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The change in local air flow velocity will produce small change in skin friction drag.

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+1 vote
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in Aircraft Design by (701k points)
The change in local air flow velocity will produce small change in skin friction drag.

(a) True

(b) False

The question was asked in an online interview.

My question is from Aerodynamic Forces topic in division Aerodynamics of Aircraft Design

1 Answer

+1 vote
by (1.6m points)
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Best answer
Right option is (a) True

To elaborate: As the lift on the wing changes, the corresponding value of velocity at upper and lower surface will also change. This change in local flow velocity will produce small change at skin friction drag. This effect is called ‘super velocity’ effect.

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