Nitric-Oxide Planar Laser-Induced Fluorescence Measurements in the Hypersonic Materials Environmental Test System

Autor:	Jennifer A. Inman, Paul M. Danehy, Jeffrey G. Gragg, Brett F. Bathel, Scott C. Splinter, Stephen B. Jones, Craig T. Johansen
Rok vydání:	2013
Předmět:	Flow visualization Argon Materials science Analytical chemistry Aerospace Engineering chemistry.chemical_element Molecular tagging velocimetry Nitrogen Arcjet rocket Atmosphere of Earth chemistry Planar laser-induced fluorescence Stagnation pressure Remote sensing
Zdroj:	AIAA Journal. 51:2365-2379
ISSN:	1533-385X 0001-1452
Popis:	Planar laser-induced fluorescence of naturally occurring nitric oxide has been used to provide insight into baseline flow conditions of the Hypersonic Materials Environmental Test System 400 kW arc-heated wind tunnel at NASA Langley Research Center via radial and axial velocity measurements and instantaneous flow-visualization images. This represents both the first flow-tagging velocity measurements and the first application of nitric-oxide planar laser-induced fluorescence flow visualization in an arcjet facility. Results are presented at selected facility run conditions, including some in a simulated Earth atmosphere (75% nitrogen, 20% oxygen, 5% argon) and others in a simulated Martian atmosphere (71% carbon dioxide, 24% nitrogen, 5% argon) for specific bulk enthalpies ranging from 6.5 to 18.4 MJ/kg. Flow-visualization images reveal the presence of large-scale unsteady flow structures and indicate nitric-oxide fluorescence signal over more than 70% of the core flow for specific bulk enthalpies below a...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::67b5aa68c307c694e0f398113fac7145 https://doi.org/10.2514/1.j052246 Zobrazit plný text záznamu