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Design And Flight Testing Actuator Failure Accommodation Controllers On Wvu Yf-22 Research Uavs, Yu Gu
Design And Flight Testing Actuator Failure Accommodation Controllers On Wvu Yf-22 Research Uavs, Yu Gu
Graduate Theses, Dissertations, and Problem Reports
This dissertation describes the design, development, and flight testing of a Neural Network (NN) based Fault Tolerant Flight Control System (FTFCS) with the ability to accommodate for actuator failures. The goal of this research was to demonstrate the ability of a specific set of control laws to maintain aircraft handling qualities in the presence of failures in the actuator channels. In this study, two-failure scenarios have been investigated: aileron failure (locking of the right aileron at a trim position) and elevator failure (locking of the right elevator at a trim position). A fleet of WVU YF-22 research aircraft test-beds were …
Finite Element Modeling Of Crack Detection In Aircraft Structures Using Electrical Current, Ramkumar Kumar Geetha
Finite Element Modeling Of Crack Detection In Aircraft Structures Using Electrical Current, Ramkumar Kumar Geetha
Graduate Theses, Dissertations, and Problem Reports
Various non-destructive test methods have been developed for the detection of cracks in metallic structures. Electromagnetic non-destructive testing (NDT) is one of the widely used non-destructive methods used for the detection and characterization of cracks. Utilizing the principle of electromagnetic induction, this technique is used in the areas of nuclear, aerospace, power, transport, petroleum and other industries to inspect defects in metallic sheets, plates and tubes that have good electrical conductivity.;Aircraft structures and wings are made of aluminum sheets riveted together. Cracks are often found emanating from the edge of the rivet holes which are covered by the rivets and …
Design Of A Standardized Sensor Platform For A C-130 Aircraft, Zenovy S. Wowczuk
Design Of A Standardized Sensor Platform For A C-130 Aircraft, Zenovy S. Wowczuk
Graduate Theses, Dissertations, and Problem Reports
The development of a standardized sensor pallet system for a C-130 aircraft was conceived by the National Guard to assist in counterdrug reconnaissance activities within the United States. Before development, the design parameters were established by the National Guard mission requirements and by the limitations of the C-130 aircraft. These limitations include using Commercial off the Shelf (COTS) and Government off the Shelf (GOTS) items when developing the system that must be universal on all C-130 aircraft variants B thru H. Further design criteria are delegated by the limitations of the C-130 aircraft. The following work describes the design process …
Dynamic Modal Analysis And Optimization Of C-130 Project Oculus' Mechanical Arm/Pod Sensor Deployment System Using The Finite Element Method, Adam C. Naternicola
Dynamic Modal Analysis And Optimization Of C-130 Project Oculus' Mechanical Arm/Pod Sensor Deployment System Using The Finite Element Method, Adam C. Naternicola
Graduate Theses, Dissertations, and Problem Reports
The Department of Defense (DoD) and the United States Army National Guard (USARNG) have sponsored West Virginia University's Center for Industrial Research Applications (CIRA) to design, fabricate, test and optimize an articulating, mechanical arm/pod system. The mechanical arm/pod system will be designed to accommodate a 500-pound sensor payload deployable in flight from a C-130 Hercules military aircraft used for counter narco-terrorism efforts. During the overall deployment (translation and rotation) of the mechanical arm/pod system and in the final resting position for optimal operating conditions for the data acquisition sensors (DAS), the mechanical structure will be subjected to a variety of …
Control System Design For A C-130 Ro-Ro Sensor Deployment Platform, Robert Paul Hayes
Control System Design For A C-130 Ro-Ro Sensor Deployment Platform, Robert Paul Hayes
Graduate Theses, Dissertations, and Problem Reports
A WVU team of engineers designed and built a palletized system that will be used to deploy surveillance sensors from a C-130 cargo airplane. There will be two pallets, one that will house the Operator Station and one that will carry a mechanical arm with a Sensor Pod, where the sensors will reside. This pallet will be placed on the C-130 rear door, which will be opened while in flight. The mechanical arm is designed to rotate the Sensor Pod underneath the door so the sensors can observe the ground.;Computer/Electrical engineers were asked to design the control circuit for the …
Decentralized Control For Uav Path Planning And Task Allocation, Matthew C. Lechliter
Decentralized Control For Uav Path Planning And Task Allocation, Matthew C. Lechliter
Graduate Theses, Dissertations, and Problem Reports
The effort of this research is to move toward enabling Unmanned Air Vehicles to fly in autonomous formations with intelligent mission planning capabilities. In particular, UAVs will be able to autonomously perform path planning and task allocation. During missions, the UAVs must be able to avoid threats and no-fly zones while still reaching their target optimally in time.;A path planning and task allocation approach was first developed that treats the problem as a Multi-dimensional, Multiple-Choice Knapsack Problem. Paths are selected and task assigned while minimizing the UAV team's overall mission cost. Next, a SIMULINK-based centralized simulation environment was created. This …
Comparison Of Path-Planning And Search Methods For Cooperating Unmanned Aerial Vehicles, Zachary Wilson Spritzer
Comparison Of Path-Planning And Search Methods For Cooperating Unmanned Aerial Vehicles, Zachary Wilson Spritzer
Graduate Theses, Dissertations, and Problem Reports
The main goal of this research effort is develop a simulation environment for cooperating UAVs within MATLAB's SIMULINK. This is the first step in a process that will eventually lead to the implementation of model UAVs on a model battlefield. The interest in cooperation of UAVs over the past decade has grown significantly. This is due to several reasons including lower operational cost, lower risk for humans, and greater maneuverability.;This research explores two scenarios. The first is a scenario in which all of the characteristics of a battlefield are known prior to the UAVs being launched. Three prevalent path-planning methods …
Doppler Global Velocimetry Measurements In A Wing Flow Field With Tip Blowing, Andrew Douglas Starn
Doppler Global Velocimetry Measurements In A Wing Flow Field With Tip Blowing, Andrew Douglas Starn
Graduate Theses, Dissertations, and Problem Reports
A two-component Doppler global velocimetry (DGV) system has been developed, improved, and tested. DGV is a non-intrusive optical velocity measurement technique. DGV measures the Doppler shift of the frequency of the light scattered by seed particles at a specific location. The velocity of the particles is related to the Doppler shift.;DGV measurements were made in the WVU low speed wind tunnel on a turbulent jet and on a NACA 2412 airfoil model with and without tip blowing.;The jet data generally agreed well with previous measurements. The jet velocity error was generally within +/-2--4 m/s. The offset error of up to …
Sensitivity Analysis Of The C-130 Sensor Deployment System Arm Using Finite Element Methods, Lawrence Anthony Feragotti
Sensitivity Analysis Of The C-130 Sensor Deployment System Arm Using Finite Element Methods, Lawrence Anthony Feragotti
Graduate Theses, Dissertations, and Problem Reports
The Finite Element Method may be the most powerful tool in the engineer's toolbox today, and can be used in many different applications. The purpose of this thesis is to utilize this tool to optimize the current design of the roll-on roll-off sensor deployment system support arm for the C-130 Hercules. The Department of Defense (DOD) and the National Guard (NG) will be using these sensor pallet systems in a variety of command and control configurations for counter narco-terrorism applications. The original design for the sensor deployment arm will be drawn using CAD, and then a Finite Element Analysis will …
Comparison Of Partially Decoupled And Combined Methods Of Path Planning And Task Allocation, Jennifer Beth Hazelton
Comparison Of Partially Decoupled And Combined Methods Of Path Planning And Task Allocation, Jennifer Beth Hazelton
Graduate Theses, Dissertations, and Problem Reports
Developing autonomous unmanned aerial vehicles (UAVs) reduces the risks to which soldiers are subjected by enabling the UAVs to make efficient decisions, regardless of the situation. This requires each group of UAVs to be proficient in planning their own paths and assigning tasks in a way that minimizes the total cost of the mission. Two methods are presented for doing this, the partially decoupled approach and the combined approach. After comparing two methods, the partially decoupled approach costs an average of 3.0 meters less than the combined approach, while taking an average of 0.327 seconds longer to complete. This indicates …