Browsing by Department "Aerospace Engineering"
Now showing items 141-153 of 153
Tapered Grain Geometry and Statistical Learning for Solid Rocket Motor Simulation
(2023-04-26)
This thesis investigates applying statistical learning techniques to a tapered grain solid rocket motor simulation. Tapered grain solid rocket motors (SRMs) have application in both defense and space industries. Tapered ...
Three Dimensional Flow Visualization of the Adverse Pressure Gradient Turbulent Boundary Layer
(2015-05-07)
An adverse pressure gradient (APG) turbulent boundary layer is investigated using a three dimensional scanning flow visualization technique. This dissertation includes an introduction to the structures and past research ...
Three-Dimensional Crater Formation Measurements During Plume-Surface Interaction in a Reduced Gravity Environment
(2024-04-29)
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 ...
Three-Dimensional Trajectory Optimization in Constrained Airspace
(2007-12-15)
This dissertation deals with the generation of three-dimensional optimized trajectory
in constrained airspace. It expands the previously used two-dimensional aircraft
model to a three-dimensional model and includes the ...
Three-Dimensional Velocity Measurements in the Wake of a Hemispherical Roughness Element Using Plenoptic Particle Image Velocimetry
(2016-08-01)
Plenoptic particle image velocimetry (PIV) was used to perform instantaneous three-dimensional (3D) velocity measurements in the near-wake of a wall-mounted hemispherical roughness element at a Reynolds number (based on ...
The Tiger Optimization Software - A Pseudospectral Optimal Control Package
(2022-11-29)
The fields of trajectory optimization and optimal control are closely connected. Practical trajectory optimization techniques are built on the indirect and direct methods for solving optimal control problems. Indirect ...
Tomographic Plenoptic Background Oriented Schlieren Imaging
(2020-12-10)
Within the last decade, tomographic background oriented schlieren has become an advanced flow diagnostic used to reconstruct three-dimensional density and/or refractive index fields. These three-dimensional measurements ...
Towards Learning Autonomous Spacecraft Path-Planning from Demonstrations and Environment Interactions
(2022-05-04)
An increasing interest in the robotic exploration of uncharted space environments is warranting a spacecraft path-planning approach that is capable of producing not only autonomous, but also generalized solutions. Though ...
Triglobal Stability Analysis of the Thermoacoustic Field in Rocket Engines
(2020-08-14)
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 ...
Turbine Aerothermal Optimization Using Evolution Strategies
(2014-04-07)
The use of adaptive optimizers in turbine blade geometry design is discussed. Many different adaptive optimizers have been applied to turbine blade design in the past, but often the optimizer does not fit the problem and ...
Volumetric PIV Measurement in the Wake of Wavy Cylinder
(2014-07-11)
The three-dimensional laminar flow over a straight cylinder with sinusoidal variation of cross-section was investigated using a volumetric Particle Image Velocimetry at Reynolds numbers of 15,000 and 20,000 and compared ...
Vortex Topology of a Pitching and Rolling Wing in Forward Flight
(2019-12-09)
Vortex topology is analyzed from measurements of flow over a flat, rectangular plate with an aspect ratio of 2 which was articulated in pitch and roll, individually and simultaneously. The plate was immersed into a Re = ...
Yaw-Roll Coupled Oscillations of a Slender Delta Wing
(2008-08-15)
The delta wing has been a highly studied aerial planform, from counter rotating vortices to a rolling `wing rock' motion. The research done at Auburn University is an extension of those studies. This research studies not ...