A Gas Generator Concept for Boron Furled Missiles: Assessment of the Boron Particle Ignition by Means of the Temperature of a Restricted Thermodynamical Equilibrium

摘要

The assumption that a certain particle temperature is the most important prerequisite for boron particle ignition implies the necessity of controlling the attainment of this temperature in the course of the chosen heat up process. The hybrid gas generator concept is chosen for particle heat up process. The hybrid gas generator concept is chosen for particle heat up. The resulting thermal state of the boron particles is characterized by a T*-temperature, which is derived for a restricted thermodynamical equilibrium defined by the suppression of chemical contact between the reacting substances of the gas generator and the thermally coupled boron fuel, which is to be combusted in a secondary airbreathing combustion chamber. A temperature diagram is derived, in which the ignition readiness of the boron particulate fuel is displayed in terms of a T*-temperature depending on a varied fraction of the boron fuel, which is set to be combusted in the primary process in order to heat up the remainder of the boron.