Experimental and Modeling Investigation of Particle Interaction in SRM Exhaust Flows

Physical Sciences Inc. proposes to measure and model the Al-Al_2O_3 particle behavior in the exhaust flow of solid rocket motors (SRM) to ensure the development of a robust and accurate physics based exhaust plume flow field and signature prediction capability. An existing highly instrumented SRM flow field simulation facility will be used to conduct experimental measurements enabling the calibration and extended parameterization of models that simulate motor firing environments. The targeted experimental measurements will acquire mechanistic understanding of the Al-Al_2O_3 particle distribution within the motor"s accelerated flow field and further the development of a comprehensive suite of sub-models that capture the particulate processes. This work will be conducted in conjunction with subcontract efforts by Software and Engineering Associates Inc., who will incorporate the results of these measurements into their industry-standard codes. Raytheon Missile Systems will provide technical advice and support to the effort, which is also expected to provide information that could lead to improvements in SRM performance.