Laser probes of propellant combustion chemistry. Final report 30 Sep 80-31 Jan 84
Laser-induced fluorescence (LIF) can be used to measure the atomic, diatomic, and triatomic free radicals that are the intermediates in combustion chemistry. Coupled with detailed models, which incorporate a sound and consistent set of reaction rate constants, such measurements can lead to an understanding of that chemistry, having predictive value for use under experimentally difficult conditions. This report describes the development of LIF techniques, the applications of such techniques of flames and to laser pyrolysis/laser fluorescence kinetics experiments, studies of rate constant estimations and detailed modeling of combustion chemistry. The chemistry studied is that of combusting mixtures of CH4/N2O, CH2O/N2O, CH2O/NO2, and related compounds. These contain the chemical networks, individual reactions, and radical species present in the gas-phase combustion of nitramine propellants, such as HMX and RDX. The tasks described are LIF diagnostic studies on O, N, OH, NCO, and NH2 in flow systems and flames, rate constant estimation studies for unimolecular decomposition of CH2O and several hydrocarbons, modelling of the CH2O/N2O flame, and laser pyrolysis/laser fluorescence studies of CH4/N2O and CH2O/N2O chemistry.
- Research Organization:
- SRI International, Menlo Park, CA (USA)
- OSTI ID:
- 6547196
- Report Number(s):
- AD-A-140767/5; SRI-MP-84-053
- Country of Publication:
- United States
- Language:
- English
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10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
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ALDEHYDES
ALKANES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COLLISIONS
COMBUSTION
DECOMPOSITION
DISPERSIONS
FLAMES
FLUORESCENCE
FORMALDEHYDE
HYDROCARBONS
KINETICS
LASERS
LUMINESCENCE
METHANE
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PROBES
PROPELLANTS
PYROLYSIS
QUENCHING
RADICALS
REACTION KINETICS
THERMOCHEMICAL PROCESSES