R. F. B. Gonçalves and E. N. Iwama and J. A. F. F. Rocco and K. Iha
Aging Evaluation of Ammonium PerchlorateHydroxyl Terminated PolybutadieneBased Solid Rocket Engine by Reactive Molecular Dynamics Simulation and Thermal Analysis
175 - 179
2019
13
4
International Journal of Materials and Metallurgical Engineering
https://publications.waset.org/pdf/10010264
https://publications.waset.org/vol/148
World Academy of Science, Engineering and Technology
Propellants based on Hydroxyl Terminated PolybutadieneAmmonium Perchlorate (HTPBAP) are the most commonly used in most of the rocket engines used by the Brazilian Armed Forces. This work aimed at the possibility of extending its useful life (currently in 10 years) by performing kineticchemical analyzes of its energetic material via Differential Scanning Calorimetry (DSC) and also performing computer simulation of aging process using the software Largescale AtomicMolecular Massively Parallel Simulator (LAMMPS). Thermal analysis via DSC was performed in triplicates and in three heating ratios (5 ºC, 10 ºC, and 15 ºC) of rocket motor with 11 years shelflife, using the Arrhenius equation to obtain its activation energy, using Ozawa and Kissinger kinetic methods, allowing comparison with manufacturing period data (standard motor). In addition, the kinetic parameters of internal pressure of the combustion chamber in 08 rocket engines with 11 years of shelflife were also acquired, for comparison purposes with the engine startup data.
Open Science Index 148, 2019