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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(e904-il) EPPLER 904 AIRFOIL | Eppler E904 hydrofoil Max thickness 9% at 44.9% chord Max camber 1.3% at 50.4% chord | Remove Airfoil details Airfoil plotter |
(e908-il) EPPLER 908 AIRFOIL | Eppler E908 hydrofoil Max thickness 9% at 44.8% chord Max camber 2.8% at 66.3% chord | Remove Airfoil details Airfoil plotter |
(hq3514-il) HQ 3.5/14 AIRFOIL | Quabeck HQ 3.5/14 R/C sailplane airfoil Max thickness 14% at 35% chord Max camber 3.5% at 50% chord | Remove Airfoil details Airfoil plotter |
(hq3012-il) HQ 3.0/12 AIRFOIL | Quabeck HQ 3.0/12 R/C sailplane airfoil Max thickness 12% at 35% chord Max camber 3% at 50% chord | Remove Airfoil details Airfoil plotter |
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Polars for (e904-il,e908-il,hq3514-il,hq3012-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| e904-il | 50,000 | 9 | 21.6 at α=5.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e904-il | 50,000 | 5 | 24 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e904-il | 100,000 | 9 | 29.7 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e904-il | 100,000 | 5 | 41.9 at α=3.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e904-il | 200,000 | 9 | 61.5 at α=2.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e904-il | 200,000 | 5 | 53.9 at α=3° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e904-il | 500,000 | 9 | 67.1 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e904-il | 500,000 | 5 | 72.4 at α=3° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e904-il | 1,000,000 | 9 | 86.9 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e904-il | 1,000,000 | 5 | 87.7 at α=2.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e908-il | 50,000 | 9 | 22.2 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e908-il | 50,000 | 5 | 24.4 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e908-il | 100,000 | 9 | 32.2 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e908-il | 100,000 | 5 | 41.2 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e908-il | 200,000 | 9 | 47.8 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e908-il | 200,000 | 5 | 62.8 at α=3° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e908-il | 500,000 | 9 | 107.2 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e908-il | 500,000 | 5 | 91.8 at α=2° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| e908-il | 1,000,000 | 9 | 137 at α=1.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| e908-il | 1,000,000 | 5 | 117.9 at α=1° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3514-il | 50,000 | 9 | 29.4 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3514-il | 50,000 | 5 | 33.1 at α=8° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3514-il | 100,000 | 9 | 55.8 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3514-il | 100,000 | 5 | 54.4 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3514-il | 200,000 | 9 | 80 at α=5.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3514-il | 200,000 | 5 | 71.4 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3514-il | 500,000 | 9 | 100.5 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3514-il | 500,000 | 5 | 86.3 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3514-il | 1,000,000 | 9 | 112.8 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3514-il | 1,000,000 | 5 | 99.5 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3012-il | 50,000 | 9 | 34.4 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3012-il | 50,000 | 5 | 36.8 at α=7° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3012-il | 100,000 | 9 | 57.4 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3012-il | 100,000 | 5 | 56.5 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3012-il | 200,000 | 9 | 80.8 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3012-il | 200,000 | 5 | 75.1 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3012-il | 500,000 | 9 | 109.4 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3012-il | 500,000 | 5 | 88.3 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| hq3012-il | 1,000,000 | 9 | 117.1 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| hq3012-il | 1,000,000 | 5 | 98.4 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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