Skin friction on the airfoil is classified as which type of drag?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Theory of Rotary Wing Flight Test. Sharpen your skills with flashcards and multiple choice questions, with hints and explanations for each. Ace your exam with confidence!

Multiple Choice

Skin friction on the airfoil is classified as which type of drag?

Explanation:
Skin friction on the airfoil comes from viscous shear in the boundary layer as air flows over the surface. This surface-related friction is what we call profile drag—the part of parasite drag tied to the wing’s surface shape and texture. While parasite drag overall includes both skin friction and form drag (pressure drag due to shape), the specific contribution from the surface shear is described as profile drag. Induced drag, by contrast, is produced by lifting the wing and is not related to surface shear. So the best classification for skin friction is profile drag.

Skin friction on the airfoil comes from viscous shear in the boundary layer as air flows over the surface. This surface-related friction is what we call profile drag—the part of parasite drag tied to the wing’s surface shape and texture. While parasite drag overall includes both skin friction and form drag (pressure drag due to shape), the specific contribution from the surface shear is described as profile drag. Induced drag, by contrast, is produced by lifting the wing and is not related to surface shear. So the best classification for skin friction is profile drag.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy