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Full-Text Articles in Engineering
Control Of Separated Flow Using A Dielectric Barrier Discharge Plasma Actuator, Mahdi Hasan
Control Of Separated Flow Using A Dielectric Barrier Discharge Plasma Actuator, Mahdi Hasan
Theses
Historically, Dielectric Barrier Discharge (DBD) plasma actuators have shown to be an effective method to control adverse pressure gradient induced boundary layer separation. In this study, a numerical investigation was carried out to explore the effects of a DBD plasma actuator on a three-dimensional incompressible, separated flow. The well-validated National Aeronautics and Space Administration (NASA) wall-mounted hump configuration studied in the simulations, were run at a Reynolds Number of 936,000, based on chord length, and a freestream Mach number of 0.1. The baseline code, CALC-LES, developed by the Chalmers University of Technology was modified to include the effects of the …
Feedback Control For Leader Follower Architecture Of Unmanned Arial And Ground Vehicles, Mahmoud El Mahmoud
Feedback Control For Leader Follower Architecture Of Unmanned Arial And Ground Vehicles, Mahmoud El Mahmoud
Theses
This thesis presents development of a feedback controller for a cooperative mission using unmanned aerial vehicle and unmanned ground vehicle. This developed controller offers a solution to the time delayed collaborative autonomous systems for multiple robot systems. There are many motivating applications for these missions including exploration, search and rescue in damaged areas. The architecture developed in this thesis consists of an unmanned ground vehicle as a leader and an unmanned aerial vehicle as a follower. To be specific, the unmanned ground vehicle navigates through a damaged environment and leads the mission. The unmanned aerial vehicle follows the leader and …
Design And Fabrication Of A Remote-Controlled Plane For The Advanced Class Sae Aero Design Competition, Simon Esau
Design And Fabrication Of A Remote-Controlled Plane For The Advanced Class Sae Aero Design Competition, Simon Esau
Theses
The goal of the present research is to optimize the radio-controlled airplane design for the Society of Automotive Engineers International (SAE) Aero Design Advanced Class competition. The SAE Aero Design Advanced Class seeks to further research and development of an aeronautic system that can deliver cargo and passengers to form a colony on Mars. Mission success is achieved by attending to the rules, constraints, and requirements of the competition. System-level engineering is applied to meet these diverse requirements and create a robust final product. The radio-controlled airplane submitted for competition can theoretically be scaled to carry colonists, habitats, and supplies …
Thermal Characterization Of As4/3501-6 Carbon-Epoxy Composite, Bradley R. Doleman
Thermal Characterization Of As4/3501-6 Carbon-Epoxy Composite, Bradley R. Doleman
Theses
Thermal diffusivity, specific heat, and thermal conductivity are important thermophysical properties of composite materials and foams. Thermal characterization provides these material properties which play a significant role in the engineering design process of space systems, aerospace vehicles, transportation, energy storage devices, and power generation including fuel cells. Thermal conductivity is the parameter that is important in problems involving heat transfer and thermal structures. Because it determines the working temperature levels of a material, the thermal conductivity is critical when considering the performance of materials in high temperature applications as well as safety, process control, and quality assurance. As a result …
Examination Of Thermal Properties Of Carbon-Carbon And Graphitized Carbon-Carbon Composites, Melanie Jene' Patrick
Examination Of Thermal Properties Of Carbon-Carbon And Graphitized Carbon-Carbon Composites, Melanie Jene' Patrick
Theses
Thermal characterization of composites is essential for their proper assignment to a specific application. Specific heat, thermal diffusivity, and thermal conductivity of carbon-carbon composites are essential in the engineering design process and in the analysis of aerospace vehicles, space systems and other high temperature thermal systems. Specifically, thermal conductivity determines the working temperature levels of a material and is influential in its performance in high temperature applications. There is insufficient thermal property data for carbon-carbon composites over a range of temperatures. The purpose of this research is to develop a thermal properties database for carbon-carbon composites that will contain in-plane …