Selecting Double-Base Propellants for a 120 mm Mortar Rocket Assisted Projectile through DoE
DOI:
https://doi.org/10.3849/aimt.01969Keywords:
rocket assisted projectile, design of experiments, characteristic velocity, low vulnerability ammunition, green propellantsAbstract
Range extension of a 120 mm mortar projectile can be attained by a rocket motor within the grenade body. This study deals with the design of experiments-based methodology to identify double-base propellant compositions conceptually feasible for such a motor, from a thermochemical viewpoint. Formulations were defined under low vulnerability and green principles, using Minitab® Statistical Software, following mixture design techniques to account for intrinsic constraints. The thermochemical behavior of these formulations was simulated with a specialized software, taking theoretical characteristic velocity c* as a performance indicator. An empirical model was then fitted, permitting the identification of a set of favorable compositions leading to c* enhancement, regarding a reference double-base propellant, thus unveiling the design possibility of rocket motor downsizing.
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