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- W4317651331 abstract "Solid rocket propellants, utilized in many tactical missiles and military ordnance, are chemically and often physically very complex. The manufacturing process for solid propellants consists of three stages, and the overall performance of the propellant depends on each stage of manufacturing. The wetting of oxidizer particles by the polymer binder within the propellant is a crucial part of the mixing process. The wetting process in the actual mixing process is not known since no known data on the fluid mechanics within a propellant mix are published. Here the study focused on how the wetting process occurred under dynamic conditions using an acoustic mixer. The Wilhelmy plate experiment was modified to the LabRAM to study dynamic wettability at propellant mixing conditions and find the dynamic contact angle (DCA). Between water and glass, the dynamic contact angle ranged between 44.8 ͦ- 62.4 ͦ, and greater DCA ranges were measured at higher accelerations. The smallest DCA was measured at the highest acceleration. Additionally, a phase lag between the dynamic contact angle peaks and the associated velocity peaks was seen. This phase lag is due to the involved forces. Higher acceleration conditions led to development of droplet formation on the rod. The Weber number was able to explain this droplet formation. A trend of higher velocities aligning with higher accelerations was also examined to confirm different expectations. These findings lay the foundation for improving the manufacturing process of solid propellants." @default.
- W4317651331 created "2023-01-21" @default.
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- W4317651331 date "2023-01-19" @default.
- W4317651331 modified "2023-09-27" @default.
- W4317651331 title "Dynamic Contact Angle Measurements Using LabRam" @default.
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- W4317651331 doi "https://doi.org/10.2514/6.2023-2558" @default.
- W4317651331 hasPublicationYear "2023" @default.
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