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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(usa51-il) USA 51 AIRFOIL | USA-51 airfoil Max thickness 9.3% at 30% chord Max camber 2.6% at 30% chord | Remove Airfoil details Airfoil plotter |
(usa98-il) USA 98 AIRFOIL | USA-98 airfoil Max thickness 14.3% at 30% chord Max camber 6.4% at 50% chord | Remove Airfoil details Airfoil plotter |
(usa41-il) USA 41 AIRFOIL | USA-41 airfoil Max thickness 6.6% at 30% chord Max camber 4.5% at 40% chord | Remove Airfoil details Airfoil plotter |
(usa40-il) USA 40 AIRFOIL | USA-40 airfoil Max thickness 13.3% at 30% chord Max camber 4.2% at 40% chord | Remove Airfoil details Airfoil plotter |
(usa50-il) USA 50 AIRFOIL | USA-50 airfoil Max thickness 7% at 30% chord Max camber 2% at 40% chord | Remove Airfoil details Airfoil plotter |
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Polars for (usa51-il,usa98-il,usa41-il,usa40-il,usa50-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| usa51-il | 50,000 | 9 | 32.4 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa51-il | 50,000 | 5 | 35.2 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa51-il | 100,000 | 9 | 48.2 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa51-il | 100,000 | 5 | 48.9 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa51-il | 200,000 | 9 | 63.2 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa51-il | 200,000 | 5 | 60.3 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa51-il | 500,000 | 9 | 80.7 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa51-il | 500,000 | 5 | 73 at α=3.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa51-il | 1,000,000 | 9 | 92.1 at α=3.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa51-il | 1,000,000 | 5 | 86.2 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa98-il | 50,000 | 9 | 8.8 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa98-il | 50,000 | 5 | 26.6 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa98-il | 100,000 | 9 | 54.2 at α=9.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa98-il | 100,000 | 5 | 59.7 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa98-il | 200,000 | 9 | 84.1 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa98-il | 200,000 | 5 | 84.3 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa98-il | 500,000 | 9 | 120.3 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa98-il | 500,000 | 5 | 112.7 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa98-il | 1,000,000 | 9 | 147.4 at α=5.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa98-il | 1,000,000 | 5 | 124.3 at α=5.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa41-il | 50,000 | 9 | 41.2 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa41-il | 50,000 | 5 | 42.2 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa41-il | 100,000 | 9 | 59.8 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa41-il | 100,000 | 5 | 60.9 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa41-il | 200,000 | 9 | 79.3 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa41-il | 200,000 | 5 | 79.9 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa41-il | 500,000 | 9 | 107.8 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa41-il | 500,000 | 5 | 104.6 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa41-il | 1,000,000 | 9 | 129.2 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa41-il | 1,000,000 | 5 | 122.8 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa40-il | 50,000 | 9 | 23.3 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa40-il | 50,000 | 5 | 35.3 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa40-il | 100,000 | 9 | 50.1 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa40-il | 100,000 | 5 | 53.2 at α=6.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa40-il | 200,000 | 9 | 71.1 at α=7.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa40-il | 200,000 | 5 | 69.2 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa40-il | 500,000 | 9 | 95.4 at α=5.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa40-il | 500,000 | 5 | 82.2 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa40-il | 1,000,000 | 9 | 105.1 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa40-il | 1,000,000 | 5 | 87 at α=2.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa50-il | 50,000 | 9 | 36.4 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa50-il | 50,000 | 5 | 36.1 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa50-il | 100,000 | 9 | 51.1 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa50-il | 100,000 | 5 | 49.2 at α=3.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa50-il | 200,000 | 9 | 65.1 at α=2.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa50-il | 200,000 | 5 | 60.5 at α=3° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa50-il | 500,000 | 9 | 80.4 at α=2.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa50-il | 500,000 | 5 | 73.3 at α=2.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usa50-il | 1,000,000 | 9 | 92.3 at α=2.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usa50-il | 1,000,000 | 5 | 83.7 at α=2° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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