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Dissertations / Theses on the topic 'Solar UAVs'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Chin, Chee Keen. "Extending the endurance, missions and capabilities of most UAVS using advanced flexible/ridged solar cells and new high power density batteries technology." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5824.

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Approved for public release; distribution is unlimited.<br>The extension of flight time for military miniature unmanned aerial vehicles (UAVs) has been demonstrated through the implementation of thin-film photovoltaic (TFPV) cells. Currently, most electric mini-UAVs are powered by high energy density lithium-ion or lithium polymer batteries; however, the flight endurance is usually limited between 60 to 90 minutes before requiring a forced recovery to replace exhausted batteries. In this thesis, the viability of extending flight endurance by complementing the on-board battery source of a

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2

Belfield, Eric. "Assessment of Asymmetric Flight on Solar UAS." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1676.

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An investigation was conducted into the feasibility of using an unconventional flight technique, asymmetric flight, to improve overall efficiency of solar aircraft. In this study, asymmetric flight is defined as steady level flight in a non-wings-level state in- tended to improve solar incidence angle. By manipulating aircraft orientation through roll angle, solar energy collection is improved but aerodynamic efficiency is worsened due to the introduction of additional trim drag. A point performance model was devel- oped to investigate the trade-off between improvement in solar energy collecti

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3

Johansson, Magnus. "Project Solaris – Construction of Solar Powered UAV Prototype." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-14012.

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Abstract To control an un-swept flying wing is problematic in some ways. One of the problems is that when the wing experiences a disturbance in yaw, it does not, since it has no tail, generate any torque in the opposite direction as a plane with a vertical stabilizer does. This thesis is foremost aimed at exploring one particular solution to this problem. One approach to this problem is to place the motors out on the wing and differentiate the thrust, to achieve the same torque as splitted elevons or a vertical stabilizer does. This is what NASA used on the flying unmanned wing HELIOS. Reducin

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Serrão, Ana Carolina. "Aplicação da radiação solar na aviação." Master's thesis, Universidade de Évora, 2010. http://hdl.handle.net/10174/22073.

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Esta dissertação consiste na apresentação do trabalho realizado sobre aplicação da energia solar na aviação, no âmbito da tese de Mestrado em Engenharia da Energia Solar. Começou-se por estudar quais as tecnologias fotovoltaicas existentes atualmente, bem como os sistemas de armazenamento de energia e perspetivas futuras. Realizou-se um ensaio de voo apenas com o UAV para a recolha de alguns dados e para realização de alguns cálculos hipotéticos. Posteriormente foram realizados vários testes com as células fotovoltaicas, o UAV e o MPPT, para obtenção de dados. Com todos estes testes e cálculos

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Sultan, Sultan. "Solaris Project : The Design of a Solar Powered UAV." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-13323.

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Project Solaris is a unique student project that is carried out at Mälardalen University, Sweden. The project involves all the phases of the development and construction of a solar-powered UAV (unmanned aerial vehicle), where every subproject involves a specific assignment in the development-process. The primary task of this project is the investigation of the energy balance for the entire aircraft. In other words, calculating the power that is generated through the solar panels, and the required power to fly the aircraft and operate all the electronic systems. The total thrust from the motors

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6

Bughman, Luke J. "Modeling and Testing Powerplant Subsystems of a Solar UAS." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2082.

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In order to accurately conduct the preliminary and detailed design of solar powered Unmanned Aerial Systems (UAS), it is necessary to have a thorough understanding of the systems involved. In particular, it is desirable to have mathematical models and analysis tools describing the energy income and expenditure of the vehicle. Solar energy income models may include available solar irradiance, photovoltaic array power output, and maximum power point tracker efficiency. Energy expenditure models include battery charging and discharging characteristics, propulsion system efficiency, and aerodynami

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7

Hood, L. L., and B. E. Soukharev. "Solar induced variations of odd nitrogen: Multiple regression analysis of UARS HALOE data." AMER GEOPHYSICAL UNION, 2006. http://hdl.handle.net/10150/623348.

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A linear multiple regression statistical model is applied to estimate the solar induced component of odd nitrogen variability in the stratosphere and lower mesosphere using UARS HALOE data for 1991–2003. Consistent with earlier studies, evidence is obtained for a decadal NOx variation at the highest available latitudes (50° – 70°) that projects positively onto the solar cycle. This variation, which is most statistically significant in the Southern Hemisphere, also correlates positively with the auroral Ap index. It is therefore probably caused by downward transport during the polar night of th

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8

Hoffborn, Martin. "A historical survey of solar powered airplanes and evaluation of it’s potential market." Thesis, Mälardalen University, School of Innovation, Design and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-7644.

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<p>Project Solaris is a student research project with the goal to build a solar powered Unmanned Aerial Vehicle. This study is one in a set of studies that make up the initial phase of project Solaris. The main objective of this report is to investigate earlier solar powered airplanes as well as evaluate (or explore) potential future niche markets where solar powered UAVs could excel.A presentation of earlier solar powered airplanes will give an overall understanding of how solar powered airplanes have evolved and also provide information about the goals and ambitions behind the projects.Poten

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9

Tsagarakis, Mikis. "Project Solaris - Analysis of airfoil for solar powered flying wing UAV." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-13168.

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This study is part of the second phase of the Solaris project, where the aim is to develop a solar powered Unmanned Aerial Vehicle (UAV). The second phase involves the design and optimization of the aircraft. One of the important focuses in this phase is the determination of the airfoils shape. This report sole objective is to determine which airfoil that is best suited for the aircraft, as well as presenting the airfoils characteristic properties, in comparison to other similarly airfoils.This analysis has been carried out using XFOIL, an airfoil analysis tool developed by the MIT professor M

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10

Nordén, Erik, and Jonas Malmquist. "Project Solaris : Evaluation of EASA-regulations applied to a solar powered UAS." Thesis, Mälardalen University, School of Innovation, Design and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-6335.

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<p> </p><p>Den här rapporten är en del av första fasen i Solaris projektet där en solcellsdriven UAS skall utvecklas. Den här delen av projektet berör hur lagar och bestämmelser samt den fortsatta luftvärdigheten för UAS:er ser ut internationellt samt nationellt. Rapporten är till största del anpassad och riktad till Solarisverksamheten men kan även användas för annan UAS-verksamhet.</p><p>I Europa är det EASA som reglerar all UAS -verksamhet med flygfarkoster med en vikt över 150 kg. Reglerna för verksamhet med UAS:er under 150 kg har EASA lagt på nationell nivå där Transportstyrelsens luftf

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Laukkanen, Mikko. "Project Solaris - Mass and balance analysis tool for a solar powered UAV." Thesis, Mälardalen University, School of Innovation, Design and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-7449.

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12

Burton, Michael S. M. (Michael J. ). Massachusetts Institute of Technology. "Solar-electric and gas powered, long-endurance UAV sizing via geometric programming." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112414.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 83-85).<br>Fueled by telecommunication needs and opportunities, there has been a recent push to develop aircraft that can provide long-endurance (days to weeks) persistent aerial coverage. These aircraft present a complicated systems engineering problem because of the multifaceted interaction between aerodynamics, structures, environmental effects, and engine, battery, and other component performance. Using

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13

Vilchis, Medina José Luis. "Modeling of resilient systems in non-monotonic logic : application to solar power UAV." Electronic Thesis or Diss., Aix-Marseille, 2018. http://theses.univ-amu.fr.lama.univ-amu.fr/181212_VILCHISMEDINA_706br796xrxee121bcfd495dmdd_TH.pdf.

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Cette thèse présente un modèle résilient pour piloter un avion basé sur une logique non monotone. Ce modèle est capable de gérer des solutions à partir d’informations incomplètes, contradictoires et des exceptions. C’est un problème très connu en Intelligence Artificial, qui est étudié depuis plus de 40 ans. Pour ce faire, nous utilisons la logique des défauts pour formaliser la situation et trouver des conclusions possibles. Grâce à cette logique, nous pouvons transformer les règles de pilotage en défauts. Ensuite, lorsque nous calculons les solutions, plusieurs options peuv

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Vilchis, Medina José Luis. "Modeling of resilient systems in non-monotonic logic : application to solar power UAV." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0567/document.

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Cette thèse présente un modèle résilient pour piloter un avion basé sur une logique non monotone. Ce modèle est capable de gérer des solutions à partir d’informations incomplètes, contradictoires et des exceptions. C’est un problème très connu en Intelligence Artificial, qui est étudié depuis plus de 40 ans. Pour ce faire, nous utilisons la logique des défauts pour formaliser la situation et trouver des conclusions possibles. Grâce à cette logique, nous pouvons transformer les règles de pilotage en défauts. Ensuite, lorsque nous calculons les solutions, plusieurs options peuv

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15

Hood, L. L., and S. Zhou. "Stratospheric effects of 27-day solar ultraviolet variations: An analysis of UARS MLS ozone and temperature data." AMER GEOPHYSICAL UNION, 1998. http://hdl.handle.net/10150/624009.

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The characteristics of upper stratospheric ozone and temperature responses at low latitudes to short-term solar ultraviolet variations are studied by using 1000 days of UARS microwave limb sounder (MLS) and solar stellar irradiance comparison experiment data. Consistent with previous analyses of Nimbus 7 solar backscattered ultraviolet (SBUV) data, the high-pass-filtered solar flux in the 200-to 205-nm interval is most strongly correlated with MLS ozone measurements at tropical latitudes near 4 hPa with a sensitivity of about 0.4% for each 1% change in the solar flux. Reproducibility tests, po

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Tegeder, Troy Dixon. "Development of an Efficient Solar Powered Unmanned Aerial Vehicle with an Onboard Solar Tracker." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/856.

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Methods were developed for the design of a solar powered UAV capable of tracking the sun to achieve maximum solar energy capture. A single-axis solar tracking system was designed and constructed. This system autonomously rotated an onboard solar panel to find the angle of maximum solar irradiance while the UAV was airborne. A microcontroller was programmed and implemented to control the solar tracking system. A solar panel and an efficient airframe capable of housing the solar tracking system was designed and constructed. Each of these subsystems was tested individually with either ground or f

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De, Simone Leopoldo. "Ecological aspects of plants inhabiting Mediterranean cliffs. Challenges and prospects of life in vertical environments." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/159877.

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[ES] Esta tesis investiga las oportunidades, desafíos y limitaciones para la investigación en el campo de la ecología vegetal, en el contexto de los acantilados mediterráneos. En concreto, las especies casmofiticas, cuyos hábitats naturales se caracterizan por su acusada pendiente. Las laderas de las montañas de piedra caliza en la proximidad del mar, en la parte central y occidental del área mediterránea se consideran objetos de estudio. Los estudios se llevaron a cabo en los cinturones costeros de montaña de las costas del noroeste de Sicilia y la costa diánica en la Comunidad Valenciana. E

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Young, Stephen Alexander. "Multi-level Control Architecture and Energy Efficient Docking for Cooperative Unmanned Air Vehicles." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/31192.

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In recent years, significant progress has been made in improving the performance of unmanned air vehicles in terms of aerodynamic performance, endurance, autonomy, and the capability of on-board sensor packages. UAVs are now a vital part of both military actions and scientific research efforts. One of the newest classes of UAV is the high altitude long endurance or HALE UAV. This thesis considers the high-level control problem for a unique HALE mission involving cooperative solar powered UAVs. Specifically addressed is energy efficient path planning for vehicles that physically link together

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Morrisey, Bryan J. "Multidisciplinary Design Optimization of an Extreme Aspect Ratio HALE UAV." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/113.

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ABSTRACT Multidisciplinary Design Optimization of an Extreme Aspect Ratio HALE UAV Bryan J. Morrisey Development of High Altitude Long Endurance (HALE) aircraft systems is part of a vision for a low cost communications/surveillance capability. Applications of a multi payload aircraft operating for extended periods at stratospheric altitudes span military and civil genres and support battlefield operations, communications, atmospheric or agricultural monitoring, surveillance, and other disciplines that may currently require satellite-based infrastructure. Presently, several development efforts

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Malaver, Rojas Jairo Alexander. "Development of gas sensing technology for ground and airborne applications powered by solar energy : methodology and experimental results." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/74644/1/74644.pdf.

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Monitoring gases for environmental, industrial and agricultural fields is a demanding task that requires long periods of observation, large quantity of sensors, data management, high temporal and spatial resolution, long term stability, recalibration procedures, computational resources, and energy availability. Wireless Sensor Networks (WSNs) and Unmanned Aerial Vehicles (UAVs) are currently representing the best alternative to monitor large, remote, and difficult access areas, as these technologies have the possibility of carrying specialised gas sensing systems, and offer the possibility

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Abranches, Gonçalo Botelho de Sousa. "Determinação da qualidade geométrica de superfície refletoras com recurso à fotogrametria." Master's thesis, Universidade de Évora, 2018. http://hdl.handle.net/10174/23893.

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Neste trabalho é utilizada a Fotogrametria como ferramenta para avaliação geométrica de concentradores solares térmicos. Coletores do tipo cpc – coletores parabólicos compostos são submetidos a diversas experiências fotogramétricas e avaliados quanto à sua forma. Outros objetos com superfícies refletoras e não refletoras como concentradores solares ptc – parabolic through concentrator e fornos solares também são alvo de experiências fotogramétricas com o objetivo de estudar os efeitos de diferentes tipos de superfícies na fotogrametria. É também comparado o modelo 3D do concentrador ideal com

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Kadidlo, Miroslav. "Návrh lehkého průzkumného letounu bez lidské posádky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228534.

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The Thesis solves design of light unmanned reconnaissance aircraft carrying 3 kg payload. Based on statistical research chooses the field of long endurance flights, trying to manage problem via solar powered batteries. Difficulities and advantages of this issue are researched and optimal aircraft setup is discussed.

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Bronz, Murat. "Conception mini-drone longue endurance." Phd thesis, Toulouse, ISAE, 2012. http://tel.archives-ouvertes.fr/tel-00993465.

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L'objet de cette thèse est de démonter la faisabilité de conception d'un mini-drone longue endurance sans recourir à des véhicules de grande envergure qui nécessite des infrastructures supplémentaires, des systèmes de lancement complexes et un personnel d'exploitation important. Pour ce faire, une approche d'optimisation globale du problème a été utilisée, en s'appuyant sur les spécificités de chacun des aspects de la conception de mini-drones. Ce concept de mini-drone longue endurance doit repousser les limites dans plusieurs disciplines telles que l'aérodynamique, la propulsion, les structur

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Sobers, David Michael Jr. "Efficient ranging-sensor navigation methods for indoor aircraft." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34824.

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Unmanned Aerial Vehicles are often used for reconnaissance, search and rescue, damage assessment, exploration, and other tasks that are dangerous or prohibitively difficult for humans to perform. Often, these tasks include traversing indoor environments where radio links are unreliable, hindering the use of remote pilot links or ground-based control, and effectively eliminating Global Positioning System (GPS) signals as a potential localization method. As a result, any vehicle capable of indoor flight must be able to stabilize itself and perform all guidance, navigation, and control tasks with

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DE, SIMONE LEOPOLDO. "Ecological aspects of plants inhabiting Mediterranean cliffs. Challenges and prospects of life in vertical environments." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/443140.

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This thesis investigates opportunities, challenges and limitations for plant ecological research in the context of Mediterranean cliffs. In particular, chasmophytic species, whose natural habitats are very steep, limestone mountain slopes in the proximity of the sea, in the Central and Western part of the Mediterranean area are considered as study objects. Studies were carried out in the coastal mountain belts of both North-western Sicily and Dianic coasts in the Valencian Community (Spain). The first chapter, entitled “The complexity of environmental factors: cliff microclimate”, investigate

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Nunes, Pedro Rodrigues. "Mission Planning Application Software for Solar Powered UAVs." Master's thesis, 2020. http://hdl.handle.net/10400.6/10391.

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The growing demand for unmanned aerial vehicles (UAV) for dedicated civilian use over the last decade has attracted the attention of investigators and engineers all over the world. It is important to note that the non-necessity of manual piloting is ideally suited to the operation of dirty, dangerous, dull (long autonomy) or large scale missions (use of swarms of UAVs) [1], however it demands a greater level of attention to the development of technologies that allow and ease the planning, operation and management of such vehicles. A lot of improvement has been made in the development of solar-

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Sheu, Lih-Gen, and 許立根. "The Feasibility Study on The Development of Solar-Powered Long Endurance UAVs for Taiwan." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/y5hwd7.

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碩士<br>淡江大學<br>航空太空工程學系碩士在職專班<br>106<br>A high-altitude long-endurance solar-powered UAVs has been identified to be an atmospheric satellite by the international aviation industry. Applying as a high-altitude long-endurance aerial vehicle, the solar-powered UAVs must compete with the balloons and the airships. In this thesis, we discuss the industry feasibility of developing a solar-powered UAV as a stratosphere long-endurance aerial vehicle. The fact that the propeller aircrafts are not suitable for the flight in the stratosphere should be considered, while the balloons and airships can natura

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LOUIS, ANJANA TREESA, and 陸安潔. "Design Manufacturing and Testing of Solar UAV." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/ts35z8.

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碩士<br>國立虎尾科技大學<br>飛機工程系航空與電子科技碩士班<br>107<br>This thesis deals with unmanned aerial vehicle using solar energy as the only source of energy for more than 24 hour’s flight. Using solar panels, collect the solar energy during the day for immediate use and also store the remaining part of energy for the night flight. The concept is quite simple; vehicle equipped with solar cells will be covering under its wing. With the help of computer program, the design has been developed. A complete team was formed to design, build, test and fly a Solar Powered Unmanned Aerial Vehicle. The applications of UAV

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Cândido, Luís Filipe Vicente. "Projeto de um UAV Solar de Grande Autonomia." Master's thesis, 2014. http://hdl.handle.net/10400.6/5011.

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O presente documento expõe o projeto conceptual, preliminar e ensaios de desenvolvimento de projeto de uma aeronave elétrica não tripulada de grande autonomia movida a energia solar. No projeto conceptual, mediante os requisitos da missão, foi definido o conceito da aeronave. A parte conceptual envolveu também a seleção da estrutura que melhor se ajusta à missão e os materiais constituintes da aeronave. No Projeto preliminar é utilizado um estudo paramétrico, mostrando diversas soluções de dimensionamento da aeronave, que tornam possível o cumprimento da missão. Para a elaboração do estudo par

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Sousa, Joana Carlota Caires. "Solar System for a Long Endurance Electric UAV." Master's thesis, 2015. http://hdl.handle.net/10400.6/6480.

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Fossil fuels such as coal, oil and natural gas, are the worldwide primary energy resources. Energy is essencial to the peoples’ well-being and society development, as it is known today and expected in the future to produce and use energy in a sustainable way is vital to our civilization. However, dependence on fossil fuel is awfully high and it is necessary to hinder their use in several industries as it is a limited resource. In the Aeroespace Industry solar energy has been gaining widespread development, becoming the solution to many negative factors. This Master Thesis includes a conceptual

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(9762536), Shupeng Liu. "Sustainable Autonomous Solar UAV with Distributed Propulsion System." Thesis, 2021.

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<p>Solar-powered Unmanned Aerial Vehicles (UAVs) solve the problem of loiter time as aircrafts can fly as long as sufficient illumination and reserve battery power is available. However, Solar-powered UAVs still face the problem of excessive wingspan to increase solar capture area, which detracts from maneuverability and portability. As a result, a feature of merit for solar UAVs has emerged that strives to reduce the wingspan of such UAVs. The purpose of this project is to improve energy use efficiency by applying a distributed propulsion system to reduce the wingspan of solar-powered UAVs an

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Santos, Rúben David Almeida. "Design of a solar UAV for persistent wildlife monitoring." Master's thesis, 2021. http://hdl.handle.net/10400.6/11697.

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Since the beginning of human flight, one of the most difficult goals has been to make an aircraft to stay aloft for very long periods of time. One of the solutions to this problem is to harvest solar energy during flight to increase the flight time and ideally achieve perpetual flight. Generally a solar aircraft does not need to be refuelled or recharged every time it has to start a mission, instead it collects solar energy during the daytime for flight and to recharge the battery for night flight. This process reduces the need for daily operations. This thesis presents a methodology to design

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Yeh, Chia-Hsu, and 葉家序. "Wing Construction of Solar High Altitude Long Endurance UAV." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/khk8q2.

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碩士<br>國立虎尾科技大學<br>飛機工程系航空與電子科技碩士班<br>105<br>Solar powered High Altitude Long Endurance (HALE) UAV, which is designed to fly for days in high altitude, can carry the communication equipment, and research platforms for missions. In order to stay for days in the high attitude, it is crucial to reduce the structural weight as much as possible which maintains the necessary structure strength. Light weight material with high specific strength, such as carbon fiber composite material, high density Styrofoam and aviation plywood, has been extensively used for the wing construction. The streamline fair

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Gong, Jhih-Hua, and 宮志華. "Solar Power Management System Design for UAV On-Board Computer." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/16154177015692941929.

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碩士<br>淡江大學<br>航空太空工程學系<br>92<br>This thesis discusses the design of a power management system for a solar powered uninhabited air vehicle. The power management system provides the required power for the propeller and on board computer systems and monitors the health and the availability of the power source. The system consists of three major stages, namely, the maximum power tracking stage, the Li-ion battery charge/discharge management stage, and the power converting stage. The design results will be evaluated on a solar powered uninhabited air vehicle.

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Geng-Feng, Wang. "Implementation of Solar Power Management System for UAV On-Board Computer." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0002-1702200612271700.

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Hsu, Bo-shuen, and 許博舜. "The Application of Solar Power Technology on UAV Electrical Power System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/89032204313300903129.

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碩士<br>輔英科技大學<br>環境工程與科學系碩士班<br>101<br>In this paper, a solar power generation system was developed to provide electric power to a high-performance, long-endurance UAV, which was designed for three-dimensional atmospheric measuring and monitoring missions. The solar power generation system includes solar modules and a electric power converter, to provide stable voltage and electric current to actuators and servomotors on the UAV. Therefore, the UAV can maneuver precisely and follow the commands of GPS navigation system to fly along specific routes for atmosphere probing missions. The result sh

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Wang, Geng-Feng, and 王政峰. "Implementation of Solar Power Management System for UAV On-Board Computer." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/77641553545888178770.

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碩士<br>淡江大學<br>航空太空工程學系碩士班<br>94<br>In this thesis, we designed and implemented a power management system for a solar powered UAV. The power management system will provide the power required for the on-board computers on UAV. The power management system mainly consists of three stages, the maximum power point tracking, the battery management, and the power conversion stages. The first stage (MPPT) attempts to obtain the maximum power available from the PV panels. The second stage, battery management, controls the charge and discharge processes of the Li-Ion polymer battery modules. The third st

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Wang, Yu-Shiung, and 王鈺翔. "Electronic Source Implementation of UAV by Using Solar Power Energy System." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/55400619898598271907.

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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>91<br>Electronic Source Implementation of UAV by Using Solar Power Energy System is the major study of the paper. The main principles are as fallows. The solar cells are the sources of any kinds of payloads. Because the solar cells are nonlinear source, we must convert energy by using power converter. Such that, the payloads on the UAV can be driven by solar power energy system. In other words, FPGA, DSP and GPS receiver on UAV can be driven by using solar power energy system. After many times of experiments, we find that the power converter of solar cells can

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Chiang, Chih-Kai, and 姜智凱. "Implementation of Guidance Law in A Solar-powered UAV Using the ARMArchitecture Processor." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/70170995064557730621.

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碩士<br>淡江大學<br>航空太空工程學系碩士班<br>104<br>This thesis investigates the implementation of guidance law using the ARM architecture processor. As a sub-project of developing a solar powered unmanned aerial vehicle (UAV), two constraints are imposed on this project: the guidance law must be implemented onboard, and the power is limited. In this research an ARM architecture processor is introduced to generate the guidance command for attitude control onboard. The so-called “Carrot chasing” is selected as the guidance law, and the optimal level turn is employed to realize carrot chasing in order to satisf

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Ke, Min-Jiang, and 柯旻江. "Design and Implementation of Electrical Power System for Solar Powered High Endurance UAV." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/d63458.

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碩士<br>國立虎尾科技大學<br>飛機工程系航空與電子科技碩士班<br>104<br>This thesis presents the design and implementation of Electrical Power System for Solar Powered High Endurance UAV. The energy resources of the proposed UAV are solar panel and lithium battery. The electrical power is converted from solar energy by solar panels during the day and the excess power is charging and saving in batteries. The discharging mode is operated when the solar power is low in comparison to the UAV load under sunlight weakened or at night. Physical characteristics of the PV voltage and current are non-linear relationship. The maxim

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Chou, Jia-Ying, and 周佳穎. "Investigation of Aerodynamic Characteristics of Closed Wing Applied on High-Altitude, Long-Endurance Solar UAV." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7hns68.

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碩士<br>國立虎尾科技大學<br>飛機工程系航空與電子科技碩士班<br>106<br>Closed wing has the advantage including low weight, high stiffness, low induced drag and good stability, and has great potential for development of HALE Solar UAV. This study focuses on reducing the structure weight as well as enhancing stability of maneuverability and environmental tolerance without comprising aerodynamic characteristics. The effects of configuration parameters and installation arrangement of the closed wing designed under different operational conditions have been discussed in detail for the aerodynamic performance. The 3D numerica

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Rodrigues, Afonso Santos. "Airframe assembly, systems integration and flight testing of a long endurance electric UAV." Master's thesis, 2017. http://hdl.handle.net/10400.6/7913.

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The need to adopt new techniques and practices in the Aerospace Industry branch is a consequence of technological development. The present work aims to study the use of solar power as a main energy source in the aviation, in this case for a flight of long endurance of an unmanned air vehicle. This master thesis follows on previous works of the LEEUAV, where it was done the design and construction of a long endurance unmanned aerial system. Thus, the main objective of this work is the systems integration, flight testing and concepts validation. LEEUAV, a prototype of 4.5 meters’ wingspan

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Duarte, Alexandre Emanuel Guerreiro. "Development of the Structure of a long Endurance Electric UAV." Master's thesis, 2016. http://hdl.handle.net/10400.6/6529.

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The goal of this project is to design and create the structure of a long endurance unmanned aerial vehicle (UAV) using solar power. The design’s main requirement was the creation of a low weight structure to handle diverse missions with a 1 Kilogram of payload. The UAV structure was divided in three parts: fuselage, empennages and empennage support, designed using CATIA® to verify interfaces and to study the positioning of the systems access and functionality. Because the main target is to build a low weight structure, the carbon fibre and wood were chosen for the fuselage, empennage support a

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