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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(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 |
(e580-il) EPPLER 580 AIRFOIL | Eppler E580 general purpose airfoil Max thickness 16.1% at 33% chord Max camber 4.1% at 61.2% chord | Remove Airfoil details Airfoil plotter |
(e555-il) EPPLER 555 AIRFOIL | Eppler E555 general aviation airfoil Max thickness 16% at 31.9% chord Max camber 2.6% at 67.4% chord | Remove Airfoil details Airfoil plotter |
(e591-il) E591 | Eppler E591 airfoil Max thickness 15.7% at 25% chord Max camber 6% at 52.3% chord | Remove Airfoil details Airfoil plotter |
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Polars for (s819-nr,e580-il,e555-il,e591-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| 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 | |
| e580-il | 50,000 | 9 | 7.5 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e580-il | 50,000 | 5 | 24.4 at α=9° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e580-il | 100,000 | 9 | 52.1 at α=10° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e580-il | 100,000 | 5 | 54.4 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e580-il | 200,000 | 9 | 76.1 at α=8° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e580-il | 200,000 | 5 | 76.1 at α=6.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e580-il | 500,000 | 9 | 107.4 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e580-il | 500,000 | 5 | 102 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e580-il | 1,000,000 | 9 | 131.4 at α=5.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e580-il | 1,000,000 | 5 | 120.7 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e555-il | 50,000 | 9 | 27.8 at α=10.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e555-il | 50,000 | 5 | 32.8 at α=8.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e555-il | 100,000 | 9 | 51.2 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e555-il | 100,000 | 5 | 51.2 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e555-il | 200,000 | 9 | 69.1 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e555-il | 200,000 | 5 | 67.1 at α=6.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e555-il | 500,000 | 9 | 93.4 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e555-il | 500,000 | 5 | 86.4 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e555-il | 1,000,000 | 9 | 110.7 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e555-il | 1,000,000 | 5 | 99.7 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e591-il | 50,000 | 9 | 10 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e591-il | 50,000 | 5 | 34.4 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e591-il | 100,000 | 9 | 52.2 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e591-il | 100,000 | 5 | 57.2 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e591-il | 200,000 | 9 | 77.2 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e591-il | 200,000 | 5 | 76.5 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e591-il | 500,000 | 9 | 107.3 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e591-il | 500,000 | 5 | 99.5 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e591-il | 1,000,000 | 9 | 129.9 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e591-il | 1,000,000 | 5 | 118.7 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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