Stalling Flashcards
Reverse flow
when you have high air pressure escaping from underneath the wing, around the back of the wing
Centre of pressure
Point at which all lift acts through
Symptoms of a stall
○ High nose attitude ○ Stall warning ○ Low airspeed ○ Sloppy controls ○ Possible control buffet
Pre-manoeuvre checks - HASEL
Height - recover by 3000 ft - should be up at least 3500ft before stalling
Area - non-populated and flat grounds
Security - harnesses locked and tight
Engine- fuel pump on, mixture rich, carb heat on, engines and pressures in green
Lookout - area around and below clear, before 1st stall 360 degree lookout, each subsequent stall 90 degree
Entering a stall
○ Reference: point and height
○ Power set - carb heat
○ Maintain straight and level
○ Increase back pressure
Recovering from a stall
Relax back pressure Add full power If wing drop occurs - keep ailerons neutral and use rudder to arrest roll Airspeed - safe and increasing Set attitude for best rate of climb
How does weight affect stall speed?
Increased weight increases stall speed.
How do flaps affect stall speed?
Decrease stall speed.
How does power affect stall speed?
Decreases stall speed.
How do wings affect stall speed?
Increase stall speed.
How does load (L/W) affect stall speed?
Increases stall speed.
Vs1
44kts
AOA
16 degrees
Stalling speed definition
The speed which requires the stalling angle to produce the necessary lift. (Critical angle of attack is acquired)
Vs
50kts
