Topic
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.
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11 citations
TL;DR: In this article, a wave-model for the laminar, adiabatic combustion of a homogeneous, pre-mixed, gaseous flame is expanded and applied to the heterogeneous combustion of pure solid propellant.
Abstract: The classical wave-model for the laminar, adiabatic combustion of a homogeneous, pre-mixed, gaseous flame is expanded and applied to the heterogeneous combustion of a pure solid propellant. The conservation equations for the gas, solid and Gibbsian surface states are solved to obtain an explicit expression for the steady-slate burning rate. The major problem of predicting the magnitude of the gas-phase heating rate, is resolved by relating the heating rate to the burning velocity of a simulated flame above the solid surface. The theory is readily modified to include energy loss corrections for the non-adiabatic processes of conduction, convection and radiation to the surroundings. The theory predicts a magnitude for the burning rate of pure ammonium perchlorate that is in good agreement with experiment New data are presented for the non-adiabatic, laser-induced combustion of ammonium perchlorate. The theory is in good agreement with these measurements and those of previous investigators The diffi...
11 citations
TL;DR: In this article, the fine sphere ammonium perchlorate (AP) was used to spray-drain a high vapor pressure organic solvent saturated with AP solution, and the solution was spraydried.
Abstract: Fine sphere ammonium perchlorate (AP) is necessary in order to manufacture a propellant with a higher burning rate. In order to prepare smaller droplets by splitting a sprayed droplet vigorously in the drying process of the spray-drying method, a high vapor pressure organic solvent saturated with AP was dissolved in the AP solution, and the solution was spray-dried. Acetone, methanol and ethanol were used in this work. Fine sphere AP is prepared when the range of methanol concentration is 70-100vol% and the range of ethanol concentration is 15-85vol%. However when acetone is used, fine sphere AP is not prepared. The mean diameter of fine sphere AP decreases with increase in the concentration of organic solvent and the inlet temperature of drying air, but the mean diameter converges in the range of 1.3-2.2×10-6m. When methanol concentration is 100vol% and the inlet temperature is above 313K, the finest sphere AP is prepared in this work.
11 citations
11 citations