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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(s818-nr) NREL's S818 Airfoil | NREL HAWT airfoil S818 root 24.0% Dia=30 to 50 m Re=2.5E+6 Clmax(S)=1.68 Clmax(R)=1.61 Restrained max lift coef Max thickness 24% at 30.9% chord Max camber 3.3% at 74.2% chord | Remove Airfoil details Airfoil plotter |
(s4310-il) S4310 | Selig S4310 low Reynolds number airfoil Max thickness 10.9% at 30.7% chord Max camber 4.2% at 39.8% chord | Remove Airfoil details Airfoil plotter |
(ssca09-il) SIKORSKY SSC-A09 AIRFOIL | Sikorsky/Flemming SSC-A09 transonic rotorcraft airfoil Max thickness 9% at 37.7% chord Max camber 1.2% at 17.2% chord | Remove Airfoil details Airfoil plotter |
(s826-nr) NREL's S826 Airfoil | NREL HAWT airfoil S826 tip 14.0% Dia=20 to 40 m Re=1.5E+6 Clmax(S)=1.42 Clmax(R)=1.31 High max lift coef Max thickness 14% at 33.7% chord Max camber 4.3% at 62% chord | Remove Airfoil details Airfoil plotter |
(s6063-il) S6063 7.05% | Selig S6063 low Reynolds number airfoil Max thickness 7% at 29.4% chord Max camber 1.3% at 43.8% chord | Remove Airfoil details Airfoil plotter |
(s819-nr) NREL's S819 Airfoil | NREL HAWT airfoil S819 primary 21.0% Dia=10 to 20 m Re=1.0E+6 Clmax(S)=1.20 Clmax(R)=1.16 Restrained max lift coef Max thickness 21.1% at 28.4% chord Max camber 1.3% at 77.3% 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 |
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Polars for (s818-nr,s4310-il,ssca09-il,s826-nr,s6063-il,s819-nr,s821-nr)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| s818-nr | 50,000 | 9 | 6.8 at α=-0.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s818-nr | 50,000 | 5 | 11.4 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s818-nr | 100,000 | 9 | 16.7 at α=14.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s818-nr | 100,000 | 5 | 39.6 at α=9.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s818-nr | 200,000 | 9 | 57.7 at α=10.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s818-nr | 200,000 | 5 | 58.8 at α=9.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s818-nr | 500,000 | 9 | 83.4 at α=9.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s818-nr | 500,000 | 5 | 81.9 at α=9° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s818-nr | 1,000,000 | 9 | 105.9 at α=9.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s818-nr | 1,000,000 | 5 | 101.1 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s4310-il | 50,000 | 9 | 28.2 at α=10.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s4310-il | 50,000 | 5 | 36.3 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s4310-il | 100,000 | 9 | 56.3 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s4310-il | 100,000 | 5 | 58.3 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s4310-il | 200,000 | 9 | 81 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s4310-il | 200,000 | 5 | 78.5 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s4310-il | 500,000 | 9 | 112.9 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s4310-il | 500,000 | 5 | 102.5 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s4310-il | 1,000,000 | 9 | 134.7 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s4310-il | 1,000,000 | 5 | 117.9 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ssca09-il | 50,000 | 9 | 28.7 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ssca09-il | 50,000 | 5 | 27.9 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ssca09-il | 100,000 | 9 | 38.7 at α=3.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ssca09-il | 100,000 | 5 | 39.3 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ssca09-il | 200,000 | 9 | 50 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ssca09-il | 200,000 | 5 | 52.7 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ssca09-il | 500,000 | 9 | 72 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ssca09-il | 500,000 | 5 | 70.2 at α=7° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ssca09-il | 1,000,000 | 9 | 87 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ssca09-il | 1,000,000 | 5 | 82.6 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s826-nr | 50,000 | 9 | 34.6 at α=9.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s826-nr | 50,000 | 5 | 34.4 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s826-nr | 100,000 | 9 | 60.9 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s826-nr | 100,000 | 5 | 60 at α=7° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s826-nr | 200,000 | 9 | 83 at α=7.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s826-nr | 200,000 | 5 | 81.4 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s826-nr | 500,000 | 9 | 114 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s826-nr | 500,000 | 5 | 107.7 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s826-nr | 1,000,000 | 9 | 137.7 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s826-nr | 1,000,000 | 5 | 126.7 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6063-il | 50,000 | 9 | 34.7 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6063-il | 50,000 | 5 | 34.7 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6063-il | 100,000 | 9 | 48.6 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6063-il | 100,000 | 5 | 45.3 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6063-il | 200,000 | 9 | 61.5 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6063-il | 200,000 | 5 | 53.4 at α=2.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6063-il | 500,000 | 9 | 74.8 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6063-il | 500,000 | 5 | 60.2 at α=2° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s6063-il | 1,000,000 | 9 | 81.3 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s6063-il | 1,000,000 | 5 | 68.1 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s819-nr | 50,000 | 9 | 7.9 at α=0.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s819-nr | 50,000 | 5 | 22.6 at α=9.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s819-nr | 100,000 | 9 | 38.4 at α=10.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s819-nr | 100,000 | 5 | 40.4 at α=8.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s819-nr | 200,000 | 9 | 55.6 at α=9.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s819-nr | 200,000 | 5 | 54.8 at α=8.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s819-nr | 500,000 | 9 | 77.6 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s819-nr | 500,000 | 5 | 72.5 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s819-nr | 1,000,000 | 9 | 93.4 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s819-nr | 1,000,000 | 5 | 84.1 at α=6.75° | 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 | |
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