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Evaluation Of Machine Vision Techniques For Use Within Flight Control Systems, Marco Mammarella
Evaluation Of Machine Vision Techniques For Use Within Flight Control Systems, Marco Mammarella
Graduate Theses, Dissertations, and Problem Reports
In this thesis, two of the main technical limitations for a massive deployment of Unmanned Aerial Vehicle (UAV) have been considered.;The Aerial Refueling problem is analyzed in the first section. A solution based on the integration of 'conventional' GPS/INS and Machine Vision sensor is proposed with the purpose of measuring the relative distance between a refueling tanker and UAV. In this effort, comparisons between Point Matching (PM) algorithms and Pose Estimation (PE) algorithms have been developed in order to improve the performance of the Machine Vision sensor. A method of integration based on Extended Kalman Filter (EKF) between GPS/INS and …
Employ Sensor Fusion Techniques For Determining Aircraft Attitude And Position Information, Jason A. Jarrell
Employ Sensor Fusion Techniques For Determining Aircraft Attitude And Position Information, Jason A. Jarrell
Graduate Theses, Dissertations, and Problem Reports
Inertial Navigation Systems (INS) with the level of precision needed for Unmanned Aerial Vehicles (UAV) can easily cost more than the vehicle itself. This drastically increases the amount of aircraft power consumption and payload weight that drives the need for a low cost solution. This can be achieved through the use of sensor fusion techniques on low cost accelerometers and gyroscopes fused with Global Positioning System (GPS) data. In this paper, existing GPS and Inertial Measurement Unit (IMU) flight data is fused with the use of both an Kalman filter (KF) and Extended Kalman filter (EKF) methods for a more …
Mechanical Characterization Of Fabrics For Inflatable Structures, Juan Cruz Molina Pombo
Mechanical Characterization Of Fabrics For Inflatable Structures, Juan Cruz Molina Pombo
Graduate Theses, Dissertations, and Problem Reports
Several mechanical properties of fabrics for inflatable structures have been characterized. In this work, the characterization was done for fabrics in a tunnel plug. As a plug the structure should seal the tunnel and maintain itself static, for that reason the characterization of the frictional system tunnel wall/structure fabric is done. Also, by the study of the maximum stresses under this configuration, the tensile strength of the structural fabrics is studied. In order to characterize the fabric properties, friction and strength, a test for each of them was done.;The tensile strength test was performed for two fabrics, according to the …
Pilot In Loop Assessment Of Fault Tolerant Flight Control Schemes In A Motion Flight Simulator, Girish Kumar Sagoo
Pilot In Loop Assessment Of Fault Tolerant Flight Control Schemes In A Motion Flight Simulator, Girish Kumar Sagoo
Graduate Theses, Dissertations, and Problem Reports
This research presents the pilot in the loop tests carried out in a Six-Degree of Freedom (6-DOF) motion flight simulator to evaluate failure detection, isolation and identification (FDII) schemes for an advanced F-15 aircraft. The objective behind this study is to leverage the capability of the flight simulator at West Virginia University (WVU) to carry out a performance assessment of neurally augmented control algorithms developed on a Matlab/Simulink RTM platform. The experimental setup features an interface setup of Gen-2 SimulinkRTM schemes with MOTUS Flight Simulator (MFS). The set up is a close substitute to a real flight and thus is …
Prospects Of Lean Ignition With The Quarter Wave Coaxial Cavity Igniter, Franz Andreas Johannes Pertl
Prospects Of Lean Ignition With The Quarter Wave Coaxial Cavity Igniter, Franz Andreas Johannes Pertl
Graduate Theses, Dissertations, and Problem Reports
New ignition sources are needed to operate the next generation of lean high efficiency internal combustion engines. A significant environmental and economic benefit could be obtained from these lean engines. Toward this goal, the quarter wave coaxial cavity resonator, QWCCR, igniter was examined. A detailed theoretical analysis of the resonator was performed relating geometric and material parameters to performance characteristics, such as resonator quality factor and developed tip electric field. The analysis provided for the construction and evaluation of a resonator for ignition testing.;The evaluation consisted of ignition tests with liquefied-petroleum-gas (LPG) air mixtures of varying composition. The combustion of …
Design Validation Methodology Development For An Aircraft Sensor Deployment System, Zenovy S. Wowczuk
Design Validation Methodology Development For An Aircraft Sensor Deployment System, Zenovy S. Wowczuk
Graduate Theses, Dissertations, and Problem Reports
The OCULUS 1.0 Sensor Deployment concept design, was developed in 2004 at West Virginia University (WVU), outlined the general concept of a deployment system to be used on a C-130 aircraft. As a sequel, a new system, OCULUS 1.1, has been developed and designed. The new system transfers the concept system design to a safety of flight design, and also enhanced to a pre-production system to be used as the test bed to gain full military certification approval. The OCULUS 1.1 system has an implemented standard deployment system/procedure to go along with a design suited for military certification and implementation. …
Computational Analysis Of Pitch Stability For A Slotted Airfoil In Ground Effect, Meagan L. Hubbell
Computational Analysis Of Pitch Stability For A Slotted Airfoil In Ground Effect, Meagan L. Hubbell
Graduate Theses, Dissertations, and Problem Reports
Ground effect is a phenomenon which occurs when flow is displaced around a moving body in close proximity to the ground. This displacement is caused by compressed air that becomes trapped during motion between the body and the ground. The added upward thrust caused by ground effect can be used to generate and augment lift on a small aircraft. AirRay is a small single person, recreational downhill glider that operates within this ground effect. When launched from the top of a hill, it can glide to the base using ground effect for lift.;One of the amplified effects of operating close …
Effect Of Circulation Control Blowing Slots On Stall Angles Of A 10:1 Elliptical Airfoil, Jonathan Kweder
Effect Of Circulation Control Blowing Slots On Stall Angles Of A 10:1 Elliptical Airfoil, Jonathan Kweder
Graduate Theses, Dissertations, and Problem Reports
Circulation control is a high-lift methodology that can be used on the wing of an aircraft. This technology has been in the research and development phase for over sixty years primarily for fixed wing aircraft when the early models were referred to as "blown flaps." Circulation control works by increasing the near surface velocity of the airflow over the leading edge and/or trailing edge of a specially designed aircraft wing using a series of blowing slots that eject high velocity jets of air. The wing has a rounded trailing edge, and ejects the air tangentially, through these slots inducing the …
Parasitic Drag Analysis Of A High Inertia Flywheel Rotating In An Enclosure, Chad C. Panther
Parasitic Drag Analysis Of A High Inertia Flywheel Rotating In An Enclosure, Chad C. Panther
Graduate Theses, Dissertations, and Problem Reports
There are currently millions of people throughout the world who live in isolated, rural communities without electricity. An ongoing effort has been initiated to provide reliable power to such communities. These efforts are being made to utilize renewable energy sources such as wind and solar power to solve this problem. Renewable energy sources can be both intermittent and unpredictable. Thus, an effective energy storage system is sought to store excess energy when available to disperse during times of scarcity.;The use of a high-inertia flywheel was proposed as a means of energy storage due to its simplicity, low cost, and reliability. …
Aerodynamic Benefits Of Near-Surface-Actuated Circulation Control Blowing Slots For Rotorcraft Use, Gerald M. Angle Ii
Aerodynamic Benefits Of Near-Surface-Actuated Circulation Control Blowing Slots For Rotorcraft Use, Gerald M. Angle Ii
Graduate Theses, Dissertations, and Problem Reports
One of the most maintenance intensive components of all present-day helicopters is the swash-plate, and its associated control linkages. This mechanism is also the major contributing factor to fatal accidents associated with helicopter flight. However, the swash-plate is an essential component in providing controlled flight, by transmitting the pilot's control-inputs to the main rotor. Another side-effect of using the swash-plate is that it increases the diameter of the main rotor shaft assembly, slightly increasing the total drag of the aircraft. Thus, there are several benefits that could be achieved by removing the swash-plate of the helicopter.;To enable the removal of …
Application Of Machine Vision In Uavs For Autonomous Target Tracking, Joshua Patrick Effland
Application Of Machine Vision In Uavs For Autonomous Target Tracking, Joshua Patrick Effland
Graduate Theses, Dissertations, and Problem Reports
This research presents experimental results for the application of Machine Vision (MV) techniques to address the problem of target detection and tracking. The main objective is the design of a prototype "UAV" surveillance environment to emulate real-life conditions. The model environment for this experiment consists of a target simulated by a small electric train system, located at "ground" level, and a MV camera mounted on a motion-based apparatus located directly above the model setup. This system is meant to be a non-flying mockup of an aerial robot retrofitted with a MV sensor. Therefore, the final design is a two degree-of-freedom …
Feasibility And Optimum Design Study Of A Low Speed Wind Turbine Rotor System For Underground Communication Power, John E. Harman
Feasibility And Optimum Design Study Of A Low Speed Wind Turbine Rotor System For Underground Communication Power, John E. Harman
Graduate Theses, Dissertations, and Problem Reports
A need has been recognized to have battery charging capabilities in underground mines, independent of outside AC power sources. In the event of emergency, the radios located throughout underground mines stay charged for periods insufficient to ensure the safety of trapped mineworkers. Air is always being distributed to supply oxygen and to dilute explosive gases throughout all sections of the mine. An idea to charge the batteries using the energy stored in the moving air was recently proposed. The feasibility of using a small wind turbine to charge the batteries in this airlflow will be addressed by this thesis. If …