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NREL's S823 Airfoil (s823-nr)

NREL's S823 Airfoil - NREL HAWT airfoil S823 root 21.0% Dia=2 to 10 m Re=4.0E+5 Clmax(S)=1.20 Clmax(R)=1.16 Restrained max lift coef


Airfoil s823-nr
Details Dat file Parser  
(s823-nr) NREL's S823 Airfoil
NREL HAWT airfoil S823 root 21.0% Dia=2 to 10 m Re=4.0E+5 Clmax(S)=1.20 Clmax(R)=1.16 Restrained max lift coef
Max thickness 21.2% at 24.3% chord.
Max camber 2.4% at 70.5% chord
Source NWTC National WInd Technology Center
Source dat file
The dat file is in Selig format
NREL's S823 Airfoil
   x/c        y/c
1.000000   0.000000
0.996182   0.001021
0.985647   0.004487
0.969834   0.009935
0.949208   0.016186
0.923311   0.022860
0.892433   0.030245
0.857144   0.038305
0.818037   0.046896
0.775723   0.055810
0.730810   0.064793
0.683890   0.073566
0.635537   0.081835
0.586291   0.089312
0.536666   0.095725
0.487145   0.100825
0.438182   0.104394
0.390202   0.106236
0.343554   0.106115
0.298349   0.104071
0.255030   0.100219
0.213826   0.094667
0.175150   0.087661
0.139404   0.079378
0.106993   0.069983
0.078238   0.059647
0.053489   0.048562
0.032973   0.036935
0.017013   0.025059
0.005871   0.013252
0.001538   0.006021
0.000533   0.003322
0.000235   0.002160
0.000026   0.000734
0.000174  -0.001931
0.000800  -0.004837
0.002374  -0.009387
0.010193  -0.023971
0.021425  -0.041404
0.034330  -0.059382
0.049121  -0.076692
0.065425  -0.091707
0.084347  -0.102507
0.108058  -0.109780
0.136074  -0.114432
0.168058  -0.116517
0.203782  -0.116043
0.243045  -0.113061
0.285642  -0.107692
0.331343  -0.100136
0.379872  -0.090684
0.430894  -0.079712
0.483993  -0.067673
0.538656  -0.055088
0.594258  -0.042513
0.650057  -0.030520
0.705190  -0.019649
0.758682  -0.010377
0.809471  -0.003071
0.856439   0.002045
0.898460   0.004922
0.934449   0.005687
0.963294   0.004594
0.983900   0.002540
0.996032   0.000732
1.000000   0.000000
Dat file parser warnings
  • Line 2 - Invalid characters : x/c y/c
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Polars for NREL's S823 Airfoil (s823-nr)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   s823-nr50,000920.9 at α=11.5°Mach=0 Ncrit=9Xfoil predictionDetails
   s823-nr50,000520.4 at α=9°Mach=0 Ncrit=5Xfoil predictionDetails
   s823-nr100,000942.3 at α=9.25°Mach=0 Ncrit=9Xfoil predictionDetails
   s823-nr100,000543.2 at α=8°Mach=0 Ncrit=5Xfoil predictionDetails
   s823-nr200,000962.5 at α=8°Mach=0 Ncrit=9Xfoil predictionDetails
   s823-nr200,000560 at α=7.25°Mach=0 Ncrit=5Xfoil predictionDetails
   s823-nr500,000986.1 at α=7°Mach=0 Ncrit=9Xfoil predictionDetails
   s823-nr500,000577.5 at α=6°Mach=0 Ncrit=5Xfoil predictionDetails
   s823-nr1,000,0009101.5 at α=6.25°Mach=0 Ncrit=9Xfoil predictionDetails
   s823-nr1,000,000587.6 at α=5.25°Mach=0 Ncrit=5Xfoil predictionDetails
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