Which component increases lift?

Which component increases lift?

• A. Flaps
• B. Wing
• C. Fuselage
• D. Slats

Answer: (D)

Leading-edge devices that create a slot at the wing’s front edge allow the wing to generate more lift at lower speeds and higher angles of attack. Slats extend outward to form that slot, energizing airflow over the wing so it stays attached longer as speed drops. This increases the lift coefficient and postpones stall, which is why slats boost lift during takeoff and landing. While trailing-edge flaps also raise lift by increasing camber (and sometimes wing area), the device described here specifically enhances lift by modifying the leading edge. The fuselage doesn’t act to increase lift.

Leading-edge devices that create a slot at the wing’s front edge allow the wing to generate more lift at lower speeds and higher angles of attack. Slats extend outward to form that slot, energizing airflow over the wing so it stays attached longer as speed drops. This increases the lift coefficient and postpones stall, which is why slats boost lift during takeoff and landing.

While trailing-edge flaps also raise lift by increasing camber (and sometimes wing area), the device described here specifically enhances lift by modifying the leading edge. The fuselage doesn’t act to increase lift.