USNPS4 (smoothed) (usnps4-il)
USNPS4 (smoothed) - Jacobs USNPS4 (smoothed) 17.5 kW wind turbine airfoil
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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 Source UIUC Airfoil Coordinates Database Source dat file The dat file is in Selig format |
USNPS4 (smoothed) 1.000000 0.003907 0.997540 0.005014 0.990700 0.008068 0.980370 0.012414 0.966980 0.017639 0.950440 0.023567 0.930640 0.030051 0.907750 0.036881 0.882020 0.043880 0.853700 0.050907 0.823090 0.057840 0.790480 0.064595 0.756160 0.071104 0.720430 0.077285 0.683590 0.083074 0.645940 0.088414 0.607780 0.093242 0.569370 0.097513 0.530990 0.101190 0.492650 0.104261 0.454350 0.106704 0.416380 0.108480 0.378870 0.109559 0.342040 0.109899 0.306090 0.109455 0.271200 0.108174 0.237600 0.105991 0.205490 0.102829 0.175040 0.098605 0.146480 0.093236 0.119990 0.086635 0.095760 0.078740 0.073950 0.069526 0.054680 0.059112 0.038110 0.047936 0.024330 0.036543 0.013380 0.025420 0.005480 0.015034 0.000980 0.005837 0.000000 0.000174 0.000980 -0.004494 0.005480 -0.009308 0.013380 -0.012372 0.024330 -0.013940 0.038110 -0.014396 0.054680 -0.014139 0.073950 -0.013527 0.095760 -0.012851 0.119990 -0.012231 0.146480 -0.011689 0.175040 -0.011223 0.205490 -0.010819 0.237600 -0.010462 0.271200 -0.010135 0.306090 -0.009825 0.342040 -0.009519 0.378870 -0.009211 0.416380 -0.008896 0.454350 -0.008572 0.492650 -0.008238 0.530990 -0.007899 0.569370 -0.007554 0.607780 -0.007207 0.645940 -0.006862 0.683590 -0.006522 0.720430 -0.006191 0.756160 -0.005873 0.790480 -0.005571 0.823090 -0.005288 0.853700 -0.005028 0.882020 -0.004791 0.907750 -0.004581 0.930640 -0.004397 0.950440 -0.004241 0.966980 -0.004112 0.980370 -0.004007 0.990700 -0.003925 0.997540 -0.003869 1.000000 -0.003849 |
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Polars for USNPS4 (smoothed) (usnps4-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 | |
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