Browsing by Department "Aerospace Engineering"
Now showing items 101-120 of 153
Life Prediction Analysis of a Subscale Rocket Engine Combustor using a Fluid-Thermal-Structural Model
(2006-05-15)
The focus of this thesis was on performing a non-linear transient fluid-thermal-structural analysis of the cooling jacket for a scale model rocket engine thrust chamber. The model was for a water cooled annular plug nozzle ...
Mapped Adjoint Control Transformation for Low-Thrust Space Mission Design
(2023-07-27)
Spacecraft trajectory optimization is an essential task in space mission design. The propulsion system of the spacecraft can affect the type of trajectories that can be realized by a spacecraft. In the past few decades, ...
Mapping for Path Planning using Maximal Empty Rectangles
(2013-05-14)
This study applies a new map representation, named R-map, to the path-planning problem. The R-map is calculated as a reduced-element representation of a grid map. Grid maps express obstacles and free space with a binary ...
Mercury Impact Ejecta’s Contribution to its Own Meteoroid Population
(2022-04-21)
Mercury’s position in the inner Solar System and lack of an atmosphere subjects it to the greatest mean velocity impacts of the inner Solar System. Ejecta launched at speeds less than 4.25 km/s are retained by the planet ...
A Method For Obtaining New Conservation Quantities and a Solution Method For the N-Body Collision
(2019-08-15)
Exact, numerical, and perturbative methods are commonly used to solve dynamical systems of equations. Many systems’ solutions cannot be written in terms of elementary functions thus numerical and perturbative solutions ...
A Methodology for Detecting Pilot Fatigue and Head Tilt Measured Using Flight Simulation of an Unmanned Aerial Vehicle
(2013-04-16)
The objective of this research project was to determine whether the human factors of
fatigue and head tilt can be detected in real time by measuring the head motion of pilots
flying simulated unmanned aircraft missions. ...
Methods for Optimization of a Launch Vehicle for Pressure Fluctuation Levels and Axial Force
(2008-08-15)
A computational fluid dynamics (CFD) code has been combined with a Genetic Algorithm (GA) to perform a shape optimization study on a two dimensional axisymmetric model of a typical launch vehicle. The objective of this ...
Modeling Environments for Exploration of Business Dynamics within P-LEO Constellation Markets
(2023-05-01)
Due to recent investments in the space industry, companies have begun to further explore the business feasibility for space-based systems. This rapidly expanding space resources economy includes proliferated low Earth orbit ...
Nonlinear Dynamics and Control of Spacecraft Relative Motion
(2017-07-26)
The description and control of the relative motion of spacecraft has attracted a great deal of attention over the last five decades. This is as a result of its numerous applications in rendezvous and proximity operations, ...
Nonlinear Tracking of Natural Mechanical Systems for HWIL Simulation
(2007-08-15)
Auburn University has entered into collaboration with the US Department of Defense for academic study and development of hardware-in-the-loop simulation laboratory. One aspect of this collaboration has been research into ...
A Numerical Analysis of Heterogeneous and Homogeneous Truck Platoon Aerodynamic Drag Reduction
(2018-07-31)
The purpose of this study was to provide an analysis of the aerodynamic phenomena involved with the platooning of multiple truck-trailer configurations. With fuel usage being a large factor in high operational costs of ...
Numerical approaches to investigate small bodies’ properties in their structure and surface with case studies
(2023-04-27)
Asteroids, comets, and Kuiper-belt objects (aka. Small bodies) can tell us essential information to understand their evolutionary history and advance the history of our solar system. Since the currently available data on ...
Numerical Investigation of the Flow Topology in a Bidirectional Vortex Engine
(2023-03-30)
The characterization of swirl-driven phenomena, including cyclonic flows, continues to
receive attention in the propulsion community. This may be attributed to the beneficial
properties of swirl when integrated into ...
Numerical Study of High Lift Configurations
(2017-07-27)
This study investigates the numerical prediction capability of Computational Fluid Dynamics (CFD) in resolving the high-lift aerodynamics. Various numerical aspects in CFD is explored in this research which includes different ...
On the development of a Neural Radiance Field technique for tomographic reconstruction applied to flow diagnostics
(2024-04-25)
In this work, a novel neural implicit representation tomography algorithm based on Neural Radiance Fields is developed and demonstrated for 3D flow diagnostics. Neural Radiance Fields (NeRF) originate from the computer ...
On the Development of a Volumetric Velocimetry Technique using Multiple Plenoptic Cameras
(2018-08-29)
Plenoptic PIV was recently introduced as a viable three-dimensional, three-component velocimetry technique based on light field cameras. One of the main benefits of this technique is its single camera configuration allowing ...
Optimization of a Turboramjet Hot Section with an Interstage Turbine Burner
(2016-05-05)
A turbine based combined cycle engine (TBCC) is currently in development for use in the SR-72 reconnaissance aircraft, the successor to the SR-71 Blackbird. With a proposed operating range of Mach 0-6, there is a need for ...
Optimization of Fuel-Air Mixing for a Scramjet Combustor Geometry Using CFD and a Genetic Algorithm
(2008-12-15)
A new methodology for the optimization of fuel-air mixing in a scramjet combustor using integrated Genetic Algorithms and Computational Fluid Dynamics is presented. A typical combustor design involving Mach 2 crossflow ...
Optimum Propeller Design for Electric UAVs
(2012-05-16)
A propeller behaves as a rotating wing producing lift in the direction of the axis of
rotation. Many previous propeller optimization methods have been developed, but usually
focus on piston or turboprop applications. ...
Performance Comparison of an Extended Kalman Filter and an Iterated Extended Kalman Filter for Orbit Determination of Space Debris with Poor Apriori Information and Intermittent Observations
(2012-11-06)
The growing space debris population threatens active and future missions bound for low earth orbit.
The purpose of this study is to determine if an iterated extended Kalman filter (IEKF) can be used to yield better ...