What kind of lower camber does a nonsymmetrical airfoil have?

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Prepare for the Theory of Rotary Wing Flight Test. Study with multiple choice questions; each has hints and explanations to help you get ready for your exam.

Multiple Choice

What kind of lower camber does a nonsymmetrical airfoil have?

Explanation:
An asymmetric (nonsymmetrical) airfoil has camber, and the two surfaces are not mirror images of each other, so their curvature along the chord is not the same. The upper surface typically has a different amount of curvature than the lower surface, meaning the lower camber is not equal to the upper camber. If the airfoil were symmetric, both surfaces would have zero camber and be identical, but that’s not the case here.

An asymmetric (nonsymmetrical) airfoil has camber, and the two surfaces are not mirror images of each other, so their curvature along the chord is not the same. The upper surface typically has a different amount of curvature than the lower surface, meaning the lower camber is not equal to the upper camber. If the airfoil were symmetric, both surfaces would have zero camber and be identical, but that’s not the case here.

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