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NREL's S820 Airfoil (s820-nr) Xfoil prediction polar at RE=1,000,000 Ncrit=9


Details Polar file
Airfoil: NREL's S820 Airfoil (s820-nr)
Reynolds number: 1,000,000
Max Cl/Cd: 129.48 at α=5.25°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-s820-nr-1000000.txt
Download as CSV file: xf-s820-nr-1000000.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 =     1.000 e 6     Ncrit =   9.000
  
   alpha    CL        CD       CDp       CM     Top_Xtr  Bot_Xtr
  ------ -------- --------- --------- -------- -------- --------
 -11.500  -0.2736   0.08313   0.08081  -0.0982   0.8394   0.0071
 -11.250  -0.2827   0.07567   0.07329  -0.1031   0.8336   0.0070
 -11.000  -0.3001   0.06886   0.06638  -0.1069   0.8280   0.0071
 -10.750  -0.3184   0.06421   0.06167  -0.1090   0.8228   0.0070
 -10.500  -0.3339   0.05978   0.05710  -0.1099   0.8178   0.0071
 -10.250  -0.3501   0.05629   0.05350  -0.1099   0.8130   0.0070
 -10.000  -0.3652   0.05318   0.05030  -0.1093   0.8086   0.0070
  -9.750  -0.3793   0.05025   0.04723  -0.1076   0.8043   0.0071
  -9.500  -0.3915   0.04798   0.04482  -0.1055   0.8000   0.0071
  -9.250  -0.4040   0.04575   0.04248  -0.1023   0.7965   0.0071
  -9.000  -0.4133   0.04383   0.04043  -0.0987   0.7929   0.0071
  -8.750  -0.4172   0.04145   0.03787  -0.0958   0.7896   0.0071
  -8.500  -0.4184   0.03910   0.03528  -0.0930   0.7864   0.0071
  -8.250  -0.4157   0.03683   0.03280  -0.0905   0.7837   0.0071
  -8.000  -0.4256   0.03152   0.02722  -0.0874   0.7811   0.0075
  -7.750  -0.4127   0.02979   0.02538  -0.0862   0.7787   0.0076
  -7.500  -0.3980   0.02827   0.02372  -0.0851   0.7764   0.0078
  -7.250  -0.3818   0.02674   0.02204  -0.0840   0.7742   0.0081
  -7.000  -0.3637   0.02524   0.02037  -0.0830   0.7718   0.0085
  -6.750  -0.3434   0.02371   0.01866  -0.0820   0.7696   0.0090
  -6.500  -0.3190   0.02345   0.01817  -0.0810   0.7676   0.0101
  -6.250  -0.2984   0.02276   0.01723  -0.0798   0.7654   0.0103
  -5.250  -0.1932   0.01397   0.00793  -0.0784   0.7581   0.0065
  -5.000  -0.1759   0.01254   0.00637  -0.0765   0.7558   0.0054
  -4.750  -0.1552   0.01189   0.00566  -0.0754   0.7541   0.0051
  -4.500  -0.1332   0.01137   0.00510  -0.0747   0.7522   0.0050
  -4.250  -0.1108   0.01086   0.00453  -0.0740   0.7500   0.0050
  -4.000  -0.0873   0.01041   0.00404  -0.0735   0.7479   0.0051
  -3.750  -0.0627   0.01004   0.00362  -0.0732   0.7460   0.0055
  -3.500  -0.0367   0.00979   0.00333  -0.0731   0.7441   0.0063
  -3.250  -0.0103   0.00958   0.00305  -0.0731   0.7421   0.0079
  -3.000   0.0145   0.00917   0.00277  -0.0729   0.7404   0.0409
  -2.750   0.0201   0.00653   0.00194  -0.0709   0.7383   0.5453
  -2.500   0.0473   0.00639   0.00198  -0.0710   0.7364   0.6116
  -2.250   0.0756   0.00653   0.00217  -0.0711   0.7345   0.6465
  -2.000   0.1046   0.00660   0.00221  -0.0715   0.7325   0.6561
  -1.750   0.1338   0.00662   0.00220  -0.0720   0.7307   0.6596
  -1.500   0.1633   0.00664   0.00216  -0.0725   0.7289   0.6616
  -1.250   0.1927   0.00669   0.00215  -0.0731   0.7270   0.6636
  -1.000   0.2220   0.00668   0.00213  -0.0737   0.7254   0.6655
  -0.750   0.2510   0.00665   0.00210  -0.0742   0.7235   0.6677
  -0.500   0.2801   0.00663   0.00208  -0.0747   0.7215   0.6696
  -0.250   0.3093   0.00663   0.00208  -0.0752   0.7195   0.6716
   0.000   0.3386   0.00664   0.00207  -0.0757   0.7177   0.6736
   0.250   0.3679   0.00666   0.00208  -0.0763   0.7159   0.6758
   0.500   0.3972   0.00670   0.00210  -0.0769   0.7140   0.6781
   0.750   0.4265   0.00676   0.00213  -0.0774   0.7120   0.6801
   1.000   0.4553   0.00674   0.00215  -0.0779   0.7101   0.6823
   1.250   0.4841   0.00673   0.00217  -0.0784   0.7078   0.6845
   1.500   0.5129   0.00671   0.00217  -0.0788   0.7048   0.6866
   1.750   0.5416   0.00669   0.00214  -0.0792   0.7008   0.6889
   2.000   0.5696   0.00667   0.00213  -0.0794   0.6951   0.6912
   2.250   0.5976   0.00662   0.00208  -0.0796   0.6888   0.6936
   2.500   0.6260   0.00665   0.00207  -0.0800   0.6837   0.6958
   2.750   0.6537   0.00660   0.00210  -0.0802   0.6785   0.6985
   3.000   0.6817   0.00659   0.00212  -0.0805   0.6734   0.7009
   3.250   0.7097   0.00662   0.00216  -0.0808   0.6686   0.7033
   3.500   0.7376   0.00663   0.00222  -0.0810   0.6626   0.7059
   3.750   0.7648   0.00667   0.00224  -0.0811   0.6555   0.7084
   4.000   0.7925   0.00669   0.00230  -0.0814   0.6478   0.7106
   4.250   0.8193   0.00672   0.00236  -0.0814   0.6406   0.7134
   4.500   0.8459   0.00676   0.00244  -0.0814   0.6304   0.7160
   4.750   0.8723   0.00682   0.00253  -0.0814   0.6197   0.7187
   5.000   0.8972   0.00694   0.00262  -0.0811   0.6039   0.7215
   5.250   0.9206   0.00711   0.00275  -0.0804   0.5833   0.7244
   5.500   0.9409   0.00735   0.00292  -0.0792   0.5494   0.7274
   5.750   0.9492   0.00800   0.00329  -0.0758   0.4829   0.7306
   6.000   0.9525   0.00882   0.00380  -0.0714   0.4150   0.7338
   6.250   0.9552   0.00951   0.00424  -0.0669   0.3617   0.7372
   6.500   0.9571   0.01016   0.00470  -0.0624   0.3176   0.7405
   6.750   0.9616   0.01084   0.00523  -0.0585   0.2782   0.7441
   7.000   0.9673   0.01154   0.00578  -0.0549   0.2416   0.7478
   7.250   0.9748   0.01224   0.00634  -0.0519   0.2107   0.7516
   7.500   0.9839   0.01292   0.00691  -0.0492   0.1833   0.7554
   7.750   0.9940   0.01358   0.00750  -0.0468   0.1591   0.7595
   8.000   1.0044   0.01429   0.00813  -0.0445   0.1377   0.7639
   8.250   1.0171   0.01493   0.00873  -0.0426   0.1216   0.7683
   8.500   1.0272   0.01571   0.00942  -0.0405   0.1024   0.7727
   8.750   1.0414   0.01632   0.01003  -0.0390   0.0921   0.7775
   9.000   1.0541   0.01704   0.01071  -0.0373   0.0795   0.7826
   9.250   1.0681   0.01771   0.01137  -0.0359   0.0699   0.7877
   9.500   1.0816   0.01841   0.01207  -0.0344   0.0620   0.7935
   9.750   1.0952   0.01915   0.01280  -0.0330   0.0533   0.7997
  10.000   1.1089   0.01985   0.01353  -0.0317   0.0457   0.8068
  10.250   1.1222   0.02063   0.01430  -0.0303   0.0390   0.8147
  10.750   1.1468   0.02228   0.01598  -0.0275   0.0262   0.8341
  11.000   1.1596   0.02307   0.01684  -0.0262   0.0222   0.8469
  11.250   1.1697   0.02401   0.01780  -0.0246   0.0168   0.8649
  11.500   1.1797   0.02481   0.01874  -0.0227   0.0141   0.8963
  11.750   1.1968   0.02560   0.01970  -0.0226   0.0116   1.0000
  12.000   1.2091   0.02663   0.02073  -0.0216   0.0094   1.0000
  12.250   1.2219   0.02764   0.02178  -0.0206   0.0080   1.0000
  12.500   1.2345   0.02868   0.02284  -0.0197   0.0068   1.0000
  12.750   1.2463   0.02978   0.02398  -0.0187   0.0057   1.0000
  13.000   1.2560   0.03106   0.02527  -0.0177   0.0039   1.0000
  13.250   1.2657   0.03239   0.02663  -0.0166   0.0026   1.0000
  13.500   1.2753   0.03376   0.02807  -0.0157   0.0020   1.0000
  13.750   1.2817   0.03543   0.02980  -0.0145   0.0013   1.0000
  14.000   1.2914   0.03683   0.03128  -0.0137   0.0012   1.0000
  14.250   1.3009   0.03828   0.03279  -0.0129   0.0010   1.0000
  14.500   1.3056   0.04019   0.03478  -0.0119   0.0008   1.0000
  14.750   1.3140   0.04181   0.03648  -0.0112   0.0007   1.0000
  15.000   1.3170   0.04398   0.03876  -0.0103   0.0007   1.0000
  15.250   1.3160   0.04667   0.04160  -0.0093   0.0006   1.0000
  15.500   1.3216   0.04873   0.04374  -0.0089   0.0005   1.0000
  15.750   1.3253   0.05102   0.04613  -0.0084   0.0005   1.0000
  16.000   1.3248   0.05385   0.04909  -0.0080   0.0005   1.0000
  16.250   1.3276   0.05639   0.05173  -0.0079   0.0005   1.0000
  16.500   1.3254   0.05960   0.05507  -0.0077   0.0005   1.0000
  16.750   1.3211   0.06319   0.05880  -0.0078   0.0005   1.0000
  17.000   1.3209   0.06635   0.06205  -0.0082   0.0005   1.0000
  17.250   1.3168   0.07015   0.06597  -0.0087   0.0005   1.0000
  17.500   1.3116   0.07425   0.07020  -0.0095   0.0005   1.0000
  17.750   1.3013   0.07927   0.07537  -0.0108   0.0005   1.0000
  18.000   1.2885   0.08486   0.08112  -0.0125   0.0004   1.0000
  18.250   1.2750   0.09086   0.08728  -0.0147   0.0004   1.0000
  18.500   1.2716   0.09534   0.09186  -0.0165   0.0004   1.0000
  18.750   1.2536   0.10259   0.09927  -0.0197   0.0004   1.0000
  19.000   1.2400   0.10926   0.10609  -0.0230   0.0004   1.0000
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