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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(n66021-il) NACA 66-021 AIRFOIL | NACA 66(4)-021 airfoil Max thickness 21% at 45% chord Max camber 0% at 0% chord | Remove Airfoil details Airfoil plotter |
(npl9510-il) NPL 9510 AIRFOIL | NPL 9510 transonic airfoil Max thickness 11.1% at 32% chord Max camber 1.6% at 80% chord | Remove Airfoil details Airfoil plotter |
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Polars for (n66021-il,npl9510-il)
| Plot | Airfoil | Reynolds # | Ncrit | Max Cl/Cd | Description | Source | |
|---|---|---|---|---|---|---|---|
| n66021-il | 50,000 | 9 | 18.6 at α=10.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| n66021-il | 50,000 | 5 | 11 at α=13.75° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| n66021-il | 100,000 | 9 | 23.8 at α=7.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| n66021-il | 100,000 | 5 | 15.4 at α=9.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| n66021-il | 200,000 | 9 | 25.5 at α=8.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| n66021-il | 200,000 | 5 | 26.5 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| n66021-il | 500,000 | 9 | 57.7 at α=6.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| n66021-il | 500,000 | 5 | 54.1 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| n66021-il | 1,000,000 | 9 | 78.2 at α=5.25° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| n66021-il | 1,000,000 | 5 | 64.9 at α=4° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| npl9510-il | 50,000 | 9 | 15.5 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| npl9510-il | 50,000 | 5 | 17 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| npl9510-il | 100,000 | 9 | 18.4 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| npl9510-il | 100,000 | 5 | 23.3 at α=4.5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| npl9510-il | 200,000 | 9 | 25.4 at α=4° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| npl9510-il | 200,000 | 5 | 32.4 at α=5° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| npl9510-il | 500,000 | 9 | 40.3 at α=4.5° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| npl9510-il | 500,000 | 5 | 49.8 at α=7° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
| npl9510-il | 1,000,000 | 9 | 57.2 at α=7° | Mach=0 Ncrit=9 | Xfoil prediction | Details | |
| npl9510-il | 1,000,000 | 5 | 67.8 at α=7.25° | Mach=0 Ncrit=5 | Xfoil prediction | Details | |
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