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NREL's S821 Airfoil (s821-nr) Xfoil prediction polar at RE=1,000,000 Ncrit=9


Details Polar file
Airfoil: NREL's S821 Airfoil (s821-nr)
Reynolds number: 1,000,000
Max Cl/Cd: 87.55 at α=6.5°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-s821-nr-1000000.txt
Download as CSV file: xf-s821-nr-1000000.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: NREL's S821 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
  ------ -------- --------- --------- -------- -------- --------
 -16.750  -1.0796   0.08612   0.08273  -0.0501   1.0000   0.1738
 -16.500  -1.0773   0.08405   0.08066  -0.0505   1.0000   0.1749
 -16.250  -1.0776   0.08161   0.07821  -0.0510   1.0000   0.1759
 -16.000  -1.0780   0.07921   0.07579  -0.0515   1.0000   0.1768
 -15.750  -1.0831   0.07624   0.07279  -0.0522   1.0000   0.1778
 -15.500  -1.1034   0.07155   0.06804  -0.0536   1.0000   0.1792
 -15.250  -1.1311   0.06615   0.06254  -0.0551   1.0000   0.1806
 -15.000  -1.1569   0.06113   0.05741  -0.0564   1.0000   0.1817
 -14.750  -1.1735   0.05726   0.05345  -0.0573   1.0000   0.1825
 -14.500  -1.1882   0.05369   0.04980  -0.0579   1.0000   0.1830
 -14.250  -1.2006   0.05056   0.04659  -0.0583   1.0000   0.1836
 -14.000  -1.1975   0.04929   0.04531  -0.0575   1.0000   0.1848
 -13.750  -1.1845   0.04780   0.04382  -0.0588   0.9994   0.1859
 -13.500  -1.1641   0.04601   0.04202  -0.0619   0.9977   0.1867
 -13.250  -1.1473   0.04388   0.03987  -0.0651   0.9957   0.1875
 -13.000  -1.1286   0.04200   0.03795  -0.0683   0.9939   0.1883
 -12.750  -1.1076   0.04031   0.03624  -0.0715   0.9923   0.1890
 -12.500  -1.0871   0.03843   0.03432  -0.0751   0.9911   0.1898
 -12.250  -1.0632   0.03691   0.03276  -0.0788   0.9902   0.1905
 -12.000  -1.0621   0.03491   0.03072  -0.0787   0.9853   0.1912
 -11.750  -1.0457   0.03323   0.02900  -0.0811   0.9825   0.1919
 -11.500  -1.0252   0.03162   0.02736  -0.0840   0.9803   0.1925
 -11.250  -1.0018   0.03007   0.02576  -0.0874   0.9785   0.1932
 -11.000  -0.9754   0.02865   0.02429  -0.0910   0.9771   0.1937
 -10.750  -0.9469   0.02735   0.02294  -0.0947   0.9760   0.1942
 -10.500  -0.9415   0.02592   0.02147  -0.0944   0.9701   0.1945
 -10.250  -0.9229   0.02475   0.02027  -0.0957   0.9661   0.1952
 -10.000  -0.8990   0.02361   0.01913  -0.0978   0.9636   0.1965
  -9.750  -0.8712   0.02247   0.01799  -0.1007   0.9617   0.1975
  -9.500  -0.8415   0.02132   0.01683  -0.1040   0.9603   0.1984
  -9.250  -0.8427   0.01996   0.01544  -0.1021   0.9513   0.1991
  -9.000  -0.8134   0.01886   0.01433  -0.1049   0.9483   0.1998
  -8.750  -0.7788   0.01792   0.01337  -0.1083   0.9465   0.2006
  -8.500  -0.7418   0.01706   0.01249  -0.1120   0.9453   0.2014
  -8.250  -0.7028   0.01627   0.01169  -0.1159   0.9444   0.2022
  -8.000  -0.6621   0.01556   0.01096  -0.1199   0.9436   0.2031
  -7.750  -0.6536   0.01490   0.01027  -0.1177   0.9333   0.2037
  -7.500  -0.6192   0.01440   0.00975  -0.1198   0.9306   0.2044
  -7.250  -0.5818   0.01395   0.00928  -0.1223   0.9283   0.2051
  -7.000  -0.5419   0.01353   0.00884  -0.1251   0.9262   0.2056
  -6.750  -0.5321   0.01316   0.00844  -0.1222   0.9123   0.2060
  -6.500  -0.4874   0.01282   0.00808  -0.1258   0.9088   0.2064
  -6.250  -0.4550   0.01239   0.00763  -0.1272   0.8972   0.2072
  -6.000  -0.4094   0.01188   0.00709  -0.1312   0.8878   0.2089
  -5.750  -0.3686   0.01151   0.00667  -0.1342   0.8721   0.2102
  -5.500  -0.3342   0.01128   0.00636  -0.1358   0.8523   0.2112
  -5.250  -0.3046   0.01113   0.00613  -0.1363   0.8317   0.2122
  -5.000  -0.2770   0.01101   0.00593  -0.1365   0.8119   0.2131
  -4.750  -0.2500   0.01092   0.00577  -0.1364   0.7936   0.2140
  -4.500  -0.2229   0.01083   0.00562  -0.1364   0.7774   0.2150
  -4.250  -0.1962   0.01077   0.00547  -0.1363   0.7614   0.2159
  -4.000  -0.1689   0.01068   0.00534  -0.1362   0.7459   0.2167
  -3.750  -0.1415   0.01061   0.00520  -0.1362   0.7313   0.2175
  -3.500  -0.1148   0.01057   0.00508  -0.1359   0.7163   0.2181
  -3.250  -0.0863   0.01050   0.00497  -0.1360   0.7040   0.2187
  -3.000  -0.0589   0.01047   0.00488  -0.1359   0.6912   0.2191
  -2.750  -0.0302   0.01028   0.00467  -0.1362   0.6793   0.2208
  -2.500  -0.0022   0.01016   0.00451  -0.1363   0.6671   0.2225
  -2.250   0.0267   0.01005   0.00439  -0.1365   0.6553   0.2240
  -2.000   0.0549   0.01000   0.00430  -0.1365   0.6433   0.2253
  -1.750   0.0840   0.00994   0.00422  -0.1366   0.6322   0.2266
  -1.500   0.1122   0.00993   0.00416  -0.1366   0.6212   0.2280
  -1.250   0.1417   0.00988   0.00410  -0.1368   0.6115   0.2293
  -1.000   0.1697   0.00989   0.00406  -0.1366   0.6003   0.2305
  -0.750   0.1994   0.00986   0.00401  -0.1368   0.5912   0.2316
  -0.500   0.2277   0.00988   0.00398  -0.1367   0.5803   0.2323
  -0.250   0.2575   0.00979   0.00389  -0.1369   0.5710   0.2344
   0.000   0.2872   0.00972   0.00382  -0.1371   0.5616   0.2369
   0.250   0.3159   0.00972   0.00379  -0.1371   0.5520   0.2389
   0.500   0.3459   0.00969   0.00377  -0.1373   0.5437   0.2409
   0.750   0.3742   0.00972   0.00376  -0.1372   0.5337   0.2427
   1.000   0.4037   0.00972   0.00376  -0.1372   0.5259   0.2445
   1.250   0.4328   0.00975   0.00377  -0.1372   0.5174   0.2459
   1.500   0.4610   0.00979   0.00377  -0.1370   0.5074   0.2482
   1.750   0.4912   0.00974   0.00375  -0.1372   0.4986   0.2519
   2.000   0.5191   0.00980   0.00378  -0.1370   0.4875   0.2547
   2.250   0.5485   0.00981   0.00380  -0.1370   0.4790   0.2574
   2.500   0.5764   0.00988   0.00384  -0.1367   0.4688   0.2597
   2.750   0.6047   0.00996   0.00388  -0.1364   0.4601   0.2614
   3.000   0.6342   0.00995   0.00390  -0.1365   0.4515   0.2656
   3.250   0.6617   0.01004   0.00396  -0.1361   0.4415   0.2692
   3.500   0.6909   0.01006   0.00401  -0.1361   0.4336   0.2725
   3.750   0.7181   0.01017   0.00408  -0.1356   0.4239   0.2753
   4.000   0.7461   0.01026   0.00416  -0.1352   0.4164   0.2773
   4.250   0.7748   0.01029   0.00421  -0.1351   0.4080   0.2823
   4.500   0.8012   0.01040   0.00431  -0.1345   0.3987   0.2862
   4.750   0.8291   0.01046   0.00439  -0.1341   0.3911   0.2900
   5.000   0.8544   0.01060   0.00449  -0.1333   0.3815   0.2929
   5.250   0.8813   0.01068   0.00458  -0.1327   0.3733   0.2969
   5.500   0.9074   0.01079   0.00470  -0.1321   0.3632   0.3017
   5.750   0.9331   0.01092   0.00482  -0.1313   0.3533   0.3057
   6.000   0.9572   0.01111   0.00497  -0.1302   0.3409   0.3091
   6.250   0.9818   0.01128   0.00511  -0.1292   0.3282   0.3115
   6.500   1.0059   0.01149   0.00529  -0.1283   0.3126   0.3170
   6.750   1.0288   0.01177   0.00551  -0.1271   0.2935   0.3215
   7.000   1.0488   0.01221   0.00581  -0.1255   0.2663   0.3254
   7.250   1.0667   0.01274   0.00618  -0.1235   0.2366   0.3285
   7.500   1.0837   0.01330   0.00660  -0.1214   0.2112   0.3317
   7.750   1.1030   0.01375   0.00697  -0.1198   0.1918   0.3375
   8.000   1.1222   0.01421   0.00737  -0.1181   0.1752   0.3423
   8.250   1.1409   0.01468   0.00777  -0.1163   0.1598   0.3464
   8.500   1.1589   0.01517   0.00818  -0.1144   0.1465   0.3493
   8.750   1.1773   0.01563   0.00861  -0.1127   0.1349   0.3550
   9.000   1.1955   0.01612   0.00906  -0.1110   0.1244   0.3601
   9.250   1.2131   0.01663   0.00953  -0.1091   0.1146   0.3647
   9.500   1.2293   0.01718   0.01004  -0.1071   0.1057   0.3683
   9.750   1.2462   0.01771   0.01054  -0.1053   0.0979   0.3728
  10.000   1.2641   0.01822   0.01106  -0.1036   0.0914   0.3791
  10.250   1.2799   0.01881   0.01164  -0.1017   0.0854   0.3846
  10.750   1.3116   0.02004   0.01285  -0.0979   0.0756   0.3937
  11.000   1.3262   0.02072   0.01355  -0.0960   0.0714   0.4006
  11.250   1.3417   0.02139   0.01424  -0.0943   0.0676   0.4065
  11.500   1.3552   0.02217   0.01502  -0.0923   0.0642   0.4113
  11.750   1.3692   0.02295   0.01582  -0.0906   0.0608   0.4165
  12.000   1.3823   0.02382   0.01672  -0.0888   0.0577   0.4233
  12.250   1.3948   0.02474   0.01767  -0.0870   0.0547   0.4292
  12.500   1.4066   0.02575   0.01869  -0.0853   0.0521   0.4342
  12.750   1.4178   0.02682   0.01979  -0.0836   0.0494   0.4400
  13.000   1.4285   0.02799   0.02100  -0.0820   0.0470   0.4470
  13.250   1.4391   0.02920   0.02225  -0.0805   0.0446   0.4531
  13.500   1.4473   0.03063   0.02369  -0.0789   0.0425   0.4581
  13.750   1.4573   0.03200   0.02511  -0.0776   0.0404   0.4647
  14.000   1.4646   0.03364   0.02679  -0.0763   0.0383   0.4721
  14.250   1.4735   0.03521   0.02842  -0.0752   0.0366   0.4787
  14.500   1.4799   0.03705   0.03028  -0.0741   0.0348   0.4834
  14.750   1.4867   0.03894   0.03223  -0.0732   0.0333   0.4914
  15.000   1.4935   0.04089   0.03424  -0.0724   0.0318   0.4988
  15.250   1.4972   0.04319   0.03659  -0.0716   0.0303   0.5051
  15.500   1.5027   0.04542   0.03888  -0.0711   0.0292   0.5125
  15.750   1.5080   0.04773   0.04126  -0.0706   0.0280   0.5208
  16.000   1.5107   0.05038   0.04396  -0.0703   0.0269   0.5278
  16.250   1.5125   0.05321   0.04686  -0.0702   0.0260   0.5346
  16.500   1.5171   0.05582   0.04956  -0.0701   0.0251   0.5435
  16.750   1.5196   0.05872   0.05252  -0.0701   0.0243   0.5516
  17.000   1.5198   0.06199   0.05586  -0.0704   0.0235   0.5598
  17.250   1.5180   0.06561   0.05956  -0.0709   0.0227   0.5685
  17.500   1.5215   0.06860   0.06263  -0.0713   0.0222   0.5771
  17.750   1.5224   0.07204   0.06617  -0.0719   0.0217   0.5868
  18.000   1.5221   0.07567   0.06988  -0.0727   0.0211   0.5967
  18.250   1.5217   0.07940   0.07369  -0.0736   0.0206   0.6069
  18.500   1.5181   0.08367   0.07805  -0.0748   0.0200   0.6174
  18.750   1.5121   0.08835   0.08284  -0.0762   0.0195   0.6269
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