Discussion
The __________ effect is the name given to the rolling moment a sideslip produces.
Answer: A
Correct answer: dihedral
The dihedral effect is the rolling moment produced by a sideslip, written \( C_{l\beta} \), and it takes its name from the geometric dihedral that is its most visible source.
The name is a little misleading, since geometric dihedral is only one contributor: wing sweep, wing position on the fuselage, and the fin's side force acting above the rolling axis all add to it. Designers therefore speak of effective dihedral - the total, expressed as the geometric angle that would produce the same moment.
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