* Technical Program Manager † Research Programmer ‡ Visiting Scholar § Research Scientist ¶ Associate Professor of Aeronautical and Astronautical Engineering, University of Illinois at Urbana-Champaign # Postdoctoral Research Associate ** Senior Research Scientist Copyright  2002 by Center for Simulation of Advanced Rockets. Published by the American Institute of Aeronautics and Astronautics, ...

Rocket plume temperature distribution plays an important role on the heat transfer analysis of launch carriers. Thus, a non-intrusive IR scanner is used in this paper to analyze the influence of spin motion on plume centerline temperature measurements of spinning solid-propellant rockets. Results show that the average error of temperature measurement is below 3.5% even with a 10% error of estim...

In solid rocket motors, aluminum particles are included in the propellant to improve the global performances but the distributed combustion of these droplets is suspected to be a driving mechanism of hydrodynamic instabilities. So the accurate simulation of reactive polydisperse sprays strongly coupled to unsteady gaseous flows appears as a major issue for solid rocket motor optimization. In th...

In this paper, the effects of geometry a submerged nozzle on damping characteristics are studied numerically. Firstly, numerical method is verified by previous experimental data. Then, mesh sensitivity analysis and monitor position independence carried out. Thirdly, systematically studied, focuses placed cavity size, convergent angle divergent angle. The pulse decay utilized to evaluate coeffic...

Introduction In hybrid rocket motors, one of the two propellants (oxidizer or fuel) is in liquid phase and the other is in solid phase. The combination of a solid fuel and a liquid oxidizer is the most common one, Fig. 1. 1 Even though the idea of hybrid rocket motor was conceived as early as 1937, it was only after 1960s they were built successfully with good combustion efficiency. A discussio...