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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(usnps4-il) USNPS4 (smoothed) | Jacobs USNPS4 (smoothed) 17.5 kW wind turbine airfoil Max thickness 11.9% at 34.2% chord Max camber 5% at 34.2% chord | Remove Airfoil details Airfoil plotter |
(rg12a189-il) RG 12A-1.8/9.0 AIRFOIL | Rolf Girsberger RG 12A-1.8/9.0 airfoil Max thickness 9% at 34.4% chord Max camber 1.8% at 34.4% chord | Remove Airfoil details Airfoil plotter |
(s3024-il) AIRFOIL 3024 9.84% | Selig S3024 low Reynolds number airfoil Max thickness 9.8% at 30.7% chord Max camber 3% at 44.7% chord | Remove Airfoil details Airfoil plotter |
(s9037-il) S9037 (9%) | Selig S9037 (9%) low Reynolds number airfoil used on the Opus R/C sailplane Max thickness 9% at 28.5% chord Max camber 3.3% at 42.4% chord | Remove Airfoil details Airfoil plotter |
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Polars for (usnps4-il,rg12a189-il,s3024-il,s9037-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| usnps4-il | 50,000 | 9 | 32.7 at α=5.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usnps4-il | 50,000 | 5 | 37.1 at α=6.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usnps4-il | 100,000 | 9 | 55.5 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usnps4-il | 100,000 | 5 | 53.2 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usnps4-il | 200,000 | 9 | 74.3 at α=2.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usnps4-il | 200,000 | 5 | 67.2 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usnps4-il | 500,000 | 9 | 95.2 at α=1° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usnps4-il | 500,000 | 5 | 87.2 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| usnps4-il | 1,000,000 | 9 | 110.8 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| usnps4-il | 1,000,000 | 5 | 105.3 at α=6° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| rg12a189-il | 50,000 | 9 | 34 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| rg12a189-il | 50,000 | 5 | 35.9 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| rg12a189-il | 100,000 | 9 | 50.8 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| rg12a189-il | 100,000 | 5 | 49.6 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| rg12a189-il | 200,000 | 9 | 67.1 at α=4.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| rg12a189-il | 200,000 | 5 | 62.2 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| rg12a189-il | 500,000 | 9 | 86.7 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| rg12a189-il | 500,000 | 5 | 74.7 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| rg12a189-il | 1,000,000 | 9 | 96.2 at α=3.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| rg12a189-il | 1,000,000 | 5 | 83.5 at α=3.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s3024-il | 50,000 | 9 | 34.4 at α=8.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s3024-il | 50,000 | 5 | 38.3 at α=7° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s3024-il | 100,000 | 9 | 57.8 at α=6.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s3024-il | 100,000 | 5 | 57.7 at α=5.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s3024-il | 200,000 | 9 | 80.9 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s3024-il | 200,000 | 5 | 76.1 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s3024-il | 500,000 | 9 | 110.1 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s3024-il | 500,000 | 5 | 96.8 at α=4° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s3024-il | 1,000,000 | 9 | 129 at α=3.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s3024-il | 1,000,000 | 5 | 110.1 at α=3.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9037-il | 50,000 | 9 | 34.7 at α=7.75° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9037-il | 50,000 | 5 | 39.8 at α=6.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9037-il | 100,000 | 9 | 56.8 at α=6° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9037-il | 100,000 | 5 | 57.7 at α=5.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9037-il | 200,000 | 9 | 78.1 at α=5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9037-il | 200,000 | 5 | 74.3 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9037-il | 500,000 | 9 | 104.8 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9037-il | 500,000 | 5 | 95.2 at α=4.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| s9037-il | 1,000,000 | 9 | 123.2 at α=4.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| s9037-il | 1,000,000 | 5 | 110.1 at α=4.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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