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EPPLER 420 AIRFOIL (e420-il) Xfoil prediction polar at RE=1,000,000 Ncrit=9


Details Polar file
Airfoil: EPPLER 420 AIRFOIL (e420-il)
Reynolds number: 1,000,000
Max Cl/Cd: 137.37 at α=5.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-e420-il-1000000.txt
Download as CSV file: xf-e420-il-1000000.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: EPPLER 420 AIRFOIL                              
  
 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
  ------ -------- --------- --------- -------- -------- --------
 -12.750   0.3050   0.11215   0.10876  -0.1629   0.7213   0.0136
 -12.500   0.3461   0.09936   0.09589  -0.1563   0.6646   0.0137
 -12.250   0.3167   0.10745   0.10393  -0.1644   0.6953   0.0136
 -12.000   0.3253   0.10524   0.10165  -0.1647   0.6836   0.0137
 -11.750   0.3724   0.09331   0.08973  -0.1573   0.6392   0.0141
 -11.500   0.3800   0.09118   0.08757  -0.1577   0.6313   0.0142
 -11.250   0.3878   0.08910   0.08545  -0.1581   0.6238   0.0143
 -11.000   0.3960   0.08697   0.08330  -0.1585   0.6176   0.0145
 -10.750   0.4037   0.08488   0.08118  -0.1588   0.6112   0.0147
 -10.500   0.4110   0.08272   0.07899  -0.1591   0.6051   0.0149
 -10.250   0.4188   0.08048   0.07675  -0.1595   0.6002   0.0151
 -10.000   0.4261   0.07828   0.07453  -0.1598   0.5948   0.0154
  -9.750   0.4327   0.07604   0.07226  -0.1600   0.5891   0.0159
  -9.500   0.4182   0.08635   0.08241  -0.1687   0.6016   0.0153
  -9.250   0.4260   0.08430   0.08034  -0.1691   0.5960   0.0158
  -9.000   0.4340   0.08243   0.07844  -0.1693   0.5902   0.0159
  -8.750   0.4373   0.07990   0.07591  -0.1700   0.5855   0.0164
  -8.500   0.4432   0.07781   0.07383  -0.1705   0.5816   0.0164
  -8.250   0.4489   0.07574   0.07175  -0.1708   0.5770   0.0165
  -8.000   0.4542   0.07370   0.06971  -0.1709   0.5725   0.0165
  -7.750   0.4604   0.07193   0.06792  -0.1708   0.5670   0.0165
  -7.500   0.4661   0.06972   0.06573  -0.1704   0.5640   0.0167
  -7.250   0.4739   0.06817   0.06418  -0.1701   0.5600   0.0168
  -7.000   0.4824   0.06685   0.06286  -0.1694   0.5557   0.0169
  -6.750   0.4882   0.06546   0.06145  -0.1687   0.5516   0.0170
  -6.500   0.4926   0.06408   0.06008  -0.1676   0.5475   0.0172
  -6.250   0.4954   0.06264   0.05867  -0.1664   0.5452   0.0173
  -6.000   0.4956   0.06138   0.05744  -0.1645   0.5422   0.0175
  -5.750   0.4807   0.01693   0.01189  -0.2261   0.5449   0.0118
  -5.500   0.5140   0.01534   0.01003  -0.2287   0.5415   0.0118
  -5.250   0.5443   0.01439   0.00888  -0.2300   0.5378   0.0118
  -5.000   0.5732   0.01372   0.00803  -0.2306   0.5341   0.0120
  -4.750   0.6013   0.01322   0.00737  -0.2310   0.5298   0.0121
  -4.500   0.6304   0.01275   0.00680  -0.2314   0.5273   0.0123
  -4.250   0.6594   0.01234   0.00630  -0.2318   0.5249   0.0125
  -4.000   0.6878   0.01201   0.00588  -0.2319   0.5219   0.0129
  -3.750   0.7157   0.01177   0.00554  -0.2319   0.5189   0.0133
  -3.500   0.7432   0.01153   0.00521  -0.2319   0.5157   0.0138
  -3.250   0.7709   0.01128   0.00487  -0.2319   0.5122   0.0148
  -3.000   0.7986   0.01116   0.00469  -0.2319   0.5095   0.0156
  -2.750   0.8265   0.01102   0.00451  -0.2318   0.5079   0.0164
  -2.500   0.8547   0.01081   0.00426  -0.2319   0.5059   0.0176
  -2.250   0.8822   0.01071   0.00413  -0.2317   0.5038   0.0193
  -2.000   0.9098   0.01058   0.00397  -0.2316   0.5015   0.0231
  -1.750   0.9369   0.01046   0.00385  -0.2314   0.4991   0.0318
  -1.500   0.9632   0.01044   0.00381  -0.2311   0.4963   0.0433
  -1.250   0.9894   0.01047   0.00384  -0.2308   0.4932   0.0546
  -1.000   1.0163   0.01047   0.00386  -0.2306   0.4912   0.0654
  -0.750   1.0432   0.01046   0.00387  -0.2303   0.4899   0.0760
  -0.500   1.0701   0.01044   0.00390  -0.2301   0.4884   0.0882
  -0.250   1.0968   0.01046   0.00394  -0.2299   0.4868   0.0999
   0.000   1.1233   0.01049   0.00400  -0.2296   0.4850   0.1115
   0.250   1.1494   0.01054   0.00406  -0.2293   0.4829   0.1228
   0.500   1.1750   0.01062   0.00412  -0.2288   0.4809   0.1317
   0.750   1.2006   0.01070   0.00422  -0.2284   0.4788   0.1433
   1.000   1.2259   0.01082   0.00432  -0.2279   0.4764   0.1526
   1.250   1.2520   0.01099   0.00448  -0.2276   0.4737   0.1620
   1.500   1.2778   0.01104   0.00455  -0.2272   0.4728   0.1716
   1.750   1.3033   0.01110   0.00464  -0.2268   0.4716   0.1806
   2.000   1.3288   0.01117   0.00474  -0.2264   0.4702   0.1901
   2.250   1.3541   0.01125   0.00484  -0.2259   0.4685   0.1990
   2.500   1.3793   0.01133   0.00494  -0.2255   0.4669   0.2075
   2.750   1.4043   0.01143   0.00505  -0.2250   0.4654   0.2170
   3.000   1.4290   0.01155   0.00517  -0.2245   0.4637   0.2246
   3.250   1.4534   0.01167   0.00531  -0.2240   0.4619   0.2348
   3.500   1.4774   0.01183   0.00546  -0.2233   0.4598   0.2433
   3.750   1.5020   0.01203   0.00566  -0.2229   0.4572   0.2544
   4.000   1.5269   0.01218   0.00583  -0.2225   0.4555   0.2648
   4.250   1.5511   0.01228   0.00598  -0.2219   0.4546   0.2778
   4.500   1.5751   0.01238   0.00613  -0.2214   0.4534   0.2928
   4.750   1.5990   0.01248   0.00629  -0.2208   0.4520   0.3114
   5.000   1.6227   0.01259   0.00647  -0.2202   0.4503   0.3349
   5.250   1.6464   0.01270   0.00665  -0.2197   0.4487   0.3735
   5.500   1.6691   0.01215   0.00704  -0.2191   0.4471   1.0000
   5.750   1.6919   0.01234   0.00721  -0.2184   0.4453   1.0000
   6.000   1.7140   0.01256   0.00741  -0.2176   0.4434   1.0000
   6.250   1.7359   0.01283   0.00765  -0.2167   0.4410   1.0000
   6.500   1.7593   0.01311   0.00791  -0.2162   0.4385   1.0000
   6.750   1.7808   0.01327   0.00811  -0.2153   0.4373   1.0000
   7.000   1.8024   0.01345   0.00831  -0.2144   0.4358   1.0000
   7.250   1.8241   0.01364   0.00853  -0.2135   0.4339   1.0000
   7.500   1.8454   0.01384   0.00875  -0.2126   0.4319   1.0000
   7.750   1.8657   0.01407   0.00900  -0.2116   0.4298   1.0000
   8.000   1.8852   0.01434   0.00928  -0.2104   0.4275   1.0000
   8.250   1.9039   0.01468   0.00960  -0.2091   0.4247   1.0000
   8.500   1.9237   0.01505   0.00995  -0.2081   0.4215   1.0000
   8.750   1.9431   0.01529   0.01025  -0.2070   0.4200   1.0000
   9.000   1.9626   0.01555   0.01056  -0.2060   0.4179   1.0000
   9.250   1.9820   0.01584   0.01088  -0.2049   0.4156   1.0000
   9.500   2.0002   0.01617   0.01124  -0.2037   0.4129   1.0000
   9.750   2.0167   0.01659   0.01167  -0.2022   0.4102   1.0000
  10.000   2.0321   0.01710   0.01217  -0.2006   0.4070   1.0000
  10.250   2.0489   0.01754   0.01265  -0.1993   0.4044   1.0000
  10.500   2.0670   0.01790   0.01308  -0.1982   0.4020   1.0000
  10.750   2.0846   0.01831   0.01354  -0.1970   0.3991   1.0000
  11.000   2.0993   0.01886   0.01411  -0.1955   0.3958   1.0000
  11.250   2.1119   0.01953   0.01479  -0.1937   0.3922   1.0000
  11.500   2.1240   0.02026   0.01555  -0.1919   0.3886   1.0000
  11.750   2.1411   0.02076   0.01611  -0.1909   0.3855   1.0000
  12.000   2.1545   0.02145   0.01684  -0.1894   0.3814   1.0000
  12.250   2.1646   0.02235   0.01776  -0.1875   0.3771   1.0000
  12.500   2.1732   0.02339   0.01883  -0.1856   0.3727   1.0000
  12.750   2.1878   0.02411   0.01961  -0.1844   0.3686   1.0000
  13.000   2.1961   0.02524   0.02077  -0.1826   0.3633   1.0000
  13.250   2.1995   0.02673   0.02228  -0.1803   0.3580   1.0000
  13.500   2.2114   0.02772   0.02333  -0.1790   0.3531   1.0000
  13.750   2.2146   0.02936   0.02499  -0.1770   0.3466   1.0000
  14.000   2.2171   0.03112   0.02678  -0.1750   0.3405   1.0000
  14.250   2.2201   0.03291   0.02860  -0.1732   0.3332   1.0000
  14.500   2.2165   0.03531   0.03102  -0.1709   0.3262   1.0000
  14.750   2.2147   0.03768   0.03342  -0.1690   0.3178   1.0000
  15.000   2.2072   0.04066   0.03642  -0.1669   0.3099   1.0000
  15.250   2.1966   0.04404   0.03982  -0.1648   0.3003   1.0000
  15.500   2.1860   0.04758   0.04339  -0.1629   0.2909   1.0000
  15.750   2.1677   0.05207   0.04788  -0.1608   0.2812   1.0000
  16.000   2.1512   0.05652   0.05236  -0.1591   0.2711   1.0000
  16.250   2.1336   0.06127   0.05714  -0.1577   0.2615   1.0000
  16.500   2.1088   0.06704   0.06293  -0.1562   0.2519   1.0000
  16.750   2.0925   0.07192   0.06784  -0.1553   0.2425   1.0000
  17.000   2.0747   0.07711   0.07306  -0.1545   0.2339   1.0000
  17.250   2.0531   0.08294   0.07890  -0.1539   0.2249   1.0000
  17.500   2.0403   0.08770   0.08370  -0.1536   0.2170   1.0000
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