CPL Aerodynamics · Practice

Wing flap extension typically causes a nose-down pitching moment. The primary reason is:

• A.flap extension moves the wing's centre of pressure rearward (aft of the CG)
• B.the physical weight of the extended flap structure causes the nose to pitch down
• C.flap extension increases the tailplane's AoA through changed downwash, generating a nose-down tail force
• D.flap extension reduces the stall speed, reducing the nose-up tendency at low speed