Chemistry of Propellants

Combustion Mechanisms of Solid Propellants

Constitutive Modelling of High - Elongation Solid Propellants

A phenomenological approach is used to represent the nonlinear viscoelastic behavior of solid propellants. A three dimensional nite strain viscoelastic model, modi ed by a strain softening function that accounts for damage e ects, is considered in the research. Some of the signi cant aspects of high-elongation propellants are incorporated into the constitutive model. The resulting stress-strain...

Low Acid Producing Solid Propellants

The potential environmental effects of the exhaust products of conventional rocket propellants have been assessed by various groups. Areas of concern have included stratospheric ozone, acid rain, toxicity, air quality and global warming. Some of the studies which have been performed on this subject have concluded that while the impacts of rocket use are extremely small, there are propellant dev...

Continuous Shear Roll Milling of Gun Propellants

The continuous shear roll milling can be used for the processing and granulation of gun propellants. Here a mathematical model of the continuous shear roll milling process will be presented along with experimental data collected on live and simulant propellant formulations. The role of the flow boundary condition will be shown to be critical in the processability analysis. The safety aspects wi...

Physiological response to aerosol propellants.

Acute exposures to isobutane, propane, F-12, and F-11 in concentrations of 250, 500, or 1000 ppm for periods of 1 min to 8 hr did not produce any untoward physiological effects as determined by the methods employed which included serial EKG's and continuous monitoring of modified V5 by telemetry during exposure. Repetitive exposures to these four propellants were also without measurable untowar...