Objective:

To become familiar with aircraft stability, stall/spin characteristics in training airplanes, and the importance of prompt recognition of stall indications.

Elements:

1. Three Axes of Flight
   • Lateral Stability - Pitching
   • Longitudinal Stability - Rolling
   • Vertical (Dirctional) Stability - Yawing
2. Center of Gravity Position
3. Design Characteristics
   • Stability vs. Instability
   • Maneuverability
   • Controllability
4. Stalls
5. Spins

References:

• Pilot's Handbook of Aeronautical Knowledge, pp 3-8 – 3-21

Notes:

Wing Dihedral
Geometric Twist and/or Aerodynamic Twist - changing angle of incidence from root to tip.
Angle of Incidence
Swept Wings
Dutch Roll
Keeling effect
Power on, Power off, and Accelerated Stalls
Cross controlled Stalls, Elevator Trim Stalls, and Secondary Stalls
SPIN RECOVERY:

	Power -	- IDLE
	Ailerons -	- NEUTRAL
	Elevator -	- RELEASE PRESSURE or FULL FORWARD
	Rudder -	- FULL OPPOSITE TO DIRECTION OF SPIN

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