Enter the variables at left using the same units for all entries.|
For an aircraft to be stable in pitch, its CG must be forward of the
Neutral Point NP by a safety factor called the Static Margin, which
is a percentage of the MAC (Mean Aerodynamic Chord).
Static Margin should be between 5% and 15% for a good stability.
Low Static Margin gives less static stability but greater elevator
authority, whereas a higher Static Margin results in greater static
stability but reduces elevator authority.
Too much Static Margin makes the aircraft nose-heavy, which
may result in elevator stall at take-off and/or landing.
Whereas a low Static Margin makes the aircraft tail-heavy and
susceptible to stall at low speed, e. g. during the landing approach.
Choose Low Stabilizer Efficiency if the stab is close to the wing's wake
or behind a fat fuselage in disturbed flow. Choose T-tail for most gliders.
For wings with two different panels click here
For wings with three different panels click here
For wings with four different panels click here
For wings with five different panels click here