Solid rocket motor flows depend strongly on alumina granulometry, which spreads up with coalescence. Solving droplet sizes in unsteady flows is a modeling and numerical challenge, specially when high loadings generate retrocoupling. As an alternative to Lagrangian approaches, the Eulerian Multi-Fluid model describes polydispersity with size-sorted droplet fluids called sections. A two size mome...

Two launch vehicle concepts based on technologies available today or in a short term future in Western Europe are presented. The design of both launchers has the goal of exploiting synergies with current European programs to limit development and operational costs. Technologies of particular interest here are the high performance solid rocket motors with carbon-epoxy filament wound monolithic m...

This article is focused on the analysis of aluminum combustion dynamics, induced by acoustic oscillations, in solid rocket motors. dynamics expected to drive self-sustained pressure oscillations which can lead structural damages rocket. In order control this thermoacoustic instability, theoretical developments are presented paper highlight main parameters source. These new based a linear model ...

As a key component of the solid rocket motor, nozzle ablation is very important to performance motor. In order study influence law on motor performance, two-dimensional axisymmetric model ground state and vacuum before after was constructed basis reference profile, change pressure, temperature velocity with were studied. The comprehensive calculated evaluate performance. It found that profile c...

MODIFIED) A progress in development of the physics model based diagnostic and prognostic system for solid rocket motors (SRMs) of the new generation of the crew exploration vehicles is reported. The performance model (PM) of the internal ballistics of large segmented SRMs in the regime of steady burning in the presence of the case breach fault is presented. This model takes into account propell...