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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(m4-il) NACA M4 AIRFOIL | NACA/Munk M-4 airfoil Max thickness 6.3% at 30% chord Max camber 2.2% at 30% chord | Remove Airfoil details Airfoil plotter |
(e210-il) E210 (13.64%) | Eppler E210 low Reynolds number airfoil Max thickness 13.6% at 32.1% chord Max camber 3.7% at 50.7% chord | Remove Airfoil details Airfoil plotter |
(e838-il) EPPLER E838 HYDROFOIL AIRFOIL | Eppler E838 hydrofoil Max thickness 18.4% at 37.2% chord Max camber 0% at 46.5% chord | Remove Airfoil details Airfoil plotter |
(arad13-il) ARA-D 13% AIRFOIL | Aeronautical Research Association/Bocci-Dowty Rotol ARA-D 13% thick propeller airfoil Max thickness 13% at 25% chord Max camber 3.6% at 30% chord | Remove Airfoil details Airfoil plotter |
(e374-il) E374 | Eppler E374 low Reynolds number airfoil Max thickness 10.9% at 34.3% chord Max camber 2% at 38.9% chord | Remove Airfoil details Airfoil plotter |
(s9027-il) S9027 (8%) | Selig S9027 (8%) symmetrical vertical stab airfoil used on the Opus R/C sailplane Max thickness 8% at 22.9% chord Max camber 0% at 0% chord | Remove Airfoil details Airfoil plotter |
(m6-il) NACA M6 AIRFOIL | NACA/Munk M-6 airfoil Max thickness 12% at 30% chord Max camber 2.2% at 30% chord | Remove Airfoil details Airfoil plotter |
(e66-il) EPPLER 66 AIRFOIL | Eppler E66 low Reynolds number airfoil Max thickness 10.1% at 28.7% chord Max camber 4.1% at 52.3% chord | Remove Airfoil details Airfoil plotter |
(s829-nr) NREL's S829 Airfoil | NREL HAWT airfoil S829 tip 16.0% Dia=20 to 40 m Re=2.0E+6 Clmax(S)=0.70 Clmax(R)=0.68 Restrained max lift coef Max thickness 16% at 48.3% chord Max camber 0.7% at 48.3% chord | Remove Airfoil details Airfoil plotter |
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Polars for (m4-il,e210-il,e838-il,arad13-il,e374-il,s9027-il,m6-il,e66-il,s829-nr)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| m4-il | 50,000 | 9 | 33.1 at α=5.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m4-il | 50,000 | 5 | 34 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m4-il | 100,000 | 9 | 45.5 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m4-il | 100,000 | 5 | 44.8 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m4-il | 200,000 | 9 | 57.3 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m4-il | 200,000 | 5 | 55.4 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m4-il | 500,000 | 9 | 71.9 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m4-il | 500,000 | 5 | 66.8 at α=4° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m4-il | 1,000,000 | 9 | 80.7 at α=3.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m4-il | 1,000,000 | 5 | 73.3 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e210-il | 50,000 | 9 | 9.8 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e210-il | 50,000 | 5 | 30.8 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e210-il | 100,000 | 9 | 52.7 at α=10.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e210-il | 100,000 | 5 | 57.1 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e210-il | 200,000 | 9 | 78.7 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e210-il | 200,000 | 5 | 79.6 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e210-il | 500,000 | 9 | 113 at α=6.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e210-il | 500,000 | 5 | 109 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e210-il | 1,000,000 | 9 | 140.3 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e210-il | 1,000,000 | 5 | 129.5 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e838-il | 50,000 | 9 | 18.9 at α=9.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e838-il | 50,000 | 5 | 16.4 at α=9.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e838-il | 100,000 | 9 | 31.5 at α=8.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e838-il | 100,000 | 5 | 29.3 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e838-il | 200,000 | 9 | 51.1 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e838-il | 200,000 | 5 | 49.6 at α=6.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e838-il | 500,000 | 9 | 73.2 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e838-il | 500,000 | 5 | 65 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e838-il | 1,000,000 | 9 | 86.3 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e838-il | 1,000,000 | 5 | 72.2 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| arad13-il | 50,000 | 9 | 25.7 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| arad13-il | 50,000 | 5 | 31.8 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| arad13-il | 100,000 | 9 | 41.8 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| arad13-il | 100,000 | 5 | 44.5 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| arad13-il | 200,000 | 9 | 56.1 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| arad13-il | 200,000 | 5 | 58.4 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| arad13-il | 500,000 | 9 | 78.6 at α=7.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| arad13-il | 500,000 | 5 | 79.4 at α=8.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| arad13-il | 1,000,000 | 9 | 97.9 at α=8.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| arad13-il | 1,000,000 | 5 | 96.4 at α=9° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e374-il | 50,000 | 9 | 34.1 at α=8° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e374-il | 50,000 | 5 | 34 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e374-il | 100,000 | 9 | 53.8 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e374-il | 100,000 | 5 | 53.2 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e374-il | 200,000 | 9 | 75 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e374-il | 200,000 | 5 | 71.8 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e374-il | 500,000 | 9 | 103.2 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e374-il | 500,000 | 5 | 91.4 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e374-il | 1,000,000 | 9 | 117.7 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e374-il | 1,000,000 | 5 | 99.9 at α=4° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9027-il | 50,000 | 9 | 22.6 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9027-il | 50,000 | 5 | 23.9 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9027-il | 100,000 | 9 | 30.6 at α=3.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9027-il | 100,000 | 5 | 32.8 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9027-il | 200,000 | 9 | 40.7 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9027-il | 200,000 | 5 | 43.3 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9027-il | 500,000 | 9 | 57.9 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9027-il | 500,000 | 5 | 59.5 at α=6.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9027-il | 1,000,000 | 9 | 71.8 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9027-il | 1,000,000 | 5 | 73.1 at α=7.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m6-il | 50,000 | 9 | 30.1 at α=9° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m6-il | 50,000 | 5 | 32 at α=8.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m6-il | 100,000 | 9 | 48.8 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m6-il | 100,000 | 5 | 48.8 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m6-il | 200,000 | 9 | 66.5 at α=7.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m6-il | 200,000 | 5 | 63.4 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m6-il | 500,000 | 9 | 87.4 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m6-il | 500,000 | 5 | 76.4 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| m6-il | 1,000,000 | 9 | 97 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| m6-il | 1,000,000 | 5 | 83.6 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e66-il | 50,000 | 9 | 40.2 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e66-il | 50,000 | 5 | 40.7 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e66-il | 100,000 | 9 | 64.6 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e66-il | 100,000 | 5 | 63.7 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e66-il | 200,000 | 9 | 91.7 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e66-il | 200,000 | 5 | 86.8 at α=4° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e66-il | 500,000 | 9 | 128.6 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e66-il | 500,000 | 5 | 113.5 at α=2.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e66-il | 1,000,000 | 9 | 153.2 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e66-il | 1,000,000 | 5 | 121.7 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 50,000 | 9 | 22.4 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 50,000 | 5 | 21 at α=7.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 100,000 | 9 | 33.1 at α=6.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 100,000 | 5 | 25.3 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 200,000 | 9 | 47.5 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 200,000 | 5 | 35.6 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 500,000 | 9 | 63 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 500,000 | 5 | 62.3 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s829-nr | 1,000,000 | 9 | 88.2 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s829-nr | 1,000,000 | 5 | 72.4 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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