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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(s834-nr) NREL's S834 Airfoil | NREL HAWT airfoil S834 tip 15.0% Dia=1 to 3 m Re=4.0E+5 Clmax(S)=1.00 Clmax(R)=1.02 High max lift coef Max thickness 15% at 39.5% chord Max camber 1.6% at 60% chord | Remove Airfoil details Airfoil plotter |
(s812-nr) NREL's S812 Airfoil | NREL HAWT airfoil S812 primary Max thickness 21% at 39.6% chord Max camber 1.6% at 77% chord | Remove Airfoil details Airfoil plotter |
(s6061-il) S6061 9% | Selig S6061 low Reynolds number airfoil Max thickness 9% at 34% chord Max camber 1.5% at 43.6% chord | Remove Airfoil details Airfoil plotter |
(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 (s834-nr,s812-nr,s6061-il,s817-nr)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| s834-nr | 50,000 | 9 | 29.8 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s834-nr | 50,000 | 5 | 26.6 at α=8.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s834-nr | 100,000 | 9 | 47.4 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s834-nr | 100,000 | 5 | 44.7 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s834-nr | 200,000 | 9 | 70.6 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s834-nr | 200,000 | 5 | 55.5 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s834-nr | 500,000 | 9 | 81.2 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s834-nr | 500,000 | 5 | 74.4 at α=4° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s834-nr | 1,000,000 | 9 | 102.7 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s834-nr | 1,000,000 | 5 | 83.5 at α=3.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s812-nr | 50,000 | 9 | 17.4 at α=13.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s812-nr | 50,000 | 5 | 14.2 at α=11.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s812-nr | 100,000 | 9 | 23.9 at α=11° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s812-nr | 100,000 | 5 | 25.8 at α=10° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s812-nr | 200,000 | 9 | 56.2 at α=9° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s812-nr | 200,000 | 5 | 59.6 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s812-nr | 500,000 | 9 | 92.4 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s812-nr | 500,000 | 5 | 87.4 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s812-nr | 1,000,000 | 9 | 116.5 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s812-nr | 1,000,000 | 5 | 105.2 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6061-il | 50,000 | 9 | 34.1 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6061-il | 50,000 | 5 | 35.9 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6061-il | 100,000 | 9 | 51.2 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6061-il | 100,000 | 5 | 50.1 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6061-il | 200,000 | 9 | 68.2 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6061-il | 200,000 | 5 | 63.3 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6061-il | 500,000 | 9 | 88.8 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6061-il | 500,000 | 5 | 77.3 at α=3.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6061-il | 1,000,000 | 9 | 102 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6061-il | 1,000,000 | 5 | 81.7 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| 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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