Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"propellant combustion"”.
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Composite propellant combustion with low aluminum agglomeration
… polybutadiene (AP/HTPB) propellant formulation that results in low Al agglomeration, even at low pressures (1-30 atm). Variations in formulation—such as fine-AP/binder ratio, Al particle size, Al loading, coarse-AP size—are also examined. A fuel-rich, oxygenated binder …
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Towards Electrical Control Over Rocket Propellant Combustion
Electrical control over propellant combustion has the opportunity to improve the functionality and performance of various propulsion systems. In solid rocket motors, active burn rate modulation has the potential to enable throttling. In spacecraft propulsion systems, electrolysis of propellants may …
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Implementation of ImageActionplus software for improved image analysis of solid propellant combustion holograms.
This thesis supports computer-aided data analysis of holograms produced from rocket motor firings. The work reported in this thesis modified existing software code to make it compatible with installed upgrades in the microcomputer imaging system. In particular, this involved converting the format …
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The development of an optically active laser Schlieren system with application to high pressure solid propellant combustion
… was developed and applied to high pressure solid propellant combustion studies. Advantages and limitations of the system are discussed. Ammonium perchlorate deflagration was observed to pressures of 2500 psi. Distinct surface reaction sites were evidenced in the gas phase at high and low pressures …
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Measurement and Modeling of Pressure -Driven Transient Burning of Solid Propellants
… of this study, two transient heterogeneous propellant combustion models, applicable to fine oxidizer composite propellants, are examined. The ""surface accumulation model"" supposes that components accumulate in a layer at the surface. Each component reaches an equilibrium concentration …
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Simplified Combustion Modeling of Composite Propellants
… steady state model of a burning composite propellant is developed to study the characteristics of the combustion process. The solid composite is a periodic sandwich unit comprised of two oxidizer laminates separated by a fuel binder layer. Included in the model are essential features for …
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Adsorption of hydrogen chloride on microcrystalline silica
… Space Shuttle employs a solid rocket propellant. Combustion of the solid propellant produces hydrogen chloride as one of the major products. In this thesis, the hydrogen chloride/silica system was investigated. Silica was chosen as a model compound to represent ground debris …
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Design And Implementation Of An Emission Spectroscopy Diagnostic In A High-pressure Strand Burner For The Study Of Solid Propell
… application of emission spectroscopy to monitor combustion products of solid rocket propellant combustion can potentially yield valuable data about reactions occurring within the volatile environment of a strand burner. This information can be applied in the solid rocket propellant industry. The …
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Transient Computational Fluid Dynamic Modeling of Baffled Tube Ram Accelerator
… were investigated by first establishing the combustion on the projectile in a smooth bore tube before it entered the baffled-tube section. A key finding from premixed methane and oxygen propellant simulations was that aftward-slanted baffles generated higher thrust than when the baffles were …
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Effect of propellant morphology on the acoustics of the BATES motor
… temporal correlations. Three different propellant morphologies are modeled and tested along with a random white noise model that represents the current surrogate for propellant modeling. The data gained from each of these simulations is compared using contour plots of the chamber flow …
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Two-Dimensional Modeling of AP/HTPB Utilizing a Vorticity Formulation and One-Dimensional Modeling of AP and ADN
… performed by the author pertaining to the propellant oxidizer, ammonium perchlorate (AP). Detailed kinetic mechanisms have been utilized to model the combustion of the monopropellants AP and ADN, and a two-dimensional diffusion flame model has been developed to examine the flame structure …