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 “"Hovering flight"”.
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Hummingbird Hovering Energetics and Flight Capacities Across Elevational Gradients
… be problematic for volant species, as sustaining flight in hypodense air is more energetically demanding relative to normodensity. Animals meet these challenges by increasing wingbeat kinematics and mechanical power output, necessitating increased metabolic input, while at the same time aerobic …
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Sizing Tool for Quadrotor Biplane Tailsitter UAS
… 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 aircraft to enable its further development, including: a QBT weight model, preliminary sizing framework, and vehicle …
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Optimization of the Aerodynamics of Small-scale Flapping Aircraft in Hover
<p>Flapping flight is one of the most widespread mean of transportation. It is a complex unsteady aerodynamic problem that has been studied extensively in the past century. Nevertheless, by its complex nature, flapping flight remains a challenging subject. With the development of micro air …
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Towards achieving power autonomy in soft-actuated micro aerial robots
Micro aerial robots with insect-like flight capabilities hold immense promise for various applications, including environmental monitoring, precision agriculture, and infrastructure inspection in confined spaces. However, realizing power autonomy in these miniature robotic platforms presents …
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Sensing Atmospheric Winds from Quadrotor Motion
… with experimental methods to exploit the flight envelope of multirotor UAS for wind sensing. The parameters of three quadrotor motion models, consisting of a kinematic particle, a dynamic particle, and a dynamic rigid body models are developed to measure wind velocity in hovering flight. …
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RoboFly: Towards Autonomous Flight of a Multimodal Insect-Scale Robot
… of these robots have successfully demonstrated hovering flight. However, there are some limitations to their abilities. Prior designs consist of many discrete parts that need to be manually assembled under a microscope. There are also limitations to their locomotion abilities. These robots could …
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Interfacial fluid dynamics inspired by natural systems
… the only animals that ingest fluids during non-hovering flight. This behavior has the advantage that bats can drink and maintain flight while hunting for food. We find that bats simply extend the tongue and drag it on the water surface while flying. The bats ingest water that coats the inside of …
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Unsteady Aerodynamic and Aeroelastic Analysis of Flapping Flight
… aerodynamic and aeroelastic analysis of flapping flight under various kinematics and flow parameters is presented in this dissertation. The main motivation for this study arises from the challenges facing the development of micro air vehicles. Micro air vehicles by requirement are compact with …