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.
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Showing 1 to 9 of 9 for “"Tailsitter"”.
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Sizing Tool for Quadrotor Biplane Tailsitter UAS
The Quadrotor-Biplane-Tailsitter (QBT) configuration is the basis for a mechanically simplistic rotorcraft capable of both long-range, high-speed cruise as well as hovering flight. This work presents the development and validation of a set of preliminary design tools built specifically for this …
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Robust Optimal Control of a Tailsitter UAV
… minimal space to takeoff, hover, and land. The tailsitter is a type of VTOL airframe that combines the benefits of VTOL capability with the ability to achieve efficient horizontal flight. One type of tailsitter, the Quadrotor Biplane (QRBP), can transition the vehicle from hover as a quadrotor …
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Adaptive Quaternion Control for a Miniature Tailsitter UAV
The miniature tailsitter is a unique aircraft with inherent advantages over typical unmanned aerial vehicles. With the capabilities of both hover and level flight, these small, portable systems can produce efficient maneuvers for enhanced surveillance and autonomy with little threat to surroundings …
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Transitions Between Hover and Level Flight for a Tailsitter UAV
… confined areas. One type of VTOL airframe, the tailsitter, has all of these advantages, as well as being able to fly in the more energy-efficient level flight mode. The tailsitter can track trajectories that successfully transition between hover and level flight modes. Three methods for …
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Adaptive Control of the Transition from Vertical to Horizontal Flight Regime of a Quad-Tailsitter UAV
Tailsitter UAVs (Unmanned Aerial Vehicles) are a type of VTOL (Vertical Take off and Landing) aircraft that combines the agility of a quadrotor drone with the endurance and speed of a fixed-wing aircraft. For this reason, they have become popular in a wide range of applications from tactical …
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Modeling and adaptive control of indoor unmanned aerial vehicles
… UAVs, including a custom-built three-wing tailsitter, are combined with a motion capture system and ground computer network to form a testbed capable of indoor autonomous flight. An L1 adaptive output feedback control design process is presented in which control parameters are …
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Algorithms for Generation and Tracking of Fast and Agile Flight Trajectories
… (6DOF) flight dynamics model for a tailsitter flying wing transitioning aircraft. We leverage the flat transform to design an INDI flight control algorithm capable of tracking agile aerobatics maneuvers that exploit the entire flight envelope, including post-stall and sideways …
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Guidance and Control System for VTOL UAVs operating in Contested Environments
… and lateral controllers a Quad-Rotor Tailsitter(QRBP) style UAV. In order to successfully implement the proposed controller on the QRBP, significant effort was placed upon physical design and testing apparatus.
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Guidance and Control of Autonomous Unmanned Aerial Systems for Maritime Operations
… adaptive control (MRAC) based systems for tailsitter UAS, and guidance and control of multi-rotor UAS for tactical maneuvering and coverage. Applications, both current and potential, are investigated and gaps in existing technologies are identified. To address the controls problem of a …