School of Aerospace Engineering Theses and Dissertations
Original work in partial fulfillment of a graduate degree in the School of Aerospace Engineering
All materials in SMARTech are protected under U.S. Copyright Law and all rights are reserved. Such materials may be used, quoted or reproduced for educational purposes only with prior permission, provided proper attribution is given. Any redistribution, reproduction or use of the materials, in whole or in part, is prohibited without prior permission of the author.
Recent Submissions
-
A Methodology for the Optimization of Robust Unmanned Vehicle Communications in Maritime Environments
(Georgia Institute of Technology, 2017-04-17)As the military moves towards using more unmanned vehicles in the operational environment, accounting for communications during the mission planning phases is critical to meet the mission objectives. The quality of radio ... -
An Uncertainty Quantification and Management Methodology to Support Rework Decisions in Multifidelity Aeroelastic Load Cycles
(Georgia Institute of Technology, 2017-04-07)Cost overruns and schedule delays have plagued almost all major aerospace development programs and have resulted in billions of dollars lost. Design rework has attributed to these problems and one approach to mitigating ... -
Formulation of an uncertainty based methodology for advanced technology performance prediction
(Georgia Institute of Technology, 2017-04-06)Challenges within the aviation industry stem from interdependencies between environmental goals that require engineers to make trade-offs between them. When faced with multi-objective problems like these, engineers and ... -
Initialization of Sequential Estimation for Unobservable Dynamical Systems Using Partial Information in the Presence of Systemic Uncertainty
(Georgia Institute of Technology, 2017-04-07)Space Situational Awareness (SSA) is defined the ability to characterize as fully as possible the space environment. Short, unobservable measurement sequences pose a challenge for traditional state estimation methodologies ... -
A Methodology to Achieve Microscopic/Macroscopic Configuration Tradeoffs in Cooperative Multi-Robot Systems Design
(Georgia Institute of Technology, 2017-04-04)The exponential growth experienced by the robotics sector over the past decade has fostered the proliferation of new architectures. Optimized for specific missions, these platforms are in most cases limited by their embarked ... -
A Framework For The Optimization of Doctrine and Systems in Army Air Defense Units Using Predictive Models of Stochastic Computer Simulations
(Georgia Institute of Technology, 2017-04-05)This thesis presents a new methodology that can be used to address large-scale raids made up of different types of Theater Ballistic Missiles (TBMs) and Cruise Missiles (CMs) that attempt to overwhelm the Air Defense ... -
A Surface Vorticity Method for Wake–Body Interactions
(Georgia Institute of Technology, 2017-04-06)The objective of this dissertation research is to develop a surface vorticity method for simulating high Reynolds number incompressible aerodynamic flows with strong unsteady interactions between wakes and lifting bodies. ... -
A Simulation Framework for Evaluation of Real-time Electric Vehicle (EV) Charging Control Strategy and Investigation of Its Interaction with V2G-based Frequency Regulation
(Georgia Institute of Technology, 2017-04-06)Unlike conventional vehicles propelled by internal combustion engine (ICE), an electric vehicle (EV) is powered by an electric motor with rechargeable battery packs. EVs can offer significant potential for increasing energy ... -
PREDICTIVE HELICOPTER FLIGHT DATA MONITORING FOR FLIGHT SAFETY DESIGN
(Georgia Institute of Technology, 2017-01-13)A method to augment existing Helicopter Flight Data Monitoring (HFDM) systems using physics-based models was proposed. It was suggested that physics-based models can be utilized to derive condition indicators (“events” or ... -
Experimental Study of Spray-Formation Processes in Twin-Fluid Jet-in-Crossflow at Jet-Engine Operating Conditions
(Georgia Institute of Technology, 2017-01-05)The jet-in-crossflow (JICF) fuel-injection technique is widely applied in modern jet-engine fuel-air mixers to provide rapid fuel atomization and mixing. However, the “Classical” JICF places large amounts of fuel into the ... -
A Multi-Level Multi-Design Point Approach for Gas Turbine Cycle and Turbine Conceptual Design
(Georgia Institute of Technology, 2017-01-09)In order to address key challenges facing the aviation industry, NASA’s Advanced Air Vehicle Program researches new aircraft technologies and concepts. Developing these new technologies and concepts is becoming increasingly ... -
Safety Supervisory Control, Model-Based Hazard Monitoring, and Temporal Logic: Dynamic Risk-Informed Safety Interventions and Accident Prevention
(Georgia Institute of Technology, 2016-03-14)Accident prevention and system safety are important considerations for many industries, especially large-scale hazardous ones such as the nuclear, the chemical, and the aerospace industries. Limitations in the current tools ... -
A two-stage probability based, conservatism reduction methodology for traditional Minimax robust control system design
(Georgia Institute of Technology, 2016-04-12)A two-stage, probability-based controller design methodology is proposed to reduce the conservatism from traditional robust minimax controller design method, by relaxing the norm-bounded parameter uncertainty constraint ... -
Partial attitude synchronization of underactuated spacecraft systems
(Georgia Institute of Technology, 2016-12-09)Numerous works have investigated problems concerning the complete attitude consensus of multi-spacecraft systems as well as the attitude control of an underactuated spacecraft, where only two or fewer control torques are ... -
Geometric feature extraction in support of the single digital thread approach to detailed design
(Georgia Institute of Technology, 2016-12-08)Aircraft design is a multi-disciplinary and complicated process that takes a long time and requires a large number of trade-offs between customer requirements, various types of constraints and market competition. ... -
Calibrating the inertial coordinate system of the miniature inertial measurement unit on SAGE III ISS
(Georgia Institute of Technology, 2016-12-09)The Stratospheric Aerosol and Gas Experiment III (SAGE III) on the International Space Station (ISS) will extend NASA Langley Research Center's long legacy of satellite atmospheric occultation measurements. Unlike its ... -
A framework for value-driven aircraft family design for dynamic market systems under uncertainty and strategic competition
(Georgia Institute of Technology, 2016-11-28)Aircraft family design and production is a complicated process that includes numerous decisions across various disciplines, where these decisions should be made in a coordinated manner to maximize the program value. ... -
Electrical facility effects on Hall effect thrusters
(Georgia Institute of Technology, 2016-11-15)The Hall effect thruster (HET) is a type of spacecraft propulsion that is used for satellite orbit raising and station keeping. HET development and lifetime qualification tests are performed in ground-based vacuum facilities. ... -
A computational approach for preliminary combustor design and gaseous emissions evaluations using a method for sparse kinetics
(Georgia Institute of Technology, 2016-11-15)Despite numerous advances in the fields of numerical computing and experimentation, the development of new gas turbine combustors continues to be an extremely costly endeavor. Contemporary aircraft engine component design ... -
Method for the flight path optimization of the electric-powered reconfigurable rotor (EPR2) VTOL concept
(Georgia Institute of Technology, 2016-11-09)Vertical Takeoff and Landing aircraft (VTOL) have been essential to our society since their introduction in the mid-1940s.Today, helicopters are extensively used for military and civilian applications such as search and ...
RSS 1.0