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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(fx77w270s-il) FX 77-W-270S | Wortmann FX 77-W-270S airfoil for use on wind turbines (W) Max thickness 27.1% at 33.9% chord Max camber 4.2% at 27.9% chord | Remove Airfoil details Airfoil plotter |
(fx78k140a20-il) FX 78-K-140 A/20 | Wortmann FX 78-K-140 airfoil for use with flaps (K) A/20 Max thickness 14.1% at 43.5% chord Max camber 4.4% at 43.5% chord | Remove Airfoil details Airfoil plotter |
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Polars for (fx77w270s-il,fx78k140a20-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| fx77w270s-il | 50,000 | 9 | 1.6 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx77w270s-il | 50,000 | 5 | 2 at α=8.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx77w270s-il | 100,000 | 9 | 1.2 at α=6.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx77w270s-il | 100,000 | 5 | 9 at α=3.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx77w270s-il | 200,000 | 9 | 10.3 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx77w270s-il | 200,000 | 5 | 34.2 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx77w270s-il | 500,000 | 9 | 62.1 at α=11.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx77w270s-il | 500,000 | 5 | 73.4 at α=10° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx77w270s-il | 1,000,000 | 9 | 101.7 at α=11.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx77w270s-il | 1,000,000 | 5 | 106.5 at α=10.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx78k140a20-il | 50,000 | 9 | 16.8 at α=13° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx78k140a20-il | 50,000 | 5 | 15.8 at α=11.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx78k140a20-il | 100,000 | 9 | 25.4 at α=10° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx78k140a20-il | 100,000 | 5 | 27.8 at α=9.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx78k140a20-il | 200,000 | 9 | 54.6 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx78k140a20-il | 200,000 | 5 | 57.5 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx78k140a20-il | 500,000 | 9 | 118.9 at α=6.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx78k140a20-il | 500,000 | 5 | 111.3 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| fx78k140a20-il | 1,000,000 | 9 | 147.4 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| fx78k140a20-il | 1,000,000 | 5 | 142.9 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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