Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 127 for “"fixed-wing"”.
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Powerline perching with a fixed-wing UAV
… power for long missions. Recent advances in fixed-wing perching have made it possible to consider a new solution to this problem - landing on a powerline to recharge. Furthermore, because a current carrying conductor generates a magnetic field, a unique opportunity exists to use the powerline …
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M28 Fixed wing transport aircraft cost reduction
The M28 is a Polish short-takeoff-and-landing (STOL) light cargo aircraft developed in 1984 and currently built by PZL Mielec, a subsidiary of United Technology Corporation (UTC). There has been renewed interest in the product from military and commercial markets due to its impressive STOL …
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Towards Practical Fixed-Wing Aircraft with Electroaerodynamic Propulsion
… Previous research has shown that EAD for fixed-wing, heavier-than-air aircraft propulsion is feasible. The goal of this thesis is to determine whether a fixed-wing EAD aircraft can be practical; i.e., with sufficient payload, range/endurance, and flight performance to be of interest in …
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Electro-aerodynamic thrust for fixed-wing aircraft propulsion
… EAD propulsion has yet to be implemented in fixed-wing aircraft, in part due to the limited understanding of EAD thruster performance. The objective of this thesis is to determine the feasibility and viability of EAD propulsion in fixed-wing aircraft applications. This thesis begins with a …
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Geofencing trajectory estimation for small-scale fixed-wing UAVs
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Robust post-stall perching with a fixed-wing UAV
… for achieving robust, post-stall perching with a fixed-wing Unmanned Aerial Vehicle (UAV). Using sum-of-squares (SOS) programming and building on a novel control synthesis approach known as LQR-Trees, I demonstrate the ability to improve the robustness of the post-stall perching manuever to …
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Agile flight control techniques for a fixed-wing aircraft
… surveillance or fly-by reconnaissance. Fixed-wing vehicles with a high thrust-to-weight ratio are capable of performing maneuvers such as take-off or perch style landing and switch between hover and conventional flight modes. Agile flight controllers enable a single vehicle to achieve …
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Towards Detecting Atmospheric Coherent Structures using Small Fixed-Wing Unmanned Aircraft
… methods are developed for utilizing small fixed-wing unmanned aircraft systems (UAS) in detecting these atmospheric coherent structures. The dissertation begins by presenting relevant literature on both LCS and airborne wind estimation. Because model-based wind estimation inherently depends …
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Modeling and Control of an Active Dihedral Fixed-Wing Unmanned Aircraft
… that increases the load factor. The aircraft's fixed dihedral angle, providing passive roll-stiffness, is often selected based on lateral-directional stability requirements for the vehicle. A study to predict the effect of an active dihedral system on lateral-directional stability and vertical …
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On the Security and Reliability of Fixed-Wing Unmanned Aircraft Systems
… ones to improve the security and reliability of fixed-wing unmanned aircraft systems (UAS). Specifically, we focus on three strands of work: i) designing UAS controllers with performance guarantees using the robust control framework, ii) developing tools for detection and mitigation of …
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Vision-Based Self-Motion Estimation in a Fixed-Wing Aerial Vehicle
… a complete algorithm to estimate the motion of a fixed-wing aircraft given a series of digitized flight images. The algorithm was designed for fixed-wing aircraft because carefully procured flight images and corresponding navigation data were available to us for testing. After image …
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Adaptive Control Techniques for Transition-to-Hover Flight of Fixed-Wing UAVs
<p>Fixed-wing unmanned aerial vehicles (UAVs) with the ability to hover combine the speed and endurance of traditional fixed-wing fight with the stable hovering and vertical takeoff and landing (VTOL) capabilities of helicopters and quadrotors. This combination of abilities can provide strategic …
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Vision-based Target Localization from a Small, Fixed-wing Unmanned Air Vehicle
… a ground-based object when imaged from a fixed-wing UAV. Using the target's pixel location in an image, with measurements of UAV position, attitude and camera pose angles, the target is localized in world coordinates. This thesis also presents a study of possible error sources and …
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Fixed-wing Classification through Visually Perceived Motion Extraction with Time Frequency Analysis
The influx of unmanned aerial systems over the last decade has increased need for airspace awareness. Monitoring solutions such as drone detection, tracking, and classification become increasingly important to maintain compliance for regulatory and security purposes, as well as for recognizing …
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The development of a fixed wing aircraft analysis and design flight dynamic software
… analysis and controlling the behavior of a fixed-wing aircraft. For a given aircraft geometry, mass and inertia properties, and flight conditions, the software was designed in such a way to start the estimation of aerodynamic characteristics, trimmed flight, stability analysis through …
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Multidisciplinary Design Optimization of Subsonic Fixed-Wing Unmanned Aerial Vehicles Projected Through 2025
… research fills the gap in integrated subsonic fixed-wing UAV AV MDO methods. No known single methodology captures all of the phenomena of interest over the wide range of UAV families considered here. Key advancements include: 1) parametric Low Reynolds Number (LRN) airfoil aerodynamics …
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Neural network based adaptive control for autonomous flight of fixed wing unmanned aerial vehicles
… vehicles (UAVs) to achieve autonomous fight. Fixed wing hobby model planes are modified and instrumented to form experimental platforms. Different sensors employed to collect the flight data are discussed along with their calibrations. The time constant and delay for the servo-actuators for …
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Autonomous Flight Arcade: Reinforcement Learning for End-to-End Control of Fixed-Wing Aircraft
… of robust environments for end-to-end control of fixed-wing aircraft and quadcopter drones. These environments are playable by both humans and artificial agents, making them useful for varied tasks including reinforcement learning, imitation learning, and human experiments. Additionally, we show …
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System Identification of a Nonlinear Flight Dynamics Model for a Small, Fixed-Wing UAV
… a nonlinear flight dynamics model for a small, fixed-wing unmanned aerial vehicle (UAV). Models developed for UAVs can be used for many applications including risk analysis, controls system design and flight simulators. Several challenges exist for system identification of small, low-cost …
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Linear Parameter Varying Path Following Control of a Small Fixed Wing Unmanned Aerial Vehicle
A mathematical model of a small fixed-wing aircraft was developed through application of parameter estimation techniques to simulated flight test data. Multiple controllers were devised based on this model for path following, including a self-scheduled linear parameter-varying (LPV) controller with …
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