Heat-Transfer,Surface-Pressure,and Boundary-Layer Surveys on Conic and Biconic Bodies with Boundary-Layer Trips at Mach Number 6. Phase I.

摘要

Heat-transfer data were obtained on a 7-deg cone and a 14/7-deg biconic model to determine the minimum size distributed roughness required to bring boundary-layer transition near the model nose. Surface pressure and boundary-layer surveys were also obtained on a few configurations in an attempt to identify the difference in the characteristics of naturally turbulent boundary layers and those tripped with distributed roughness. Data were obtained at a nominal Mach number of 6 at Reynolds numbers ranging from 1,000,000 to 4,700,000 per foot. Most of the data were obtained at zero angle of attack although some data were obtained at angle of attack for a few selected bluntness/trip combinations. (Author)