The Dynamics of Solid Propellant Combustion.
Abstract
A nonlinear stability analysis of solid propellant burning was carried out, within the framework of a thermal theory and for quasi-steady gas phase. This required an integral method in reducing the partial differential equation for the condensed phase heat conduction to an approximate ordinary differential equation. A nonlinear algebraic function, called restoring function, was found that contains all basic properties of equilibrium and stability of burning solid propellants. This function depends on the nature of the solid propellant (including its flame) and the operating conditions. Analysis of the restoring function revealed the existence of lower and upper static as well as dynamic burning instability. Nonlinear static and dynamic stability boundaries were determined and stability properties of several unsteady flame models were compared. Most of the predictions were verified by computer simulated tests. The experimental part of this research program is in progress; preliminary results obtained by laser doppler velocimetry and shock tube are discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1978
- Accession Number
- ADA065064
Entities
People
- Adolfo Reggiori
- Aldo Coghe
- Luigi De Luca
Organizations
- Polytechnic University of Milan