Hypersonic N2 boundary layer flow velocity profile measurements using FLEET

JL Hill, PS Hsu, N Jiang, SW Grib, S Roy, M Borg… - Applied Optics, 2021 - opg.optica.org
Femtosecond laser electronic excitation tagging (FLEET) velocimetry was used in the
boundary layer of an ogive-cylinder model in a Mach-6 Ludwieg tube. One-dimensional …

Optical-axis spatial sensitivity of a simulated focused laser differential interferometer

EK Benitez, MP Borg, C Rhodes, JS Jewell - AIAA Journal, 2023 - arc.aiaa.org
A focused laser differential interferometer (FLDI) simulation was used to study the sensitivity
of the FLDI technique to a variety of factors. The model takes in a series of density fields and …

Implementation of self-aligned focusing Schlieren for hypersonic boundary layer measurements

JL Hill, MP Borg, EK Benitez, CL Running… - AIAA SciTech 2023 …, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-2438. vid A self-aligned focusing
schlieren (SAFS) apparatus based on a recently published design is implemented for the …

Effect of surface cooling on second-mode dominated hypersonic boundary layer transition

R Oddo, JL Hill, MF Reeder, D Chin, J Embrador… - Experiments in …, 2021 - Springer
Experiments were performed in the low-enthalpy AFRL Mach 6 Ludwieg Tube to investigate
the effects of surface temperature on hypersonic boundary layer transition. The test article for …

Linear Instabilities over Ogive-Cylinder Models at Mach 6

A Scholten, P Paredes, J Luke Hill, M Borg, JS Jewell… - AIAA Journal, 2022 - arc.aiaa.org
Computational investigations of a tangent ogive-cylinder geometry with varying forebodies
at zero degrees angle of attack are presented. The model geometry and conditions are …

Measurements on a blunt cone-cylinder-flare at mach 6

EK Benitez, MP Borg, JL Hill, A Scholten… - AIAA SciTech 2023 …, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-1245. vid A blunt cone-cylinder-
flare model was tested at the AFRL Mach-6 Ludwieg Tube at 0-degree angle of attack …

Interaction of a tunnel-like acoustic disturbance field with a blunt cone boundary layer at Mach 8

Y Liu, M Schuabb, L Duan, P Paredes… - AIAA Aviation 2022 …, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-3250. vid The existing
measurements of laminar-to-turbulent transition over circular cones in conventional (ie," …

Hypersonic laminar, transitional, and turbulent boundary layer measurements using FLEET velocimetry

JL Hill, P Hsu, A Scholten, MF Reeder… - AIAA Scitech 2022 …, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-1704. vid Laminar, transitional, and
turbulent boundary layers over a variable bluntness ogive-cylinder were measured at 1 kHz …

Role of entropic instabilities in laminar-turbulent transition on a blunted flat plate

H Goparaju, DV Gaitonde - Physical Review Fluids, 2022 - APS
The effects of entropic instabilities on the laminar-turbulent transition dynamics of a blunted
flat plate at Mach 4 are numerically investigated through linear and nonlinear approaches …

Global reconstruction of hypersonic boundary layer disturbance modes

JL Hill, EK Benitez, MP Borg, MF Reeder - AIAA SciTech 2023 Forum, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-0869. vid The reconstruction of
globally-consistent hypersonic boundary layer disturbance modes from experimental …