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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(e421-il) EPPLER 421 AIRFOIL | Eppler E421 high lift airfoil Max thickness 14.5% at 26% chord Max camber 8.6% at 37.4% chord | Remove Airfoil details Airfoil plotter |
(e541-il) EPPLER 541 AIRFOIL | Eppler E541 general aviation airfoil Max thickness 16.6% at 46.2% chord Max camber 1.7% at 36.3% chord | Remove Airfoil details Airfoil plotter |
(e554-il) EPPLER 554 AIRFOIL | Eppler E554 general aviation airfoil Max thickness 18.2% at 31.8% chord Max camber 2.7% at 56.6% chord | Remove Airfoil details Airfoil plotter |
(e426-il) EPPLER 426 AIRFOIL | Eppler E426 airfoil Max thickness 10.8% at 25.5% chord Max camber 0.6% at 50.6% chord | Remove Airfoil details Airfoil plotter |
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Polars for (e421-il,e541-il,e554-il,e426-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| e421-il | 50,000 | 9 | 5.3 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e421-il | 50,000 | 5 | 20 at α=0.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e421-il | 100,000 | 9 | 27.7 at α=1° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e421-il | 100,000 | 5 | 48 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e421-il | 200,000 | 9 | 63 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e421-il | 200,000 | 5 | 74.8 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e421-il | 500,000 | 9 | 107.4 at α=6.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e421-il | 500,000 | 5 | 109.9 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e421-il | 1,000,000 | 9 | 141.1 at α=7.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e421-il | 1,000,000 | 5 | 141.3 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e541-il | 50,000 | 9 | 25.2 at α=9.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e541-il | 50,000 | 5 | 21 at α=9.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e541-il | 100,000 | 9 | 40.5 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e541-il | 100,000 | 5 | 29.3 at α=9° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e541-il | 200,000 | 9 | 46.8 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e541-il | 200,000 | 5 | 50.7 at α=6.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e541-il | 500,000 | 9 | 78.3 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e541-il | 500,000 | 5 | 79.8 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e541-il | 1,000,000 | 9 | 106.4 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e541-il | 1,000,000 | 5 | 96.7 at α=4° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e554-il | 50,000 | 9 | 4.8 at α=9.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e554-il | 50,000 | 5 | 18.1 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e554-il | 100,000 | 9 | 36.4 at α=12.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e554-il | 100,000 | 5 | 46.2 at α=9° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e554-il | 200,000 | 9 | 69 at α=10.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e554-il | 200,000 | 5 | 70.2 at α=9.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e554-il | 500,000 | 9 | 103.2 at α=9.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e554-il | 500,000 | 5 | 98.8 at α=8.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e554-il | 1,000,000 | 9 | 127.8 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e554-il | 1,000,000 | 5 | 118.5 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e426-il | 50,000 | 9 | 22.8 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e426-il | 50,000 | 5 | 26.7 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e426-il | 100,000 | 9 | 33.4 at α=5.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e426-il | 100,000 | 5 | 38.5 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e426-il | 200,000 | 9 | 48.2 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e426-il | 200,000 | 5 | 54.1 at α=8.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e426-il | 500,000 | 9 | 74.9 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e426-il | 500,000 | 5 | 74.4 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e426-il | 1,000,000 | 9 | 92.4 at α=8.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e426-il | 1,000,000 | 5 | 89 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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