General Aviation Externally Flapped Airfoil

These data are purely theoretical, and were generated using the MCARFA program, a 2D inviscid panel code with and integral boundary layer method. Lift coefficients were crudely corrected for separation, but no corrections were applied to any of the other data. These data are presented for educational purposes only. Basing any aircraft design on these data is not advised.

ChartObject Shape
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Deflection: 20 degrees

ChartObject Velocities
Main: GA30-612  Flap: GA37-315   25% of Main Chord
Chord Reynolds Number: 2,000,000
Deflection: 20 degrees
Angle of Attack Variation (degrees)

ChartObject Shape
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Deflection: 15 degrees

ChartObject Velocities
Main: GA30-612  Flap: GA37-315   25% of Main Chord
Chord Reynolds Number: 2,000,000
Deflection: 15 degrees
Angle of Attack Variation (degrees)

ChartObject Shape
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Deflection: 10 degrees

ChartObject Velocities
Main: GA30-612  Flap: GA37-315   25% of Main Chord
Chord Reynolds Number: 2,000,000
Deflection: 10 degrees
Angle of Attack Variation (degrees)

ChartObject Shape
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Deflection: 5 degrees

ChartObject Velocities
Main: GA30-612  Flap: GA37-315   25% of Main Chord
Chord Reynolds Number: 2,000,000
Deflection: 5 degrees
Angle of Attack Variation (degrees)

ChartObject Shape
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Deflection: 0 degrees

ChartObject Velocities
Main: GA30-612  Flap: GA37-315   25% of Main Chord
Chord Reynolds Number: 2,000,000
Deflection: 0 degrees
Angle of Attack Variation (degrees)

ChartObject Shape
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Deflection: -5 degrees

ChartObject Velocities
Main: GA30-612  Flap: GA37-315   25% of Main Chord
Chord Reynolds Number: 2,000,000
Deflection: -5 degrees
Angle of Attack Variation (degrees)

ChartObject Shape
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Deflection: -10 degrees

ChartObject Velocities
Main: GA30-612  Flap: GA37-315   25% of Main Chord
Chord Reynolds Number: 2,000,000
Deflection: -10 degrees
Angle of Attack Variation (degrees)

ChartObject Lift Curve
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000

ChartObject Drag By Squire Young Formula
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000

ChartObject Drag By Squire Young Formula
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000

ChartObject Quarter Chord Pitching Moment
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000

ChartObject Quarter Chord Pitching Moment
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000

ChartObject Flap Element Aerodynamic Moment
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Flap Element Axial Load
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Flap Element Normal Load
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Main Element Aerodynamic Moment
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Main Element Axial Load
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Main Element Normal Load
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Flap Element Aerodynamic Moment
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Flap Element Axial Load
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Flap Element Normal Load
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Main Element Aerodynamic Moment
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Main Element Axial Load
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Main Element Normal Load
Main: GA30-612  Flap: GA37-315  25% of Main Chord
Main Pivot: (1.05,-0.05)*Main Chord 
Flap Pivot: (0.25,0.00)*Flap Chord
Chord Reynolds Number = 2,000,000
No Separation Effects Modelled

ChartObject Main Element Aerodynamic Moment
Main: C506F  Flap: F501  25% of Main Chord
Main Pivot: (1.035,-0.019)*Main Chord 
Flap Pivot: (0.250,0.116)*Flap Chord
Chord Reynolds Number = 730,000
No Separation Effects Modelled

ChartObject Flap Element Aerodynamic Moment
Main: C506F  Flap: F501  25% of Main Chord
Main Pivot: (1.035,-0.019)*Main Chord 
Flap Pivot: (0.250,0.116)*Flap Chord
Chord Reynolds Number = 730,000
No Separation Effects Modelled



Last Updated on 4/24/99
By Thomas E. Speer
Email: tspeer@gte.net