A simulation scheme is proposed for flowfield and radiation analysis of solid rocket exhaust plumes at high altitude. Several recently developed numerical procedures are used to determine properties of the gas and condensed phase Al2O3 particles, and spectrally resolved plume radiation calculations are performed using a Monte Carlo ray trace model. Simulations are run for a representative plume...

steep temperature gradient is established in the solid This gradient extends to a depth of several microns, depending upon the external heat-flux rate As the propellant surface layers approach 150°C, the intermosaic blocks of the oxidizer particles decompose, and gaseous products diffuse to the oxidizer particle-fuel interface From ammonium perchlorate decomposition studies, the over-all reacti...

A phenomenological approach is used to represent the nonlinear viscoelastic behavior of solid propellants. A three dimensional nite strain viscoelastic model, modi ed by a strain softening function that accounts for damage e ects, is considered in the research. Some of the signi cant aspects of high-elongation propellants are incorporated into the constitutive model. The resulting stress-strain...

We are developing a micro solid propellant rocket array thruster for simple attitude control of a 10 kg class micro spacecraft. To improve the contact between the ignition heater and the ignition charge of lead thiocyanate / potassium chlorate (RK), the loading method of RK was improved. Ignition probability increased to 100 % in air and 83 % in vacuum. When the pellet diameter of boron / potas...

Simulating solid propellant rocket motors requires solving an extremely complex, fully coupled multidisciplinary physics problem that spans a wide range of length and time scales. We have taken a staged approach in developing an integrated whole-system rocket simulation package, beginning with relatively simple physical models, geometries, and coupling in our first-generation code (GEN1), and p...

CoNiZnFe 2 O 4 contains four transition metals known to act as a carrier during the thermal decomposition of solid propellant oxidizers. The studies disclosed that addition catalyst makes process AP faster.