Flaps Flashcards
During take off which degree of flap setting is the best?
10 degrees to 20 degrees
do all airplanes manufacturers recommend the use of flaps during take offs?
No
When can flaps be used for take offs?
with an airplane that has sufficient take-off power to overcome the extra drag that extended flaps produce
Do flaps increase drag?
yes
What happens when you bring the flap down?
the more you bring the flap down the more drag you create
How far can most flaps be extended to from the chord of the wing?
most flaps can be extended to 40 degrees
What is the setting of the degree flaps can be set to
20 degrees to 40 degrees
What is an essential function of the flaps?
to improve landing capabilities
How does flaps improve the landing capabilities?
1) steepening the glide without increasing the glide speed
2) Permit slower landing speed and act as brakes when the airplane is rolling to a stop after the landing
How does flaps help with safety of the plane?
1) less wear on undercarriage, wheels, and tires
2) speeds reduce possibility of ground looping during landing roll
What does plain and split flaps increase?
they increase lift of the wing but at the same time they also increase drag
When are plain and split valued and why?
Only when approaching to land because the extra-drag when taking off reduces acceleration
what 2 types does the slotted flaps include?
1) Fowler Flap
2) Zap Flap
what are slotted, fowler, and zap flaps used for and why?
used for take-off because produce lift in excess of drag
what is the fowler flap most considered for?
Offer the most advantages and the fewest disadvantages.
Usually used on bigger planes
What is the double slotted flaps most considered for?
smaller airplanes
What does STOL stand for?
Short-take-off and landing
What are the best flaps for when an airplane is doing a STOL?
combination of double slotted flaps and leading edge flaps
What happens when the flaps are lowered?
the C.P moves rearward creating a nose down (pitching moment)
What happens to the airplanes that has a change in airflow over the tailplane when flaps are lowered?
it creates a nose up therefore it is necessary to trim the nose down
what is the maximum flap extended speed?
it is the maximum speed that a flap must not be lowered which is displayed in most airplanes
When should the flaps raise when the airplane is coming in for landing?
The flaps should not be raised until the airplane is on the ground
When should you bring the flaps back up if the airplane misses the landing?
Should not raise the flaps until the power has been applied and the airplane has regained normal climbing speed.
Raise flaps in stages
How much flap should be used when landing?
for the purpose of safety should use the FULL FLAPS
when landing what are the 2 effects the flaps has on the wing airfoil?
both lift and drag are increased
1) lift results in a lower stalling speed and allows a lower touchdown speed
2) drag allows a steeper approach angle without increasing airspeed. Extra drag results in shorter landing roll
What are the factors of the procedure of using full flaps?
1) Airplane gross weight
2) Position of the centre of gravity
3) approach to landing
4) wind conditions
