The influence of localized nitrogen transpiration on second mode instabilities in a
hypersonic boundary layer is experimentally investigated. The study is conducted using a 7 …

View Video Presentation: https://doi. org/10.2514/6.2022-3856. vid The influence of injection
gas type on second mode instabilities is researched on a 7 degree half-angle cone at Mach …

Air-blowing is one of the techniques for active flow control and thermal protection system of
hypersonic vehicles. Introducing air into the hypersonic boundary layer alters the cross …

The effect of suction and blowing on the local stability of the flat-plate boundary layer is
presented using non-normal theory. The 3D governing stability equations are derived using …

This paper presents a non-modal bi-global linear stability analysis of an incompressible flat-
plate boundary layer under the effects of oblique and non-uniform wall suction and injection …

BOUNDARY-LAYER blowing plays an essential role in the thermal protection [1], fuel
injection [2], and boundary-layer transition control [3–8] of hypersonic vehicles. The blowing …

The problem of supersonic flow over a 5 degree half-angle cone with injection of gas
through a porous section on the body into the boundary layer is studied experimentally …

Experiments were performed in a Mach 4 Ludwieg tube to examine the transition process in
flow over a sharp cone with boundary layer injection. Full-field images with nitrogen, helium …

Gas injection into supersonic flow past a 5° half-angle cone is studied with three injected
gases: helium, nitrogen, and RC318. Experiments are performed in a Mach 4 Ludwieg tube …