1. Principles of Flight
Chapter 4 - Stalling

2. Stalling
When the angle of attack is too great the airflow over the wing cannot meet the airflow under the wing.

3. Stalling Angle
Once the air is unable to pass over the wing smoothly lift is lost.
The stalling angle varies but it is usually about 15°
The wing will always stall when it reaches the stalling angle

4. Stalling Speed Data can be found in the ‘Pilot’s Notes’ Book.
Various Factors Effect Stalling Speed
LOWER STALLING SPEED IS BETTER
Weight – Extra Weight increases stalling speed
Power – Higher the power, lower the stalling speed
Flaps lowered reduce stalling speed
Ice forms on the wing increasing stalling speed
Damaged wings increase stalling speed
Manoeuvres – steeper turns higher the stalling speed.