Skin friction drag is the same as form drag. True or False?

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Multiple Choice

Skin friction drag is the same as form drag. True or False?

Explanation:
Skin friction drag and form drag are two different ways air resistance shows up on an aircraft. Skin friction drag comes from viscous shear in the air as it rubs along the surface—the boundary layer’s friction with the skin. Form drag, or pressure drag, arises from the overall pressure distribution around the body caused by its shape and flow separation. They are both kinds of parasite drag, but they come from different physical processes, so they are not the same thing. Hence, the statement is false.

Skin friction drag and form drag are two different ways air resistance shows up on an aircraft. Skin friction drag comes from viscous shear in the air as it rubs along the surface—the boundary layer’s friction with the skin. Form drag, or pressure drag, arises from the overall pressure distribution around the body caused by its shape and flow separation. They are both kinds of parasite drag, but they come from different physical processes, so they are not the same thing. Hence, the statement is false.

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