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Airfoil Comparison

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Airfoil comparison (e49-il,e421-il,e417-il,e205-il,e639-il)
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    (e49-il) EPPLER 49 AIRFOIL

Eppler E49 low Reynolds number airfoil
Max thickness 7.2% at 38.4% chord
Max camber 6.5% at 62.2% chord
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    (e421-il) EPPLER 421 AIRFOIL

Eppler E421 high lift airfoil
Max thickness 14.5% at 26% chord
Max camber 8.6% at 37.4% chord
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    (e417-il) EPPLER 417 AIRFOIL

Eppler E417 general purpose airfoil
Max thickness 14.2% at 38.3% chord
Max camber 3.1% at 76.3% chord
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    (e205-il) E205 (10.48%)

Eppler E205 low Reynolds number airfoil
Max thickness 10.5% at 29.7% chord
Max camber 2.5% at 38.7% chord
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    (e639-il) EPPLER 639 AIRFOIL

Eppler E639 airfoil
Max thickness 12.6% at 29.2% chord
Max camber 4.8% at 29.2% chord
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Used for printing plan. A4 landscape approx 280mm
Used for printing plan. A4 landscape approx 180mm

Polars for (e49-il,e421-il,e417-il,e205-il,e639-il)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   e49-il50,000937.5 at α=7.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e49-il50,000534.3 at α=6.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e49-il100,000956.6 at α=6.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e49-il100,000550.9 at α=5°Mach=0 Ncrit=5Xfoil predictionDetails
   e49-il200,000982.3 at α=5°Mach=0 Ncrit=9Xfoil predictionDetails
   e49-il200,000565 at α=3.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e49-il500,0009119.1 at α=3.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e49-il1,000,0009155.5 at α=2.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e49-il1,000,0005123.1 at α=0.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e421-il50,00095.3 at α=8.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e421-il50,000520 at α=0.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e421-il100,000927.7 at α=1°Mach=0 Ncrit=9Xfoil predictionDetails
   e421-il100,000548 at α=5°Mach=0 Ncrit=5Xfoil predictionDetails
   e421-il200,000963 at α=4.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e421-il200,000574.8 at α=5.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e421-il500,0009107.4 at α=6.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e421-il500,0005109.9 at α=6.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e421-il1,000,0009141.1 at α=7.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e421-il1,000,0005141.3 at α=6.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e417-il50,000933.2 at α=8°Mach=0 Ncrit=9Xfoil predictionDetails
   e417-il50,000530.2 at α=7.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e417-il100,000946.8 at α=7.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e417-il100,000546 at α=6.25°Mach=0 Ncrit=5Xfoil predictionDetails
   e417-il200,000965.6 at α=5.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e417-il200,000566.1 at α=4.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e417-il500,0009103.1 at α=3.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e417-il500,000594.4 at α=2.25°Mach=0 Ncrit=5Xfoil predictionDetails
   e417-il1,000,0009135.9 at α=2.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e417-il1,000,0005112.5 at α=1°Mach=0 Ncrit=5Xfoil predictionDetails
   e205-il50,000932.6 at α=9.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e205-il50,000534.5 at α=8.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e205-il100,000953.9 at α=8.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e205-il100,000554.9 at α=7.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e205-il200,000975.6 at α=7.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e205-il200,000574 at α=6.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e205-il500,0009105.4 at α=6.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e205-il500,000598.9 at α=5.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e205-il1,000,0009128.3 at α=5.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e205-il1,000,0005116.5 at α=5°Mach=0 Ncrit=5Xfoil predictionDetails
   e639-il50,000913.3 at α=0.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e639-il50,000525.5 at α=3.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e639-il100,000932.8 at α=3°Mach=0 Ncrit=9Xfoil predictionDetails
   e639-il100,000546 at α=7.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e639-il200,000962.7 at α=11.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e639-il200,000569.3 at α=9.25°Mach=0 Ncrit=5Xfoil predictionDetails
   e639-il500,0009100.5 at α=9.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e639-il500,0005102.3 at α=8.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e639-il1,000,0009131.9 at α=8.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e639-il1,000,0005129.1 at α=7.75°Mach=0 Ncrit=5Xfoil predictionDetails
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