NREL's S820 Airfoil (s820-nr)
NREL's S820 Airfoil - NREL HAWT airfoil S820 tip 16.0% Dia=10 to 20 m Re=1.3E+6 Clmax(S)=1.10 Clmax(R)=1.06 Restrained max lift coef
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(s820-nr) NREL's S820 Airfoil NREL HAWT airfoil S820 tip 16.0% Dia=10 to 20 m Re=1.3E+6 Clmax(S)=1.10 Clmax(R)=1.06 Restrained max lift coef Max thickness 16% at 45.1% chord. Max camber 2.1% at 59.7% chord Source NWTC National WInd Technology Center Source dat file The dat file is in Selig format |
NREL's S820 Airfoil x/c y/c 1.000000 0.000000 0.996214 0.000505 0.985214 0.002540 0.967892 0.006537 0.945228 0.012390 0.917963 0.019640 0.886485 0.027777 0.850998 0.036689 0.812173 0.046401 0.770798 0.056654 0.727639 0.067030 0.683412 0.076946 0.638577 0.085468 0.592824 0.092241 0.546545 0.097201 0.499848 0.100066 0.452681 0.101025 0.405512 0.100437 0.358861 0.098462 0.313252 0.095223 0.269179 0.090832 0.227135 0.085402 0.187577 0.079047 0.150957 0.071882 0.117679 0.064007 0.088084 0.055543 0.062503 0.046603 0.041136 0.037327 0.024243 0.027843 0.011711 0.018325 0.003650 0.009309 0.000127 0.001407 0.000109 0.001293 0.000008 -0.000335 0.000091 -0.001066 0.000286 -0.001719 0.000646 -0.002321 0.001162 -0.002929 0.002460 -0.004090 0.002568 -0.004173 0.012145 -0.009433 0.027631 -0.015109 0.048455 -0.020953 0.074139 -0.026826 0.104315 -0.032597 0.138524 -0.038136 0.176342 -0.043316 0.217272 -0.048005 0.260834 -0.052072 0.306489 -0.055382 0.353714 -0.057789 0.401939 -0.059126 0.450609 -0.059167 0.499228 -0.057439 0.547944 -0.053587 0.596957 -0.048001 0.645793 -0.041049 0.694524 -0.033172 0.742551 -0.025276 0.789038 -0.017945 0.833084 -0.011608 0.873751 -0.006548 0.910106 -0.002900 0.941260 -0.000641 0.966410 0.000405 0.984887 0.000559 0.996194 0.000246 1.000000 0.000000 |
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Similar airfoils
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Polars for NREL's S820 Airfoil (s820-nr)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| s820-nr | 50,000 | 9 | 26.8 at α=9.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s820-nr | 50,000 | 5 | 22.4 at α=9.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s820-nr | 100,000 | 9 | 39.3 at α=9° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s820-nr | 100,000 | 5 | 37 at α=8.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s820-nr | 200,000 | 9 | 65.4 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s820-nr | 200,000 | 5 | 65.9 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s820-nr | 500,000 | 9 | 105.3 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s820-nr | 500,000 | 5 | 95.1 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s820-nr | 1,000,000 | 9 | 129.5 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s820-nr | 1,000,000 | 5 | 109.8 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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