Abstract:

One of the effective methods for increasing the thrust of the rocket motor with end-burning grain is to embed metal fibers along the longitu— dinal direction in the propellant grain. The purpose of this paper is to clarify the burning mechanism of this end—burning grain so as to provide a theoretic basis for designing this type of grain. In this paper, the factors influencing the burning rate along the fibers are detailed and some experimental results are presented. Experimental studies have indicated that the burning rate along the fibers can be greatly increased and different values of the burning rate can be obtained by embedding fibers of different metals. Therefore, the thrust of the rocket motor with end—burning grain can be controlled and modulated by means of using different metal fibers.