Split flap increases:

Split flap increases:

• A. Wing area and nose-down pitching moment
• B. Chord and camber and nose-up pitching moment
• C. Camber with no pitching moment
• D. Camber and creates a nose-down pitching moment

Answer: (D)

Split flaps increase the wing’s camber, which raises the lift coefficient at a given angle of attack and allows the aircraft to generate more lift at lower speeds. The flap section is located near the trailing edge and behind the wing’s aerodynamic center, so the additional lift it produces acts behind the CG and creates a nose-down pitching moment. In practice, extending split flaps gives more lift and drag, and the nose-down moment is something pilots counter with elevator input when deploying flaps.

Split flaps increase the wing’s camber, which raises the lift coefficient at a given angle of attack and allows the aircraft to generate more lift at lower speeds. The flap section is located near the trailing edge and behind the wing’s aerodynamic center, so the additional lift it produces acts behind the CG and creates a nose-down pitching moment. In practice, extending split flaps gives more lift and drag, and the nose-down moment is something pilots counter with elevator input when deploying flaps.