FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

What type of flap system increases both the wing area and changes the wing camber?

1. Slotted flaps

2. Split flaps

3. Fowler flaps

4. Plain flaps

The correct answer is: Fowler flaps

Fowler flaps are designed to not only increase the wing's surface area but also modify the wing's camber. This is achieved by extending both the trailing edge and the leading edge of the flap, increasing the wing area when deployed. This type of flap system is commonly used in modern aircraft to improve lift at lower speeds, such as during takeoff and landing. Slotted flaps feature a gap between the flap and the wing, allowing high-pressure air from below the wing to flow over the flap's upper surface, improving lift characteristics without significantly changing the wing's camber. Split flaps are simple hinged sections that deflect from the lower surface of the wing, increasing drag without greatly affecting the wing area or camber. Plain flaps are the simplest type of flaps that deflect from the lower surface of the wing, primarily increasing lift with a lesser impact on drag compared to other flap types.