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Your Reynold number range is 50,000 to 1,000,000. (set)

Airfoil Comparison

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Airfoil comparison (mh20-il,e58-il,mh27-il,e654-il,goe363-il,s3021-il,goe397-il)
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    (mh20-il) MH 20 9.01%

Martin Hepperle MH 20 for F3D Pylon Racing
Max thickness 9% at 32.2% chord
Max camber 1.9% at 37.3% chord
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    (e58-il) EPPLER 58 AIRFOIL

Eppler E58 low Reynolds number airfoil
Max thickness 5.6% at 30% chord
Max camber 6.5% at 50% chord
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    (mh27-il) MH 27 11.99%

Martin Hepperle MH 27 for F3D Pylon Racing (extended laminar flow)
Max thickness 12% at 42.4% chord
Max camber 1.4% at 42.4% chord
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    (e654-il) EPPLER 654 AIRFOIL

Eppler E654 sailplane airfoil
Max thickness 17.2% at 36.1% chord
Max camber 4.9% at 46.5% chord
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    (goe363-il) GOE 363 AIRFOIL

Gottingen 363 airfoil
Max thickness 11.1% at 19.8% chord
Max camber 5.7% at 39.8% chord
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    (s3021-il) S3021-095-84

Selig S3021 low Reynolds number airfoil
Max thickness 9.5% at 30% chord
Max camber 2.5% at 39.2% chord
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    (goe397-il) GOE 397 AIRFOIL

Gottingen 397 airfoil
Max thickness 5.1% at 30% chord
Max camber 4% at 40% chord
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Used for printing plan. A4 landscape approx 280mm
Used for printing plan. A4 landscape approx 180mm

Polars for (mh20-il,e58-il,mh27-il,e654-il,goe363-il,s3021-il,goe397-il)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   mh20-il50,000933.7 at α=7.25°Mach=0 Ncrit=9Xfoil predictionDetails
   mh20-il50,000534.9 at α=6.75°Mach=0 Ncrit=5Xfoil predictionDetails
   mh20-il100,000950.7 at α=6.5°Mach=0 Ncrit=9Xfoil predictionDetails
   mh20-il100,000550.1 at α=5.75°Mach=0 Ncrit=5Xfoil predictionDetails
   mh20-il200,000968.7 at α=5.5°Mach=0 Ncrit=9Xfoil predictionDetails
   mh20-il200,000564.6 at α=5.25°Mach=0 Ncrit=5Xfoil predictionDetails
   mh20-il500,000991.6 at α=4.5°Mach=0 Ncrit=9Xfoil predictionDetails
   mh20-il500,000581.5 at α=4.75°Mach=0 Ncrit=5Xfoil predictionDetails
   mh20-il1,000,0009105.5 at α=4.25°Mach=0 Ncrit=9Xfoil predictionDetails
   mh20-il1,000,000593.3 at α=4.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e58-il50,000946.1 at α=6.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e58-il50,000544.1 at α=6.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e58-il100,000970.8 at α=5.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e58-il100,000568.4 at α=5.25°Mach=0 Ncrit=5Xfoil predictionDetails
   e58-il200,0009108.2 at α=4.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e58-il200,0005106.6 at α=3.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e58-il500,0009175.1 at α=3°Mach=0 Ncrit=9Xfoil predictionDetails
   e58-il500,0005166.6 at α=1.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e58-il1,000,0009235.7 at α=1.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e58-il1,000,0005160.8 at α=0°Mach=0 Ncrit=5Xfoil predictionDetails
   mh27-il50,000933.6 at α=6.5°Mach=0 Ncrit=9Xfoil predictionDetails
   mh27-il50,000530.7 at α=6.5°Mach=0 Ncrit=5Xfoil predictionDetails
   mh27-il100,000949.9 at α=5.5°Mach=0 Ncrit=9Xfoil predictionDetails
   mh27-il100,000546.4 at α=5°Mach=0 Ncrit=5Xfoil predictionDetails
   mh27-il200,000969.9 at α=4.5°Mach=0 Ncrit=9Xfoil predictionDetails
   mh27-il200,000554.7 at α=3.75°Mach=0 Ncrit=5Xfoil predictionDetails
   mh27-il500,000973.4 at α=3.25°Mach=0 Ncrit=9Xfoil predictionDetails
   mh27-il500,000554.7 at α=2.5°Mach=0 Ncrit=5Xfoil predictionDetails
   mh27-il1,000,000973.1 at α=2.25°Mach=0 Ncrit=9Xfoil predictionDetails
   mh27-il1,000,000561.2 at α=7.5°Mach=0 Ncrit=5Xfoil predictionDetails
   e654-il50,00095.1 at α=10°Mach=0 Ncrit=9Xfoil predictionDetails
   e654-il50,000512.8 at α=12.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e654-il100,000932.7 at α=12.75°Mach=0 Ncrit=9Xfoil predictionDetails
   e654-il100,000528.3 at α=10.75°Mach=0 Ncrit=5Xfoil predictionDetails
   e654-il200,000970.6 at α=9°Mach=0 Ncrit=9Xfoil predictionDetails
   e654-il200,000571.4 at α=7.25°Mach=0 Ncrit=5Xfoil predictionDetails
   e654-il500,0009122.5 at α=7.5°Mach=0 Ncrit=9Xfoil predictionDetails
   e654-il500,0005118 at α=6°Mach=0 Ncrit=5Xfoil predictionDetails
   e654-il1,000,0009158.6 at α=6.25°Mach=0 Ncrit=9Xfoil predictionDetails
   e654-il1,000,0005145.4 at α=4.75°Mach=0 Ncrit=5Xfoil predictionDetails
   goe363-il50,000932.7 at α=4.5°Mach=0 Ncrit=9Xfoil predictionDetails
   goe363-il50,000537 at α=5°Mach=0 Ncrit=5Xfoil predictionDetails
   goe363-il100,000953.3 at α=2.75°Mach=0 Ncrit=9Xfoil predictionDetails
   goe363-il100,000552.3 at α=3.25°Mach=0 Ncrit=5Xfoil predictionDetails
   goe363-il200,000970.1 at α=2°Mach=0 Ncrit=9Xfoil predictionDetails
   goe363-il200,000565.3 at α=5.75°Mach=0 Ncrit=5Xfoil predictionDetails
   goe363-il500,000989.5 at α=7.25°Mach=0 Ncrit=9Xfoil predictionDetails
   goe363-il500,000588.2 at α=6.25°Mach=0 Ncrit=5Xfoil predictionDetails
   goe363-il1,000,0009110.5 at α=6.25°Mach=0 Ncrit=9Xfoil predictionDetails
   goe363-il1,000,0005104.8 at α=5.25°Mach=0 Ncrit=5Xfoil predictionDetails
   s3021-il50,000932.2 at α=8.25°Mach=0 Ncrit=9Xfoil predictionDetails
   s3021-il50,000537.6 at α=7°Mach=0 Ncrit=5Xfoil predictionDetails
   s3021-il100,000953.7 at α=6.75°Mach=0 Ncrit=9Xfoil predictionDetails
   s3021-il100,000555.1 at α=6.25°Mach=0 Ncrit=5Xfoil predictionDetails
   s3021-il200,000974.6 at α=6°Mach=0 Ncrit=9Xfoil predictionDetails
   s3021-il200,000571.6 at α=5.5°Mach=0 Ncrit=5Xfoil predictionDetails
   s3021-il500,0009101.4 at α=5°Mach=0 Ncrit=9Xfoil predictionDetails
   s3021-il500,000591.6 at α=4.75°Mach=0 Ncrit=5Xfoil predictionDetails
   s3021-il1,000,0009119.7 at α=4.25°Mach=0 Ncrit=9Xfoil predictionDetails
   s3021-il1,000,0005105.4 at α=4°Mach=0 Ncrit=5Xfoil predictionDetails
   goe397-il50,000942.8 at α=5.75°Mach=0 Ncrit=9Xfoil predictionDetails
   goe397-il50,000543 at α=5.75°Mach=0 Ncrit=5Xfoil predictionDetails
   goe397-il100,000961.4 at α=5.25°Mach=0 Ncrit=9Xfoil predictionDetails
   goe397-il100,000561 at α=4.75°Mach=0 Ncrit=5Xfoil predictionDetails
   goe397-il200,000981.7 at α=4.75°Mach=0 Ncrit=9Xfoil predictionDetails
   goe397-il200,000579.1 at α=4°Mach=0 Ncrit=5Xfoil predictionDetails
   goe397-il500,0009110 at α=3.75°Mach=0 Ncrit=9Xfoil predictionDetails
   goe397-il500,0005102.1 at α=3°Mach=0 Ncrit=5Xfoil predictionDetails
   goe397-il1,000,0009129.9 at α=3°Mach=0 Ncrit=9Xfoil predictionDetails
   goe397-il1,000,000597.6 at α=3.75°Mach=0 Ncrit=5Xfoil predictionDetails
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