The recent progress in high-speed (≥ 100k H z) laser diagnostics for hypersonic flows is
reviewed. Owing to the ultrahigh flow speed, a laser frequency of 100 kHz or higher is …

Instabilities generated in Mach-6 quiet flow about an axisymmetric cone-cylinder-flare
geometry with a 5∘ half-angle sharp cone were studied in the Boeing/AFOSR Mach-6 Quiet …

The effect of turbulent wind-tunnel-wall<? TeX 2pc 0pt?> boundary layers on density change
measurements obtained with focused laser differential interferometry (FLDI) was studied …

Focused laser differential interferometry (FLDI), first introduced in the 1970s, has developed
into a powerful tool for the analysis of turbulent dynamics and fluctuations in fluid flows …

In this work, a model of focused laser differential interferometry (FLDI) is derived by
incorporating the local intensity of each beam in an FLDI beam pair. We rederive some …

Hypersonic boundary-layer instability disturbance and transition experiments were
performed in the Air Force Research Laboratory Mach-6 Ludwieg Tube on a 1-m-long ogive …

Focused laser differential interferometry (FLDI) measures the phase shift corresponding to
localized fluctuations in the refractive index of a medium. The sensitivity, bandwidth, and …

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 …

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 …

An exact analytical method for recovering density disturbance spectra in multi-frequency,
multi-dimensional fields from focused laser differential interferometry (FLDI) measurements …