•Is what it says
–a) Hold the stick stationary and see what kind of
stability you have
(=stick fixed stability)
–b) Let go of the stick and see what kind of stability
you have (=stick
free stability)
–The elevator tends to ‘follow’ the airflow effectively
reducing the AoA and
therefore the amount of lift and pitch restoring moment
–So even if the glider is stable stick fixed it might be
unstable stick free
•It so happens that
–a) is related to the amount of stick movement needed
–The more stable stick fixed, the greater the movement
needed for control
–and b) is related to the amount of stick force needed
–The more stable stick free, the greater the forces
needed for control
•Read a book if you want to know any more !!!