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SP4721LA (sp4721la-po)

SP4721LA - Saab-Pimenta High Performance low TE dB(A) noise 100 m Diameter Wind Turbine Main Airfoil in Quiet Mode of Operation


Airfoil sp4721la-po
Details Dat file Parser  
(sp4721la-po) SP4721LA
Saab-Pimenta High Performance low TE dB(A) noise 100 m Diameter Wind Turbine Main Airfoil in Quiet Mode of Operation
Max thickness 21.4% at 34.8% chord.
Max camber 4.4% at 67.6% chord
Source Poli-Wind. University of Sao Paulo
Source dat file
The dat file is in Selig format
SP4721LA
 1.00002     0.00000 
 0.99039     0.00326 
 0.97450     0.00987 
 0.95657     0.01783 
 0.93750     0.02615 
 0.91800     0.03405 
 0.89801     0.04131 
 0.87727     0.04816 
 0.85577     0.05475 
 0.83374     0.06116 
 0.81141     0.06740 
 0.78890     0.07341 
 0.76626     0.07919 
 0.74354     0.08474 
 0.72077     0.09005 
 0.69795     0.09512 
 0.67511     0.09993 
 0.65225     0.10447 
 0.62937     0.10875 
 0.60647     0.11274 
 0.58353     0.11644 
 0.56051     0.11988 
 0.53745     0.12305 
 0.51440     0.12597 
 0.49145     0.12858 
 0.46864     0.13087 
 0.44600     0.13276 
 0.42347     0.13425 
 0.40114     0.13532 
 0.37909     0.13592 
 0.35743     0.13596 
 0.33601     0.13536 
 0.31477     0.13409 
 0.29354     0.13213 
 0.27228     0.12951 
 0.25093     0.12625 
 0.22952     0.12241 
 0.20813     0.11803 
 0.18690     0.11317 
 0.16610     0.10787 
 0.14580     0.10207 
 0.12625     0.09580 
 0.10759     0.08909 
 0.09019     0.08200 
 0.07429     0.07463 
 0.06015     0.06714 
 0.04799     0.05976 
 0.03783     0.05269 
 0.02952     0.04602 
 0.02282     0.03986 
 0.01746     0.03422 
 0.01320     0.02907 
 0.00979     0.02437 
 0.00713     0.02005 
 0.00494     0.01613 
 0.00336     0.01245 
 0.00196     0.00912 
 0.00090     0.00602 
 0.00047     0.00302 
 0.00017     0.00022 
 0.00002    -0.00241 
 0.00028    -0.00500 
 0.00063    -0.00764 
 0.00211    -0.00983 
 0.00377    -0.01214 
 0.00565    -0.01460 
 0.00804    -0.01700 
 0.01089    -0.01944 
 0.01429    -0.02190 
 0.01832    -0.02441 
 0.02312    -0.02698 
 0.02889    -0.02959 
 0.03591    -0.03228 
 0.04455    -0.03507 
 0.05531    -0.03806 
 0.06864    -0.04130 
 0.08479    -0.04472 
 0.10358    -0.04823 
 0.12444    -0.05174 
 0.14662    -0.05516 
 0.16953    -0.05846 
 0.19291    -0.06163 
 0.21653    -0.06474 
 0.24008    -0.06790 
 0.26322    -0.07101 
 0.28559    -0.07382 
 0.30704    -0.07604 
 0.32786    -0.07744 
 0.34837    -0.07799 
 0.36878    -0.07767 
 0.38932    -0.07651 
 0.41005    -0.07457 
 0.43102    -0.07190 
 0.45217    -0.06856 
 0.47349    -0.06457 
 0.49501    -0.05994 
 0.51689    -0.05472 
 0.53926    -0.04900 
 0.56203    -0.04298 
 0.58496    -0.03696 
 0.60780    -0.03113 
 0.63055    -0.02556 
 0.65315    -0.02028 
 0.67566    -0.01535 
 0.69810    -0.01078 
 0.72042    -0.00660 
 0.74269    -0.00285 
 0.76486     0.00047 
 0.78693     0.00330 
 0.80884     0.00565 
 0.83050     0.00744 
 0.85190     0.00862 
 0.87299     0.00914 
 0.89376     0.00896 
 0.91418     0.00803 
 0.93417     0.00635 
 0.95354     0.00395 
 0.97192     0.00095 
 0.98870    -0.00243 
 0.99870    -0.00482 
 
Dat file parser warnings
  • Line 2 - X value too large but included: 1.00002 0.00000
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Polars for SP4721LA (sp4721la-po)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   sp4721la-po200,000963.4 at α=9°Mach=0 Ncrit=9Xfoil predictionDetails
   sp4721la-po500,000989 at α=7°Mach=0 Ncrit=9Xfoil predictionDetails
   sp4721la-po1,000,0009110.3 at α=5.5°Mach=0 Ncrit=9Xfoil predictionDetails
   sp4721la-po2,000,0009133.2 at α=4.25°Mach=0 Ncrit=9Xfoil predictionDetails
   sp4721la-po5,000,0009157.3 at α=2.75°Mach=0 Ncrit=9Xfoil predictionDetails
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