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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(sd7090-il) SD7090 (10%) | Selig/Donovan SD7090 low Reynolds number airfoil Max thickness 10% at 29.3% chord Max camber 1.5% at 43.6% chord | Remove Airfoil details Airfoil plotter |
(fx69pr281-il) FX 69-PR-281 | Wortmann FX 69-PR-281 airfoil Max thickness 28.1% at 22.2% chord Max camber 5.6% at 50% chord | Remove Airfoil details Airfoil plotter |
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Polars for (sd7090-il,fx69pr281-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| sd7090-il | 50,000 | 9 | 30.7 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sd7090-il | 50,000 | 5 | 34.2 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sd7090-il | 100,000 | 9 | 47.1 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sd7090-il | 100,000 | 5 | 47.6 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sd7090-il | 200,000 | 9 | 62.9 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sd7090-il | 200,000 | 5 | 60.6 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sd7090-il | 500,000 | 9 | 83.6 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sd7090-il | 500,000 | 5 | 78.3 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| sd7090-il | 1,000,000 | 9 | 99 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| sd7090-il | 1,000,000 | 5 | 92.2 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx69pr281-il | 50,000 | 9 | 3.4 at α=-5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx69pr281-il | 50,000 | 5 | 6.4 at α=1.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx69pr281-il | 100,000 | 9 | 21.5 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx69pr281-il | 100,000 | 5 | 26.1 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx69pr281-il | 200,000 | 9 | 41.1 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx69pr281-il | 200,000 | 5 | 35 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx69pr281-il | 500,000 | 9 | 49.6 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx69pr281-il | 500,000 | 5 | 47.1 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx69pr281-il | 1,000,000 | 9 | 64.7 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx69pr281-il | 1,000,000 | 5 | 61.7 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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