Research on the effects of deterred-coating propellants on propellant charge

摘要

In order to study the effects of deterred-coating propellants on propelling charge, closed chamber test and interrupted chamber test are used to analyze the burning of mixed charge. The characteristic that the relative combustion quality ψ_e at the inflection point of dp/dt-ψ curve of deterred-coating propellant charge varies with the charge density is found in closed chamber tests. Reasons of the change of ψ_e are analyzed by the result of intercepted chamber test. From the potential equilibrium theory and the analysis of experimental data, it is indicated that the change of ψ_e is corresponding to the change of ψ_E at the potential equilibrium point of p-t curve in interior ballistic experiments of mixed charge, which will influence the interior ballistic performance.