Matthew P. Borg

TL;DR: In this paper, heat flux and boundary-layer transition in the Boeing/AFOSR Mach-6 Quiet Tunnel were measured by means of temperature sensitive paint, and two modes of transition were observed: transition along the centerline, suspected to arise from the amplification of second-mode waves in the boundary layer, and transition roughly halfway between the center line and leading edges, probably due to the bre...

TL;DR: A 20-scale X-51A forebody model was tested in the Boeing/AFOSR Mach-6 Quiet Tunnel as discussed by the authors, and the effect of a smooth blank and two different trip strips on windward-forebody transition was measured using temperature sensitive paint and hot-wire anemometry.

TL;DR: In this paper, the authors analyzed the in-flight transition behavior of the HIFiRE-1 flight and found that the growth of first mode instabilities is weak at all trajectory points analyzed from the ascent phase, except near the cone meridian where a roughness element was placed midway along the length of the cone.

TL;DR: A 38.1-scale model of the Hypersonic International Flight Research Experimentation Program's Flight Five 2:1 elliptic cone flight vehicle was used to investigate the traveling crossflow instability in a Mach 6 quiet wind tunnel.

TL;DR: In this article, the stationary crossflow instability and traveling disturbances were experimentally investigated for the HIFiRE-5 2:1 elliptic cone geometry in Purdue University's quiet, Mach 6 wind tunnel using surfacemounted pressure transducers, temperature-sensitive paint, and oil-flow visualization.