The burning of periodic sandwich propellants

A. Hegab, T. L. Jackson, J. Buckmaster, D. S. Stewart

Research output: Contribution to conferencePaperpeer-review


We develop a mathematical model which describes the unsteady regression rate determined by simultaneously solving the combustion field in the gas-phase and the thermal field in the solid-phase, with appropriate jump conditions across the gas/solid interface. The model takes into account the AP decomposition flame, reaction between the AP products and the binder gases, properties of the AP and binder, variable gas-phase transport properties, and the unsteady non-planar regressing surface. A Hamilton-Jacobi equation is used that governs the propagation of the unsteady regressing surface. Although the formulation is general, we consider here only the periodic sandwich geometry. Numerical studies show that the surface evolves into a quasi-steady propagating front. The regression rate is calculated as a function of pressure, fuel matrix thickness, AP particle size, and gas-phase Peclet and Damöhler numbers. The gas-phase flame structure as well as the surface shape are also shown.

Original languageEnglish (US)
StatePublished - 2000
Externally publishedYes
Event36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2000 - Huntsville, AL, United States
Duration: Jul 16 2000Jul 19 2000


Other36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2000
Country/TerritoryUnited States
CityHuntsville, AL

ASJC Scopus subject areas

  • Space and Planetary Science
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering


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