Optical Diagnostics for Solid Rocket Plumes Characterization: A Review

Model-Based Diagnostics and Prognostics for Solid Rocket Motors

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...

Numerical Simulation of Ionized Rocket Plumes

A critical review of solid rocket propellant transient flame models

A critical review is offered of the commonly implemented flame models for computing transient burning rates and intrinsic combustion stability of solid rocket propellants. After illustrating merits and limitations of each, a new flame model is described, by means of a unified mathematical formalism, incorporatin all of the and closer agreement with experimental information is enforced. #he gene...

Model-based Diagnostics for Rocket Systems

A diagnostic software package is currently being developed at NASA Lewis Research Center that utilizes qualitative model-based reasoning techniques. These techniques can provide diagnostic information about the operational condition of the modeled rocket engine system or subsystem. The diagnostic package combines a qualitative model solver with a constraint suspension algorithm. The constraint ...

Monte Carlo Simulation of Particle Radiation in High Altitude Solid Rocket Plumes (Invited)

Several recently developed numerical schemes are used in an integrated framework to simulate the plume flow from a representative solid propellant rocket at an altitude of 114 km. In nonequilibrium regions the gas is modeled using the direct simulation Monte Carlo method, while a particle simulation method based on a simplified approximation of the Boltmann equation is used in near-equilibrium ...