Chemical Speciation and Dynamics in the Surface Combustion Zone of Energetic Materials

Brill, T. B.; Beckstead, M. W.; Flanagan, Joseph Edward; Lin, Ming‐Chang; Litzinger, Thomas A.; Waesche, R. H. Woodward; Wight, Charles A.

doi:10.2514/2.6006

Cited by 22 publications

(26 citation statements)

References 8 publications

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“…For example, perovskite-type LaFeO 3 and related compounds are capable of catalyzing the reaction between CO and NO x in the auto emission [6,7]. Note that CO and NO x are also two major products of HMX thermal decomposition [8]. It has been put forward that, if the reaction can be catalyzed between CO and NO x on the burning surface of NEPE propellant, the pressure index will be reduced [2].…”

Section: Introductionmentioning

confidence: 99%

Preparation and catalytic activities of LaFeO3 and Fe2O3 for HMX thermal decomposition

Wei

Liu

et al. 2009

Journal of Hazardous Materials

117

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Section: Introductionmentioning

confidence: 99%

Preparation and catalytic activities of LaFeO3 and Fe2O3 for HMX thermal decomposition

Wei

Liu

et al. 2009

Journal of Hazardous Materials

117

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“…The thickness of the foam layer and the gas-phase reaction zone vary with pressure. At 1 atm, the foam layer is $70 and $130 mm for HMX and RDX, respectively, and the gas phase reaches equilibrium within $4 and $1 mm from the burning surface [12,13]. At higher pressures (70-100 atm), the foam layer is less than 20 mm thick, and the equilibrium temperature is reached within $100-200 mm from the surface for nitramine monopropellants.…”

Section: Combustion-wave Structuresmentioning

confidence: 99%

Modeling of combustion and ignition of solid-propellant ingredients

Beckstead

Puduppakkam

Thakre

et al. 2007

Progress in Energy and Combustion Science

213

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“…Liquid or solid state combustion and detonation processes have been the subject of considerable experimental (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) and theoretical (17)(18)(19)(20)(21)(22)(23)(24)(25) efforts. Yet, experimental methods for obtaining a detailed characterization of reaction intermediates and products in the condensed phase are limited and much less precise than in for instance the gas phase.…”

Section: Introductionmentioning

confidence: 99%

The Mechanism and Dynamics of Explosive Combustion in Aerosol Fuels

Baer¹,

Miller²

2006

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to the Department of Defense, Executive Services and Communications Directorate (0704-0188). Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION Department of Chemistry REPORT NUMBERUniversity of North Carolina Chapel Hill, NC 27599-3290 SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)AFOSR ABSTRACTThe research involves the production of high energy material particles with diameters between 1 and 5 om and the study of its subsequent combustion by rapid laser heating or photolysis. Alternatively, the high-energy ionic liquids with no vapor pressure are placed on a plate inside the vacuum and irradiated with high intensity IR radiation. In either case, the reaction products are followed by single photon vacuum UV laser ionization in a time of flight (TOF) mass spectrometer. The purpose is the elucidation of reaction mechanisms in high density or condensed phases and the development of more efficient methods of combustion. The experimental set-up includes aerosol generation tools that inject the particles at atmospheric pressure into an aerodynamic lens, which focuses the particles onto the center of a 3 mm expansion nozzle, whereupon the particles are accelerated to velocities of 200 to 300 m/s depending upon their size. The research involves the production of high energy material particles with diameters between 1 and 5 ýtm and the study of its subsequent combustion by rapid laser heating or photolysis. Alternatively, the high-energy ionic liquids with no vapor pressure are placed on a plate inside the vacuum and irradiated with high intensity IR radiation. In either case, the reaction products are followed by single photon vacuum UV laser ionization in a time of flight (TOF) mass spectrometer. The purpose is the elucidation of reaction mechanisms in high density or condensed phases and the development of more efficient methods of combustion. The experimental set-up includes aerosol generation tools that inject the particles at atmospheric pressure into an aerodynamic lens, which focuses the particles onto the center of a 3 mm expansion nozzle, whereupon the particles are accelerated to velocities of 200 to 300 m/s depending upon their size. The particles are sized by laser light scattering, ignited by a high power CO 2 laser pulse, and the products ionized by the 10.48 eV light produced by third harmonic gener...

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Chemical Speciation and Dynamics in the Surface Combustion Zone of Energetic Materials

Cited by 22 publications

References 8 publications

Preparation and catalytic activities of LaFeO3 and Fe2O3 for HMX thermal decomposition

Preparation and catalytic activities of LaFeO3 and Fe2O3 for HMX thermal decomposition

Modeling of combustion and ignition of solid-propellant ingredients

The Mechanism and Dynamics of Explosive Combustion in Aerosol Fuels

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