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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(s833-nr) NREL's S833 Airfoil | NREL HAWT airfoil S833 primary 18.0% Dia=1 to 3 m Re=4.0E+5 Clmax(S)=1.10 Clmax(R)=1.13 High max lift coef Max thickness 18% at 36.3% chord Max camber 2.5% at 78.8% chord | Remove Airfoil details Airfoil plotter |
(ste87151-il) EPPLER STE 871-514 AIRFOIL | Eppler STE 871-514 airfoil Max thickness 13.9% at 47.3% chord Max camber 2.5% at 79% chord | Remove Airfoil details Airfoil plotter |
(s821-nr) NREL's S821 Airfoil | NREL HAWT airfoil S821 root 24.0% Dia=10 to 20 m Re=8.0E+5 Clmax(S)=1.40 Clmax(R)=1.35 Restrained max lift coef Max thickness 24.2% at 24.6% chord Max camber 2.6% at 77.6% chord | Remove Airfoil details Airfoil plotter |
(s829-nr) NREL's S829 Airfoil | NREL HAWT airfoil S829 tip 16.0% Dia=20 to 40 m Re=2.0E+6 Clmax(S)=0.70 Clmax(R)=0.68 Restrained max lift coef Max thickness 16% at 48.3% chord Max camber 0.7% at 48.3% chord | Remove Airfoil details Airfoil plotter |
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Polars for (s833-nr,ste87151-il,s821-nr,s829-nr)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| s833-nr | 50,000 | 9 | 27.5 at α=9.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s833-nr | 50,000 | 5 | 23.6 at α=9.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s833-nr | 100,000 | 9 | 39.4 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s833-nr | 100,000 | 5 | 36.8 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s833-nr | 200,000 | 9 | 54.8 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s833-nr | 200,000 | 5 | 55.3 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s833-nr | 500,000 | 9 | 86.4 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s833-nr | 500,000 | 5 | 74.3 at α=3.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s833-nr | 1,000,000 | 9 | 104.1 at α=3.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s833-nr | 1,000,000 | 5 | 79.9 at α=2.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ste87151-il | 50,000 | 9 | 28 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ste87151-il | 50,000 | 5 | 25.8 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ste87151-il | 100,000 | 9 | 40.6 at α=7.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ste87151-il | 100,000 | 5 | 36.4 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ste87151-il | 200,000 | 9 | 55.2 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ste87151-il | 200,000 | 5 | 52.2 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ste87151-il | 500,000 | 9 | 81.8 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ste87151-il | 500,000 | 5 | 79.1 at α=2.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ste87151-il | 1,000,000 | 9 | 113.9 at α=2.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ste87151-il | 1,000,000 | 5 | 104.5 at α=1.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s821-nr | 50,000 | 9 | 4.8 at α=11.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s821-nr | 50,000 | 5 | 19.4 at α=9.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s821-nr | 100,000 | 9 | 35.6 at α=9° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s821-nr | 100,000 | 5 | 37.4 at α=8.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s821-nr | 200,000 | 9 | 52.8 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s821-nr | 200,000 | 5 | 51.1 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s821-nr | 500,000 | 9 | 72.8 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s821-nr | 500,000 | 5 | 66 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s821-nr | 1,000,000 | 9 | 87.5 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s821-nr | 1,000,000 | 5 | 75.6 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 50,000 | 9 | 22.4 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 50,000 | 5 | 21 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 100,000 | 9 | 33.1 at α=6.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 100,000 | 5 | 25.3 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 200,000 | 9 | 47.5 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 200,000 | 5 | 35.6 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 500,000 | 9 | 63 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 500,000 | 5 | 62.3 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 1,000,000 | 9 | 88.2 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 1,000,000 | 5 | 72.4 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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