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Express Risk Assessment For The Dispersion Of Aerosols In An Urban Environment Using Probabilistic Implicit Tracking, Steven Lee Rowan
Express Risk Assessment For The Dispersion Of Aerosols In An Urban Environment Using Probabilistic Implicit Tracking, Steven Lee Rowan
Graduate Theses, Dissertations, and Problem Reports
The dispersion or transport of an airborne aerosol, whether the result of pollution or terrorist attack, is a topic of much interest to researchers and governmental officials in the United States. Due to this, there have been numerous efforts to develop accurate aerosol dispersion models utilizing computational fluid dynamics (CFD) and Lagrangian Particle Dynamics (LPD) in order to predict how an aerosol-suspended material will propagate in an urban environment. However, the complexity of these models require significant amounts of computational resources and are not practical for quickly modeling an actual event.;In this study, a stochastic simulation of Probabilistic Implicit Tracking …
Development Of A Numerical Model Of A Two-Dimensional Inertial Gas Separator, Henry Z. Graham Iv
Development Of A Numerical Model Of A Two-Dimensional Inertial Gas Separator, Henry Z. Graham Iv
Graduate Theses, Dissertations, and Problem Reports
The separation of gases is required for a variety of applications such as purification for industrial processes, natural gas production, isotope formation, etc. Gas separation is a costly expenditure for businesses, so new and improved methods are being continuously investigated. Separation techniques related to the method in this thesis are diffusion separators such as mechanical centrifuges, vortexes and the use of shock waves to cause the separation based on the molecular weight of the different gases. These methods and others are constantly being investigated and improved to increase their effectiveness.;The purpose of this thesis was to determine if the design …
Effects Of The Electric Kelvin Force On Spray Cooling Performance, Shannon Lynnette Glaspell
Effects Of The Electric Kelvin Force On Spray Cooling Performance, Shannon Lynnette Glaspell
Graduate Theses, Dissertations, and Problem Reports
Spray cooling is an efficient thermal management technique that may possibly be improved by employing an electric Kelvin force to control the fluid motion and delay the onset of critical heat flux. In the present study, a spray cooling apparatus consisting of a spray chamber (housing a spray nozzle and electrically heated surface) and a flow generating base package has been built and tested for varying nozzle-to-heater distances and also varying electrode geometries for a range of spray conditions and electrode voltages. The two part goal was to first determine the qualitative sensitivity of the distance between the heated surface …
Design Of A Quick-Release Mechanism For A C-130 Aircraft Sensor Platform, Seth D. Lucey
Design Of A Quick-Release Mechanism For A C-130 Aircraft Sensor Platform, Seth D. Lucey
Graduate Theses, Dissertations, and Problem Reports
The development of a standardized sensor pallet system for a C-130 aircraft was conceived by the Center for Industrial Research Applications at West Virginia University to assist in counterdrug reconnaissance activities within the United States. The system has been completed and is now being optimized for various uses in addition to counterdrug reconnaissance. It is sought to have the sensor carriers/housings easily interchangeable so that they may be switched in the field by operators rather than in the hangar by technicians. The design parameters were established by the National Guard mission requirements and by the limitations of the C-130 aircraft. …
Characterization Of Self -Healing Composite Materials, Kevin John Ford
Characterization Of Self -Healing Composite Materials, Kevin John Ford
Graduate Theses, Dissertations, and Problem Reports
Damage occurs in almost every composite material in the form of microcracks that develop in the epoxy matrix that binds the fibers together. Researchers at the University of Illinois Urbana Champaign have recently developed a method to reverse the effects of, or heal, damage in the epoxy matrix. Their in-situ self-healing system uses embedded microcapsules and a catalyst that trigger a romp reaction in an effort to rebond the microcracks. Several models have been developed in an effort to predict how a composite laminate damages. One model in particular, the Continuous Damage Mechanics model, CDM that has been developed at …
A Rotational Arm Connection Point Design For A C-130 Aircraft Standardized Sensor Platform, Kenneth A. Williams
A Rotational Arm Connection Point Design For A C-130 Aircraft Standardized Sensor Platform, Kenneth A. Williams
Graduate Theses, Dissertations, and Problem Reports
West Virginia University's Center for Industrial Research Applications (CIRA) was sponsored by the United States Army National Guard (USANG) and the Department of Defense (DOD) to design a standardized, articulating sensor platform for the C-130 Hercules military aircraft. This sensor platform was to be capable of in-flight deployment and capable of facilitating a diverse spectrum of sensor configurations in order to aid in surveillance and reconnaissance for counter narco-terrorism efforts. Two complete sensor pallet prototypes have been developed. The current platform configuration consists of four aluminum arms that are connected to a rotational shaft via a cylindrical hub. For the …
Machine Vision Applications In Uavs For Autonomous Aerial Refueling And Runway Detection, Larry W. Rowe Ii
Machine Vision Applications In Uavs For Autonomous Aerial Refueling And Runway Detection, Larry W. Rowe Ii
Graduate Theses, Dissertations, and Problem Reports
This research focuses on the application of Machine Vision (MV) techniques and algorithms to the problems of Autonomous Aerial Refueling (AAR) and Runway Detection. In particular, real laboratory based hardware was used in a simulated environment to emulate real-life conditions for AAR. It was shown that the K-Means Clustering Algorithm solution to the Marker Detection problem could be executed at a frame rate of 30 Hz and it averaged a tracking error of less than one pixel while utilizing only 0.16% of the image. It was also shown that the solution to the Runway Detection problem could be executed at …
Addressing Corner Detection Issues For Machine Vision Based Uav Aerial Refueling, Soujanya Vendra
Addressing Corner Detection Issues For Machine Vision Based Uav Aerial Refueling, Soujanya Vendra
Graduate Theses, Dissertations, and Problem Reports
The need for developing autonomous aerial refueling capabilities for an Unmanned Aerial Vehicle (UAV) has risen out of the growing importance of UAVs in military and non-military applications. The AAR capabilities would improve the range and the loiter time capabilities of UAVs. A number of AAR techniques have been proposed, based on GPS based measurements and Machine Vision based measurements. The GPS based measurements suffer from distorted data in the wake of the tanker. The MV based techniques proposed the use of optical markers which---when detected---were used to determine relative orientation and position of the tanker and the UAV. The …
Design And Simulation Of Advanced Fault Tolerant Flight Control Schemes, Srikanth Gururajan
Design And Simulation Of Advanced Fault Tolerant Flight Control Schemes, Srikanth Gururajan
Graduate Theses, Dissertations, and Problem Reports
This research effort describes the design and simulation of a distributed Neural Network (NN) based fault tolerant flight control scheme and the interface of the scheme within a simulation/visualization environment. The goal of the fault tolerant flight control scheme is to recover an aircraft from failures to its sensors or actuators. A commercially available simulation package, Aviator Visual Design Simulator (AVDS), was used for the purpose of simulation and visualization of the aircraft dynamics and the performance of the control schemes.;For the purpose of the sensor failure detection, identification and accommodation (SFDIA) task, it is assumed that the pitch, roll …