Thermophysical Properties of Six Solid Gun Propellants

摘要

Measurements are reported of the thermal conductivities and thermalconductivities or six U.S. Army solid gun propellants over the temperature range -20 deg C to +50 deg C at atmospheric pressure. These propellants include representative types from each class of materials that are either in the fielded inventory or experimental ('X' prefix), i.e., a single base (M10), a double base (M9), a homogeneous triple base (JA2), a composite triple base (M30), a composite nitramine with inert plasticizer (XM39), and a composite nitramine with energetic plasticizer (M43). Conductivities and diffusivities were measured simultaneously using a new experimental technique developed specifically for the purpose. The experiment is designed to approximate the mathematical idealization of a one-dimensional, infinite, two-component, composite solid whose planar interface is subjected to a step-function heat flux. The average values obtained are estimated