Journal ArticleDOI
Some statistical considerations in the burning of composite solid propellants
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TLDR
In this paper, the authors considered the propagation of a deflagration wave through a nearly ordered composite propellant, and found that the least-time path of burning to a given point depends primarily on the packing statistics in a line parallel to the burn rate vector; there is little effect of particles only a few particle diameters to the side of this line.Abstract:
Propagation of a deflagration wave through a nearly ordered composite propellant is considered. The intent is to see some effects of the particle packing statistics on the propagation rate. A highly oversimplified model of the deflagration physics is considered, and only the statistics are emphasized. It is found that, for propellants of usual packing density, the least-time path of burning to a given point depends primarily on the packing statistics in a line parallel to the burn rate vector; there is little effect of particles only a few particle diameters to the side of this line. In a simplified model that may be solved analytically, there are clearly seen particle-size, pressure, and packing density effects on burn rate which are due to the statistics alone and not the deflagration physics.read more
Citations
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Journal ArticleDOI
Combustion of ammonium perchlorate-polymer sandwiches
TL;DR: In this paper, a series of experimental studies of combustion of sandwiches is reported, and the results are used to develop a relatively detailed qualitative model for the combustion zone microstructure.
Journal ArticleDOI
A model for solid propellant combustion
TL;DR: In this paper, a model is developed to describe the combustion characteristics of composite solid propellants, and a generalized flame standoff distance has been developed based on a modified Burke-Schumann diffusion flame analysis.
Journal ArticleDOI
Review of Composite Propellant Burn Rate Modeling
TL;DR: In this article, stable state combustion modeling of composite solid propellants is discussed with emphasis on the BDP model and some revisions are considered with respect to the analysis of monomodal ammonium perchlorate/inert binder propellants: topics examined include continuity relations, surface area relations, characteristic surface dimension, flame heights and energy balance.
Journal ArticleDOI
Modeling Calculations for HMX Composite Propellants
M. W. Beckstead,K. P. McCarty +1 more
TL;DR: In this article, a time-averaging approach has been developed assuming that the propellant burns through alternate layers of binder and oxidizer at significantly different rates, and the model has been compared in detail with experimental results from 17 HMX/HTPB propellants.
Journal ArticleDOI
Percolation model of polydisperse composite solid propellant combustion
TL;DR: In this paper, the authors predict the least-time path of the burn front through the propellant using percolation theory, which is based on the arc length per streamwise interval.
References
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Journal ArticleDOI
A model of composite solid-propellant combustion based on multiple flames
TL;DR: In this paper, a model describing the combustion of ammonium perchlorate (AP) composite propellants has been developed based on a flame structure surrounding individual oxidizer crystals; the relationship between crystals and the binder matrix was evaluated statistically.
Journal ArticleDOI
Review of Composite Propellant Burn Rate Modeling
TL;DR: In this article, stable state combustion modeling of composite solid propellants is discussed with emphasis on the BDP model and some revisions are considered with respect to the analysis of monomodal ammonium perchlorate/inert binder propellants: topics examined include continuity relations, surface area relations, characteristic surface dimension, flame heights and energy balance.
Journal ArticleDOI
On Statistical Analysis of Composite Solid Propellant Combustion
TL;DR: Thwaites, B., and Williams, P. G., this article estimated the Laminar Boundary Layer with Suction, with particular reference to the suction requirements for boundary layer Stability on Aerofoils of Different Thickness/Chord Ratios.
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