It is unclear to me exactly how to determine the values to use for aileron_span_outboard and the flaps span-outboard. The description for the aileron span says, "
This is the ratio of wing length from the tip to the end of the aileron surface. A larger aileron will increase the roll moment of aileron deflection, but it will also increase the local drag generated by aileron deflection."
A ratio is a comparison of two lengths. What are the two lengths this variable is a ratio of? For the following example, is the numerator A, B, or C (or some other length)? Is the denominator the wing span, half the wing span, or half the wing span minus half the fuselage diameter (or some other length)?
The description for the flaps span-outboard variable says, "Outboard span area, as a This is how far out from the middle the flaps stretch. On most planes this will be
1.0 - aileron_span_outboard. This value needs to be matching the lift and drag added by flaps. Small flap systems should add small amounts of lift."
How far out from the middle of what? The middle of the airplane? Or should this be the percentage of the half wing span - half fuselage diameter (i.e. distance from the fuselage to the tip of one wing). Eyeballing the example picture, this would be around 0.6 or so?
Also, what are the default values for these parameters if there is no value specified in the flight_model.cfg file?