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INHIBITION OF A SOLID ROCKET MOTOR PROPELLANT
Caio Brandão , RJ
Co-Authors: Caio Brandão, Marco Lemos, Bruno Santos, Danielly Batista da Silva, Amadeus Penna Firme Machado, Camille Cruz , Thais Cilene Moreira, Kelvin Guimarães
Presenter: Danielly Batista da Silva
This work presents the casting process of solid propellants, called propellant grains, and how they were thermally protected in an amateur rocket called SELENE, from the Federal Fluminense University's LUFFT rocketry team. Thermal protection is very important for the safety of the solid rocket motor, preventing the occurrence of catastrophic failures. The BATES configuration is chosen for the propellant grains as it fits the team's expectations of the easiness in the casting process and performance. The casting process is made through a nylon cylindrical mold machined in a turning lathe machine and the chosen thermal inhibitor is a layer of Papel Vivaldi around the grain, which has proved to be a safe combination. Finally, according to the presented methods and the chosen thermal protection, the SELENE rocket did not suffer any structural damage in its experimental validations, obtaining a Thrust $\times$ Time curve within the expected and the most accurate apogee at ground level of the Latin American Space Challenge 2019.
Solid Propulsion, Thermal Protection, rocketry, Inhibition, Propulsion