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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(s831-nr) NREL's S831 Airfoil | NREL HAWT airfoil S831 tip 18.0% Dia=40 to 50 m Re=3.5E+6 Clmax(S)=1.50 Clmax(R)=1.48 High max lift coef Max thickness 18% at 44.2% chord Max camber 5% at 53.1% chord | Remove Airfoil details Airfoil plotter |
(goe645-il) GOE 645 AIRFOIL | Gottingen 645 airfoil Max thickness 15.4% at 19.4% chord Max camber 4.8% at 39.4% chord | Remove Airfoil details Airfoil plotter |
(s811-nr) NREL's S811 Airfoil | NREL HAWT airfoil S811 root Max thickness 26.3% at 27.4% chord Max camber 1.7% at 76.4% chord | Remove Airfoil details Airfoil plotter |
(sc20710-il) NASA SC(2)-0710 AIRFOIL | NASA SC(2)-0710 airfoil (NASA TP-2969) Max thickness 10% at 37% chord Max camber 2.1% at 81% chord | Remove Airfoil details Airfoil plotter |
(s810-nr) NREL's S810 Airfoil | NREL HAWT airfoil S810 tip Max thickness 18% at 44.2% chord Max camber 0.9% at 10.9% chord | Remove Airfoil details Airfoil plotter |
(sc20518-il) NASA SC(2)-0518 AIRFOIL | NASA SC(2)-0518 airfoil (NASA TP-2969) Max thickness 18% at 35% chord Max camber 1.9% at 82% chord | Remove Airfoil details Airfoil plotter |
(ah79100c-il) AH 79-100 C AIRFOIL | Althaus AH 79-100C airfoil Max thickness 9.9% at 30.9% chord Max camber 6.7% at 50% chord | Remove Airfoil details Airfoil plotter |
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Polars for (s831-nr,goe645-il,s811-nr,sc20710-il,s810-nr,sc20518-il,ah79100c-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| s831-nr | 50,000 | 9 | 17.2 at α=13.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s831-nr | 50,000 | 5 | 14.2 at α=13.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s831-nr | 100,000 | 9 | 21.8 at α=13° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s831-nr | 100,000 | 5 | 21.2 at α=12.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s831-nr | 200,000 | 9 | 36.7 at α=11.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s831-nr | 200,000 | 5 | 47 at α=3.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s831-nr | 500,000 | 9 | 113.9 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s831-nr | 500,000 | 5 | 112.6 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s831-nr | 1,000,000 | 9 | 152.7 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s831-nr | 1,000,000 | 5 | 147.5 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe645-il | 50,000 | 9 | 9.5 at α=2° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe645-il | 50,000 | 5 | 28.7 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe645-il | 100,000 | 9 | 43.7 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe645-il | 100,000 | 5 | 48.7 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe645-il | 200,000 | 9 | 66.3 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe645-il | 200,000 | 5 | 65.8 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe645-il | 500,000 | 9 | 93.5 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe645-il | 500,000 | 5 | 84.4 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe645-il | 1,000,000 | 9 | 110.5 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe645-il | 1,000,000 | 5 | 88.6 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s811-nr | 50,000 | 9 | 6.1 at α=-0.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s811-nr | 50,000 | 5 | 7.5 at α=2.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s811-nr | 100,000 | 9 | 12.8 at α=15° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s811-nr | 100,000 | 5 | 28.4 at α=10.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s811-nr | 200,000 | 9 | 48.8 at α=11.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s811-nr | 200,000 | 5 | 52.3 at α=10.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s811-nr | 500,000 | 9 | 79.1 at α=10.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s811-nr | 500,000 | 5 | 76 at α=8.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s811-nr | 1,000,000 | 9 | 99.5 at α=9.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s811-nr | 1,000,000 | 5 | 90.9 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20710-il | 50,000 | 9 | 24.8 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20710-il | 50,000 | 5 | 25.7 at α=3° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20710-il | 100,000 | 9 | 32.3 at α=3° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20710-il | 100,000 | 5 | 33.8 at α=1.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20710-il | 200,000 | 9 | 44.1 at α=1.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20710-il | 200,000 | 5 | 45 at α=0.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20710-il | 500,000 | 9 | 71.6 at α=0.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20710-il | 500,000 | 5 | 63.7 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20710-il | 1,000,000 | 9 | 90.1 at α=-0.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20710-il | 1,000,000 | 5 | 79.1 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s810-nr | 50,000 | 9 | 20.7 at α=9.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s810-nr | 50,000 | 5 | 16.5 at α=9.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s810-nr | 100,000 | 9 | 24.9 at α=9.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s810-nr | 100,000 | 5 | 27.1 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s810-nr | 200,000 | 9 | 50 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s810-nr | 200,000 | 5 | 52.2 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s810-nr | 500,000 | 9 | 83.2 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s810-nr | 500,000 | 5 | 77.2 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s810-nr | 1,000,000 | 9 | 105.4 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s810-nr | 1,000,000 | 5 | 92.5 at α=4° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20518-il | 50,000 | 9 | 26 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20518-il | 50,000 | 5 | 20.9 at α=9° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20518-il | 100,000 | 9 | 25.9 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20518-il | 100,000 | 5 | 30.2 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20518-il | 200,000 | 9 | 36.5 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20518-il | 200,000 | 5 | 43.2 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20518-il | 500,000 | 9 | 59.3 at α=6.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20518-il | 500,000 | 5 | 62.5 at α=6.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sc20518-il | 1,000,000 | 9 | 77.3 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sc20518-il | 1,000,000 | 5 | 78.1 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ah79100c-il | 50,000 | 9 | 32.2 at α=11° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ah79100c-il | 50,000 | 5 | 31.5 at α=10° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ah79100c-il | 100,000 | 9 | 61.7 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ah79100c-il | 100,000 | 5 | 61.5 at α=7° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ah79100c-il | 200,000 | 9 | 97.6 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ah79100c-il | 200,000 | 5 | 97 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ah79100c-il | 500,000 | 9 | 147.6 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ah79100c-il | 500,000 | 5 | 137.7 at α=3° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| ah79100c-il | 1,000,000 | 9 | 183 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| ah79100c-il | 1,000,000 | 5 | 161.4 at α=2.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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