What type of flaps are on the longitude?

• A. Slotted flaps
• B. Fowler flaps
• C. Plain flaps
• D. Double-slotted flaps

Answer: (B)

Flaps that are designed to maximize lift by increasing the wing’s effective area are Fowler flaps. They move backward along tracks and also rotate downward, which extends the trailing edge of the wing and increases both wing area and camber. This combination delivers a substantial lift boost at lower speeds, which is exactly what you want during takeoff and landing, while keeping drag in check at cruise speeds. On the Longitude, this flap design provides the high-lift performance needed for safe slow-speed flight without overly compromising aerodynamics in the higher-speed regime. Plain flaps only hinge downward and don’t add wing area, slotted flaps increase lift with slots but don’t extend the wing as Fowler flaps do, and double-slotted flaps add more lift with extra complexity. The Fowler mechanism strikes a balance between lift, drag, and mechanical efficiency for that aircraft.