Airfoil Comparison
Select airfoils from the airfoil database or add your own airfoils and compare the airfoil shape and lift/drag polars.
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(s817-nr) NREL's S817 Airfoil | NREL HAWT airfoil S817 tip 16.0% Dia=30 to 50 m Re=3.0E+6 Clmax(S)=1.10 Clmax(R)=1.08 Restrained max lift coef Max thickness 16% at 51.1% chord Max camber 2.8% at 41.1% chord | Remove Airfoil details Airfoil plotter |
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Polars for (s817-nr)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| s817-nr | 50,000 | 9 | 21.5 at α=11° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s817-nr | 50,000 | 5 | 17.9 at α=10.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s817-nr | 100,000 | 9 | 25.9 at α=9.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s817-nr | 100,000 | 5 | 26.6 at α=9.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s817-nr | 200,000 | 9 | 45.3 at α=8.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s817-nr | 200,000 | 5 | 53 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s817-nr | 500,000 | 9 | 105.3 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s817-nr | 500,000 | 5 | 101.1 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s817-nr | 1,000,000 | 9 | 137.3 at α=5.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s817-nr | 1,000,000 | 5 | 126 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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