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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(dh4009sm-il) dh4009sm | Dale House DH4009 (smoothed) used on the Storm R/C aerobatic aircraft Max thickness 8.9% at 41.6% chord Max camber 0.2% at 9.6% chord | Remove Airfoil details Airfoil plotter |
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Polars for (dh4009sm-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| dh4009sm-il | 50,000 | 9 | 19.4 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| dh4009sm-il | 50,000 | 5 | 24.2 at α=3.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| dh4009sm-il | 100,000 | 9 | 27.6 at α=3° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| dh4009sm-il | 100,000 | 5 | 31.7 at α=2.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| dh4009sm-il | 200,000 | 9 | 40.3 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| dh4009sm-il | 200,000 | 5 | 34.6 at α=2.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| dh4009sm-il | 500,000 | 9 | 48.1 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| dh4009sm-il | 500,000 | 5 | 42.1 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| dh4009sm-il | 1,000,000 | 9 | 51.8 at α=2° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| dh4009sm-il | 1,000,000 | 5 | 53.4 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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