Browsing by Department "Aerospace Engineering"
Now showing items 61-80 of 153
Development of an Optically Accessible High-Pressure Strand Burner and the Experimental Determination of the Burn Rate of High Temperature Thermally Degraded HTPB/AP/AL Solid Propellant Combustion
(2020-08-18)
This thesis presents initial findings from solid propellant experiments using thermally degraded hydroxyl-terminated polybutadiene, ammonium perchlorate, and aluminum powder propellants. Currently, a better understanding ...
Development of atomistic and concurrent atomistic-continuum frameworks to model shock wave propagation and phonon transmission
(2023-04-17)
In the first part of this dissertation, we develop a long-time moving window framework using Molecular Dynamics (MD) to model shock wave propagation through a one-dimensional monatomic chain. The moving window formulation ...
Development of Metal 3D-Printed Helium-Filled Soap Bubble Nozzles
(2020-11-20)
Particle Image Velocimetry (PIV) is a useful flow visualization technique to obtain instantaneous velocity measurements of a fluid. The use of traditional tracer particles for PIV measurements is limited to small field of ...
Development of Self-Degrading 3D Printed Polymer Matrix Composites via Moisture Absorption Evaluation
(2020-07-15)
Polymer degradation is a change in properties such as strength, color, shape, of a polymer or polymer-based material due to the effect of one or more environmental factors. These factors include heat, light or chemicals ...
Discretization Error Estimation Using Method Of Nearby Problems: One-Dimensional Cases
(2005-12-15)
Discretization error is defined as the difference between the solution of the discretized equation and the exact solution of the original partial differential equation. There are two main goals in this study. The first ...
Dynamic compressive behavior of additively manufactured 17-4 PH stainless steel
(2023-12-04)
This work focuses on additively manufactured 17-4 PH stainless steel and establishing a correlation between microstructure/printing speed to the dynamic response. Two different methods of additive manufacturing namely Laser ...
Dynamic Stability and Control: Methods and Developments
(2017-01-10)
The purpose of this work is to assess the overall usage, evaluation, and understanding of damping derivatives with a focus on accuracy needs and computational efficiency. With the increased usage of neutrally stable and/or ...
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 ...
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 ...
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 ...
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 ...