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EPPLER 668 AIRFOIL (e668-il)

EPPLER 668 AIRFOIL - Eppler E668 sailplane airfoil


Airfoil e668-il
Details Dat file Parser  
(e668-il) EPPLER 668 AIRFOIL
Eppler E668 sailplane airfoil
Max thickness 13.9% at 37.3% chord.
Max camber 4% at 47.8% chord
Source UIUC Airfoil Coordinates Database
Source dat file
The dat file is in Lednicer format
EPPLER 668 AIRFOIL
       36.       37.

 0.0000100 0.0002400
 0.0001000 0.0017000
 0.0003800 0.0032500
 0.0011500 0.0057300
 0.0016800 0.0070200
 0.0077900 0.0162800
 0.0183000 0.0263200
 0.0331000 0.0367100
 0.0521000 0.0470900
 0.0751400 0.0572100
 0.1020700 0.0668500
 0.1326300 0.0758100
 0.1665900 0.0839200
 0.2036300 0.0910500
 0.2434200 0.0970700
 0.2855900 0.1018900
 0.3297200 0.1054300
 0.3754200 0.1076500
 0.4222100 0.1085000
 0.4696300 0.1079600
 0.5171900 0.1060300
 0.5644100 0.1026700
 0.6107700 0.0978500
 0.6558800 0.0914100
 0.6995100 0.0833600
 0.7414000 0.0734700
 0.7822900 0.0618300
 0.8224199 0.0501100
 0.8603500 0.0395900
 0.8948200 0.0302800
 0.9251300 0.0221600
 0.9506199 0.0151300
 0.9710500 0.0090200
 0.9864800 0.0040700
 0.9964700 0.0009900
 1.0000000 0.0000000

 0.0000100 0.0002400
 0.0000300 -.0004400
 0.0001200 -.0010900
 0.0002900 -.0016900
 0.0005400 -.0022600
 0.0009000 -.0028400
 0.0013300 -.0034200
 0.0023800 -.0045800
 0.0036900 -.0057400
 0.0060800 -.0074700
 0.0155700 -.0121900
 0.0316700 -.0172800
 0.0529200 -.0217200
 0.0791100 -.0254200
 0.1100000 -.0283500
 0.1452800 -.0305400
 0.1846000 -.0319900
 0.2275300 -.0327600
 0.2736100 -.0328900
 0.3223100 -.0324300
 0.3730700 -.0314500
 0.4252900 -.0299800
 0.4783500 -.0280700
 0.5316100 -.0257200
 0.5844300 -.0228800
 0.6363100 -.0194900
 0.6867100 -.0155900
 0.7351700 -.0109600
 0.7819100 -.0056200
 0.8269100 -.0006300
 0.8690799 0.0029800
 0.9071200 0.0048800
 0.9398100 0.0050900
 0.9660500 0.0039600
 0.9849800 0.0021600
 0.9962700 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 668 AIRFOIL (e668-il)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   e668-il50,000931 at α=10.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e668-il50,000527 at α=9.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e668-il100,000951.6 at α=8.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e668-il100,000547.2 at α=8°Mach=0 Ncrit=5Xfoil predictionDetails
   e668-il200,000981.1 at α=7.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e668-il200,000577.2 at α=6.25°Mach=0 Ncrit=5Xfoil predictionDetails
   e668-il500,0009123 at α=5.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e668-il500,0005113.2 at α=3.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e668-il1,000,0009155.5 at α=4°Mach=0 Ncrit=9Xfoil predictionDetails
   e668-il1,000,0005135.8 at α=2.25°Mach=0 Ncrit=5Xfoil predictionDetails
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