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EPPLER 668 AIRFOIL (e668-il) Xfoil prediction polar at RE=500,000 Ncrit=5


Details Polar file
Airfoil: EPPLER 668 AIRFOIL (e668-il)
Reynolds number: 500,000
Max Cl/Cd: 113.23 at α=3.75°
Description: Mach=0 Ncrit=5
Source: Xfoil prediction
Download polar: xf-e668-il-500000-n5.txt
Download as CSV file: xf-e668-il-500000-n5.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: EPPLER 668 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
  ------ -------- --------- --------- -------- -------- --------
 -12.500  -0.1806   0.09268   0.08928  -0.1168   0.8408   0.0045
 -12.000  -0.3582   0.04895   0.04533  -0.1379   0.8365   0.0040
 -11.750  -0.3853   0.04113   0.03729  -0.1440   0.8343   0.0039
 -11.500  -0.4068   0.03648   0.03245  -0.1458   0.8320   0.0039
 -11.250  -0.4221   0.03327   0.02905  -0.1454   0.8297   0.0039
 -11.000  -0.4351   0.03061   0.02617  -0.1437   0.8277   0.0039
 -10.750  -0.4425   0.02863   0.02401  -0.1414   0.8258   0.0039
 -10.500  -0.4511   0.02691   0.02206  -0.1380   0.8238   0.0039
 -10.250  -0.4472   0.02534   0.02027  -0.1360   0.8221   0.0039
 -10.000  -0.4404   0.02371   0.01839  -0.1342   0.8205   0.0040
  -9.750  -0.4285   0.02236   0.01682  -0.1328   0.8192   0.0040
  -9.500  -0.4131   0.02128   0.01557  -0.1318   0.8182   0.0040
  -9.250  -0.3966   0.02020   0.01433  -0.1307   0.8170   0.0041
  -9.000  -0.3785   0.01921   0.01318  -0.1298   0.8156   0.0042
  -8.750  -0.3588   0.01836   0.01221  -0.1291   0.8142   0.0043
  -8.500  -0.3381   0.01757   0.01128  -0.1285   0.8129   0.0044
  -8.250  -0.3160   0.01691   0.01051  -0.1280   0.8117   0.0045
  -8.000  -0.2941   0.01619   0.00970  -0.1275   0.8104   0.0046
  -7.750  -0.2714   0.01554   0.00895  -0.1271   0.8091   0.0049
  -7.500  -0.2473   0.01503   0.00837  -0.1269   0.8078   0.0053
  -7.250  -0.2226   0.01458   0.00786  -0.1267   0.8068   0.0056
  -7.000  -0.1975   0.01415   0.00734  -0.1265   0.8058   0.0061
  -6.750  -0.1721   0.01374   0.00685  -0.1264   0.8047   0.0066
  -6.500  -0.1464   0.01337   0.00643  -0.1264   0.8036   0.0074
  -6.250  -0.1206   0.01304   0.00606  -0.1262   0.8024   0.0086
  -6.000  -0.0949   0.01271   0.00572  -0.1262   0.8011   0.0101
  -5.750  -0.0687   0.01242   0.00542  -0.1261   0.7999   0.0124
  -5.500  -0.0423   0.01216   0.00517  -0.1262   0.7986   0.0166
  -5.250  -0.0158   0.01190   0.00492  -0.1262   0.7972   0.0218
  -5.000   0.0109   0.01163   0.00468  -0.1263   0.7957   0.0291
  -4.750   0.0379   0.01138   0.00446  -0.1264   0.7943   0.0379
  -4.500   0.0650   0.01113   0.00425  -0.1266   0.7931   0.0514
  -4.250   0.0923   0.01087   0.00405  -0.1268   0.7918   0.0704
  -4.000   0.1198   0.01062   0.00387  -0.1270   0.7905   0.0935
  -3.750   0.1475   0.01039   0.00372  -0.1273   0.7892   0.1201
  -3.500   0.1754   0.01017   0.00358  -0.1276   0.7880   0.1539
  -3.250   0.2021   0.00991   0.00348  -0.1278   0.7863   0.1974
  -3.000   0.2288   0.00962   0.00338  -0.1279   0.7843   0.2503
  -2.750   0.2560   0.00936   0.00329  -0.1282   0.7822   0.3047
  -2.500   0.2836   0.00908   0.00320  -0.1285   0.7801   0.3638
  -2.250   0.3116   0.00882   0.00311  -0.1289   0.7782   0.4242
  -2.000   0.3399   0.00854   0.00302  -0.1293   0.7763   0.4923
  -1.750   0.3684   0.00828   0.00295  -0.1297   0.7745   0.5599
  -1.500   0.3969   0.00809   0.00292  -0.1300   0.7726   0.6210
  -1.250   0.4238   0.00799   0.00297  -0.1299   0.7700   0.6671
  -1.000   0.4506   0.00795   0.00305  -0.1297   0.7670   0.7027
  -0.750   0.4782   0.00795   0.00308  -0.1297   0.7642   0.7273
  -0.500   0.5065   0.00795   0.00309  -0.1298   0.7615   0.7438
  -0.250   0.5350   0.00795   0.00308  -0.1299   0.7591   0.7561
   0.000   0.5636   0.00796   0.00307  -0.1301   0.7565   0.7664
   0.250   0.5906   0.00799   0.00312  -0.1300   0.7525   0.7763
   0.500   0.6177   0.00800   0.00315  -0.1299   0.7484   0.7832
   0.750   0.6459   0.00799   0.00312  -0.1300   0.7448   0.7905
   1.000   0.6739   0.00798   0.00311  -0.1301   0.7410   0.7964
   1.250   0.7002   0.00801   0.00318  -0.1298   0.7357   0.8023
   1.500   0.7281   0.00801   0.00317  -0.1299   0.7307   0.8084
   1.750   0.7551   0.00801   0.00319  -0.1298   0.7253   0.8129
   2.000   0.7813   0.00802   0.00322  -0.1295   0.7184   0.8176
   2.250   0.8085   0.00803   0.00321  -0.1294   0.7116   0.8226
   2.500   0.8350   0.00805   0.00323  -0.1292   0.7026   0.8266
   2.750   0.8607   0.00807   0.00326  -0.1288   0.6928   0.8297
   3.000   0.8861   0.00811   0.00328  -0.1284   0.6810   0.8330
   3.250   0.9110   0.00818   0.00331  -0.1279   0.6664   0.8362
   3.500   0.9352   0.00830   0.00337  -0.1272   0.6492   0.8393
   3.750   0.9579   0.00846   0.00346  -0.1263   0.6292   0.8419
   4.000   0.9781   0.00867   0.00359  -0.1249   0.6067   0.8444
   4.250   0.9966   0.00895   0.00377  -0.1232   0.5811   0.8471
   4.500   1.0135   0.00928   0.00400  -0.1212   0.5550   0.8502
   4.750   1.0287   0.00966   0.00426  -0.1189   0.5282   0.8534
   5.250   1.0533   0.01040   0.00483  -0.1131   0.4783   0.8596
   5.500   1.0622   0.01084   0.00518  -0.1097   0.4536   0.8631
   5.750   1.0735   0.01130   0.00556  -0.1068   0.4303   0.8668
   6.250   1.0941   0.01237   0.00646  -0.1010   0.3811   0.8740
   6.500   1.1035   0.01297   0.00697  -0.0981   0.3572   0.8776
   6.750   1.1150   0.01355   0.00749  -0.0956   0.3349   0.8816
   7.000   1.1266   0.01420   0.00806  -0.0933   0.3133   0.8856
   7.250   1.1379   0.01486   0.00865  -0.0910   0.2910   0.8893
   7.500   1.1496   0.01552   0.00926  -0.0887   0.2705   0.8939
   7.750   1.1612   0.01625   0.00992  -0.0866   0.2502   0.8989
   8.000   1.1734   0.01697   0.01058  -0.0847   0.2292   0.9038
   8.250   1.1841   0.01774   0.01129  -0.0825   0.2079   0.9098
   8.750   1.2064   0.01926   0.01272  -0.0784   0.1712   0.9291
   9.000   1.2200   0.02001   0.01346  -0.0769   0.1540   0.9519
   9.500   1.2466   0.02183   0.01513  -0.0743   0.1202   1.0000
   9.750   1.2596   0.02279   0.01603  -0.0729   0.1058   1.0000
  10.250   1.2865   0.02468   0.01785  -0.0704   0.0827   1.0000
  10.500   1.2997   0.02564   0.01880  -0.0692   0.0738   1.0000
  10.750   1.3122   0.02667   0.01981  -0.0680   0.0649   1.0000
  11.000   1.3247   0.02772   0.02085  -0.0667   0.0578   1.0000
  11.250   1.3366   0.02882   0.02195  -0.0655   0.0511   1.0000
  11.500   1.3488   0.02991   0.02306  -0.0643   0.0454   1.0000
  11.750   1.3600   0.03111   0.02427  -0.0631   0.0404   1.0000
  12.000   1.3707   0.03235   0.02552  -0.0619   0.0356   1.0000
  12.250   1.3820   0.03359   0.02679  -0.0608   0.0317   1.0000
  12.500   1.3913   0.03499   0.02821  -0.0596   0.0280   1.0000
  12.750   1.4016   0.03636   0.02962  -0.0585   0.0251   1.0000
  13.000   1.4105   0.03786   0.03116  -0.0574   0.0222   1.0000
  13.250   1.4196   0.03939   0.03274  -0.0564   0.0201   1.0000
  13.500   1.4281   0.04101   0.03441  -0.0554   0.0182   1.0000
  13.750   1.4363   0.04269   0.03614  -0.0545   0.0164   1.0000
  14.000   1.4438   0.04447   0.03798  -0.0536   0.0147   1.0000
  14.250   1.4512   0.04631   0.03989  -0.0529   0.0132   1.0000
  14.500   1.4575   0.04831   0.04196  -0.0521   0.0120   1.0000
  14.750   1.4641   0.05033   0.04405  -0.0515   0.0111   1.0000
  15.000   1.4687   0.05260   0.04637  -0.0509   0.0098   1.0000
  15.250   1.4744   0.05480   0.04868  -0.0504   0.0091   1.0000
  15.500   1.4789   0.05721   0.05118  -0.0500   0.0085   1.0000
  15.750   1.4819   0.05985   0.05389  -0.0498   0.0078   1.0000
  16.000   1.4852   0.06252   0.05666  -0.0496   0.0072   1.0000
  16.250   1.4877   0.06535   0.05960  -0.0495   0.0067   1.0000
  16.500   1.4891   0.06839   0.06275  -0.0496   0.0062   1.0000
  16.750   1.4886   0.07176   0.06621  -0.0499   0.0057   1.0000
  17.000   1.4889   0.07513   0.06970  -0.0503   0.0053   1.0000
  17.250   1.4881   0.07872   0.07341  -0.0509   0.0049   1.0000
  17.500   1.4858   0.08260   0.07739  -0.0517   0.0045   1.0000
  17.750   1.4821   0.08679   0.08170  -0.0527   0.0042   1.0000
  18.000   1.4781   0.09113   0.08616  -0.0538   0.0040   1.0000
  18.250   1.4737   0.09562   0.09078  -0.0552   0.0036   1.0000
  18.500   1.4680   0.10042   0.09572  -0.0569   0.0035   1.0000
  18.750   1.4614   0.10543   0.10085  -0.0588   0.0033   1.0000
  19.000   1.4539   0.11070   0.10626  -0.0609   0.0031   1.0000
  19.250   1.4450   0.11630   0.11199  -0.0634   0.0030   1.0000
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