Ammonium perchlorate

About: Ammonium perchlorate is a research topic. Over the lifetime, 2359 publications have been published within this topic receiving 33412 citations. The topic is also known as: AP.

Effect of Zn Powders on the Thermal Decomposition of Ammonium Perchlorate

Abstract: In this paper, the catalytic effect of Zn nanopowders on thermal decomposition of ammonium perchlorate (AP) as well as those of Zn micropowders has been investigated using differential thermal analysis (DTA). The results show that both nanometer and micrometer Zn powders show similar excellent catalytic effect on the decomposition of AP, while the total heat releases of AP added by Zn nanopowders are generally higher than those of AP added by Zn micropowders. In addition, an attempt has been made to explain the observed results with the help of theoretical considerations and data generated during this work.

Deflagration characteristics of ammonium perchlorate at high pressures

Abstract: Influence of very high pressure /1000 - 23000-psi/ on deflagration rate of pure ammonium perchlorate

Ammonium perchlorate-containing gas generants

Abstract: Ammonium perchlorate-containing gas generant compositions which, upon combustion, produce or result in an improved effluent and related methods for generating an inflation gas for use in an inflatable restraint system are provided. Such ammonium perchlorate-containing gas generant compositions include ammonium perchlorate present with a mean particle size in excess of 100 microns. Such ammonium perchlorate-containing gas generant compositions also include or contain a chlorine scavenger present in an amount effective to result in a gaseous effluent that is substantially free of hydrogen chloride when the gas generant is combusted, wherein at least about 98 weight percent of the chlorine scavenger is a copper-containing compound. Suitable copper-containing chlorine scavenger compounds include basic copper nitrate, cupric oxide, copper diammine dinitrate-ammonium nitrate mixture wherein ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate and combinations thereof.

Laser-Assisted Combustion of Solid Propellants at Low Pressures

Abstract: This paper describes experimental work on laser-assisted combustion and its use to control solid propellants. Burning rates of hydroxyl-terminated polybutadiene and ammonium perchlorate composite solid propellants were measured at pressures up to 90 kPa under laser irradiation, and propellant-preheat temperature distribution was measured by thermography. Combustion control, including ignition and interruption by laser irradiation, was feasible with custom-made (fuel-rich) non-self-combustible solid propellants with a burning rate coincident with Vieille's law and a pressure exponent of approximately 0.5. Consequently, this combustion-control concept seems to be applicable to a microsatellite thruster. The heat balance on the burning surface evaluated at a laser power density of 1.4 W ·mm -2 at 50 kPa produced the following results: chemical reaction was endothermic at a heat flux of -0.7W mm -2 , heat was supplied to the solid phase of the propellant at a heat flux of 3.7 W ·mm -2 , and heat-feedback rate to the burning surface was 3.0 W ·mm -2 , which suggests that approximately 70% of the energy transferred to the burning surface was provided by combustion itself, and the laser supplied supplementary heat flux to compensate for the heat insufficiency to sustain combustion.