This Is AuburnElectronic Theses and Dissertations

Browsing by Department "Aerospace Engineering"

Now showing items 1-20 of 131

3-D Visualization of a Zero-Pressure Gradient Turbulent Boundary Layer 

Williams, Steven (2010-05-10)
The application of a novel technique for 3-D visualization of a zero-pressure gradient turbulent boundary layer is discussed. Measurements of a 1.65δ x 1.65δ x 1.65δ volume were taken at a flow speed of 96 ft/s, Reθ ~ 5900, ...

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 ...

Aerodynamic Analysis of a Morphing Wing Using Vorticity Based Solver 

Sathe, Shivaranjani (2019-07-16)
This study addresses an efficient approach to analyzing Variable Camber continuous trailing edge flaps (VCCTEF) wings, which mimics the concept of morphing or shape changing wings. The validation model used in this research ...

Aerodynamic loads over arbitrary bodies by method of integrated circulation 

Ahuja, Vivek (2013-07-24)
A method for the application of vorticity based potential-flow solvers to unstructured surface meshes has been created. This method is designed to maintain the advantages of the vorticity based solvers while removing the ...

Aerodynamic Optimization for Freight Trucks Using a Genetic Algorithm and CFD 

Doyle, Joshua (2007-12-15)
A computational fluid dynamics (CFD) code is being combined with a genetic algorithm (GA) to perform a two-dimensional drag minimization study on tractor trailers. This paper involves the minimization of drag on two different ...

Aerodynamic Optimization of Integrated Wing-Engine Geometry Using an Unstructured Vorticity Solver 

King, Logan (2015-05-29)
A high fidelity surface vorticity solver in conjunction with an optimizer is used to find optimal solutions for engine integration. The case study for this paper is an aerodynamically optimized engine configuration added ...

Aerodynamic Testing of a Circular Planform Concept Aircraft 

Recktenwald, Bryan (2008-08-15)
Auburn University has entered into collaboration with Geobat Flying Saucer Aviation Inc. for aerodynamic and flow visualization studies of the Geobat aircraft. The aircraft model that was tested consisted of a circular ...

Aerodynamics of Wrap-Around Fins in Supersonic Flow 

Wilks, Brett (2005-12-15)
Existing supersonic fin theory has been modified to compute the pressure distribution over a wrap-around fin. Evvard’s theory has been used to calculate the pressure loading due to angle-of-attack on a wrap-around fin by ...

Aerospace Design Optimization Using A Compound Repulsive Particle Swarm 

Badyrka, Jeffrey (2011-04-06)
This study compares contemporary design optimization algorithms for use in missile design applications. The engineering design problem for this study is the development of a desired single stage solid propellant missile ...

Aerospace Design Optimization Using a Real Coded Genetic Algorithm 

Dyer, John (2008-05-15)
This study demonstrates the advantages of using a real coded genetic algorithm (GA) for aerospace engineering design applications. A real coded GA was written from first principles for this study and the source code can ...

Angles-Only Initial Relative-Orbit Determination via Successive Maneuvers 

Hebert, Laura (2016-04-29)
For relative-orbit determination using linear, Cartesian dynamics, angles-only measurements are not sufficient. A known, impulsive maneuver performed by either the observer or resident space object can provide observability. ...

Ant Colony Optimization : An Alternative Heuristic for Aerospace Design Applications 

Kiyak, Zachary (2014-01-09)
A modified ant colony optimization (ACO) algorithm is applied to a set of solid-rocket-motor and single-stage solid missile design problems. A local search procedure is also integrated with the algorithm, adding a search ...

The Application of a Particle Filter to Urban Ground Target Localization, Tracking, and Intercept 

Doucette, Emily (2012-05-01)
Ground vehicle localization is a problem of significance in an urban setting given the recent global conflicts, security interests, and rapid growth of sensor networks. This task is often difficult due to the lack of ...

Application of the Discontinuous Galerkin Method to Wake Vortex Flows 

Watson, Robert, III (2015-02-19)
A code was developed that utilizes the discontinuous Galerkin method to solve the Euler equations while utilizing a modal arti cial viscosity sensor developed by Klockner [12]. The sensor was augmented for the purpose ...

Application of the Level Set Method to Solid Rocket Motor Simulation 

Albarado, Kevin (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 ...

Automated Nozzle Design through Axis-Symmetric Method of Characteristics Coupled with Chemical Kinetics 

Young, Reid (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 ...

Characterization of Additively Manufactured Mechanical Metamaterials 

Giri, Tark (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 

Cecil, Orie (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 

Jagat, Ashish (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 

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 ...