Browsing Auburn University Graduate School by Department "Aerospace Engineering"
Now showing items 81-100 of 190
Dynamics and Control of Satellite Relative Motion in Elliptic Orbits using Lyapunov-Floquet Theory
(2013-04-23)
Rendezvous and proximity operations involving satellites operating near each other have been performed since the Gemini missions. A better understanding of the dynamics of satellites in close proximity could be helpful ...
Dynamics of Secondary Steady State Flows in a Combined Taylor-Couette and Escudier Vortex Breakdown Flow Field
(2022-05-10)
Effects of a varying height end-wall on the bifurcation and stability of secondary steady
state flows within the annular gap of a Taylor-Couette cell were investigated. Experiments
were conducted at four different end-wall ...
Effect of Coordinate Switching on Simulation Accuracy of Translunar Trajectories
(2008-08-15)
This thesis focuses on the effect of round-off error in the accurate simulation of translunar trajectories. The three-body dynamics can be posed in either an Earth-centered (EC) or Moon-centered (MC) frame. In this study, ...
Effect of In Phase and Out of Phase Forcing on Circular Cylinder Wake
(2013-01-03)
Using periodic forcing, the control of instabilities in the wake of a circular cylinder was investigated. The cylinder model had two straight slits, one on each side, that were connected to separate low frequency and high ...
Effect of Random Noise and Gaussian Noise Forcing on the Wake of a Circular Cylinder
(2015-05-11)
Flow over a bluff body has been a topic of extensive investigation, due to a variety of engineering problems such as vortex induced vibrations, unsteady forces and noise associated with the periodic flow in the wake. The ...
Effect of three dimensional forcing on the wake of a circular cylinder
(2009-08-03)
The periodic wake of a circular cylinder was investigated with a three dimensional
disturbances,introduced in the flow field through two sinusoidal slits located on two diametrically
opposite direction on the cylinder ...
Effects of Rotational Motion on the Ballistic Coefficient of Space Debris
(2012-05-09)
Accurate predication of the future states of operational spacecraft and space debris are necessary for conjunctional analysis. Prediction of the states of debris for a few orbital periods is possible with improved models ...
Embedded Imaging of Internal Shock Boundary Layer Interactions
(2025-08-06)
Ramjets and scramjets continue to be a central developmental focus spurred by both offensive and defensive needs on the battlefield. The development of field-able versions of these supersonic and hypersonic air-breathing ...
End-Wall Flow of a Surface-Mounted Obstacle on a Convex Hump
(2009-11-18)
A convex hump has been used to overcome the undesirable effects of the juncture vortex. The effects of a convex hump on the approach boundary layer and consequentially the end-wall flow were quantified. A convex geometry ...
Enforcement of Practical Path Constraints With the Indirect Method For Aerospace Applications
(2026-04-24)
Many aerospace-related optimal control problems (OCPs) are subject to various path equality and inequality constraints on states, control, or a combination of both. Enforcement of these constraints has been studied for ...
Engineering and Statistical Analysis of Solid and Liquid Missile Systems
(2022-12-05)
Engineering and statistical analysis is applied to gain insights and information regarding liquid and solid missile systems. This dissertation outlines five main key topic areas, physics modeling, data generation, model ...
Enhanced Indirect and Convex Optimization Methods for Generating Minimum-Fuel Low-Thrust Trajectories
(2024-12-05)
The high costs of space missions necessitate optimization across all mission aspects, particularly fuel consumption, which impacts both economic feasibility and payload capacity. Electric propulsion systems, with higher ...
Enhancing Image Resolvability in Obscured Environments Using 3D Deconvolution and a Plenoptic Camera
(2015-05-08)
Light field imaging with a plenoptic camera is an emerging flow diagnostic technique capable of capturing three dimensional information about a given volume or flow from a single plenoptic image. Translucent occlusions ...
An Evolutionary Strategies Method to Optimize Turbine and Compressor Blades
(2018-04-23)
The main goal of this study is to improve a two-dimensional optimization scheme for turbine and compressor blades, specifically by improving the overall efficiency of each blade row with respect to objective and penalty ...
Examination of FlightStream for Proximity Flight with Stores
(2017-07-27)
The goal of the following work was to validate and demonstrate the capability of the FlightStream solver to model proximity flight. To this end, wind tunnel proximity data for a MK-82SE bomb released from an F-16 was used ...
An Examination of MHz Rate PIV in a Heated Supersonic Jet
(2014-07-29)
An experimental investigation of a high temperature, supersonic jet conducted at the University of Mississippi's National Center for Physical Acoustics is described. Time-resolved particle image velocimetry (PIV) was used ...
Experimental and Computational Investigation of a Turbofan Inlet Duct
(2009-11-20)
The flow field of an axisymmetric turbofan inlet was investigated experimentally and computationally. Flow visualization results were obtained using LIF, hydrogen bubbles, and PIV. Incidence angle was determined to be a ...
An Experimental and Theoretical Investigation of Rotating Detonation Rocket Engine Wave Dynamics
(2026-04-30)
Rotating detonation rocket engines (RDREs) have combustion chamber geometries that are inherently susceptible to tangential combustion instabilities. Low-amplitude pressure oscillations in the combustion chamber couple ...
An Experimental Investigation into the Wildland Fire Burning Characteristics of Loblolly Pine Straw
(2021-07-19)
Wildland fires present a threat to both the environment and to homes and businesses in the wildland urban interface. Understanding the behavior of wildland fires is crucial for developing informed risk management techniques, ...
An Experimental Investigation of Confined Cyclonic Flows and Ensuing Jet
(2021-05-03)
Confined cyclonic flows are being explored for their application in propulsion due to several advantages rendered by confined vortices which include, increased fuel residence time, turbulence, and propellant mixing, resulting ...