Solid rocket drive system based on switched reluctance motor is established through the working principle of motor, and closed-loop precise control solid digitization realized by method pulse width modulation technology. The gravity value measured vertical deviation measurement attitude error observation. datum obtained relationship between system. state space obtained. horizontal component est...

A numerical code that simulates combustion phenomena occurring in a solid rocket motor is developed in this study using a preconditioning algorithm. A quasi-steady-combustion process was analyzed for a composite material in a submerged nozzle. The governing equations were solved using a dual-time stepping method combined with a finite volumemethod. Themass flux and pressure in the cell face wer...

We have studied the ignition of fuel sprays and simulated solid rocket fuels (SRF) by the photoignition of single wall carbon nanotubes (SWCNTs) with an ordinary camera flash. Our investigation includes the effect of solid additives such as aluminum nano-particles and solid oxidizers such as ammonium perchlorate (AP) on the photoignition characteristics. We have shown that by mixing CNT with ot...

This paper describes work on early detection of space launch vehicle failures that could lead to loss of control during ascent. The particular focus is on the Solid Rocket Motor (SRM) comprising First Stage of the Crew Launch Vehicle (CLV). Some of the most important failure modes leading to loss of vehicle control are caused by hot gases ejected from the SRM combustion chamber through a case b...

A Monte Carlo ray trace radiation model is presented for the determination of radiative properties of Al2O3 particles in the high altitude plume of a solid propellant rocket. A polydisperse distribution of non-gray particles is modeled as an emitting, absorbing and scattering medium of arbitrary optical thickness. Strong two-way coupling is allowed between radiation and flowfield calculations, ...

* Technical Program Manager † Visiting Scholar ‡ Research Scientist § Associate Professor of Civil and Environmental Engineering, University of Illinois at Urbana Copyright  2001 by Center for Simulation of Advanced Rockets. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Abstract We describe our numerical method for threedimensional simulations of s...