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 20 of 65 for “"Soaring"”.
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Design and Flight-Path Simulation of a Dynamic-Soaring UAV
<p>We address the development of a dynamic-soaring capable unmanned aerial vehicle (UAV) optimized for long-duration flight with no on-board power consumption. The UAV’s aerodynamic properties are captured with the integration of variable fidelity aerodynamic analyses. In addition to this, a 6 …
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Modeling and Simulation of Autonomous Thermal Soaring with Horizon Simulation Framework
… flown UAVs autonomously with thermal soaring method. Most research involved some form of flight simulation. Improvements to the aircraft and thermal models for simulation purpose would enable researchers to better design their UAVs and explore any potential flaws in their designs. An …
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An efficient way for path planning of cooperative autonomously soaring gliders
Made available in DSpace on 2015-07-22T22:18:09Z (GMT). No. of bitstreams: 2 ZAMAN-THESIS-2015.pdf: 2013042 bytes, checksum: 31e119555d43a7cb77c3a0b2dd9b0a5a (MD5) LICENSE.txt: 4211 bytes, checksum: 29d447deaca356bfb55a4cfd8c8912cf (MD5) Previous issue date: 2015-05-01
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Development and Deployment of a Dynamic Soaring Capable UAV using Reinforcement Learning
<p>Dynamic soaring (DS) is a bio-inspired flight maneuver in which energy can be gained by flying through regions of vertical wind gradient such as the wind shear layer. With reinforcement learning (RL), a fixed wing unmanned aerial vehicle (UAV) can be trained to perform DS maneuvers optimally for …
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Dynamic soaring beyond biomimetics: control of an albatross-inspired wind-powered system
… horizontal winds in a maneuver called dynamic soaring, and travel impressive distance (5000 km/week) by "riding the winds". Accordingly, for albatrosses flight is barely more strenuous than rest. While thermal soaring, exploited by birds of prey and sports gliders, consists of simply remaining …
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A current assessment of the Hamburg rules
… of international economies integration, is also soaring: last year, estimated the United Nations Conference on Trade and Development, cross border investment increased by 40%, to $315 billion.
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Wind and Wake Sensing with UAV Formation Flight: System Development and Flight Testing
… and longer duration flights through dynamic soaring or thermal soaring.;Wakes are an effect of the lift distribution across an aircraft's wing or tail. Wakes can cause substantial disturbances when multiple aircraft are moving through the same airspace. In fact, the perils from an aircraft …
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SOARNET, Deep Learning Thermal Detection for Free Flight
… flight using natural sources of lift is called soaring. Once a thermal is encountered, the pilot flies in circles to keep within the thermal, so gaining altitude before flying off to the next thermal and towards the destination. A single thermal can net a pilot thousands of feet of elevation …
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An aircraft and provide information about flight performance and local microclimate
… were made during this period. Both thermal soaring and ridge soaring were performed to test the system under varying weather conditions. A telemetry link was developed to transfer data in realtime from the aircraft to a custom ground station. The recorded results were post-processed using …
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Remotely sensing motion: the use of multiple biologging technologies to detect fine-scale, at-sea behaviour of breeding seabirds in a variable Southern Ocean environment
… roll angles of albatrosses during dynamic soaring flight. Animal body angles are normally extracted by using tri-axial accelerometer data, but their dynamic soaring flight mode inhibits the use of these methods. I show how magnetometer data are independent of dynamic movement and can be …
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Unleashing the potential of ULPING: synthesis and property tuning of opto-electronic materials
… demand for improved materials and properties is soaring. Research efforts persistently target augmenting these materials' attributes. Leveraging nanotechnology, with its amplified active surface area through scaling down, offers a pathway to enhance material properties. This study introduces a …
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Fusion of sensor information to measure the total energy of an aircraft and provide information about flight performance and local microclimate
… were made during this period. Both thermal soaring and ridge soaring were performed to test the system under varying weather conditions. A telemetry link was developed to transfer data in realtime from the aircraft to a custom ground station. The recorded results were post-processed using …
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BALANCING COST, HEALTHCARE QUALITY, AND ADVANCED MEDICAL TECHNOLOGY IN PREGNANCY, LABOR AND DELIVERY
… advances in medicine have contributed to soaring costs within the field of obstetrics and prenatal care. These rising costs of American births have led to patient concerns over costs of pregnancy, including prenatal care, labor and delivery. As a society, we have to determine what can be …
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Chinese undergraduate students' experience studying in the U.S.
… studying in the United States. With the recent soaring number of Chinese undergraduate students at U.S. campuses as well as a lack of previous research on this population, it is important to understand this group of students and their experiences of studying in the U.S. at the current time …
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Using movement modelling to improve the design and analysis of vantage point surveys in bird and wind energy studies
… on birds and bats associated with wind energy. Soaring birds are particularly vulnerable due to their collision prone behaviours, low manoeuvrability, and their slow population recovery rates. The focus of this thesis is on the identification of areas that are intensively used by soaring birds …
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Funding the centrally managed work of Britain Yearly Meeting of the Religious Society of Friends
… between caution and ‘living adventurously’. Soaring expenditure, unmatched by similar increase in contribution income, forced a move to budgetary planning, based on a balanced budget and maintenance of a prudent level of reserves. Finally, this dissertation examines the importance that …
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Probabilistic assessment of the impact of plug-in electric vehicles on power quality in electric vehicles on power quality in electric distribution systems.
… such as reducing greenhouse gases, lowering the soaring gas prices, and ending the reliance on imported oil. The integration of plug-in electric vehicles into the electric distribution system may pose potential power quality problems due to the uncertainties in the number of these vehicles, their …
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The Songs of Lori Laitman: An Analysis of Sunflowers and Early Snow
… of many. Known for her lyric writing - her soaring phrases and brilliant climaxes – Laitman’s music is both rewarding, and at times, deceptively difficult. Her music has been recorded and performed by numerous professional artists, and has finally landed the composer an entry in the eminent …
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Mathematical Models For Swing Options And Subprime Mortgage Derivatives.
… deregulation of the energy market and the recent soaring (and possible bubble) of commodity prices motivates the first part of the thesis. We analyze a certain kind of contract in the commodity market known as swing or take-or-pay options. These contracts are American type options where the holder …
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A light in the dark : labor reform in Guatemala during the FRG administration, 2000-2004
… corruption, poor national economic performance, soaring crime rates and eroding approval ratings. Surprisingly, while in power the FRG enacted and implemented the two far-reaching labor reforms that are the subject of this thesis. The first was a legal reform to the Labor Code and the second was …
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