CPL PoF Lift Augmentation Revision

Which of the following is a type of lift augmentation

(Select all that apply)

• Leading edge slats

• Trailing edge flaps

• Boundary layer control

• Ailerons

Slats are only used at:

• High speeds

• Low AoA

• High AoA

• Low speeds

The basic purpose of lift augmentation devices is:

• To provide an increase in lift at high airspeeds

• To provide an increase in lift at low airspeeds

• To improve the lift to drag ratio

• To decrease the amount to lift produces

Trailing edge flaps:

• Increase the lift/drag ratio

• Decrease the drag produced therefore improves the lift/drag ratio

• Decreases the drag produced improving the lift/drag ratio

• Increase the lift and drag produced decreasing the lift/drag ratio

How does lowering trailing edge flaps effect the CoP?

• The CoP with move rearwards and towards the wingtips

• The CoP will move rearwards and towards the wingroot

• The CoP will move forwards and towards the wingroot

• The CoP will not move until the final stage of flap is lowered. It will then move rearward and inward.

Which of the following give the greatest increase in CL?

• Plain Flap

• Zap Flap

• Slotted Flap

• Fowler Flap

Lowering trailing edge flap will

• Lower the stalling angle

• Increase the stalling angle

• Could damage the flap is airspeed is to low

• Invert the stalling angle

Deploying slats will:

• Lower the stalling angle

• Increase the stalling angle

• Could damage the slat if the airspeed is to low

• Invert the stall angle

With regards the the slots created my some leading and trailing edge devices select the correct statement:

• Slots allow the spanwise flow another path from the lower surface to the upper surface reducing induced drag.

• Slots allow airflow to flow through them to the upper surface decreasing lift by decreasing the static pressure on the lower surface

• Slots allow air to flow through them re-energizing the upper boundary layer delaying separation and increasing lift

• Slots allow air to flow through them re-energizing the upper boundary layer promoting separation and increasing lift

Select all the correct statements regarding spoilers:

• Decrease lift and drag. When used during landing increase braking effectiveness

• Are rarely used on modern aircraft

• Increase lift and drag. When used during landing decrease braking effectiveness

• Are only effective at low airspeeds

• Cannot be used to roll the aircraft as it will cause to much loading and could cause structural damage to the wing