Research on Non-Steady Combustion and Extinguishment.

摘要

Experimental and theoretical studies were carried out on acoustic instability during combustion of solid propellants. The objective of the experimental tests was to find a set of three parameters, Eg, Es, Ts for a new theoretical model which would consistently correlate experimental data. Tests of burning rate, flame temperature, L*-instability, and T-burner instability were run for five different propellants and the three parameters were determined. A correlation of the theoretical model with the experimental data was made and the results were reasonably good and better than previous correlations. A previously developed non-linear computer model of the T-burner was extended to allow high amplitude pressure oscillations and damping from heat transfer and fluid friction. Significant pressure wave steepening was found with high amplitude oscillations. Momentum loss out the vent was found to be the dominant damping effect.