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NREL's S825 Airfoil (s825-nr)

NREL's S825 Airfoil - NREL HAWT airfoil S825 primary 17.0% Dia=20 to 40 m Re=2.0E+6 Clmax(S)=1.44 Clmax(R)=1.37 High max lift coef


Airfoil s825-nr
Details Dat file Parser  
(s825-nr) NREL's S825 Airfoil
NREL HAWT airfoil S825 primary 17.0% Dia=20 to 40 m Re=2.0E+6 Clmax(S)=1.44 Clmax(R)=1.37 High max lift coef
Max thickness 17.1% at 29.9% chord.
Max camber 3.9% at 65.3% chord
Source NWTC National WInd Technology Center
Source dat file
The dat file is in Selig format
NREL's S825 Airfoil
   x/c        y/c
1.000000   0.000000
0.996570   0.001028
0.986818   0.004448
0.971880   0.010231
0.952717   0.017662
0.929752   0.025751
0.902833   0.033652
0.871528   0.041271
0.836114   0.048876
0.797069   0.056458
0.754897   0.063941
0.710138   0.071218
0.663351   0.078157
0.615114   0.084609
0.566008   0.090410
0.516608   0.095384
0.467478   0.099348
0.419157   0.102112
0.372156   0.103477
0.326954   0.103210
0.283877   0.100852
0.242544   0.096429
0.203250   0.090486
0.166441   0.083300
0.132516   0.075080
0.101858   0.066025
0.074808   0.056299
0.051611   0.046093
0.032528   0.035620
0.017669   0.025116
0.007250   0.014931
0.001302   0.005460
0.000279   0.002274
0.000007   0.000333
0.000133  -0.001406
0.000404  -0.002209
0.000823  -0.003044
0.001984  -0.004752
0.006527  -0.009200
0.018217  -0.016501
0.035069  -0.023802
0.056732  -0.030906
0.083012  -0.037749
0.113543  -0.044354
0.147969  -0.050900
0.185274  -0.058241
0.222707  -0.065209
0.260141  -0.069265
0.298681  -0.069043
0.339928  -0.064363
0.384494  -0.056151
0.432764  -0.045217
0.484697  -0.032983
0.539472  -0.020657
0.596075  -0.009137
0.653366   0.000870
0.710118   0.008837
0.765052   0.014417
0.816887   0.017443
0.864382   0.017898
0.906198   0.015809
0.940771   0.011862
0.967294   0.007357
0.985736   0.003455
0.996488   0.000893
1.000000   0.000000
Dat file parser warnings
  • Line 2 - Invalid characters : x/c y/c
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Polars for NREL's S825 Airfoil (s825-nr)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   s825-nr50,000929.3 at α=10.5°Mach=0 Ncrit=9Xfoil predictionDetails
   s825-nr50,000532.2 at α=8.75°Mach=0 Ncrit=5Xfoil predictionDetails
   s825-nr100,000950.3 at α=8.75°Mach=0 Ncrit=9Xfoil predictionDetails
   s825-nr100,000552.8 at α=7.75°Mach=0 Ncrit=5Xfoil predictionDetails
   s825-nr200,000970.1 at α=8°Mach=0 Ncrit=9Xfoil predictionDetails
   s825-nr200,000570.5 at α=7°Mach=0 Ncrit=5Xfoil predictionDetails
   s825-nr500,000997.4 at α=7°Mach=0 Ncrit=9Xfoil predictionDetails
   s825-nr500,000594 at α=6°Mach=0 Ncrit=5Xfoil predictionDetails
   s825-nr1,000,0009118.9 at α=6°Mach=0 Ncrit=9Xfoil predictionDetails
   s825-nr1,000,0005111 at α=5°Mach=0 Ncrit=5Xfoil predictionDetails
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