Browsing Auburn University Graduate School by Department "Aerospace Engineering"
Now showing items 21-40 of 179
Application of the Level Set Method to Solid Rocket Motor Simulation
(2012-04-19)
The body of work encompassed in this thesis merges two advanced concepts for developing
flow solutions with level sets to develop an accurate and e cient method for simulating solid rocket motor grain regression. The ...
` Applying System Engineering Paradigms to Develop a Robust Finite Element Analysis Model of a 12U CubeSat
(2024-12-17)
Compelled by the prospect of working in the exciting and revamped space industry,
students join CubeSat projects to gain the skills and experience necessary to become competitive
in the industry’s job market. The ultimate ...
Automated Nozzle Design through Axis-Symmetric Method of Characteristics Coupled with Chemical Kinetics
(2012-05-10)
A method of designing axis-symmetric nozzles with included finite-rate chemical kinetics has been developed. The use of the axis-symmetric method of characteristics coupled with finite-rate chemistry allows for the design ...
Autonomy, Guidance, and Control Strategies for Safe Operation of Aerospace Vehicles
(2025-08-05)
This dissertation is structured around three core research problems, each addressing a fundamental challenge in enabling safer operation of aerospace vehicles. While the primary motivation stems from the growing use of ...
The Characteristics and Interactions of Mixed Pyrophyte and Mesophyte Litter Fuel Beds
(2024-07-24)
Oak trees are of great ecological and economic importance in the southeastern United States. These trees are being replaced through the mesophication process, presenting a major risk to regional ecosystems. This study ...
Characterization of Additively Manufactured Mechanical Metamaterials
(2021-08-02)
Designing materials that are lightweight while achieving a desirable combination of mechanical, thermal, and other physical properties is an aspiration in material science. Lattice structures are suitable aspirant to achieve ...
Characterization of High Speed and Arbitrary Headwall Injection Effects on the Trkalian Swirling Mean Flowfield in Rocket Motors
(2016-07-28)
In this work, the bulk gaseous motion inside cylindrical chambers driven by wall normal injection with and without reactive headwalls is explored. The base model is of the Trkalian type and is here extended to include ...
Characterization of Numerical Error in the Simulation of Translunar Trajectories Using the Method of Nearby Problems
(2011-05-04)
This thesis focuses on analyzing the effect numerical error has on the accurate simulation of translunar trajectories. The method of nearby problems is employed to estimate the numerical error. A simulation is developed ...
Characterization of Swirl-Driven Hybrid Rocket Engines
(2020-11-03)
Although hybrid rockets offer several potential benefits in terms of safety and performance, their use has mostly been limited to lab-scale motors and academic settings. Foremost among the factors contributing to this ...
Cislunar Trajectory Design Techniques in Virtual Reality
(2023-08-01)
Mathematical models of various astrodynamical systems in the Solar system and identification of solutions within these models are crucial for the burgeoning space exploration efforts carried out by the government agencies ...
Civil UAV Type Certification: DoD Mishap Analysis 2000-2009 and FAA Certification Roadmap
(2012-08-29)
The Federal Aviation Administration (FAA) has issued memorandums which support the use of flight activities which can demonstrate that proposed operation can be conducted at an acceptable level of safety. This paper ...
Close-Proximity Flight Validation Analysis with FlightStream
(2019-08-08)
The objective of this research is to validate the use of FlightStream® in accurately predicting aerodynamic loads in a scenario of close-proximity flight, such as an aerial refueling and formation flight environment. The ...
A Cognitive Hierarchical Framework for Multivehicle Collision-Free Traffic Management of Unregulated Intersections
(2025-04-23)
Autonomous vehicles are becoming increasingly popular, requiring efficient and reliable methods for trajectory generation and path planning. A common approach is to convert the original continuous-time optimization problem ...
Collaborative UAS Control to Increase Deconfliction Ability in the NAS
(2009-07-15)
The progression of aviation has led to the strong desire to integrate unmanned
aerial systems (UASs) into the national airspace system (NAS). In order for UASs to
occupy the NAS concurrently with other aircraft, the ...
A Comparison of Artificial Viscosity Sensors for the Discontinuous Galerkin Method
(2013-08-20)
The following work focuses on the development of an explicit Runge-Kutta, discontinuous Galerkin finite element method for the nonlinear, hyperbolic Euler equations. The discontinuous Galerkin method is a control-volume ...
A Comparison of Particle Tracking and Sizing Using Plenoptic Imaging and Digital In-line Holography
(2016-04-22)
Digital in-line holography and plenoptic photography are two techniques for single-shot, volumetric measurement of 3D particle fields. A preliminary comparison of the two methods is presented by applying plenoptic imaging ...
Compressible Biglobal Stability of Rocket Internal Flowfields
(2026-01-07)
Combustion instability remains one of the most persistent challenges in rocket propulsion, where the nonlinear interaction between hydrodynamic structures and acoustic resonances can precipitate severe performance degradation ...
Computational Characterization of Drag Reduction for Platooning Heavy Vehicles
(2015-05-06)
This thesis uses Computational Fluid Dynamics to analyze the aerodynamic properties of multiple heavy vehicle groups in leader-follower configurations, referred to as platoons. The primary metric of interest is the resistive ...
A Computational Fluid Dynamics Analysis of a Driver-Assistive Truck Platooning System with Lateral Offset
(2017-04-17)
This study utilizes Computational Fluid Dynamics to analyze the aerodynamic drag performance of a two-truck Driver-Assistive Truck Platooning system. Simulations were conducted to characterize the drag reduction versus ...
A Computational Fluid Dynamics Analysis of Shock Wave-Boundary Layer Interactions
(2018-07-20)
With the continuous development of Computational Fluid Dynamics (CFD), many different numerical methods and turbulence models have been modified to enhance the capability of prediction of complex turbulence flow. This study ...