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Find the approximate value of wetted area Swet for given reference area of Sref=20 unit and parasite drag coefficient of 0.0028. Consider equivalent skin friction coefficient Cf as 0.003.

Find the approximate value of wetted area Swet for given reference area of Sref=20 unit and parasite drag coefficient of 0.0028. Consider equivalent skin friction coefficient Cf as 0.003. Correct Answer 18.67 unit

Wetted area Swet = Parasite drag coefficient*Sref/Cf = 0.0028*20/0.003 = 18.67 unit.

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