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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(b707a-il) BOEING 707 .08 SPAN AIRFOIL | Boeing Commercial Airplane Company model 707 airfoils Max thickness 11.4% at 24% chord Max camber 0.2% at 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 (b707a-il,e426-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| b707a-il | 50,000 | 9 | 16.3 at α=3.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| b707a-il | 50,000 | 5 | 20.7 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| b707a-il | 100,000 | 9 | 26.4 at α=6.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| b707a-il | 100,000 | 5 | 32.2 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| b707a-il | 200,000 | 9 | 43.1 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| b707a-il | 200,000 | 5 | 43.6 at α=8.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| b707a-il | 500,000 | 9 | 59.1 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| b707a-il | 500,000 | 5 | 52.4 at α=8.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| b707a-il | 1,000,000 | 9 | 64.4 at α=8° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| b707a-il | 1,000,000 | 5 | 59.4 at α=9.25° | 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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