Accession Number : ADA140767

Title :   Laser Probes of Propellant Combustion Chemistry.

Descriptive Note : Final rept. 30 Sep 80-31 Jan 84,

Corporate Author : SRI INTERNATIONAL MENLO PARK CA

Personal Author(s) : Crosley,D R ; Smith,G P ; Golden,D M

PDF Url : ADA140767

Report Date : 29 Mar 1984

Pagination or Media Count : 201

Abstract : 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.

Descriptors :   *LASER INDUCED FLUORESCENCE, *COMBUSTION, *THERMOCHEMISTRY, *PROPELLANTS, LASERS, PYROLYSIS, FREE RADICALS, DIAGNOSIS(GENERAL), COLLISIONS, QUENCHING, REACTION KINETICS, CONSTANTS, PROBES, MODELS, FLAMES, METHANE, NITROGEN OXIDES, OXIDES, MIXTURES, VAPOR PHASES, NITRAMINES, RDX, HMX, FORMALDEHYDE

Subject Categories : Physical Chemistry
      Lasers and Masers
      Ammunition and Explosives
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE