Flaps Flashcards
The primary purpose of flaps:
Give required lift at a lower airspeed
Flaps/other parts whose operation cause additional drag or greater rate of descent on purpose are given description?
___ Augmentation
Flaps help increase what two components of Lift generation?
C-Lift and S
Asymmetrical flap extension will have what flying impact?
Roll towards the wing with lesser flap extnded
Flaps increase lift simply by doing what to the aerofoil?
Increasing its camber
Flap extension does what to the Centre of Pressure?
Moves aft
Flap extension does what to the Lift/Drag ratio?
Decreases it
A decreasing Lift/Drag ratio from flap extension has what impact on engine failure emergencies?
Glide distance is decreased
What happens to Lift and Drag ratios as flaps are extended?
Drag increases at a greater rate than Lift
What happens to the stalling AoA as flaps are extended?
It lowers
The stalling AoA reducing for an aircraft indicates what?
Flaps extension
On a C-Lift/AoA graph, what happens to the graph line as flaps are extended
It goes left and up (C-Lift increases but AoA reduces)
A reduced stalling AoA with flaps extended has what impact on flight performance?
The aircraft will stall at a lower nose attitude with flaps extended
Flap reduction does what to the wing’s CP?
Moves it forward (due to reduction in camber)
The landing speed must be at least ___ of the V-Stall?
1.3
Flap extension does what the pilot’s view?
Increase/deepen it
Why is the pilot’s view increased/deepened with flap extension?
Required nose attitude is lower
Slotted flaps’ design basics?
Slots allow high-energy air to flow from beneath the wing to the upper surface, delaying the stall
Fowler flaps move in what manner?
Backwards and downwards
Often, leading-edge flaps allow high-energy air to do what?
Flow from beneath the wing to the upper surface, delaying the separation and thus the stall
