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Dissertations / Theses on the topic 'Airship'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Avenant, Gerrit Christiaan. "Autonomous flight control system for an airship." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4090.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: In recent years, the use of airships has become popular for observation purposes since they provide a cost effective alternative to other aircraft. For this project a lateral and longitudinal flight control system are required for waypoint navigation flight of an 8m long, non-rigid airship. The airship’s actuators include a rudder, elevator and a propulsion system which can be vectored longitudinally. Two airship models are evaluated for this project. A chosen model is linearised

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2

Merlet, Pierre Miguel. "Flight Mechanics of an Airship." Thesis, KTH, Flygdynamik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290178.

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Airships were very popular 90 years ago with, for example, german Zeppelins. Now theyare back for several reasons, like their low energy consumption.But there are also still many problems to deal with like their sensitivity to wind gusts.In addition, the airships need more studies to improve their flight mechanics and sensitivityto the wind.This degree project, done with the French Aerospace Lab ONERA in Lille, studies a specificairship which is 5mlong and 1.7mwide. First, the airship is studied without wind to determineaerodynamic coefficients and added masses. Then, the model is confronted t

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3

Blouin, Charles. "Trajectory Optimization of a Small Airship." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33166.

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Pseudo-spectral optimal solvers are used to optimize numerically a performance index of a dynamical system with differential constraints. Although these solvers are commonly used for space vehicles and space launchers for trajectory optimization, few experimental papers exist on optimal control of small airships. The objective of this thesis is to evaluate the use of a pseudo-spectral optimal control solver for generating dynamically constrained, minimal time trajectories. A dynamical model of a small airship is presented, with its experimental virtual mass, drag and motor experimentally model

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4

Sullivan, Arthur, and William C. Turner. "EYE IN THE SKY: AIRSHIP SURVEILLANCE." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608425.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>The first airship was invented and designed in 1852 by Henri Giffard, a French engineer. Airships were used by both the Allied and German military for surveillance and bomb dropping in WWI. There was a steady increase in airship use up until the Hindenburg exploded while docking in 1937 at Lakehurst, New Jersey. This tragedy almost ended the use of airships. Significant use of airships next occurred during WWII for submarine surveillance and depth charging. Airships for a

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5

Alsayed, Ahmad. "Pitch and Altitude Control of an Unmanned Airship with Sliding Gondola." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36594.

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An unmanned airship has an ability of heavy lifting capabilities, low environmental footprint, and long endurance, however, the unmanned airships are faced challenges linked to the maneuverability during landing and the reliability of control. In this thesis, the six degrees of freedom equations of motion of a miniature unmanned airship with a sliding gondola have been derived. Then the model was implemented and simulated in the Matlab/Simulink. The wind disturbance was also implemented in the model. The model was then trimmed and linearized in to obtain pitch and altitude PID controllers usi

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6

Guiza, Ghalia. "Reliable and Adaptive CFD Framework for Airship Design." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEM021.

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Cette thèse porte sur la modélisation et la simulation numérique d'écoulements instationnaires et turbulents dans un contexte d'aérodynamique externe. L'étude proposée contribue au développement de méthodes adaptées aux écoulements incompressibles, monophasiques et multiphasiques, autour de divers corps profilés et non-profilés. Celles-ci reposent sur une méthode éléments finis stabilisés innovante de type Variational Multiscale (VMS), dans laquelle la solution est décomposée a priori en une grande échelle résolue et une petite échelle modélisé, dont l’effet sur la grande échelle est pris en c

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7

Shelby, James Richard. "The naval airship and the revolution at sea." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA239526.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, September 1990.<br>Thesis Advisor(s): Hughes, Wayne P. Second Reader: Jackson, John E. "September 1990." Description based on title screen as viewed on December 21, 2009. DTIC Descriptor(s): Airships, Military Operations, Ships, Sizes(Dimensions), Naval Vessels, Ocean Surface, Models, Threats, Navy, Teams(Personnel), Costs, Surfaces, Military Force Levels, Area Defense, Fire Control Systems, Battle Group Level Organizations, Extrapolation, Surface Launched. DTIC Identifier(s): Airship, Fire Control Systems, Blimp, Lighter-than-ai

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8

Carey, Christopher G. "An investigation of the characteristics of an airship fin." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58730.pdf.

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9

Yang, Yin. "Nonlinear control and state estimation of holonomic indoor airship." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106573.

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Three full-state optimal controllers are proposed to fulfill the requirements of flying an indoor holonomic airship in real-time, namely, hovering control, set-point control and continuous reference tracking. In the hovering control design, the airship is assumed to be a quasi stationary plant, and an infinite horizon linear quadratic regulator (LQR) operating in again scheduling manner is employed. Meanwhile, a controller based on the state-dependent Riccati equation (SDRE) and ad hoc feedforward compensation is synthesized to tackle the set-point control problem. Lastly, a continuous tracker

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10

Liesk, Torsten. "Control design and validation for an unmanned, finless airship." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110576.

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There is a resurgent interest in the use of airships for long-endurance and heavy-lift operations, as they provide an energy-efficient means of transportation for missions in which speed is not critical. Autonomous unmanned airships that are capable of flying a predefined path without human interaction can be used for a variety of missions, from wildlife monitoring to civil security tasks. This work investigates the control aspects of a novel, finless airship design with the goal of autonomous operation.In a first step, the dynamics of a finless airship are analysed. The conservative forces ac

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11

Recoskie, Steven. "Autonomous Hybrid Powered Long Ranged Airship for Surveillance and Guidance." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31711.

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With devastating natural disasters on the rise, technological improvements are needed in the field of search and rescue (SAR). Unmanned aerial vehicles (UAVs) would be ideal for the search function such that manned vehicles can be prioritized to distributing first-aid and ultimately saving lives. One of the major reasons that UAVs are under utilized in SAR is that they lack a long flight endurance which compromises their effectiveness. Dirigibles are well suited for SAR missions since they can hover and maintain lift without consuming energy and can be easily deflated for packaging and transpo

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12

Bijker, Johan. "Development of an attitude heading reference system for an airship." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019/502.

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13

Mazhar, Hashim. "Dynamics, control and flight testing of an unmanned, finless airship." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=117157.

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This thesis discusses a number of developments in the dynamics and control of a novel, autonomous, highly-maneuverable, finless, almost-lighter-than-air vehicle (ALTAV). The airship is inherently unstable due to absence of fins and is highly prone to winds. Four vectored thrusters are used to ensure closed-loop stability. This thesis deals with improvements made to an existing dynamics model, including the incorporation of the rotational damping moments of the airship, the drag resulting from the protuberances on the airship hull, the reaction torques and the gyroscopic moments on the airship

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14

Tuta, Navajas Gilmar. "Modelling and Pitch Control of a Re-Configurable Unmanned Airship." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/41998.

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Lighter than air (LTA) vehicles have many advantageous capabilities over other aircraft, including low power consumption, high payload capacity, and long endurance. However, they exhibit manoeuvrability and control reliability challenges, and these limitations are particularly significant for smaller unmanned LTA. In this thesis, a 4 m length autonomous airship with a sliding gondola is presented. A rigid keel, mounted to the helium envelope, follows the helium envelope profile from the midsection to the nose of the vehicle. Moving the gondola along the keel produces upwards of 90-degree chang

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15

Fourie, Daniel Andries. "The dynamic modelling and control system of a tethered aerostat for remote sensing applications." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2984.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Aerostats and Stratolites could play a major role in expanding current satellite and other technologies in the near future. A study was made on the development of aerostat platforms and the current state of Stratolite development. The aim was to develop an airship system that is capable of maintaining a specific position regardless of the presence of wind. The various applications of such a geostationary platform are discussed. A dynamic model of an airship was developed and a

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16

Agpaoa, Roy, Matthew Cawley, Chad Cossey, et al. "Hybrid Airship Multi-Role (HAMR) Anti-Submarine Warfare (ASW) mission capability." Thesis, Monterey, California. Naval Postgraduate School, 2008. http://hdl.handle.net/10945/6935.

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The Hybrid Airship Multi-Role (HAMR) Anti-Submarine Warfare (ASW) Mission Module project applies established systems engineering principles and processes to the design of an ASW payload module that examines the capability of the HAMR to perform persistent ASW mission support. Critical system functions and objectives are identified and are assigned appropriate quantitative metrics. Additionally, three alternative architectures are generated and evaluated using the appropriate metrics based on results from modeling using Naval Systems Simulation (NSS). Manning is considered as a key stakehol

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17

Heller, Richard S. M. Massachusetts Institute of Technology. "Evaluation of a heated-air airship for the environment of Titan." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/67614.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 59-63).<br>Future exploration of Saturn's moon Titan can be carried out by airships, which have the capability to study the atmosphere as well as the capability to land and study the surface at multiple locations. Several lighter-than-air gas airships and passive drifting heated-air balloon designs have been studied, but a heated-air airship could combine the best of both. A design tool was created to enable iteration t

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18

Peddiraju, Prashant. "Development and validation of a dynamics model for an unmanned finless airship." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:8881/R/?func=dbin-jump-full&object_id=92186.

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19

Valdmanis, Mikelis. "Localization and navigation of a holonomic indoor airship using on-board sensors." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=97204.

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Two approaches to navigation and localization of a holonomic, unmanned, indoor airship capable of 6-degree-of-freedom (DOF) motion using on-board sensors are presented. First, obstacle avoidance and primitive navigation were attempted using a light-weight video camera. Two optical flow algorithms were investigated. Optical flow estimates the motion of the environment relative to the camera by computing temporal and spatial fluctuations of image brightness. Inferences on the nature of the visible environment, such as obstacles, would then be made based on the optical flow field. Results showed

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20

Chen, Jou-An. "Airship, Automaton, and Alchemy: A Steampunk Exploration of Young Adult Science Fiction." Thesis, University of Canterbury. Humanities, 2012. http://hdl.handle.net/10092/7423.

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Steampunk first appeared in the 1980s as a subgenre of science fiction, featuring anachronistic technologies with a veneer of Victorian sensibilities. In recent years steampunk has re-emerged in young adult science fiction as a fresh and dynamic subgenre, which includes titles such as The Girl in the Steel Corset by Kady Cross, The Hunchback Assignment by Arthur Slade, and Mortal Engines by Philip Reeve. Like their predecessors, these modern steampunk novels for teens use retrofuturistic historiography and innovative mechanical aesthetics to dramatize the volatile relationship between man and

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21

Neilson, Christopher James. "Flights of imagination : episodes in the development of the British navigable airship 1900-1930." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492070.

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22

Kornienko, Andrei. "System identification approach for determining flight dynamical characteristics of an airship from flight data." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-28803.

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23

Ben, abdallah Fida. "Modeling and control of a cabel driven parallel manipulator suspended by a heavy lift airship." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLE009/document.

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A l'heure où le monde entier appelle à développer de nouvelles technologies de transport afin de faire face au défi écologique, des projets de dirigeables gros porteurs permettent de relever ce défi. En outre, les dernières avancées technologiques dans le domaine de l'aérospatiale ont permis de résoudre un certain nombre de problèmes responsables de l'hibernation des grands dirigeables pendant plus d'un demi-siècle. Ceci a donné naissance à de nouveaux types de dirigeables gros porteurs. Dans cette thèse, le modèle dynamique du dirigeable gros porteur est défini afin de concevoir un contrôleur

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24

Le, mestre Robin. "Modeling of external and internal fluid effects on the dynamic behaviour of a flexible airship." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAE008.

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Cette thèse de doctorat porte sur la modélisation et la simulation des interactions fluide-structure entre un dirigeable souple, un écoulement externe et un gaz porteur interne. On considère que le fluide est potentiel du fait de la grande taille des dirigeables. L’écoulement potentiel est résolu sur un maillage de l’interface fluide-structure grâce à la Méthode des Éléments de Frontière, et le travail des efforts associés est obtenu par la Méthode des Eléments Finis. Les équations du fluide sont exprimées dans un formalisme Arbitrairement Lagrangien-Eulérien. Afin de se ramener à des calculs

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25

Singh, Vinay. "Design and Shape Optimization of Unmanned, Semi-Rigid Airship for Rapid Descent Using Hybrid Genetic Algorithm." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/38673.

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Airships provide an eco-friendly and cost-effective means to suit sustained airborne operations. Smaller autonomous airships are highly susceptible to adverse atmospheric conditions owing to their under-actuated, underpowered and bulky size relative to other types of unmanned aerial vehicles (UAVs). To mitigate these limitations, careful considerations of the size and shape must be made at the design stage. This research presents a methodology for obtaining an optimized shape of a semi-rigid airship. Rapid descent of the LTA ship is achieved by means of a moving gondola attached to a rigid kee

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26

La, Gloria Nicola. "Simultaneous localization and mapping applied to an airship with inertial navigation system and camera sensor fusion." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3421761.

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This thesis handles the problem of Simultaneous Localization an Mapping (SLAM) applied to airships by sensor fusion between Inertial Measurement Unit (IMU) and a Vision system (mono or stereo cameras). The simultaneous localization and mapping problem asks if it is possible for a mobile robot to be placed at an unknown location in an unknown environment and to incrementally build a consistent map of this environment while simultaneously determining its location within this map. Lighter-than-atmosphere (LTA) systems provide signi?cant advantages for planetary exploration due to their

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27

Seifert, Moritz. "Volvo Volem." Thesis, Umeå universitet, Designhögskolan vid Umeå universitet, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-149735.

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What if the future of transportation was more diverse, more exciting and more responsible? What if Volvo became a true mobility provider with a broader product palette? What if the airship would finally get its great renaissance and what would it look like if Volvo developed it? With these questions in mind, I started my thesis and eventually designed an airship for Volvo. The word Volvo is derived from Latin and means “I roll” which inspired me to pick the name “Volem” which is equally derived from Latin and means “I fly”. The focus of the degree work is transport in tourism and the final co

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28

Rubach, Florian [Verfasser]. "Aerosol processes in the Planetary Boundary Layer: High resolution Aerosol Mass Spectrometry on a Zeppelin NT Airship / Florian Rubach." Wuppertal : Universitätsbibliothek Wuppertal, 2014. http://d-nb.info/1046605755/34.

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29

Klvaňa, Pavel. "Design nákladní vzducholodě." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231114.

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30

Ondra, Martin. "Design vyhlídkové vzducholodi." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230075.

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Diploma thesis concerns with design of a lookout airship. The work tries to find a solution to a problem, how to connect technology, ergonomics and aesthetics into design of new product. Analysis of complete dilemma leads to a new design of an airship, which should become a valuable aircraft for transporting passangers, travelling and flying untraditional sightseeing flights

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31

Kazanas, Konstantinos [Verfasser], Andreas [Gutachter] Wahner, and Thomas F. [Gutachter] Mentel. "Morning Aerosol vertical profiles in the Planetary Boundary Layer: Observations on a Zeppelin NT Airship and comparison with a Regional Model / Konstantinos Kazanas ; Gutachter: Andreas Wahner, Thomas F. Mentel." Köln : Universitäts- und Stadtbibliothek Köln, 2017. http://d-nb.info/1161531793/34.

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32

Prusakiewicz, Lukas, and Simon Tönnes. "Comparison of autonomous waypoint navigation methods for an indoor blimp robot." Thesis, KTH, Mekatronik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284458.

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The Unmanned Aerial Vehicle (UAV) has over the last years become an increasingly prevalent technology in several sectors of modern society. Many UAVs are today used in a wide series of applications, from disaster relief to surveillance. A recent initiative by the Swedish Sea Rescue Society (SSRS) aims to implement UAVs in their emergency response. By quickly deploying drones to an area of interest, an assessment can be made, prior to personnel getting there, thus saving time and increasing the likelihood of a successful rescue operation. An aircraft like this, that will travel great distances,

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33

Nong, Yulin. "Design of small highly maneuverable airships." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110660.

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The aim of this thesis is to develop the theoretical framework that integrates airship size minimization, maneuverability quantification and optimal actuator placement for small highly maneuverable airship design. The size minimization method is proposed in the first part of the thesis. The sizing flow chart is provided along with a comprehensive description and computationof four principle subsystems in airship sizing. The relationships between different subsystems are also illustrated. Novel technologies that could be applied for airship subsystems are discussed and included in the proposed

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34

Li, Yuwen. "Dynamics modeling and simulation of flexible airships." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18756.

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The resurgence of airships has created a need for dynamics models and simulation capabilities of these lighter-than-air vehicles. The focus of this thesis is a theoretical framework that integrates the flight dynamics, structural dynamics, aerostatics and aerodynamics of flexible airships. The study begins with a dynamics model based on a rigid-body assumption. A comprehensive computation of aerodynamic effects is presented, where the aerodynamic forces and moments are categorized into various terms based on different physical effects. A series of prediction approaches for different aerodyna

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35

Mei, Qiang. "A Solar Power System for High Altitude Airships." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1306077427.

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36

Pitts, Robert Owen. "An urban airshed model." Thesis, Pitts, Robert Owen (1991) An urban airshed model. PhD thesis, Murdoch University, 1991. https://researchrepository.murdoch.edu.au/id/eprint/51350/.

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A numerical mesoscale model, originally developed by Pielke (1974), is validated and applied to simulating the mesoscale meteorology of the Swan coastal plain of Western Australia as the basis for an urban airshed model. Since the only radiosonde profile available to initialise the model is influenced by downslope flow from the nearby asymmetric Darling Scarp, the validation incorporates model comparisons with aircraft cross-sections of temperature and humidity across the coastal plain. These observations highlight topographically induced hydraulic jumps, lee waves or vertically propagatin

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Magnusson, Oscar. "Rebirth of the cool : to awake a sleeping beauty." Thesis, Konstfack, Industridesign, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-857.

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My project is split in two, one theoretical part and one empirical part. The first part is based on existing theories within design and marketing. I focused my research on management theories, research methods and consumer behavior theories. The second part is based upon a case study "Rebirth of the airship", where I test the method identified in the first part. The case study also includes a straight forward design process and a qualitative field research. In the final part of the project I conclude my findings and reflect upon the work method and the result at hand.

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Faria, Bruno Guedes. "Identificação dinamica longitudinal de um dirigivel robotico autonomo." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260166.

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Orientadores: Paulo Augusto Valente Ferreira, Ely Carneiro de Paiva<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-04T03:59:44Z (GMT). No. of bitstreams: 1 Faria_BrunoGuedes_M.pdf: 2340545 bytes, checksum: 440ff7a9aa46f5a39514e81423363750 (MD5) Previous issue date: 2005<br>Resumo: Nos últimos anos tem-se observado um crescente interesse de empresas e instituições de pesquisa pelo desenvolvimento de veículos robóticos, dotados de diferentes níveis de capacidade de operação autônoma, objetiv

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Müller, Jörg [Verfasser], and Wolfram [Akademischer Betreuer] Burgard. "Autonomous navigation for miniature indoor airships = Autonome Navigation für Miniaturluftschiffe in Innenräumen." Freiburg : Universität, 2013. http://d-nb.info/1114829153/34.

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Lynch, Sarah R. "Consensus on the Effective Employment of Hybrid Airships in Future Disaster Logistics." Thesis, Capella University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10747168.

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<p> The scholarly research on emergency supply chain management acknowledges its inherent significance in efficacious disaster response, however, what is unknown is how to employ alternative means of transportation, specifically hybrid airships, to deliver relief aid direct to a point of need amidst a lack of intact infrastructure following disaster. The purpose of this study was to investigate subject matter expert opinions to determine the level of consensus on how to apply the innovative transportation mode of hybrid airships to emergency supply chain management through delivery of emergenc

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Gomes, S. B. V. "An investigation into the flight dynamics of airships with application to the YEZ-2A." Thesis, Cranfield University, 1990. http://hdl.handle.net/1826/3015.

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In order to construct a flight dynamics computer simulation model of airship flight with a high degree of fidelity in the aerodynamic modelling, extensive wind tunnel testing was carried out. This was aimed at, first developing some specific airship wind tunnel testing techniques and then to obtain aerodynamic data for the YEZ-2A project airship being designed and built by Airship Industries for the US Navy. The wind tunnel testing techniques so developed insured a good matching between wind tunnel results and flight test data from existing airships. The next step consisted in the construction

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Rottmann, Axel [Verfasser], and Wolfram [Akademischer Betreuer] Burgard. "Approaches to online reinforcement learning for miniature airships = Online Reinforcement Learning Verfahren für Miniaturluftschiffe." Freiburg : Universität, 2012. http://d-nb.info/1123473560/34.

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43

Dzeko, Elvir, and Markus Carlsson. "Autonoma drönare : modifiering av belöningsfunktionen i airsim." Thesis, Högskolan i Borås, Akademin för bibliotek, information, pedagogik och IT, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-15039.

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Inom det heta forskningsområdet med självflygande drönare sker det en kontinuerlig utveckling både inom forskningen och inom industrin. Det finns flera forskningsproblem kring autonoma fordon, inklusive autonom styrning av drönare. Ett intressant spår för autonom styrning av drönare, är via deep reinforcement learning, dvs. en kombination av djupa neuronnät med reinforcement learning. Problemen som ofta uppkommer är tidskrävande träning, ineffektiv manövrering och problem med oförutsägbarhet och säkerhet. Även höga kostnader kan vara ett problem. Med hjälp av simuleringsprogrammet AirSim har v

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Anderson, Abby Hodel A. Scottedward. "Design, testing, and simulation of a low-cost, light-weight, low-g IMU for the navigation of an indoor blimp." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/ANDERSON_ABBY_43.pdf.

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Dhanji, Nasreen. "Comparative study of aerial platforms for Mars exploration." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112565.

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The primary objective of this thesis is to develop a framework to compare the performance of fixed-wing aircraft, airships, and the rotary-wing aircraft in the Martian environment and through that framework, determine which of these platforms is best suited to conduct a series of scientific investigations on Mars. Three Mars mission scenarios provide the context within which the performance of the platforms is evaluated. The mission scenarios are used to derive the performance requirements including the range and flight path to be covered, the altitude at which the platforms fly, and the scien

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Thornton, David Phillip. "The New Zealand National Environmental Standards for ambient air quality: analysis and modelling case study." Thesis, University of Canterbury. Geography, 2007. http://hdl.handle.net/10092/1501.

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Historically, the New Zealand rationale behind air quality management has been to adopt an effects-based approach based on environmental impacts. Generally, this method has been efficient in that it permitted emitters to decide how to minimise and mitigate impacts. However, to address the inconsistencies in air quality management across New Zealand born of this approach, and to permit measures designed to improve the working of the Resource Management Act (RMA), National Environmental Standards for Ambient Air Quality have been developed and implemented to establish consistent regulation and p

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Acton, Brian E., and David L. Taylor. "Autonomous Dirigible Airships: a Comparative Analysis and Operational Efficiency Evaluation for Logistical Use in Complex Environments." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/7299.

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MBA Professional Report<br>Approved for public release, distribution unlimited<br>The fiscal year 2012 budget resolution forced many agencies to significantly reduce their budget spending and adhere to stricter budgetary policies. The one agency that was hit the hardest was the Department of Defense; it was forced to reduce its budget by $10 trillion over a span of 10 years. With the ongoing War on Terror, the Department of Defense estimated in 2010 that the cost of maintaining a single soldier in a wartime environment grew exponentially to well over $1 million per soldier. The U.S. involvemen

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Carbone, Giovanni Francesco Davide. "Comportement dynamique d'un dirigeable en écoulement non homogène." Thesis, Ecole nationale supérieure Mines-Télécom Lille Douai, 2020. http://www.theses.fr/2020MTLD0009.

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L’objectif de cette thèse est d’étudier l’aérodynamique d’un dirigeable dans des conditions d’écoulement instationnaires et non homogènes, en décrivant sa dynamique au moyen de modèles simples et d’outils de calcul rapides et efficaces. En raison de leur « légèreté », les dirigeables sont plus sensibles aux perturbations de l’air. Cela a un impact important sur leur contrôlabilité et par conséquent sur le dimensionnement des gouvernes et du système propulsif.Les phénomènes aérodynamiques liés à la notion de masses et inerties ajoutées, qui sont observés pendant les phases de mouvement relatif

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Camplin, Giles. "Rediscovering the arcane science of ground handling large airships : an investigation into ways of reducing the risks inherent in the development of a new generation of very large airships and of establishing guidelines for their ground handling procedure." Thesis, City University London, 2007. http://openaccess.city.ac.uk/8521/.

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This research, which was begun as part of the now defunct CargoLifter project, concerns the ground handling and support systems of the large rigid airships (commonly known as "Zeppelins") that were built between 1900 and 1940. The intention was to assess the value of such historical information as has survived from the previous generation of very large airships in order to minimise the physical and financial risks inherent in the development of any future generations of such aircraft. The idea was to isolate and understand the fundamental issues that were actually encountered by the ground bas

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Valestuk-Henderson, Elizabeth A. "An airshed management framework for a selected area in South Central Alberta." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0020/MQ26773.pdf.

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