Particle mass, calculated from known particle diameters and number concentrations of mono-disperse ammonium sulfate particles, rather than absorption, was correlated to the PTI phase shift by Fluckiger et al. [ 142].
For high burn rate propellants with significant mass fractions of ammonium perchlorate particles less than 10 μm, small changes in particle diameter can significantly alter the total oxidizer surface area resulting in propellant burning rate reductions.
We used nebulized, size selected ammonium sulphate particles for this purpose.
The results of analyses from the two churches indicate that ammonium nitrate particles were ubiquitous in the indoor air of the churches [20].
The interpretation of Skytte et al. [20] was that ammonium nitrate particles break down upon entry inside the church releasing ammonia and nitric acid.
The sandwiches with fine ammonium perchlorate particles have been quenched by rapid depressurization and their surface profiles have been carefully mapped for different conditions.
We have investigated the properties and behavior of two commonly used filters: silicon carbide (SiC) and cordierite (DuraTrap® RC) by exposing them to nearly-spherical ammonium sulfate particles.
The burning rate trends of both pure binder sandwiches and those containing a mixture of binder with fine ammonium perchlorate particles are investigated over appreciable ranges of pressure and thickness of the middle lamina in the sandwich.
The purpose of this article is the theoretical interpretation of the experimental data on a continuum Neoprene binder, a glass bead-filled polyurethane binder, and unbound micropulverized ammonium perchlorate particles.
