Physics-based modeling of solid rocket motor propellant

ABSTRACT: The objective of the work proposed herein is to develop innovative physics-based models facilitating the accurate prediction of solid rocket propellant behavior with varying environmental boundary conditions. Our objective is to design and develop a theoretical framework for the integration of existing, state-of-the-art physics-based models, and the development of new physics-based models, for solid rocket motor propellant and the associated propellant-liner insulation (PLI) system. We will demonstrate the potential benefits of this system for solid rocket motors. We will also determine the required computational resources and will demonstrate how the models will interface with extant modeling tools This framework comprises state-of-the-art capabilities to model all phenomena known to be important to the entire SRM lifecycle. Components of this model will include state-of-the-art, first-principles representations of: polymer morphology, polymer mechanics, polymer fracture, particulate mechanics, cumulative damage, particle dewetting, and particle pack microgeometry. The integration of these models into a comprehensive, robust, accessible, computationally tractable"desktop tool"represents one of the principle products of this program. BENEFIT: Veracity FA believes that SBIR topic AF141-091 presents a compelling and unique opportunity for the commercialization of the SRM Modeling Toolset. The major SRM manufacturers in the United States require increased fidelity in their modeling capabilities to support new SRM designs but also to support aging studies of their existing SRM fleets. The SRM Modeling Toolset will provide the"at-the-desk"tools engineers and scientists will need to successfully accomplish their mission over the next two decades.