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NACA 2421 (naca2421-il) Xfoil prediction polar at RE=100,000 Ncrit=9


Details Polar file
Airfoil: NACA 2421 (naca2421-il)
Reynolds number: 100,000
Max Cl/Cd: 39.52 at α=8.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-naca2421-il-100000.txt
Download as CSV file: xf-naca2421-il-100000.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 =     0.100 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -13.750  -0.8012   0.06772   0.06072  -0.0779   1.0000   0.1523
 -13.500  -0.8857   0.05969   0.05242  -0.0762   1.0000   0.1517
 -13.250  -0.9439   0.05559   0.04809  -0.0711   1.0000   0.1518
 -13.000  -0.9933   0.05311   0.04543  -0.0638   1.0000   0.1521
 -12.750  -1.0387   0.05145   0.04361  -0.0552   1.0000   0.1524
 -12.500  -1.0748   0.04954   0.04147  -0.0477   1.0000   0.1532
 -12.250  -1.0415   0.04887   0.04106  -0.0484   1.0000   0.1564
 -12.000  -1.0440   0.04788   0.04006  -0.0446   1.0000   0.1586
 -11.750  -1.0545   0.04660   0.03869  -0.0399   1.0000   0.1608
 -11.500  -1.0705   0.04505   0.03694  -0.0345   1.0000   0.1630
 -11.250  -1.0886   0.04338   0.03496  -0.0287   1.0000   0.1651
 -11.000  -1.0823   0.04211   0.03370  -0.0261   1.0000   0.1680
 -10.750  -1.0704   0.04149   0.03316  -0.0241   1.0000   0.1711
 -10.500  -1.0668   0.04056   0.03216  -0.0210   1.0000   0.1745
 -10.250  -1.0691   0.03933   0.03066  -0.0171   1.0000   0.1781
 -10.000  -1.0619   0.03820   0.02948  -0.0146   1.0000   0.1817
  -9.750  -1.0473   0.03772   0.02912  -0.0129   1.0000   0.1855
  -9.500  -1.0396   0.03695   0.02825  -0.0104   1.0000   0.1899
  -9.250  -1.0361   0.03591   0.02689  -0.0074   1.0000   0.1946
  -9.000  -1.0180   0.03544   0.02666  -0.0063   1.0000   0.1989
  -8.750  -1.0038   0.03493   0.02612  -0.0048   0.9995   0.2041
  -8.500  -0.9652   0.03417   0.02523  -0.0078   0.9930   0.2121
  -8.250  -0.9267   0.03389   0.02502  -0.0105   0.9857   0.2200
  -8.000  -0.8870   0.03331   0.02434  -0.0136   0.9790   0.2288
  -7.750  -0.8535   0.03301   0.02408  -0.0153   0.9705   0.2372
  -7.500  -0.8124   0.03251   0.02353  -0.0184   0.9640   0.2467
  -7.250  -0.7830   0.03219   0.02321  -0.0192   0.9545   0.2556
  -7.000  -0.7411   0.03172   0.02275  -0.0224   0.9482   0.2658
  -6.750  -0.7146   0.03139   0.02238  -0.0226   0.9379   0.2754
  -6.500  -0.6722   0.03093   0.02198  -0.0257   0.9315   0.2862
  -6.250  -0.6475   0.03062   0.02156  -0.0255   0.9212   0.2969
  -6.000  -0.6064   0.03017   0.02126  -0.0282   0.9144   0.3083
  -5.750  -0.5792   0.02980   0.02077  -0.0284   0.9047   0.3205
  -5.500  -0.5423   0.02944   0.02056  -0.0302   0.8968   0.3331
  -5.250  -0.4952   0.02895   0.02014  -0.0337   0.8923   0.3484
  -5.000  -0.4802   0.02877   0.01983  -0.0317   0.8791   0.3609
  -4.750  -0.4342   0.02826   0.01951  -0.0348   0.8740   0.3768
  -4.500  -0.4129   0.02805   0.01936  -0.0337   0.8626   0.3891
  -4.250  -0.3736   0.02759   0.01890  -0.0357   0.8558   0.4060
  -4.000  -0.3239   0.02705   0.01838  -0.0393   0.8521   0.4248
  -3.750  -0.3096   0.02700   0.01850  -0.0368   0.8384   0.4358
  -3.500  -0.2628   0.02642   0.01798  -0.0398   0.8339   0.4542
  -3.250  -0.2139   0.02574   0.01735  -0.0429   0.8306   0.4735
  -3.000  -0.2017   0.02582   0.01747  -0.0401   0.8162   0.4875
  -2.750  -0.1571   0.02518   0.01693  -0.0423   0.8118   0.5069
  -2.500  -0.1363   0.02512   0.01696  -0.0408   0.8004   0.5227
  -2.250  -0.0999   0.02464   0.01655  -0.0416   0.7935   0.5432
  -2.000  -0.0558   0.02398   0.01597  -0.0435   0.7893   0.5662
  -1.750  -0.0415   0.02412   0.01617  -0.0409   0.7761   0.5855
  -1.500  -0.0026   0.02361   0.01576  -0.0418   0.7703   0.6102
  -1.250   0.0255   0.02346   0.01571  -0.0411   0.7618   0.6339
  -1.000   0.0506   0.02337   0.01571  -0.0399   0.7519   0.6574
  -0.750   0.0918   0.02290   0.01529  -0.0410   0.7467   0.6826
  -0.500   0.1065   0.02318   0.01567  -0.0383   0.7343   0.7040
  -0.250   0.1427   0.02289   0.01541  -0.0386   0.7274   0.7274
   0.000   0.1699   0.02295   0.01551  -0.0376   0.7190   0.7492
   0.250   0.1932   0.02308   0.01568  -0.0361   0.7088   0.7705
   0.500   0.2333   0.02284   0.01540  -0.0369   0.7029   0.7920
   0.750   0.2512   0.02337   0.01603  -0.0345   0.6906   0.8089
   1.000   0.2917   0.02333   0.01595  -0.0354   0.6833   0.8261
   1.250   0.3178   0.02371   0.01634  -0.0345   0.6738   0.8439
   1.500   0.3488   0.02386   0.01647  -0.0342   0.6644   0.8621
   1.750   0.4021   0.02401   0.01651  -0.0377   0.6566   0.8739
   2.000   0.4324   0.02446   0.01700  -0.0378   0.6449   0.8890
   2.250   0.4813   0.02432   0.01669  -0.0407   0.6374   0.9042
   2.500   0.5319   0.02472   0.01712  -0.0447   0.6230   0.9129
   2.750   0.5826   0.02466   0.01693  -0.0483   0.6129   0.9261
   3.000   0.6387   0.02485   0.01709  -0.0536   0.6000   0.9360
   3.250   0.6900   0.02496   0.01712  -0.0579   0.5895   0.9486
   3.500   0.7375   0.02503   0.01716  -0.0617   0.5781   0.9623
   3.750   0.7920   0.02510   0.01718  -0.0671   0.5668   0.9731
   4.000   0.8455   0.02497   0.01697  -0.0723   0.5555   0.9837
   4.250   0.8945   0.02506   0.01707  -0.0770   0.5437   0.9946
   4.500   0.9336   0.02491   0.01682  -0.0797   0.5337   1.0000
   4.750   0.9441   0.02515   0.01707  -0.0774   0.5247   1.0000
   5.000   0.9560   0.02527   0.01717  -0.0752   0.5156   1.0000
   5.250   0.9756   0.02531   0.01709  -0.0740   0.5077   1.0000
   5.500   0.9784   0.02569   0.01756  -0.0703   0.4979   1.0000
   5.750   1.0013   0.02564   0.01733  -0.0695   0.4898   1.0000
   6.000   1.0023   0.02612   0.01792  -0.0653   0.4802   1.0000
   6.250   1.0194   0.02618   0.01789  -0.0634   0.4713   1.0000
   6.500   1.0279   0.02654   0.01825  -0.0603   0.4623   1.0000
   6.750   1.0385   0.02675   0.01843  -0.0573   0.4529   1.0000
   7.000   1.0542   0.02698   0.01858  -0.0552   0.4440   1.0000
   7.250   1.0587   0.02732   0.01896  -0.0512   0.4343   1.0000
   7.500   1.0805   0.02747   0.01896  -0.0500   0.4255   1.0000
   7.750   1.0798   0.02795   0.01952  -0.0452   0.4158   1.0000
   8.000   1.1072   0.02805   0.01943  -0.0449   0.4070   1.0000
   8.250   1.1017   0.02867   0.02018  -0.0394   0.3976   1.0000
   8.500   1.1354   0.02873   0.01998  -0.0402   0.3886   1.0000
   8.750   1.1242   0.02949   0.02093  -0.0338   0.3798   1.0000
   9.000   1.1518   0.02964   0.02090  -0.0336   0.3709   1.0000
   9.250   1.1489   0.03042   0.02179  -0.0287   0.3625   1.0000
   9.500   1.1680   0.03073   0.02201  -0.0272   0.3537   1.0000
   9.750   1.1764   0.03142   0.02271  -0.0243   0.3457   1.0000
  10.000   1.1845   0.03199   0.02329  -0.0213   0.3372   1.0000
  10.250   1.2065   0.03248   0.02367  -0.0204   0.3291   1.0000
  10.500   1.1990   0.03334   0.02466  -0.0152   0.3216   1.0000
  10.750   1.2380   0.03354   0.02460  -0.0169   0.3127   1.0000
  11.000   1.2179   0.03473   0.02603  -0.0102   0.3063   1.0000
  11.250   1.2355   0.03517   0.02638  -0.0088   0.2982   1.0000
  11.500   1.2410   0.03613   0.02737  -0.0061   0.2910   1.0000
  11.750   1.2404   0.03717   0.02848  -0.0028   0.2837   1.0000
  12.000   1.2665   0.03756   0.02871  -0.0027   0.2760   1.0000
  12.250   1.2518   0.03924   0.03061   0.0018   0.2697   1.0000
  12.500   1.2819   0.03937   0.03052   0.0015   0.2618   1.0000
  12.750   1.2694   0.04128   0.03262   0.0053   0.2560   1.0000
  13.000   1.2731   0.04250   0.03388   0.0073   0.2493   1.0000
  13.250   1.2935   0.04321   0.03447   0.0078   0.2425   1.0000
  13.500   1.2772   0.04559   0.03707   0.0110   0.2369   1.0000
  13.750   1.3168   0.04531   0.03649   0.0102   0.2292   1.0000
  14.000   1.2939   0.04828   0.03974   0.0135   0.2245   1.0000
  14.250   1.2869   0.05051   0.04210   0.0154   0.2189   1.0000
  14.500   1.3224   0.05046   0.04180   0.0150   0.2119   1.0000
  14.750   1.2906   0.05441   0.04607   0.0177   0.2079   1.0000
  15.000   1.2895   0.05652   0.04824   0.0188   0.2025   1.0000
  15.250   1.3162   0.05694   0.04849   0.0189   0.1964   1.0000
  15.500   1.2773   0.06209   0.05398   0.0206   0.1929   1.0000
  15.750   1.2655   0.06540   0.05741   0.0212   0.1884   1.0000
  16.000   1.3040   0.06460   0.05638   0.0215   0.1823   1.0000
  16.250   1.2476   0.07224   0.06443   0.0217   0.1798   1.0000
  16.750   1.2896   0.07326   0.06525   0.0225   0.1696   1.0000
  17.000   1.1924   0.08678   0.07933   0.0200   0.1684   1.0000
  17.250   0.7133   0.19561   0.18902  -0.0284   0.1980   1.0000
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