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Airplane Stability (Dynamic stability describes the behavior of the…
Airplane Stability
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Longitudinal axis
Lateral stability
Lateral stability is the natural ability of the airplane to recover from adisturbance in the lateral plane which is rolling about the longitudinal axis 
The wings return to it's natural position
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Low wing results in side-slip which uses
Dihedral, Wing Sweep-Back and High Keel to achive lateral stability
High wing aircraft will generally require less dihedral than a low wing due to pendulum effec
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Roll.
Yoke
yoke controls the roll movment of an airplane. Rotating the control wheel controls the ailerons and the roll axis.
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Vertical Axis
Directional Stability
If an aircraft has positive directional stability, the fuselage aligns
itself with the relative air flow.
Directional stability of an airplane is its natural tendency to recover from a disturbance after a disturbance in the yawing plane about the vertical axis
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If the airplane is diturbed by the airfolow from its nose or tail it will recover.
Stability about the normal axis
yaw
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Yaw is followed by roll in the same direction
due to the difference in speed and lift on
different wings.
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Lateral axis
Longitudinal Stability
To be longitudinally stable, an airplane must have a neutral tendancy to return to the same attitude in pitch after any disturbance a longitudinally stable airplane tends to maintain the trimed condition of flight and is therfore easy to fly in Pitch
The longitudinal stability of an airplane is determined by the size of the horizontial stabilizer and it's distance form Center of Gravity. The further the CG the greater of the horizontal satbilizer and ther for the greater the leverage effect of the horizontal stabilizer
You must always load your airplane so the actual CG position fall within the allowable range other wize the Pitch movment will not be as sufficient.
When the C.G in an airplane is located at the rear of the aft C.G limits, the airplane becomes less stable and may be unable to recover for a Stall
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Pitch attitude
Stability around the lateral axis
For climb
For cruise level
For descent