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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(goe81-il) GOE 81 AIRFOIL | Gottingen 81 airfoil Max thickness 7.4% at 29.9% chord Max camber 6.3% at 29.9% chord | Remove Airfoil details Airfoil plotter |
(goe409-il) GOE 409 AIRFOIL | Gottingen 409 airfoil Max thickness 12.7% at 30% chord Max camber 0% at 0% chord | Remove Airfoil details Airfoil plotter |
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Polars for (goe81-il,goe409-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| goe81-il | 50,000 | 9 | 31.3 at α=9.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe81-il | 50,000 | 5 | 42.1 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe81-il | 100,000 | 9 | 61.7 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe81-il | 100,000 | 5 | 65.1 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe81-il | 200,000 | 9 | 89.3 at α=-0.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe81-il | 200,000 | 5 | 83.4 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe81-il | 500,000 | 9 | 114.1 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe81-il | 500,000 | 5 | 102.5 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe81-il | 1,000,000 | 9 | 133.7 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe81-il | 1,000,000 | 5 | 104.8 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe409-il | 50,000 | 9 | 28.7 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe409-il | 50,000 | 5 | 26.6 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe409-il | 100,000 | 9 | 38.6 at α=3.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe409-il | 100,000 | 5 | 32.5 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe409-il | 200,000 | 9 | 40.9 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe409-il | 200,000 | 5 | 37.7 at α=6.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe409-il | 500,000 | 9 | 46.5 at α=7.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe409-il | 500,000 | 5 | 50.7 at α=9.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| goe409-il | 1,000,000 | 9 | 64.2 at α=13° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| goe409-il | 1,000,000 | 5 | 70.5 at α=11.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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