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EPPLER 657 AIRFOIL (e657-il)

EPPLER 657 AIRFOIL - Eppler E657 sailplane airfoil


Airfoil e657-il
Details Dat file Parser  
(e657-il) EPPLER 657 AIRFOIL
Eppler E657 sailplane airfoil
Max thickness 15.6% at 37% chord.
Max camber 4.6% at 47.6% chord
Source UIUC Airfoil Coordinates Database
Source dat file
The dat file is in Lednicer format
EPPLER 657 AIRFOIL
       35.       38.

 0.0000100 0.0003000
 0.0001300 0.0019800
 0.0006700 0.0046700
 0.0023900 0.0094000
 0.0091100 0.0200100
 0.0200500 0.0314100
 0.0351300 0.0431500
 0.0542600 0.0548600
 0.0773100 0.0662700
 0.1041000 0.0771200
 0.1344200 0.0872100
 0.1680100 0.0963500
 0.2045600 0.1043800
 0.2437500 0.1111900
 0.2852000 0.1166400
 0.3285100 0.1206500
 0.3732400 0.1231300
 0.4189500 0.1240200
 0.4651800 0.1232500
 0.5114100 0.1207300
 0.5572200 0.1162900
 0.6023100 0.1097200
 0.6466300 0.1008000
 0.6906000 0.0897700
 0.7342600 0.0776100
 0.7769300 0.0652200
 0.8178800 0.0531700
 0.8563200 0.0419100
 0.8914601 0.0317600
 0.9225500 0.0229100
 0.9488900 0.0153700
 0.9700800 0.0089900
 0.9860700 0.0039900
 0.9963800 0.0009500
 1.0000000 0.0000000

 0.0000100 0.0003000
 0.0000600 -.0012600
 0.0001700 -.0019900
 0.0003300 -.0026800
 0.0005600 -.0033100
 0.0009000 -.0039100
 0.0013300 -.0045000
 0.0018400 -.0051000
 0.0030800 -.0062900
 0.0045900 -.0074600
 0.0073000 -.0092100
 0.0131000 -.0121500
 0.0285800 -.0174300
 0.0493800 -.0220100
 0.0752600 -.0258300
 0.1059700 -.0288600
 0.1412000 -.0311300
 0.1805600 -.0326700
 0.2236300 -.0335300
 0.2699100 -.0337800
 0.3188600 -.0334800
 0.3698900 -.0326600
 0.4223900 -.0313700
 0.4756900 -.0296200
 0.5291800 -.0273500
 0.5823000 -.0245700
 0.6344800 -.0212600
 0.6851600 -.0174400
 0.7338700 -.0129500
 0.7884500 -.0077800
 0.8254700 -.0027600
 0.8674600 0.0012700
 0.9055700 0.0037900
 0.9386300 0.0046000
 0.9653700 0.0038100
 0.9847000 0.0021300
 0.9962000 0.0006100
 1.0000000 0.0000000
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Lednicer format dat file
Selig format dat file

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Polars for EPPLER 657 AIRFOIL (e657-il)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   e657-il50,00097.5 at α=11°Mach=0 Ncrit=9Xfoil predictionDetails
   e657-il50,000518.7 at α=12°Mach=0 Ncrit=5Xfoil predictionDetails
   e657-il100,000941.7 at α=11°Mach=0 Ncrit=9Xfoil predictionDetails
   e657-il100,000535.3 at α=10°Mach=0 Ncrit=5Xfoil predictionDetails
   e657-il200,000972 at α=8.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e657-il200,000570.2 at α=7.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e657-il500,0009126.2 at α=6.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e657-il500,0005117.8 at α=5.25°Mach=0 Ncrit=5Xfoil predictionDetails
   e657-il1,000,0009160.6 at α=5.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e657-il1,000,0005145 at α=3.75°Mach=0 Ncrit=5Xfoil predictionDetails
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