Browsing by Author "Scarborough, David"

Now showing items 1-18 of 18

Accelerating Binary Genetic Algorithm Driven Missile Design Optimization Routine with a CUDA Coded Six Degrees-Of-Freedom Simulator

Benton, Daniel (2015-12-04)

Science and Engineering has benefited enormously from the advent of modern (digital) computing. As technology continues to grow, computation capability becomes exponentially faster, more reliable, and more efficient. While ...

Characterization of Swirl-Driven Hybrid Rocket Engines

Marquardt, Timothy (2020-11-03) ETD File Embargoed

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 ...

A Comparison of Particle Tracking and Sizing Using Plenoptic Imaging and Digital In-line Holography

Munz, Elise (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 ...

A Computational Fluid Dynamics Analysis of a Driver-Assistive Truck Platooning System with Lateral Offset

Humphreys, Hugh (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 ...

Computational Vorticoacoustic Stability Analysis of the Bidirectional Vortex Engine

Kovacic, Paul (2016-05-04)

Since the invention of combustion-based propulsion systems, the presence of resonating, broadband waves has often been associated with the onset of a phenomenon known as "combustion instability." These waves commonly take ...

Control Volume Analysis of Rectangular Ducts with Arbitrary Mean-Flow, Transverse Wall Impedances, and Temperature Discontinuity

Morehead, Connor (2020-04-20)

Combustion instabilities (CIs) are a consistent and ubiquitous problem for industrial burners, rockets, and gas turbines. Reduced order acoustic models are often used to analyze combustion instabilities. Typically, reduced ...

Development and uncertainty characterization of 3D particle location from refocused and perspective shifted plenoptic images

Hall, Elise (2019-06-13)

In recent years, the development of non-invasive 3D diagnostics has become a significant area of research due to the wide variety of available techniques and the multitude of engineering problems that benefit from these ...

Development of a Multi-band Plenoptic Camera for High Temperature Measurements

Kelly, Dustin (2020-05-13)

In this thesis, the development of a novel multi-band plenoptic pyrometer is discussed and applied to several applications of interest in the engineering field. The multi-band plenoptic camera is a non-contact measurement ...

Development of a Two Dimensional, Optically Accessible, Hybrid Rocket Motor

Boyle, Sadie (2019-09-06)

Traditionally, launch vehicles and in-space vehicles use solid rocket motors (SRM) and liquid rocket engines (LRE) to propel them into and through space. However, there are many drawbacks to both propulsion systems. Hybrid ...

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

Phillips, Matthew (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 ...

An Experimental Investigation into the Wildland Fire Burning Characteristics of Loblolly Pine Straw

Stubbs, Daniel (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 Study of the Propagation of Equivalence Ratio Oscillations on their Effect on Combustion Instabilities

Walker, Josh (2019-04-23)

Lean premixed combustors have become a promising method in gas turbine engines to operate more efficiently and within the regulatory standards for emissions. However, this lean premixed operation is susceptible to combustion ...

Investigation of Aeroacoustic Effects of Trailing-Edge Modifications to Blades of a Coaxial Counter-rotating Rotor

Munz, Karlyle (2020-11-17)

Noise generated by the rotor blades of modern UAVs pose significant limitations to the widespread adoption of UAVs in the future. To mitigate noise production, rotor blades with a serrated trailing-edge have been used to ...

On the development of a Neural Radiance Field technique for tomographic reconstruction applied to flow diagnostics

Kelly, Dustin (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 ...

Single Camera 3D Measurement of a Shock Wave-Turbulent Boundary Layer Interaction

Bolton, Johnathan (2017-04-21)

This paper explores the 3D structure of an unswept fin generated shock wave-turbulent boundary layer interaction (SBLI). A Mach 2 flow encounters an unswept fin at an angle of attack of 15 degrees which causes an inviscid, ...

A Study of the Nonlinear Acoustic Response of Area-contractions and Sense-lines

Teasley, Thomas (2017-12-08)

Rocket and gas turbine engine combustion instabilities, which lead to rapid engine failure through enhanced heat transfer rates and high-cycle fatigue, continue to be a serious concern for engineers. Experimental pressure ...

Three-Dimensional Crater Formation Measurements During Plume-Surface Interaction in a Reduced Gravity Environment

Crane, Trevor (2024-04-29) ETD File Embargoed

Plume-surface interaction experiments were conducted in a 4.27 m tall drop tower facility to achieve 0g conditions, where g is Earth gravity at 9.81 m/s^2. Following the drop tower experiments, Martian (0.38g) and Lunar ...

Triglobal Stability Analysis of the Thermoacoustic Field in Rocket Engines

Kovacic, Paul (2020-08-14) ETD File Embargoed

One of the most daunting problems in the development of a rocket engine is the appearance of coherent oscillatory structures in the flow. Characterized primarily by fluctuations in pressure, these oscillations can sync ...