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All bodies have skin-friction contribution more than that from the pressure drag.

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All bodies have skin-friction contribution more than that from the pressure drag.

(a) False

(b) True

I had been asked this question by my college professor while I was bunking the class.

Enquiry is from Turbulent Flow in section Incompressible Flow over Airfoils of Aerodynamics

1 Answer

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Correct answer is (a) False

The explanation: The given statement is incorrect. For streamlined bodies, the drag distribution is 85% and 15% for skin-friction and pressure drag respectively. But as the body becomes less streamlined, the case gets reversed. i.e for blunt bodies pressure drag is more important.

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