CPL Aerodynamics · Practice

The dihedral effect is affected by fuselage shape. A circular cross-section fuselage in sideslip will create an additional contribution to dihedral effect because:

• A.the circular fuselage acts as a venturi, accelerating airflow over the lower wing and generating more lift
• B.sideslip crossflow around the circular fuselage raises the effective AoA on the upwind wing and reduces it on the downwind wing
• C.the circular fuselage stores energy in the crossflow that is later released as a restoring rolling moment
• D.the fuselage's circular cross-section reduces interference drag on the dihedral-contributing wing root