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EPPLER 428 AIRFOIL (e428-il) Xfoil prediction polar at RE=500,000 Ncrit=5


Details Polar file
Airfoil: EPPLER 428 AIRFOIL (e428-il)
Reynolds number: 500,000
Max Cl/Cd: 73.17 at α=7.75°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-e428-il-500000-n5.txt
Download as CSV file: xf-e428-il-500000-n5.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: EPPLER 428 AIRFOIL                              
  
 1 1 Reynolds number fixed          Mach number fixed         
  
 xtrf =   1.000 (top)        1.000 (bottom)  
 Mach =   0.000     Re =     0.500 e 6     Ncrit =   5.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -15.250  -1.0193   0.08640   0.08222  -0.0070   1.0000   0.0090
 -15.000  -1.0337   0.08042   0.07616  -0.0103   1.0000   0.0090
 -14.750  -1.0516   0.07404   0.06969  -0.0137   1.0000   0.0090
 -14.500  -1.0702   0.06752   0.06307  -0.0174   1.0000   0.0090
 -14.250  -1.0929   0.06034   0.05577  -0.0215   1.0000   0.0090
 -14.000  -1.1075   0.05417   0.04947  -0.0251   1.0000   0.0089
 -13.750  -1.1263   0.04714   0.04230  -0.0298   1.0000   0.0090
 -13.500  -1.1409   0.04091   0.03590  -0.0344   1.0000   0.0090
 -13.250  -1.1520   0.03596   0.03080  -0.0379   1.0000   0.0090
 -13.000  -1.1620   0.03233   0.02703  -0.0394   1.0000   0.0091
 -12.750  -1.1679   0.03011   0.02469  -0.0385   1.0000   0.0092
 -12.500  -1.1697   0.02844   0.02293  -0.0364   1.0000   0.0093
 -12.250  -1.1615   0.02705   0.02145  -0.0351   1.0000   0.0094
 -12.000  -1.1504   0.02576   0.02007  -0.0339   1.0000   0.0096
 -11.750  -1.1364   0.02461   0.01882  -0.0329   1.0000   0.0098
 -11.500  -1.1205   0.02355   0.01767  -0.0319   1.0000   0.0099
 -11.250  -1.1033   0.02255   0.01659  -0.0310   1.0000   0.0101
 -11.000  -1.0847   0.02164   0.01558  -0.0302   1.0000   0.0103
 -10.750  -1.0651   0.02078   0.01464  -0.0294   1.0000   0.0105
 -10.500  -1.0445   0.01999   0.01377  -0.0287   1.0000   0.0107
 -10.250  -1.0230   0.01927   0.01297  -0.0280   1.0000   0.0109
 -10.000  -1.0013   0.01855   0.01217  -0.0273   1.0000   0.0111
  -9.750  -0.9796   0.01778   0.01132  -0.0266   1.0000   0.0114
  -9.500  -0.9571   0.01711   0.01058  -0.0259   1.0000   0.0118
  -9.250  -0.9339   0.01651   0.00993  -0.0252   1.0000   0.0123
  -9.000  -0.9103   0.01597   0.00932  -0.0246   1.0000   0.0128
  -8.750  -0.8863   0.01548   0.00877  -0.0240   1.0000   0.0134
  -8.500  -0.8626   0.01494   0.00819  -0.0233   1.0000   0.0143
  -8.250  -0.8388   0.01440   0.00762  -0.0227   1.0000   0.0161
  -7.750  -0.7938   0.01290   0.00633  -0.0212   1.0000   0.0461
  -7.500  -0.7693   0.01251   0.00595  -0.0205   1.0000   0.0530
  -7.250  -0.7446   0.01215   0.00560  -0.0199   1.0000   0.0591
  -7.000  -0.7201   0.01179   0.00525  -0.0192   1.0000   0.0652
  -6.750  -0.6956   0.01142   0.00493  -0.0185   1.0000   0.0729
  -6.500  -0.6713   0.01107   0.00464  -0.0178   1.0000   0.0845
  -6.250  -0.6467   0.01076   0.00438  -0.0171   1.0000   0.0968
  -6.000  -0.6220   0.01048   0.00414  -0.0164   1.0000   0.1064
  -5.750  -0.5973   0.01022   0.00392  -0.0157   1.0000   0.1146
  -5.500  -0.5658   0.00998   0.00371  -0.0164   0.9964   0.1240
  -5.250  -0.5315   0.00975   0.00351  -0.0177   0.9888   0.1341
  -5.000  -0.4958   0.00952   0.00333  -0.0192   0.9811   0.1454
  -4.750  -0.4602   0.00930   0.00317  -0.0207   0.9700   0.1575
  -4.500  -0.4239   0.00913   0.00302  -0.0223   0.9545   0.1670
  -4.250  -0.3864   0.00897   0.00287  -0.0241   0.9313   0.1765
  -4.000  -0.3512   0.00885   0.00270  -0.0254   0.8937   0.1850
  -3.750  -0.3236   0.00885   0.00256  -0.0248   0.8475   0.1924
  -3.500  -0.2978   0.00886   0.00244  -0.0240   0.8079   0.1984
  -3.250  -0.2716   0.00887   0.00233  -0.0233   0.7746   0.2060
  -3.000  -0.2451   0.00886   0.00223  -0.0228   0.7446   0.2137
  -2.750  -0.2185   0.00886   0.00213  -0.0222   0.7140   0.2222
  -2.250  -0.1648   0.00888   0.00195  -0.0213   0.6526   0.2349
  -2.000  -0.1375   0.00889   0.00187  -0.0209   0.6282   0.2411
  -1.750  -0.1100   0.00887   0.00180  -0.0206   0.6059   0.2474
  -1.500  -0.0826   0.00888   0.00174  -0.0203   0.5811   0.2547
  -1.250  -0.0551   0.00889   0.00168  -0.0200   0.5578   0.2624
  -1.000  -0.0277   0.00889   0.00163  -0.0197   0.5336   0.2718
  -0.750  -0.0003   0.00891   0.00159  -0.0193   0.5064   0.2811
  -0.500   0.0270   0.00895   0.00157  -0.0190   0.4789   0.2924
  -0.250   0.0543   0.00895   0.00155  -0.0188   0.4535   0.3091
   0.000   0.0814   0.00896   0.00154  -0.0185   0.4255   0.3303
   0.250   0.1083   0.00899   0.00155  -0.0182   0.3920   0.3539
   0.500   0.1351   0.00906   0.00157  -0.0179   0.3521   0.3805
   0.750   0.1616   0.00914   0.00161  -0.0175   0.3131   0.4152
   1.000   0.1883   0.00919   0.00167  -0.0172   0.2838   0.4527
   1.250   0.2152   0.00924   0.00174  -0.0169   0.2631   0.4867
   1.500   0.2422   0.00929   0.00183  -0.0166   0.2472   0.5189
   1.750   0.2693   0.00932   0.00192  -0.0162   0.2346   0.5511
   2.000   0.2963   0.00935   0.00202  -0.0159   0.2246   0.5852
   2.500   0.3503   0.00942   0.00223  -0.0151   0.2085   0.6473
   2.750   0.3773   0.00946   0.00234  -0.0147   0.2013   0.6755
   3.000   0.4040   0.00952   0.00247  -0.0143   0.1940   0.7063
   3.250   0.4306   0.00954   0.00260  -0.0137   0.1877   0.7376
   3.500   0.4568   0.00960   0.00273  -0.0132   0.1811   0.7687
   3.750   0.4825   0.00962   0.00287  -0.0124   0.1757   0.8060
   4.000   0.5077   0.00963   0.00302  -0.0115   0.1704   0.8486
   4.250   0.5336   0.00968   0.00316  -0.0108   0.1644   0.8987
   4.500   0.5788   0.00977   0.00333  -0.0142   0.1580   0.9669
   4.750   0.6133   0.00996   0.00349  -0.0155   0.1525   1.0000
   5.000   0.6397   0.01016   0.00366  -0.0150   0.1474   1.0000
   5.250   0.6664   0.01032   0.00383  -0.0146   0.1431   1.0000
   5.500   0.6930   0.01052   0.00401  -0.0142   0.1390   1.0000
   5.750   0.7194   0.01075   0.00421  -0.0138   0.1349   1.0000
   6.000   0.7461   0.01093   0.00441  -0.0134   0.1314   1.0000
   6.250   0.7726   0.01114   0.00461  -0.0130   0.1261   1.0000
   6.500   0.7988   0.01139   0.00483  -0.0126   0.1203   1.0000
   6.750   0.8254   0.01160   0.00505  -0.0122   0.1155   1.0000
   7.000   0.8515   0.01186   0.00529  -0.0118   0.1100   1.0000
   7.250   0.8777   0.01211   0.00555  -0.0114   0.1048   1.0000
   7.500   0.9035   0.01240   0.00582  -0.0110   0.0977   1.0000
   7.750   0.9292   0.01270   0.00610  -0.0105   0.0905   1.0000
   8.000   0.9546   0.01305   0.00642  -0.0101   0.0828   1.0000
   8.250   0.9796   0.01343   0.00678  -0.0096   0.0756   1.0000
   8.500   1.0047   0.01380   0.00714  -0.0091   0.0696   1.0000
   8.750   1.0292   0.01423   0.00755  -0.0085   0.0641   1.0000
   9.000   1.0537   0.01466   0.00798  -0.0080   0.0596   1.0000
   9.250   1.0780   0.01510   0.00843  -0.0074   0.0559   1.0000
   9.500   1.1022   0.01552   0.00888  -0.0068   0.0527   1.0000
   9.750   1.1257   0.01603   0.00940  -0.0062   0.0497   1.0000
  10.000   1.1498   0.01644   0.00986  -0.0056   0.0471   1.0000
  10.250   1.1726   0.01699   0.01041  -0.0049   0.0432   1.0000
  10.500   1.1957   0.01748   0.01094  -0.0042   0.0388   1.0000
  10.750   1.2179   0.01806   0.01153  -0.0035   0.0327   1.0000
  11.000   1.2377   0.01889   0.01230  -0.0026   0.0238   1.0000
  11.250   1.2569   0.01974   0.01314  -0.0016   0.0207   1.0000
  11.500   1.2762   0.02053   0.01399  -0.0006   0.0192   1.0000
  11.750   1.2953   0.02129   0.01482   0.0005   0.0183   1.0000
  12.000   1.3129   0.02215   0.01574   0.0016   0.0174   1.0000
  12.250   1.3287   0.02310   0.01678   0.0029   0.0167   1.0000
  12.500   1.3440   0.02403   0.01778   0.0043   0.0162   1.0000
  12.750   1.3584   0.02493   0.01878   0.0057   0.0158   1.0000
  13.000   1.3707   0.02591   0.01986   0.0073   0.0154   1.0000
  13.250   1.3775   0.02696   0.02101   0.0096   0.0151   1.0000
  13.500   1.3814   0.02815   0.02230   0.0121   0.0148   1.0000
  13.750   1.3827   0.02961   0.02385   0.0142   0.0146   1.0000
  14.000   1.3814   0.03146   0.02581   0.0157   0.0144   1.0000
  14.250   1.3780   0.03378   0.02825   0.0164   0.0142   1.0000
  14.500   1.3728   0.03668   0.03127   0.0162   0.0141   1.0000
  14.750   1.3651   0.04030   0.03503   0.0151   0.0140   1.0000
  15.000   1.3510   0.04524   0.04012   0.0128   0.0138   1.0000
  15.250   1.3334   0.05122   0.04627   0.0095   0.0137   1.0000
  15.500   1.3148   0.05779   0.05301   0.0056   0.0137   1.0000
  15.750   1.2887   0.06593   0.06133   0.0008   0.0137   1.0000
  16.000   1.2610   0.07461   0.07019  -0.0041   0.0138   1.0000
  16.250   1.2282   0.08430   0.08004  -0.0095   0.0139   1.0000
  16.500   1.1999   0.09318   0.08908  -0.0144   0.0140   1.0000
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