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EPPLER 431 AIRFOIL (e431-il)

EPPLER 431 AIRFOIL - Eppler E431 sailplane airfoil


Airfoil e431-il
Details Dat file Parser  
(e431-il) EPPLER 431 AIRFOIL
Eppler E431 sailplane airfoil
Max thickness 15.1% at 37.4% chord.
Max camber 4.2% at 42.6% chord
Source UIUC Airfoil Coordinates Database
Source dat file
The dat file is in Lednicer format
EPPLER 431 AIRFOIL
       35.       38.

 0.0000100 0.0002100
 0.0001200 0.0018100
 0.0006400 0.0043800
 0.0023800 0.0090300
 0.0090700 0.0192500
 0.0199900 0.0302700
 0.0350600 0.0416400
 0.0541600 0.0530000
 0.0771700 0.0640600
 0.1039100 0.0745600
 0.1341800 0.0842800
 0.1677000 0.0930500
 0.2042000 0.1007000
 0.2433400 0.1070900
 0.2847600 0.1121100
 0.3280600 0.1156500
 0.3728400 0.1176200
 0.4186600 0.1179300
 0.4651300 0.1164800
 0.5119000 0.1132100
 0.5586700 0.1081000
 0.6051500 0.1012400
 0.6511400 0.0927700
 0.6964900 0.0830300
 0.7408000 0.0726200
 0.7834600 0.0620200
 0.8238400 0.0515600
 0.8613099 0.0415600
 0.8952800 0.0322200
 0.9251900 0.0237600
 0.9504901 0.0162600
 0.9708999 0.0096900
 0.9863800 0.0043900
 0.9964400 0.0010800
 1.0000000 0.0000000

 0.0000100 0.0002100
 0.0000700 -.0012600
 0.0001800 -.0019400
 0.0003400 -.0025900
 0.0005700 -.0031700
 0.0009100 -.0037200
 0.0013400 -.0042600
 0.0018600 -.0048000
 0.0031200 -.0058700
 0.0046500 -.0069300
 0.0074100 -.0085100
 0.0131600 -.0110800
 0.0289000 -.0158000
 0.0501100 -.0198800
 0.0765400 -.0233400
 0.1079100 -.0261900
 0.1438400 -.0285400
 0.1838400 -.0304200
 0.2274100 -.0318600
 0.2740000 -.0328600
 0.3230200 -.0334400
 0.3738400 -.0335700
 0.4258300 -.0332200
 0.4783400 -.0323100
 0.5307100 -.0307500
 0.5822600 -.0282400
 0.6328300 -.0243600
 0.6825000 -.0192500
 0.7311200 -.0133400
 0.7785000 -.0072500
 0.8240000 -.0019000
 0.8665400 0.0020900
 0.9050000 0.0044300
 0.9382499 0.0050400
 0.9651200 0.0040900
 0.9845700 0.0023000
 0.9961700 0.0006500
 1.0000000 0.0000000
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Lednicer format dat file
Selig format dat file

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Polars for EPPLER 431 AIRFOIL (e431-il)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   e431-il50,000922.1 at α=13.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e431-il50,000519.8 at α=12°Mach=0 Ncrit=5Xfoil predictionDetails
   e431-il100,000948.3 at α=9.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e431-il100,000546.2 at α=8°Mach=0 Ncrit=5Xfoil predictionDetails
   e431-il200,000979.8 at α=8°Mach=0 Ncrit=9Xfoil predictionDetails
   e431-il200,000576.8 at α=6.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e431-il500,0009116 at α=6.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e431-il500,0005109.2 at α=5°Mach=0 Ncrit=5Xfoil predictionDetails
   e431-il1,000,0009144.4 at α=5.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e431-il1,000,0005130.2 at α=4°Mach=0 Ncrit=5Xfoil predictionDetails
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