Attenuation of hypersonic second-mode boundary-layer instability with an ultrasonically absorptive silicon-carbide foam

CL Running, BL Bemis, JL Hill, MP Borg… - Experiments in …, 2023 - Springer
Unsteady surface pressure measurements have been carried out on a flat-plate test article in
the Air Force Research Laboratory's Mach-6 Ludwieg Tube at a negative angle of attack …

[HTML][HTML] Influence of glow discharge on evolution of disturbance in a hypersonic boundary layer: The effect of second mode

Y Zhang, C Li, C Lee - Physics of Fluids, 2020 - pubs.aip.org
This is the companion volume on the effects of artificial disturbance on the transition process
of a boundary layer over a flat plate. The artificial disturbance with the frequency in the range …

HIFLIER Hypersonic Flight Experiment: Ascent Results

MP Borg, DW Adamczak, MW Tufts - AIAA SCITECH 2025 Forum, 2025 - arc.aiaa.org
The goal of the Hypersonic Integrated Flight Research and Experimentation (HIFLIER) flight
experiment was to measure second-mode boundary-layer instabilities and subsequent …

HIFLIER Hypersonic Flight Experiment: Design, Analysis, and Ground Test

MP Borg, DW Adamczak - AIAA SCITECH 2025 Forum, 2025 - arc.aiaa.org
A new flight experiment was designed and flown with the goal of measuring second-mode
boundary-layer instabilities and subsequent transition in atmospheric flight at hypersonic …

Ultrasonically absorptive silicon-carbide foam for boundary-layer control

BL Bemis, JL Brun, CT Wanstall, JL Hill… - AIAA SCITECH 2023 …, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-0096. vid Unsteady surface
pressure measurements have been carried out on a flat-plate test article in the Air Force …

Effect of porosity on the ability of silicon-carbide foams to attenuate second-mode boundary-layer instability

BL Bemis, MC Sieve, JL Hill, MP Borg… - AIAA AVIATION 2023 …, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-3706. vid This work experimentally
investigated the second-mode boundary-layer instability over four different material inserts …

Hypersonic boundary layer treatment with wavy wall

M Ruggeri, BL Bemis, MC Sieve, CL Running… - … FORUM AND ASCEND …, 2024 - arc.aiaa.org
This work is focused on the numerical investigation of second-mode waves over different
wavy wall geometries. We used a block spectral method based on flux reconstruction …

Non-intrusive generation of instability waves in a planar hypersonic boundary layer

D Heitmann, C Kähler, R Radespiel, T Rödiger… - Experiments in …, 2011 - Springer
The aim of this work is to show the possibility of non-intrusively exciting second-mode
instability waves with arbitrary frequency and amplitude in a hypersonic, planar boundary …

Transition on hypersonic vehicles with crossflow

R Kimmel, D Adamczak, M Borg, JS Jewell, TJ Juliano… - 2017 - apps.dtic.mil
This interim technical report summarizes technical activity on AFRL 6.1 laboratory task LRIR
15RQCOR102 during fiscal year 2017. The objective of this task is to better understand …

[PDF][PDF] Installation of a System for Laser-Generated Perturbations in Hypersonic Flow

D Heitmann, C Kähler, R Radespiel - … International Symposium on …, 2008 - researchgate.net
An optical method for generating localized, controlled perturbations in hypersonic flows has
been arranged to analyze the transition mechanism at Mach 6. The setup of the optical …