Turning & Stalling Flashcards
Centripetal force
When turning and keeping on curved effect, this is the force acting on the body forcing it towards the centre of the turn
The horizontal component of lift provides
Centripetal force
In a banked turn of 60°, the wings produce a lift force equal to
L = ?
Remember that we need to increase lift in a turn due to loss of lift
2W
What happens to the GForce and load factor in a 60 degrees turn
G-Force is 2g, the load factor is 2
What is the load factor calculation
Lift / weight
OR:
(Wing loading in a manoeuvre) / (wing loading in straight and level)
The more bank degree,
The more load factor and g-force felt
An increase of angle of attack will make the induced drag
Greater
Since on a turn we lose height, we increase the angle of attack. What it means about airspeed
We should increase it
When turning (and increasing the angle of attack to maintain height), what happens to stall speed?
Increases
At 60° degrees bank angle the stall speed is increased by
41%
“Slipping into the turn”
The increase of induced drag on the outer wing (since it’s generating more lift) causes the nose to yaw in the direction opposite of the turn. Need to apply rudder to maintain balance.
Skidding turn
When the tail tends to skid onto the outside of the turn,
To maintain a specific radius turn, the more speed
The more bank angle required
At constant speed, the greater the bank angle,
the tighter the turn
in a constant bank angle, more airspeed will make
the radius turn larger
Rate-1 turn meaning
180° in 1 minute
Formula to estimate bank angle for a rate-1 turn considering airspeed
1/10 * airspeed + 7°
How does increased velocity affect static pressure
Static pressure decreases
What happens to the separation point with higher angle of attacks
Comes forward
pre-stall buffet (or control buffet)
The shaking of the airframe before reaching a stall
After exceeding the critical angle, when happens to the center of pressure
Moves backwards, therefore lowering the nose
How to recover from stall
Reduce angle of attack, and incase of low speed, full power
Stalling depends directly on
Angle of attack and not airspeed
If extra lift is needed (more weight) then the stalling speed will be
greater