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NREL's S820 Airfoil (s820-nr) Xfoil prediction polar at RE=500,000 Ncrit=9


Details Polar file
Airfoil: NREL's S820 Airfoil (s820-nr)
Reynolds number: 500,000
Max Cl/Cd: 105.33 at α=6.25°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-s820-nr-500000.txt
Download as CSV file: xf-s820-nr-500000.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: NREL's S820 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 =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -11.500  -0.2641   0.08877   0.08633  -0.0979   0.9214   0.0135
 -11.250  -0.2662   0.08337   0.08086  -0.1012   0.9057   0.0134
 -11.000  -0.2798   0.07535   0.07273  -0.1066   0.8923   0.0134
 -10.750  -0.2948   0.07004   0.06732  -0.1095   0.8817   0.0131
 -10.500  -0.3145   0.06505   0.06217  -0.1114   0.8724   0.0132
 -10.250  -0.3320   0.06118   0.05819  -0.1121   0.8641   0.0131
 -10.000  -0.3487   0.05787   0.05473  -0.1118   0.8574   0.0130
  -9.750  -0.3657   0.05472   0.05144  -0.1107   0.8507   0.0133
  -9.500  -0.3789   0.05227   0.04883  -0.1088   0.8449   0.0133
  -9.250  -0.3918   0.04996   0.04637  -0.1058   0.8393   0.0136
  -9.000  -0.4010   0.04835   0.04452  -0.1019   0.8342   0.0139
  -8.750  -0.4054   0.04712   0.04299  -0.0985   0.8301   0.0142
  -8.500  -0.4078   0.04527   0.04089  -0.0956   0.8264   0.0143
  -8.250  -0.4170   0.04028   0.03563  -0.0928   0.8226   0.0146
  -8.000  -0.4075   0.03719   0.03247  -0.0920   0.8195   0.0150
  -7.750  -0.3956   0.03522   0.03039  -0.0909   0.8166   0.0154
  -7.500  -0.3822   0.03349   0.02850  -0.0898   0.8138   0.0159
  -7.250  -0.3674   0.03173   0.02659  -0.0886   0.8110   0.0167
  -7.000  -0.3502   0.03013   0.02478  -0.0872   0.8082   0.0180
  -6.750  -0.3295   0.03119   0.02547  -0.0852   0.8054   0.0196
  -6.500  -0.3160   0.02626   0.02031  -0.0843   0.8032   0.0209
  -6.250  -0.2935   0.02471   0.01870  -0.0841   0.8010   0.0221
  -6.000  -0.2706   0.02364   0.01748  -0.0835   0.7987   0.0240
  -5.750  -0.2479   0.02528   0.01887  -0.0822   0.7959   0.0267
  -5.500  -0.2042   0.01783   0.01096  -0.0821   0.7944   0.0106
  -5.250  -0.1777   0.01685   0.00998  -0.0819   0.7922   0.0099
  -5.000  -0.1549   0.01568   0.00877  -0.0811   0.7900   0.0094
  -4.750  -0.1346   0.01487   0.00789  -0.0800   0.7878   0.0092
  -4.500  -0.1153   0.01418   0.00712  -0.0787   0.7858   0.0092
  -4.250  -0.0958   0.01358   0.00648  -0.0775   0.7836   0.0094
  -4.000  -0.0746   0.01310   0.00597  -0.0767   0.7810   0.0099
  -3.750  -0.0539   0.01253   0.00533  -0.0757   0.7784   0.0112
  -3.500  -0.0296   0.01220   0.00497  -0.0753   0.7761   0.0137
  -3.250  -0.0062   0.01175   0.00449  -0.0748   0.7740   0.0262
  -3.000  -0.0108   0.00883   0.00379  -0.0710   0.7717   0.6183
  -2.750   0.0161   0.00920   0.00419  -0.0706   0.7698   0.6565
  -2.500   0.0424   0.00974   0.00480  -0.0698   0.7676   0.6830
  -2.250   0.0705   0.00987   0.00492  -0.0699   0.7654   0.6889
  -2.000   0.0992   0.00986   0.00483  -0.0704   0.7631   0.6914
  -1.750   0.1282   0.00984   0.00473  -0.0709   0.7610   0.6939
  -1.500   0.1574   0.00982   0.00462  -0.0715   0.7592   0.6959
  -1.250   0.1866   0.00980   0.00456  -0.0720   0.7576   0.6976
  -1.000   0.2158   0.00985   0.00457  -0.0726   0.7559   0.6995
  -0.750   0.2436   0.00985   0.00459  -0.0729   0.7537   0.7015
  -0.500   0.2717   0.00987   0.00459  -0.0732   0.7513   0.7037
  -0.250   0.3002   0.00988   0.00458  -0.0737   0.7490   0.7060
   0.000   0.3290   0.00990   0.00457  -0.0742   0.7471   0.7083
   0.250   0.3582   0.00992   0.00455  -0.0748   0.7452   0.7107
   0.500   0.3874   0.00991   0.00454  -0.0753   0.7435   0.7127
   0.750   0.4168   0.00997   0.00459  -0.0759   0.7418   0.7147
   1.000   0.4442   0.01002   0.00468  -0.0762   0.7396   0.7169
   1.250   0.4718   0.01006   0.00476  -0.0765   0.7370   0.7193
   1.500   0.5000   0.01009   0.00481  -0.0769   0.7345   0.7219
   1.750   0.5287   0.01011   0.00482  -0.0774   0.7321   0.7244
   2.000   0.5581   0.01008   0.00479  -0.0779   0.7297   0.7267
   2.250   0.5881   0.01010   0.00480  -0.0786   0.7272   0.7290
   2.500   0.6136   0.01005   0.00483  -0.0783   0.7221   0.7316
   2.750   0.6423   0.00988   0.00468  -0.0786   0.7163   0.7343
   3.000   0.6710   0.00976   0.00454  -0.0789   0.7106   0.7371
   3.250   0.6979   0.00968   0.00449  -0.0789   0.7045   0.7399
   3.500   0.7270   0.00955   0.00438  -0.0792   0.6997   0.7423
   3.750   0.7531   0.00952   0.00443  -0.0791   0.6944   0.7448
   4.000   0.7802   0.00945   0.00442  -0.0791   0.6886   0.7476
   4.250   0.8079   0.00939   0.00437  -0.0793   0.6826   0.7507
   4.500   0.8335   0.00933   0.00439  -0.0790   0.6747   0.7541
   4.750   0.8603   0.00929   0.00438  -0.0790   0.6682   0.7570
   5.000   0.8852   0.00925   0.00444  -0.0786   0.6596   0.7599
   5.250   0.9102   0.00924   0.00451  -0.0782   0.6499   0.7631
   5.500   0.9351   0.00924   0.00455  -0.0778   0.6389   0.7666
   5.750   0.9583   0.00928   0.00460  -0.0771   0.6232   0.7700
   6.000   0.9800   0.00933   0.00470  -0.0761   0.6049   0.7731
   6.250   0.9985   0.00948   0.00484  -0.0744   0.5765   0.7766
   6.500   1.0070   0.00989   0.00505  -0.0708   0.5229   0.7809
   6.750   0.9999   0.01066   0.00549  -0.0644   0.4587   0.7856
   7.000   0.9908   0.01151   0.00612  -0.0578   0.4066   0.7903
   7.250   0.9850   0.01252   0.00690  -0.0523   0.3567   0.7957
   7.500   0.9821   0.01356   0.00773  -0.0476   0.3103   0.8009
   7.750   0.9821   0.01459   0.00859  -0.0436   0.2691   0.8061
   8.000   0.9859   0.01559   0.00944  -0.0405   0.2334   0.8120
   8.250   0.9911   0.01656   0.01032  -0.0377   0.2023   0.8176
   8.500   0.9978   0.01753   0.01119  -0.0352   0.1744   0.8241
   8.750   1.0063   0.01846   0.01204  -0.0330   0.1522   0.8310
   9.000   1.0159   0.01933   0.01288  -0.0310   0.1327   0.8387
   9.250   1.0261   0.02021   0.01374  -0.0292   0.1170   0.8470
   9.500   1.0368   0.02108   0.01459  -0.0275   0.1030   0.8570
   9.750   1.0481   0.02187   0.01542  -0.0258   0.0918   0.8686
  10.000   1.0590   0.02265   0.01628  -0.0240   0.0826   0.8843
  10.250   1.0674   0.02345   0.01716  -0.0218   0.0742   0.9133
  10.500   1.0872   0.02426   0.01805  -0.0222   0.0649   1.0000
  10.750   1.1021   0.02516   0.01897  -0.0215   0.0579   1.0000
  11.000   1.1139   0.02627   0.02004  -0.0205   0.0505   1.0000
  11.250   1.1272   0.02728   0.02101  -0.0196   0.0421   1.0000
  11.500   1.1396   0.02835   0.02211  -0.0187   0.0356   1.0000
  11.750   1.1508   0.02953   0.02327  -0.0177   0.0287   1.0000
  12.000   1.1612   0.03077   0.02446  -0.0167   0.0225   1.0000
  12.250   1.1713   0.03208   0.02578  -0.0157   0.0187   1.0000
  12.500   1.1823   0.03333   0.02706  -0.0148   0.0155   1.0000
  12.750   1.1906   0.03484   0.02858  -0.0137   0.0132   1.0000
  13.000   1.2009   0.03619   0.03000  -0.0129   0.0112   1.0000
  13.250   1.2099   0.03770   0.03155  -0.0121   0.0097   1.0000
  13.500   1.2162   0.03948   0.03341  -0.0110   0.0082   1.0000
  13.750   1.2235   0.04120   0.03519  -0.0102   0.0067   1.0000
  14.000   1.2262   0.04342   0.03752  -0.0092   0.0056   1.0000
  14.250   1.2321   0.04536   0.03955  -0.0085   0.0047   1.0000
  14.500   1.2300   0.04817   0.04246  -0.0075   0.0039   1.0000
  14.750   1.2330   0.05056   0.04497  -0.0070   0.0037   1.0000
  15.000   1.2360   0.05298   0.04751  -0.0066   0.0034   1.0000
  15.250   1.2376   0.05566   0.05028  -0.0063   0.0028   1.0000
  15.500   1.2303   0.05945   0.05419  -0.0061   0.0025   1.0000
  15.750   1.2282   0.06277   0.05765  -0.0061   0.0024   1.0000
  16.000   1.2255   0.06630   0.06133  -0.0063   0.0023   1.0000
  16.250   1.2240   0.06977   0.06492  -0.0068   0.0022   1.0000
  16.500   1.2203   0.07368   0.06898  -0.0075   0.0020   1.0000
  16.750   1.2162   0.07780   0.07324  -0.0085   0.0019   1.0000
  17.000   1.2060   0.08289   0.07849  -0.0098   0.0020   1.0000
  17.250   1.1991   0.08775   0.08349  -0.0114   0.0020   1.0000
  17.500   1.1894   0.09323   0.08912  -0.0135   0.0020   1.0000
  17.750   1.1811   0.09873   0.09477  -0.0158   0.0018   1.0000
  18.000   1.1682   0.10516   0.10135  -0.0187   0.0018   1.0000
  18.250   1.1582   0.11137   0.10769  -0.0219   0.0016   1.0000
  18.500   1.1468   0.11786   0.11436  -0.0252   0.0018   1.0000
  18.750   1.1327   0.12515   0.12180  -0.0291   0.0017   1.0000
  19.000   1.1212   0.13207   0.12885  -0.0330   0.0017   1.0000
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