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NACA 2421 (naca2421-il) Xfoil prediction polar at RE=200,000 Ncrit=9


Details Polar file
Airfoil: NACA 2421 (naca2421-il)
Reynolds number: 200,000
Max Cl/Cd: 57.54 at α=6.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca2421-il-200000.txt
Download as CSV file: xf-naca2421-il-200000.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 =     0.200 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -18.000  -1.0082   0.07506   0.06900  -0.0819   1.0000   0.0906
 -17.750  -1.0471   0.06761   0.06125  -0.0854   1.0000   0.0913
 -17.500  -1.0778   0.06179   0.05514  -0.0876   1.0000   0.0920
 -17.250  -1.0881   0.05824   0.05144  -0.0882   1.0000   0.0929
 -17.000  -1.0651   0.05784   0.05119  -0.0876   1.0000   0.0944
 -16.750  -1.0596   0.05598   0.04932  -0.0877   1.0000   0.0957
 -16.500  -1.0637   0.05334   0.04658  -0.0879   1.0000   0.0970
 -16.250  -1.0726   0.05045   0.04353  -0.0879   1.0000   0.0983
 -16.000  -1.0837   0.04762   0.04051  -0.0874   1.0000   0.0995
 -15.750  -1.0972   0.04499   0.03766  -0.0863   1.0000   0.1005
 -15.500  -1.0794   0.04399   0.03675  -0.0856   1.0000   0.1022
 -15.250  -1.0688   0.04294   0.03576  -0.0846   1.0000   0.1037
 -15.000  -1.0663   0.04159   0.03438  -0.0832   1.0000   0.1053
 -14.750  -1.0694   0.04008   0.03278  -0.0812   1.0000   0.1069
 -14.500  -1.0773   0.03857   0.03111  -0.0785   1.0000   0.1083
 -14.250  -1.0896   0.03721   0.02957  -0.0749   1.0000   0.1095
 -14.000  -1.0732   0.03639   0.02890  -0.0736   1.0000   0.1115
 -13.750  -1.0700   0.03565   0.02819  -0.0709   1.0000   0.1132
 -13.500  -1.0729   0.03486   0.02738  -0.0673   1.0000   0.1148
 -13.250  -1.0805   0.03409   0.02653  -0.0630   1.0000   0.1164
 -13.000  -1.0928   0.03339   0.02572  -0.0577   1.0000   0.1179
 -12.750  -1.1102   0.03283   0.02503  -0.0514   1.0000   0.1190
 -12.500  -1.1055   0.03213   0.02442  -0.0483   1.0000   0.1210
 -12.250  -1.1125   0.03173   0.02405  -0.0431   1.0000   0.1224
 -12.000  -1.1212   0.03135   0.02367  -0.0377   1.0000   0.1240
 -11.750  -1.1248   0.03089   0.02316  -0.0331   1.0000   0.1260
 -11.500  -1.1276   0.03040   0.02256  -0.0287   1.0000   0.1282
 -11.250  -1.0999   0.02956   0.02172  -0.0298   0.9969   0.1316
 -11.000  -1.0657   0.02898   0.02118  -0.0319   0.9930   0.1357
 -10.750  -1.0352   0.02836   0.02040  -0.0334   0.9879   0.1402
 -10.500  -1.0016   0.02755   0.01970  -0.0353   0.9832   0.1446
 -10.250  -0.9646   0.02700   0.01911  -0.0378   0.9793   0.1500
 -10.000  -0.9347   0.02626   0.01835  -0.0389   0.9734   0.1551
  -9.750  -0.9010   0.02566   0.01780  -0.0407   0.9679   0.1606
  -9.500  -0.8623   0.02502   0.01708  -0.0434   0.9644   0.1672
  -9.250  -0.8357   0.02443   0.01659  -0.0437   0.9572   0.1727
  -9.000  -0.8017   0.02395   0.01599  -0.0453   0.9518   0.1797
  -8.750  -0.7623   0.02325   0.01544  -0.0480   0.9488   0.1869
  -8.500  -0.7365   0.02288   0.01498  -0.0479   0.9412   0.1937
  -8.250  -0.7027   0.02228   0.01451  -0.0494   0.9358   0.2010
  -8.000  -0.6624   0.02184   0.01398  -0.0521   0.9326   0.2097
  -7.750  -0.6194   0.02123   0.01351  -0.0553   0.9305   0.2185
  -7.500  -0.5995   0.02099   0.01317  -0.0538   0.9203   0.2258
  -7.250  -0.5615   0.02041   0.01273  -0.0559   0.9163   0.2347
  -7.000  -0.5219   0.01990   0.01219  -0.0582   0.9133   0.2449
  -6.750  -0.4970   0.01956   0.01192  -0.0576   0.9052   0.2534
  -6.500  -0.4665   0.01912   0.01146  -0.0581   0.8985   0.2634
  -6.250  -0.4304   0.01864   0.01102  -0.0595   0.8944   0.2744
  -6.000  -0.4047   0.01826   0.01068  -0.0590   0.8865   0.2845
  -5.750  -0.3773   0.01794   0.01035  -0.0587   0.8784   0.2957
  -5.500  -0.3434   0.01740   0.00988  -0.0597   0.8735   0.3075
  -5.250  -0.3213   0.01725   0.00965  -0.0584   0.8632   0.3186
  -5.000  -0.2920   0.01678   0.00929  -0.0584   0.8558   0.3304
  -4.750  -0.2621   0.01644   0.00893  -0.0585   0.8487   0.3427
  -4.500  -0.2388   0.01618   0.00872  -0.0574   0.8377   0.3539
  -4.250  -0.2071   0.01579   0.00832  -0.0578   0.8309   0.3662
  -4.000  -0.1848   0.01562   0.00817  -0.0566   0.8189   0.3777
  -3.750  -0.1548   0.01527   0.00784  -0.0566   0.8106   0.3900
  -3.500  -0.1311   0.01513   0.00768  -0.0556   0.7988   0.4028
  -3.250  -0.1023   0.01481   0.00741  -0.0555   0.7897   0.4159
  -3.000  -0.0782   0.01465   0.00728  -0.0545   0.7777   0.4297
  -2.750  -0.0498   0.01445   0.00704  -0.0543   0.7682   0.4457
  -2.500  -0.0261   0.01429   0.00698  -0.0533   0.7563   0.4611
  -2.250   0.0016   0.01411   0.00681  -0.0530   0.7468   0.4788
  -2.000   0.0254   0.01402   0.00678  -0.0520   0.7351   0.4974
  -1.750   0.0527   0.01389   0.00665  -0.0516   0.7253   0.5179
  -1.500   0.0766   0.01384   0.00666  -0.0506   0.7140   0.5387
  -1.250   0.1033   0.01376   0.00659  -0.0501   0.7044   0.5605
  -1.000   0.1277   0.01374   0.00663  -0.0492   0.6939   0.5827
  -0.750   0.1534   0.01370   0.00662  -0.0484   0.6841   0.6059
  -0.500   0.1785   0.01371   0.00667  -0.0476   0.6743   0.6285
  -0.250   0.2038   0.01367   0.00670  -0.0468   0.6640   0.6490
   0.000   0.2304   0.01369   0.00674  -0.0462   0.6548   0.6683
   0.250   0.2551   0.01369   0.00681  -0.0453   0.6448   0.6874
   0.500   0.2834   0.01375   0.00682  -0.0450   0.6367   0.7065
   0.750   0.3068   0.01379   0.00695  -0.0439   0.6265   0.7252
   1.000   0.3338   0.01384   0.00698  -0.0434   0.6179   0.7440
   1.250   0.3585   0.01392   0.00714  -0.0424   0.6081   0.7618
   1.500   0.3844   0.01399   0.00722  -0.0416   0.5985   0.7798
   1.750   0.4097   0.01410   0.00735  -0.0407   0.5889   0.7978
   2.000   0.4338   0.01418   0.00742  -0.0396   0.5783   0.8162
   2.250   0.4596   0.01434   0.00757  -0.0387   0.5685   0.8331
   2.500   0.4846   0.01449   0.00776  -0.0377   0.5587   0.8494
   2.750   0.5124   0.01472   0.00791  -0.0373   0.5505   0.8659
   3.000   0.5346   0.01488   0.00813  -0.0358   0.5410   0.8834
   3.250   0.5663   0.01516   0.00833  -0.0360   0.5324   0.8959
   3.500   0.5940   0.01542   0.00862  -0.0357   0.5232   0.9099
   3.750   0.6219   0.01566   0.00882  -0.0353   0.5145   0.9250
   4.000   0.6637   0.01603   0.00915  -0.0378   0.5052   0.9328
   4.250   0.6985   0.01632   0.00943  -0.0390   0.4954   0.9454
   4.500   0.7497   0.01671   0.00972  -0.0435   0.4859   0.9509
   4.750   0.7869   0.01695   0.00999  -0.0454   0.4758   0.9617
   5.000   0.8362   0.01724   0.01016  -0.0498   0.4661   0.9661
   5.250   0.8760   0.01745   0.01041  -0.0524   0.4556   0.9747
   5.500   0.9203   0.01768   0.01053  -0.0560   0.4458   0.9806
   5.750   0.9623   0.01785   0.01074  -0.0592   0.4344   0.9879
   6.000   1.0050   0.01807   0.01088  -0.0625   0.4239   0.9939
   6.250   1.0481   0.01824   0.01104  -0.0660   0.4123   0.9999
   6.500   1.0582   0.01839   0.01115  -0.0632   0.4044   1.0000
   6.750   1.0645   0.01851   0.01129  -0.0595   0.3960   1.0000
   7.000   1.0751   0.01873   0.01138  -0.0566   0.3884   1.0000
   7.250   1.0776   0.01887   0.01160  -0.0522   0.3800   1.0000
   7.500   1.0836   0.01907   0.01173  -0.0483   0.3722   1.0000
   7.750   1.0877   0.01930   0.01196  -0.0441   0.3642   1.0000
   8.000   1.0898   0.01951   0.01215  -0.0395   0.3561   1.0000
   8.250   1.0956   0.01980   0.01236  -0.0356   0.3485   1.0000
   8.500   1.0924   0.02000   0.01260  -0.0300   0.3407   1.0000
   8.750   1.0988   0.02034   0.01283  -0.0263   0.3330   1.0000
   9.000   1.1032   0.02071   0.01323  -0.0224   0.3248   1.0000
   9.250   1.1119   0.02113   0.01361  -0.0193   0.3166   1.0000
   9.500   1.1223   0.02164   0.01410  -0.0167   0.3085   1.0000
   9.750   1.1316   0.02215   0.01462  -0.0140   0.3001   1.0000
  10.000   1.1436   0.02276   0.01515  -0.0119   0.2923   1.0000
  10.250   1.1524   0.02337   0.01582  -0.0094   0.2840   1.0000
  10.500   1.1648   0.02406   0.01640  -0.0076   0.2765   1.0000
  10.750   1.1735   0.02479   0.01723  -0.0054   0.2685   1.0000
  11.000   1.1850   0.02557   0.01790  -0.0036   0.2613   1.0000
  11.250   1.1943   0.02644   0.01885  -0.0018   0.2539   1.0000
  11.500   1.2042   0.02734   0.01971  -0.0001   0.2471   1.0000
  11.750   1.2145   0.02832   0.02070   0.0015   0.2403   1.0000
  12.000   1.2232   0.02937   0.02177   0.0031   0.2335   1.0000
  12.250   1.2343   0.03043   0.02274   0.0044   0.2272   1.0000
  12.500   1.2414   0.03165   0.02406   0.0059   0.2208   1.0000
  12.750   1.2510   0.03282   0.02515   0.0072   0.2148   1.0000
  13.000   1.2586   0.03416   0.02655   0.0084   0.2088   1.0000
  13.250   1.2651   0.03556   0.02799   0.0096   0.2029   1.0000
  13.500   1.2759   0.03678   0.02910   0.0106   0.1973   1.0000
  13.750   1.2790   0.03851   0.03098   0.0117   0.1919   1.0000
  14.000   1.2848   0.04009   0.03256   0.0127   0.1866   1.0000
  14.250   1.2919   0.04166   0.03412   0.0135   0.1815   1.0000
  14.500   1.2946   0.04363   0.03620   0.0143   0.1763   1.0000
  14.750   1.3005   0.04535   0.03788   0.0149   0.1717   1.0000
  15.000   1.3039   0.04739   0.03998   0.0155   0.1669   1.0000
  15.250   1.3058   0.04962   0.04229   0.0159   0.1621   1.0000
  15.500   1.3126   0.05135   0.04393   0.0164   0.1577   1.0000
  15.750   1.3118   0.05401   0.04673   0.0166   0.1533   1.0000
  16.000   1.3132   0.05646   0.04924   0.0167   0.1489   1.0000
  16.250   1.3194   0.05833   0.05102   0.0170   0.1449   1.0000
  16.500   1.3164   0.06143   0.05428   0.0168   0.1407   1.0000
  16.750   1.3178   0.06401   0.05688   0.0167   0.1368   1.0000
  17.000   1.3228   0.06611   0.05893   0.0168   0.1331   1.0000
  17.250   1.3191   0.06945   0.06241   0.0164   0.1293   1.0000
  17.500   1.3205   0.07212   0.06510   0.0161   0.1258   1.0000
  17.750   1.3257   0.07424   0.06717   0.0161   0.1224   1.0000
  18.000   1.3203   0.07792   0.07101   0.0153   0.1191   1.0000
  18.250   1.3220   0.08064   0.07374   0.0148   0.1160   1.0000
  18.500   1.3318   0.08216   0.07515   0.0150   0.1131   1.0000
  18.750   1.3233   0.08638   0.07957   0.0139   0.1104   1.0000
  19.000   1.3226   0.08950   0.08275   0.0131   0.1077   1.0000
  19.250   1.3303   0.09137   0.08456   0.0128   0.1053   1.0000
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