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NREL's S809 Airfoil (s809-nr) Xfoil prediction polar at RE=500,000 Ncrit=9


Details Polar file
Airfoil: NREL's S809 Airfoil (s809-nr)
Reynolds number: 500,000
Max Cl/Cd: 81.2 at α=7°
Description: Mach=0 Ncrit=9
Source: Xfoil prediction
Download polar: xf-s809-nr-500000.txt
Download as CSV file: xf-s809-nr-500000.csv

  
       XFOIL         Version 6.96
  
 Calculated polar for: NREL's S809 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
  ------ -------- --------- --------- -------- -------- --------
 -18.000  -0.3992   0.16006   0.15751  -0.0156   0.7720   0.0155
 -17.750  -0.4079   0.15215   0.14959  -0.0203   0.7665   0.0161
 -11.500  -0.6189   0.04377   0.03655  -0.0617   0.6633   0.0097
 -11.250  -0.5860   0.04451   0.03728  -0.0603   0.6604   0.0101
 -11.000  -0.5621   0.04466   0.03741  -0.0591   0.6580   0.0102
 -10.750  -0.5447   0.04405   0.03677  -0.0587   0.6559   0.0105
 -10.500  -0.5268   0.04369   0.03639  -0.0577   0.6537   0.0106
 -10.250  -0.5115   0.04291   0.03560  -0.0573   0.6518   0.0112
 -10.000  -0.4961   0.04213   0.03478  -0.0569   0.6500   0.0117
  -9.750  -0.4845   0.04130   0.03392  -0.0557   0.6483   0.0118
  -9.500  -0.4724   0.04032   0.03288  -0.0551   0.6467   0.0122
  -9.250  -0.4626   0.03919   0.03171  -0.0543   0.6452   0.0121
  -9.000  -0.4523   0.03806   0.03053  -0.0537   0.6436   0.0124
  -8.750  -0.4464   0.03661   0.02905  -0.0528   0.6425   0.0124
  -8.500  -0.4437   0.03492   0.02734  -0.0517   0.6413   0.0129
  -8.250  -0.4412   0.03328   0.02568  -0.0506   0.6400   0.0134
  -8.000  -0.4363   0.03183   0.02422  -0.0495   0.6387   0.0149
  -7.750  -0.4298   0.03055   0.02290  -0.0485   0.6376   0.0150
  -7.500  -0.4241   0.02926   0.02156  -0.0474   0.6365   0.0160
  -7.250  -0.4247   0.02760   0.01988  -0.0458   0.6354   0.0184
  -7.000  -0.4257   0.02592   0.01819  -0.0441   0.6344   0.0240
  -6.750  -0.4352   0.02378   0.01612  -0.0417   0.6334   0.0433
  -6.500  -0.4597   0.02075   0.01327  -0.0383   0.6325   0.0911
  -6.250  -0.4872   0.01788   0.01051  -0.0341   0.6316   0.1316
  -6.000  -0.5147   0.01444   0.00733  -0.0314   0.6307   0.2250
  -5.750  -0.5255   0.01121   0.00508  -0.0294   0.6298   0.4604
  -5.500  -0.4954   0.01172   0.00554  -0.0300   0.6288   0.4870
  -5.000  -0.4319   0.01373   0.00765  -0.0307   0.6271   0.5106
  -4.750  -0.4013   0.01452   0.00838  -0.0311   0.6265   0.5184
  -4.500  -0.3701   0.01496   0.00890  -0.0315   0.6258   0.5212
  -4.250  -0.3414   0.01485   0.00874  -0.0321   0.6251   0.5221
  -4.000  -0.3126   0.01475   0.00859  -0.0327   0.6244   0.5230
  -3.750  -0.2838   0.01465   0.00844  -0.0333   0.6237   0.5239
  -3.500  -0.2550   0.01455   0.00830  -0.0340   0.6231   0.5250
  -3.250  -0.2262   0.01445   0.00815  -0.0346   0.6222   0.5261
  -3.000  -0.1974   0.01435   0.00800  -0.0353   0.6213   0.5272
  -2.750  -0.1685   0.01426   0.00787  -0.0359   0.6205   0.5285
  -2.500  -0.1395   0.01419   0.00775  -0.0366   0.6198   0.5299
  -2.250  -0.1105   0.01414   0.00764  -0.0373   0.6192   0.5311
  -2.000  -0.0814   0.01409   0.00754  -0.0380   0.6185   0.5321
  -1.750  -0.0524   0.01399   0.00739  -0.0387   0.6179   0.5331
  -1.500  -0.0235   0.01383   0.00724  -0.0394   0.6173   0.5341
  -1.250   0.0056   0.01377   0.00719  -0.0400   0.6168   0.5350
  -1.000   0.0348   0.01376   0.00718  -0.0407   0.6162   0.5359
  -0.750   0.0641   0.01376   0.00719  -0.0413   0.6157   0.5368
  -0.500   0.0934   0.01378   0.00721  -0.0420   0.6151   0.5377
  -0.250   0.1226   0.01381   0.00724  -0.0426   0.6145   0.5387
   0.000   0.1519   0.01386   0.00729  -0.0433   0.6137   0.5398
   0.250   0.1812   0.01394   0.00738  -0.0439   0.6130   0.5410
   0.500   0.2103   0.01404   0.00749  -0.0446   0.6125   0.5423
   0.750   0.2394   0.01415   0.00761  -0.0453   0.6119   0.5435
   1.000   0.2685   0.01415   0.00764  -0.0459   0.6113   0.5446
   1.250   0.2975   0.01414   0.00765  -0.0466   0.6103   0.5457
   1.500   0.3265   0.01415   0.00769  -0.0472   0.6092   0.5467
   1.750   0.3555   0.01420   0.00776  -0.0478   0.6081   0.5476
   2.000   0.3844   0.01419   0.00778  -0.0485   0.6071   0.5485
   2.250   0.4131   0.01415   0.00781  -0.0490   0.6059   0.5497
   2.500   0.4418   0.01418   0.00791  -0.0496   0.6048   0.5508
   2.750   0.4706   0.01423   0.00803  -0.0501   0.6035   0.5519
   3.000   0.4996   0.01426   0.00812  -0.0506   0.6019   0.5530
   3.250   0.5289   0.01426   0.00815  -0.0511   0.5999   0.5541
   3.500   0.5584   0.01429   0.00819  -0.0517   0.5978   0.5552
   3.750   0.5871   0.01439   0.00833  -0.0522   0.5951   0.5563
   4.000   0.6152   0.01425   0.00827  -0.0525   0.5914   0.5575
   4.250   0.6442   0.01407   0.00813  -0.0529   0.5870   0.5586
   4.500   0.6745   0.01386   0.00790  -0.0534   0.5827   0.5598
   4.750   0.7033   0.01378   0.00784  -0.0538   0.5781   0.5611
   5.000   0.7310   0.01353   0.00766  -0.0539   0.5719   0.5623
   5.250   0.7610   0.01332   0.00744  -0.0544   0.5671   0.5633
   5.500   0.7893   0.01315   0.00732  -0.0547   0.5626   0.5645
   5.750   0.8160   0.01285   0.00716  -0.0546   0.5560   0.5657
   6.000   0.8446   0.01254   0.00685  -0.0548   0.5486   0.5668
   6.250   0.8703   0.01229   0.00676  -0.0545   0.5398   0.5679
   6.500   0.8970   0.01207   0.00662  -0.0544   0.5305   0.5690
   6.750   0.9232   0.01187   0.00654  -0.0541   0.5162   0.5702
   7.000   0.9468   0.01166   0.00632  -0.0534   0.4731   0.5715
   7.250   0.9485   0.01260   0.00670  -0.0492   0.3779   0.5727
   7.500   0.9493   0.01382   0.00754  -0.0451   0.3042   0.5739
   7.750   0.9494   0.01493   0.00835  -0.0411   0.2451   0.5751
   8.000   0.9473   0.01583   0.00904  -0.0366   0.2033   0.5763
   8.250   0.9442   0.01675   0.00980  -0.0320   0.1690   0.5772
   8.500   0.9435   0.01782   0.01072  -0.0283   0.1400   0.5781
   8.750   0.9435   0.01897   0.01176  -0.0251   0.1163   0.5788
   9.000   0.9437   0.02018   0.01290  -0.0223   0.0961   0.5801
   9.250   0.9448   0.02155   0.01422  -0.0201   0.0805   0.5812
   9.500   0.9477   0.02302   0.01566  -0.0184   0.0669   0.5823
   9.750   0.9512   0.02458   0.01721  -0.0169   0.0563   0.5835
  10.000   0.9567   0.02611   0.01873  -0.0158   0.0481   0.5846
  10.250   0.9638   0.02757   0.02022  -0.0148   0.0423   0.5859
  10.500   0.9668   0.02935   0.02200  -0.0136   0.0374   0.5871
  10.750   0.9770   0.03062   0.02334  -0.0129   0.0343   0.5884
  11.000   0.9827   0.03225   0.02496  -0.0120   0.0310   0.5899
  11.250   0.9887   0.03388   0.02664  -0.0112   0.0286   0.5913
  11.500   0.9974   0.03533   0.02815  -0.0105   0.0269   0.5926
  11.750   1.0044   0.03694   0.02977  -0.0099   0.0250   0.5939
  12.000   1.0031   0.03921   0.03208  -0.0088   0.0234   0.5951
  12.250   1.0132   0.04059   0.03358  -0.0084   0.0226   0.5966
  12.500   1.0220   0.04212   0.03520  -0.0080   0.0215   0.5980
  12.750   1.0304   0.04374   0.03688  -0.0076   0.0205   0.5995
  13.000   1.0371   0.04554   0.03873  -0.0072   0.0196   0.6009
  13.250   1.0364   0.04803   0.04126  -0.0066   0.0185   0.6024
  13.500   1.0452   0.04976   0.04308  -0.0064   0.0180   0.6039
  13.750   1.0549   0.05145   0.04485  -0.0063   0.0173   0.6057
  14.000   1.0626   0.05334   0.04683  -0.0062   0.0167   0.6073
  14.250   1.0713   0.05522   0.04876  -0.0062   0.0160   0.6089
  14.500   1.0799   0.05712   0.05070  -0.0065   0.0151   0.6107
  14.750   1.0838   0.05949   0.05315  -0.0065   0.0147   0.6124
  15.000   1.0866   0.06199   0.05576  -0.0063   0.0141   0.6142
  15.250   1.0952   0.06406   0.05795  -0.0067   0.0136   0.6163
  15.500   1.1021   0.06635   0.06036  -0.0071   0.0131   0.6185
  15.750   1.1082   0.06877   0.06286  -0.0076   0.0126   0.6209
  16.000   1.1149   0.07120   0.06535  -0.0084   0.0120   0.6232
  16.250   1.1188   0.07394   0.06815  -0.0091   0.0116   0.6254
  16.500   1.1171   0.07737   0.07165  -0.0098   0.0109   0.6275
  16.750   1.1216   0.08027   0.07470  -0.0107   0.0106   0.6300
  17.000   1.1255   0.08335   0.07794  -0.0119   0.0102   0.6326
  17.250   1.1276   0.08669   0.08141  -0.0131   0.0098   0.6352
  17.500   1.1296   0.09009   0.08491  -0.0145   0.0094   0.6381
  17.750   1.1308   0.09372   0.08862  -0.0161   0.0091   0.6408
  18.000   1.1307   0.09757   0.09259  -0.0178   0.0088   0.6437
  18.250   1.1292   0.10166   0.09679  -0.0196   0.0086   0.6466
  18.500   1.1243   0.10630   0.10154  -0.0216   0.0084   0.6497
  18.750   1.1179   0.11131   0.10668  -0.0239   0.0081   0.6526
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