Modeling of Hot Fragment Conductive Ignition of Solid Propellants with Application to Melting and Evaporation of Solids
Abstract
A comprehensive theoretical model has been formulated for studying the degree of vulnerability of various solid propellants being heated by hot spall fragments. The model stimulates the hot fragment conductive ignition (HFCI) processes caused by direct contact of hot inert particles with solid propellant samples. The model describes the heat transfer and displacement of the hot particle, the generation of the melt (or foam) layer caused by the liquefaction, pyrolysis, and decompression of the propellant, and the regression of the propellant as well as the time variation of its temperature distributions. To partially validate the theoretical model in the absence of the necessary chemical kinetic data, an ice-melting and evaporation experiment was designed and conducted. These experiments provide features of the conductive heating, melting, and evaporating process. Calculated results compare well with experimental data in temperature-time traces, spall particles-sinking velocity, and displacement.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1988
- Accession Number
- ADA207727
Entities
People
- K. C. Hsieh
- K. K. Kuo
- W. H. Hsieh
Organizations
- Ballistic Research Laboratory