Page 696 - PPL-engelsk 2025

Aircraft general knowledge

Mechanically actuated flaps are operated with a larger flap lever, which can have

different positions.

Flaps increase the curvature of the profile, giving you extra lift. This enables a
lower speed approach and, as a result, a shorter landing distance.

Fowler flaps also increase the area of the profile, and if they are designed as

slotted fowler flaps, the airflow can be forced to follow the profile and thereby

move the point where the airflow cannot follow the wing further aft.

Deploying the flaps at too high a speed can damage the flaps!

If you have to abort an approach for landing and have full flaps, then apply full

throttle and accelerate the aircraft and then follow the procedure described in
the aircraft manual.

8.3.7.4 Slots

Slots are placed on the leading edge of the wing. It can be a fixed slot or a slot

that is formed by part of the wing leading edge moving forward, thereby leaving

a slot.

Slots is designed as a constant slot along all or part of the leading edge of the

wing. Slots can also be formed when a movable wing leading edge (slat) is moved

forward, either automatically or manually.

The wing leading edge is sucked forward when the angle of attack becomes large
enough. The air will move through the slot to the upper side of the wing and

smooth the airflow, so that the lift is maintained.

Slots make it possible to fly at a higher angle of attack.

Flyveteori PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 696