Publicado 6 números por año
ISSN Imprimir: 2150-766X
ISSN En Línea: 2150-7678
Indexed in
STUDY OF FLAME STRUCTURE, KINETICS AND MECHANISM OF THE THERMAL DECOMPOSITION OF SOLID PROPELLANTS BY PROBING MASS SPECTROMETRY
SINOPSIS
The methods for the study of flame structure and kinetics of the thermal decomposition of solid propellant (SP) by probing mass spectrometry (PMS) are described. Several types of setups based on microprobe and molecular beam mass spectrometric probing for the study of SP flame structure at high (10 atm) and low (≤1 atm) pressures have been developed. An installation for studying thermal decomposition of SP at the high heating rate of SP specimen up to 20−100 degree/s under the condition approximately similar to those present in the condensed phase in the vicinity of the burning surface is described. The results of the investigation of the flame structure of SP ingredients (RDX, ADN), sandwich systems are presented. Profiles of the species concentrations in flames have been measured. The main reaction in high temperature zone of RDX and ADN flames has been determined. The results of RDX flame structure modeling are in a good agreement with the experimental ones. The results of probing gas phase zone at ADN deflagration at 1, 3 and 6 atm. are presented. Flame structure studies of sandwich based on AP allowed a confirmation of multizone structure and step-by-step mechanism of reactions in AP flame. A study of thermal decomposition of ammonium dinitramide (ADN) by molecular beam mass spectrometry has been carried out. The products of ADN thermal decomposition and products release rates on heating rate of 20 deg/s has been obtained. Data obtained by PM at the SP combustion and decomposition chemistry are discussed and compared with literature data.
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Kumar Pratim, An overview on properties, thermal decomposition, and combustion behavior of ADN and ADN based solid propellants, Defence Technology, 14, 6, 2018. Crossref