Tests of Spheres with Reference to Reynolds Number, Turbulence, and Surface Roughness (1935)
NASA Technical Reports Server (NTRS) · leaf 37
N.A.C.A. Technical Memorandum No. 777 Figs. 21,22,23,24,25,26, 27,28. 60 -20 Figure 22.- Pressure curve of Figure 21.- Pressure curve of 15 cm steel 28 cm sphere in sphere in flight. still free air, touring-car and flight tests. Q4- Pru 9 0,2- 6 8 10 silt/rrt/'n, sUum/n \ p. dm ♦ 7c/t» a sphere , '… … Very rough Figure 26.- Pressure curves of -d 28 cm sphere with varying degrees of roughness; 1.2 m DVL tunnel. Perfectly smooth- Figure 27.- Effect of turbulence Surface roughness on sphere drag ^ versus sphere drag (schematically). (schematically).
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
