.0958   0.7142   0.2365
  -4.000   0.0307   0.01515   0.00644  -0.0953   0.7047   0.2452
  -3.750   0.0561   0.01500   0.00630  -0.0948   0.6951   0.2534
  -3.500   0.0823   0.01492   0.00618  -0.0943   0.6863   0.2619
  -3.250   0.1076   0.01482   0.00607  -0.0938   0.6769   0.2697
  -3.000   0.1339   0.01474   0.00595  -0.0934   0.6683   0.2789
  -2.750   0.1589   0.01467   0.00588  -0.0927   0.6586   0.2876
  -2.500   0.1848   0.01459   0.00578  -0.0922   0.6497   0.2975
  -2.250   0.2101   0.01455   0.00573  -0.0917   0.6409   0.3072
  -2.000   0.2354   0.01449   0.00568  -0.0911   0.6325   0.3184
  -1.750   0.2613   0.01445   0.00563  -0.0906   0.6247   0.3306
  -1.500   0.2861   0.01441   0.00563  -0.0900   0.6160   0.3450
  -1.250   0.3116   0.01438   0.00559  -0.0895   0.6081   0.3608
  -1.000   0.3364   0.01434   0.00561  -0.0889   0.6002   0.3786
  -0.750   0.3614   0.01431   0.00563  -0.0883   0.5927   0.3990
  -0.250   0.4114   0.01427   0.00570  -0.0871   0.5788   0.4458
   0.000   0.4359   0.01424   0.00575  -0.0864   0.5715   0.4726
   0.500   0.4851   0.01421   0.00589  -0.0850   0.5587   0.5312
   0.750   0.5095   0.01422   0.00599  -0.0843   0.5521   0.5611
   1.000   0.5341   0.01425   0.00607  -0.0835   0.5460   0.5924
   1.250   0.5580   0.01427   0.00621  -0.0827   0.5396   0.6243
   1.500   0.5817   0.01432   0.00634  -0.0818   0.5327   0.6544
   1.750   0.6057   0.01439   0.00644  -0.0809   0.5260   0.6832
   2.000   0.6291   0.01445   0.00658  -0.0799   0.5198   0.7122
   2.250   0.6520   0.01452   0.00675  -0.0787   0.5132   0.7417
   2.500   0.6751   0.01461   0.00690  -0.0776   0.5074   0.7715
   2.750   0.6989   0.01474   0.00706  -0.0766   0.5022   0.8012
   3.000   0.7217   0.01485   0.00728  -0.0754   0.4963   0.8315
   3.250   0.7459   0.01500   0.00749  -0.0744   0.4905   0.8617
   3.500   0.7730   0.01521   0.00769  -0.0741   0.4851   0.8924
   3.750   0.8027   0.01543   0.00792  -0.0744   0.4797   0.9217
   4.000   0.8364   0.01566   0.00819  -0.0756   0.4736   0.9479
   4.250   0.8728   0.01593   0.00843  -0.0775   0.4675   0.9698
   4.500   0.9115   0.01624   0.00866  -0.0800   0.4621   0.9863
   4.750   0.9524   0.01652   0.00898  -0.0830   0.4557   0.9996
   5.000   0.9631   0.01666   0.00909  -0.0799   0.4504   1.0000
   5.250   0.9744   0.01682   0.00919  -0.0768   0.4454   1.0000
   5.500   0.9885   0.01702   0.00936  -0.0743   0.4406   1.0000
   5.750   1.0029   0.01722   0.00959  -0.0720   0.4351   1.0000
   6.000   1.0187   0.01747   0.00981  -0.0699   0.4295   1.0000
   6.250   1.0364   0.01775   0.01002  -0.0682   0.4243   1.0000
   6.500   1.0535   0.01803   0.01034  -0.0665   0.4188   1.0000
   6.750   1.0706   0.01834   0.01066  -0.0648   0.4128   1.0000
   7.000   1.0879   0.01868   0.01096  -0.0632   0.4070   1.0000
   7.250   1.1049   0.01904   0.01131  -0.0616   0.4008   1.0000
   7.500   1.1201   0.01944   0.01173  -0.0597   0.3930   1.0000
   7.750   1.1341   0.01990   0.01211  -0.0578   0.3850   1.0000
   8.000   1.1479   0.02038   0.01264  -0.0559   0.3757   1.0000
   8.250   1.1612   0.02093   0.01313  -0.0539   0.3676   1.0000
   8.500   1.1766   0.02146   0.01370  -0.0524   0.3597   1.0000
   8.750   1.1906   0.02206   0.01428  -0.0507   0.3524   1.0000
   9.000   1.2052   0.02268   0.01491  -0.0492   0.3453   1.0000
   9.250   1.2188   0.02337   0.01560  -0.0476   0.3374   1.0000
   9.500   1.2314   0.02412   0.01633  -0.0460   0.3304   1.0000
   9.750   1.2448   0.02488   0.01713  -0.0445   0.3225   1.0000
  10.000   1.2556   0.02578   0.01799  -0.0428   0.3152   1.0000
  10.250   1.2683   0.02664   0.01890  -0.0415   0.3076   1.0000
  10.500   1.2782   0.02767   0.01990  -0.0399   0.3002   1.0000
  10.750   1.2891   0.02869   0.02094  -0.0385   0.2930   1.0000
  11.000   1.2982   0.02984   0.02209  -0.0370   0.2854   1.0000
  11.250   1.3071   0.03105   0.02330  -0.0355   0.2787   1.0000
  11.500   1.3163   0.03229   0.02457  -0.0342   0.2716   1.0000
  11.750   1.3225   0.03375   0.02600  -0.0328   0.2651   1.0000
  12.000   1.3319   0.03509   0.02740  -0.0317   0.2582   1.0000
  12.250   1.3376   0.03671   0.02902  -0.0304   0.2513   1.0000
  12.500   1.3448   0.03828   0.03061  -0.0293   0.2448   1.0000
  12.750   1.3505   0.04001   0.03238  -0.0283   0.2379   1.0000
  13.000   1.3547   0.04190   0.03427  -0.0272   0.2318   1.0000
  13.250   1.3609   0.04371   0.03614  -0.0264   0.2248   1.0000
  13.500   1.3624   0.04595   0.03837  -0.0254   0.2184   1.0000
  13.750   1.3674   0.04796   0.04045  -0.0248   0.2115   1.0000
  14.000   1.3683   0.05038   0.04287  -0.0240   0.2049   1.0000
  14.250   1.3712   0.05269   0.04523  -0.0235   0.1984   1.0000
  14.500   1.3709   0.05534   0.04791  -0.0229   0.1918   1.0000
  14.750   1.3719   0.05794   0.05054  -0.0225   0.1853   1.0000
  15.000   1.3699   0.06088   0.05350  -0.0222   0.1786   1.0000
  15.250   1.3686   0.06381   0.05645  -0.0219   0.1721   1.0000
  15.500   1.3653   0.06701   0.05967  -0.0218   0.1656   1.0000
  15.750   1.3632   0.07013   0.06282  -0.0217   0.1594   1.0000
  16.000   1.3589   0.07355   0.06625  -0.0217   0.1535   1.0000
  16.250   1.3567   0.07674   0.06947  -0.0218   0.1481   1.0000
  16.500   1.3538   0.08007   0.07283  -0.0220   0.1431   1.0000
  16.750   1.3510   0.08339   0.07617  -0.0222   0.1392   1.0000
  17.000   1.3516   0.08636   0.07920  -0.0225   0.1353   1.0000
  17.250   1.3497   0.08963   0.08250  -0.0229   0.1319   1.0000
  17.500   1.3485   0.09279   0.08567  -0.0233   0.1288   1.0000
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