FLEET velocimetry for aerodynamics
Long-lasting emission from femtosecond excitation of nitrogen-based flows shows promise
as a useful mechanism for a molecular tagging velocimetry instrument. The technique …
as a useful mechanism for a molecular tagging velocimetry instrument. The technique …
Application of femtosecond-laser tagging for unseeded velocimetry in a large-scale transonic cryogenic wind tunnel
Femtosecond laser electronic excitation tagging (FLEET) velocimetry was applied in the
National Transonic Facility and assessed for its use in providing quantitative velocity …
National Transonic Facility and assessed for its use in providing quantitative velocity …
Effect of low temperatures and pressures on signal, lifetime, accuracy and precision of femtosecond laser tagging velocimetry
Femtosecond laser electronic excitation tagging velocimetry is experimentally characterized
in pure nitrogen at pressures (0.228–101 kPa) and temperatures (72–298 K) relevant to high …
in pure nitrogen at pressures (0.228–101 kPa) and temperatures (72–298 K) relevant to high …
Self-Aligned Focusing Schlieren at the 0.3-M Transonic Cryogenic Tunnel and the National Transonic Facility
The implementation of a self-aligned focusing schlieren (SAFS) system at two cryogenic
wind tunnels at NASA Langley Research Center is discussed. Risk-reduction testing of the …
wind tunnels at NASA Langley Research Center is discussed. Risk-reduction testing of the …
Characterization of naturally-occurring particles in the NASA Langley 0.3-m Transonic Cryogenic Tunnel using PTV
RA Burns, J Gao, PM Danehy - AIAA SciTech 2024 Forum, 2024 - arc.aiaa.org
Naturally-occurring particles within the NASA Langley 0.3-m Transonic Cryogenic Tunnel
are characterized for their aerodynamic performance using particle tracking velocimetry …
are characterized for their aerodynamic performance using particle tracking velocimetry …
FLEET velocimetry in the common research model's wing wake
Femtosecond laser electronic excitation tagging was used to make velocity measurements
in the wake of the wing of the Common Research Model (CRM). Experiments were …
in the wake of the wing of the Common Research Model (CRM). Experiments were …
On the use of liquid nitrogen droplets as flow tracers in cryogenic flow facilities at NASA Langley Research Center
JE Retter, RA Burns, J Fisher, J Felver… - AIAA Scitech 2021 …, 2021 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2021-1301. vid The injection of liquid
nitrogen droplets to cool the gas temperature in cryogenic wind tunnels is discussed as a …
nitrogen droplets to cool the gas temperature in cryogenic wind tunnels is discussed as a …
Single-Component Average Velocity Profiles in the Wake of the Orion Crew Capsule at the National Transonic Facility
JE Retter, OK Tyrrell, B Moran, J Montgomery… - AIAA SCITECH 2023 …, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-2259. vid A minimally intrusive
molecular tagging instrument measured single-component average velocity profiles in two …
molecular tagging instrument measured single-component average velocity profiles in two …
Improvement of Pressure Sensitive Paint in A Cryogenic Oxygen-Poor Environment
AN Watkins, D Reese - 2023 - ntrs.nasa.gov
This report details specific improvements to the use of Pressure Sensitive Paint (PSP) in an
oxygen-poor environment, with an emphasis on cryogenic PSP in the National Transonic …
oxygen-poor environment, with an emphasis on cryogenic PSP in the National Transonic …