RESEARCH ON SOLID PROPELLANT COMBUSTION INSTABILITY.
Abstract
This report describes a theoretical study of the response of solid propellant combustion processes to an oscillating pressure environment. Of particular interest was the question of the temparature history of the interface between the flame zone and the product gas field. Earlier studies predicted that entropy waves should appear in the product gas field if interface conditions were isothermal. A simplified model was set up for the combustion process, in which the reaction times in the gas phase were so short as to be negligible when compared to times for solid phase processes. Analytical solutions were found for the response of the propellant to a cyclic pressure perturbation. Results of calculations based on these solutions are presented for a range of physical parameters. The results have two salient features: (1) for some ranges of parameters, the real part of the acoustic admittance is positive, implying instability at quite low frequencies, and (2) the temperature variations at the end of the flame zone are sizable at relatively low frequencies. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 18, 1964
- Accession Number
- AD0451201
Entities
People
- Joseph Wenograd
- R. H. Woodward Waesch
- Reuel Shinnar
Organizations
- Princeton University