Species and temperature profiles of propellant flames obtained from FTIR absorption spectroscopy

C. F. Mallery, Stefan Thynell

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The use of Fourier transform infrared absorption spectroscopy to obtain species and temperature profiles within solid-propellant flames is described. Measurements were performed at a spectral resolution of 2 cm-1 and a spatial resolution of 1 mm within the flame zone of an RDX-composite propellant. A nonlinear, least-squares routine was developed to deduce the absolute species concentrations of CO, NO, H2O, CO2, HCN, CH4 and N2O as well as the rotational temperature. The deduced temperature profile revealed the presence of dark-zone/luminous flame-zone structures. The mole fraction of CO increased while the mole fraction of HCN decreased from the beginning of the dark zone to the luminous flame zone. Data on the spatial variation of species concentration and temperature within these zones are important for the development and validation of chemical kinetic mechanisms describing the combustion of solid propellants.

Original languageEnglish (US)
Pages (from-to)113-129
Number of pages17
JournalCombustion science and technology
Volume122
Issue number1-6
DOIs
StatePublished - Jan 1 1997

Fingerprint

propellants
Propellants
Absorption spectroscopy
temperature profiles
flames
absorption spectroscopy
solid propellants
Solid propellants
Carbon Monoxide
profiles
composite propellants
Composite propellants
RDX
Temperature
Spectral resolution
Infrared absorption
Reaction kinetics
spectral resolution
infrared absorption
Infrared spectroscopy

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

Cite this

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abstract = "The use of Fourier transform infrared absorption spectroscopy to obtain species and temperature profiles within solid-propellant flames is described. Measurements were performed at a spectral resolution of 2 cm-1 and a spatial resolution of 1 mm within the flame zone of an RDX-composite propellant. A nonlinear, least-squares routine was developed to deduce the absolute species concentrations of CO, NO, H2O, CO2, HCN, CH4 and N2O as well as the rotational temperature. The deduced temperature profile revealed the presence of dark-zone/luminous flame-zone structures. The mole fraction of CO increased while the mole fraction of HCN decreased from the beginning of the dark zone to the luminous flame zone. Data on the spatial variation of species concentration and temperature within these zones are important for the development and validation of chemical kinetic mechanisms describing the combustion of solid propellants.",
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Species and temperature profiles of propellant flames obtained from FTIR absorption spectroscopy. / Mallery, C. F.; Thynell, Stefan.

In: Combustion science and technology, Vol. 122, No. 1-6, 01.01.1997, p. 113-129.

Research output: Contribution to journalArticle

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