Which term describes the curvature of the airfoil on the lower surface relative to the chord line?

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Multiple Choice

Which term describes the curvature of the airfoil on the lower surface relative to the chord line?

Explanation:
Camber is how much an airfoil curves away from its straight chord line. When you talk about a specific surface, you name which one: the curvature of the lower surface relative to the chord line is called lower camber. The upper surface’s curvature would be upper camber. Camber alone usually refers to the overall curvature of the airfoil or its mean camber line, not specifically the lower surface. The trailing edge is just the rear boundary and isn’t a measure of curvature.

Camber is how much an airfoil curves away from its straight chord line. When you talk about a specific surface, you name which one: the curvature of the lower surface relative to the chord line is called lower camber. The upper surface’s curvature would be upper camber. Camber alone usually refers to the overall curvature of the airfoil or its mean camber line, not specifically the lower surface. The trailing edge is just the rear boundary and isn’t a measure of curvature.

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