Effects of fabrication-type roughness on turbulent skin friction at supersonic speeds

K. R. Czarnecki, John R. Sevier, Jr., Melvin M. Carmel
naca-tn-4299
Jul 1958


An investigation has been made of the effects of fabrication-type surface roughness on turbulent skin-friction drag at supersonic speeds. Insofar as the present data are concerned, it was found that fabrication of the thin-skin constructions (sandwich or honeycomb) could be done sufficiently well in practice so as to cause no increase in drag over the smooth body; however, the juncture-type roughnesses (gaps, steps, etc.) produced significant increases in drag as compared with the smooth body.

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