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

K. R. Czarnecki, John R. Sevier, Jr., Melvin M. Carmel
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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