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EPPLER 642 AIRFOIL (e642-il)

EPPLER 642 AIRFOIL - Eppler E642 sailplane airfoil


Airfoil e642-il
Details Dat file Parser  
(e642-il) EPPLER 642 AIRFOIL
Eppler E642 sailplane airfoil
Max thickness 15.1% at 39.4% chord.
Max camber 3% at 39.4% chord
Source UIUC Airfoil Coordinates Database
Source dat file
The dat file is in Lednicer format
EPPLER 642 AIRFOIL
      32.0      30.0

 0.0001200 0.0014700
 0.0041400 0.0102700
 0.0125900 0.0202500
 0.0253600 0.0308000
 0.0423100 0.0415600
 0.0632600 0.0521800
 0.0880700 0.0623300
 0.1166000 0.0718000
 0.1486000 0.0804100
 0.1837700 0.0880300
 0.2217800 0.0945100
 0.2622700 0.0997200
 0.3048300 0.1035500
 0.3490400 0.1058800
 0.3944700 0.1066000
 0.4407300 0.1056100
 0.4873500 0.1028500
 0.5338600 0.0980700
 0.5802700 0.0908200
 0.6271700 0.0814300
 0.6744500 0.0710300
 0.7212900 0.0604800
 0.7668300 0.0502500
 0.8101900 0.0407100
 0.8505500 0.0320600
 0.8871200 0.0244100
 0.9191700 0.0177000
 0.9463000 0.0117000
 0.9684900 0.0065100
 0.9854100 0.0026800
 0.9962400 0.0005900
 1.0000000 0.0000000

 0.0001200 0.0014700
 0.0017600 -.0053600
 0.0098000 -.0110200
 0.0236600 -.0164900
 0.0429200 -.0215200
 0.0673400 -.0260200
 0.0966900 -.0299800
 0.1306400 -.0334600
 0.1687400 -.0364800
 0.2105300 -.0390200
 0.2555100 -.0410800
 0.3031300 -.0426500
 0.3528500 -.0437000
 0.4040800 -.0442500
 0.4562200 -.0442600
 0.5086500 -.0437400
 0.5607800 -.0426600
 0.6119500 -.0410300
 0.6615200 -.0387700
 0.7088500 -.0357600
 0.7533100 -.0315400
 0.7952200 -.0253900
 0.8356200 -.0179800
 0.8742400 -.0110800
 0.9097000 -.0056800
 0.9407000 -.0020700
 0.9660400 -.0002000
 0.9847500 0.0003400
 0.9961700 0.0001700
 1.0000000 0.0000000
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Lednicer format dat file
Selig format dat file

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Polars for EPPLER 642 AIRFOIL (e642-il)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   e642-il50,000921.9 at α=12.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e642-il50,000519.2 at α=12.25°Mach=0 Ncrit=5Xfoil predictionDetails
   e642-il100,000943.7 at α=10.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e642-il100,000543 at α=6.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e642-il200,000977.1 at α=8°Mach=0 Ncrit=9Xfoil predictionDetails
   e642-il200,000565.4 at α=7.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e642-il500,000998.2 at α=7.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e642-il500,000592.6 at α=6°Mach=0 Ncrit=5Xfoil predictionDetails
   e642-il1,000,0009121.4 at α=6°Mach=0 Ncrit=9Xfoil predictionDetails
   e642-il1,000,0005109.7 at α=5°Mach=0 Ncrit=5Xfoil predictionDetails
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