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Consider equivalent skin friction coefficient as 0.0025 and Swet/Sref = 0.6. Evaluate parasite drag.

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Consider equivalent skin friction coefficient as 0.0025 and Swet/Sref = 0.6. Evaluate parasite drag.

(a) 0.0015

(b) 02.34

(c) 1.23

(d) 0.000025

I had been asked this question at a job interview.

This key question is from Aerodynamics topic in division Aerodynamics of Aircraft Design

1 Answer

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Best answer
Right option is (a) 0.0015

Best explanation: Parasite drag = equivalent skin friction coefficient*(Swet/Sref)

= 0.0025*0.6 = 0.0015.

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