Good luck!

1. 1) Which design feature helps a wing stall at the root first?

   Manufacturers often add wing twist (also known as wing washout) so that the wing root is at a higher angle of incidence than the wing tip. The design causes the root to stall first so aileron/roll authority is maintained in a stall.

   Manufacturers often add wing twist (also known as wing washout) so that the wing root is at a higher angle of incidence than the wing tip. The design causes the root to stall first so aileron/roll authority is maintained in a stall.

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2. 2) What is a characteristic of a Frise-type aileron?

   This type of aileron, usually paired with a differential aileron, extends the leading edge of the upward deflecting aileron into the air stream below the wing to add drag. This drag counteracts the drag created on the downward deflecting aileron, which helps prevent adverse yaw.

   This type of aileron, usually paired with a differential aileron, extends the leading edge of the upward deflecting aileron into the air stream below the wing to add drag. This drag counteracts the drag created on the downward deflecting aileron, which helps prevent adverse yaw.

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3. 3) Which design feature helps to reduce wingtip vortices?

   Winglets help to reduce wingtip vortices by creating forward lift. This opposes some of the induced drag created by the wings during high angle-of-attack operations such as during takeoff and high altitude cruise. 

   Winglets help to reduce wingtip vortices by creating forward lift. This opposes some of the induced drag created by the wings during high angle-of-attack operations such as during takeoff and high altitude cruise. 

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4. 4) What type of flap increases the wing's area when it is extended?
   

   Fowler flaps increase the area of your wing by extending out on rails or tracks. Fowler flaps often have a series of slots to add energy to the airflow as well - they're called slotted-Fowler flaps.

   Fowler flaps increase the area of your wing by extending out on rails or tracks. Fowler flaps often have a series of slots to add energy to the airflow as well - they're called slotted-Fowler flaps.

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5. 5) Extending flaps ______ lift and _______ drag.

   Flaps increase lift, and as that lift increases, so does drag.

   Flaps increase lift, and as that lift increases, so does drag.

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