Aluminized Composite Solid Propellant
Particle Path In The Combustion Chamber Of
A Solid Rocket Motor
Author(s)
Y. M. Xiao & R. S. Amano
Abstract
In a solid rocket motor (SRM) using aluminized composite solid propellant and a
submerged nozzle, a two-phase flow needs to be investigated by both experiment
and computation. The boundary conditions for the ejecting particles constrain
their trajectories, hence these affect the two-phase flow calculations, and thus
significantly affect the evaluation of the slag accumulation. A new method to
determine the velocities of particles on the solid propellant surface was
developed in the present study, which is based on the RTR (X-ray Real-time
Radiography) technique and coupled with the two-phase flow numerical
simulation. A method was developed to simulate the particle ejection from the
propellant surface. The moving trajectories of metal particles in a firing
combustion chamber were measured by using the RTR high-speed motion
analyzer. Image processing software was also developed for the RTR images, so
the trajectories of particles could be obtained. Numerical simulations with
different propellant-surface boundary conditions were performed to calculate
particle trajectories. By comparing the two trajectories, an appropriate boundary
condition on the propellant surface was referred. The present method can be
extended to study the impingement of particles on a wall and other related twophase
flows.
Keywords: solid rocket motor, propulsion, experiments, CFD, X-ray.
1 Introduction
Many solid rocket motors (SRMS) use aluminized propellants and submerged
nozzles to improve performance. When these propellants burn, the aluminum
Keywords
solid rocket motor, propulsion, experiments, CFD, X-ray.
Related Book
Other papers in this volume
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