CPL Aerodynamics · Mock exam

Buffet prior to the stall is caused by:

• A.a sudden reduction in indicated airspeed as the pitot tube becomes partially blocked at stall
• B.ice formation on the leading edge, creating a rough surface that increases boundary layer drag
• C.the propeller entering a resonant vibration mode at the reduced power settings near the stall
• D.Turbulent separated airflow from the wing (especially near the stall) impacting the horizontal tail and fuselage