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Dissertations / Theses on the topic 'Flight Efficiency'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Jacobsen, Marianne. "On improving efficiency of flight using optimization." Doctoral thesis, Stockholm : Skolan för teknikvetenskap, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10958.

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2

Gilmour, Kathleen Mary. "Power output and efficiency of asynchronous insect flight muscle." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240111.

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3

Feher, Kamilo. "FQPSK Doubles Spectral Efficiency of Telemetry: Advances and Initial Air to Ground Flight Tests." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607395.

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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California<br>FQPSK is the abbreviation for Feher Quadrature Phase Shift Keying (FQPSK) patented systems [1]. Digcom, Inc. licensed FQPSK products demonstrated significant spectral saving and RF power efficient robust BER performance advantages. These bit rate agile modems and Non Linearly Amplified (NLA) transceivers, DSP and hardware implementations, and in some instances “software-radios” (20kb/s to more than 100Mb/s) and RF frequency agile (from 150MH

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Blakely, Patrick A. "Wireless Transducer Systems Architectures – A User’s Perspective." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/607468.

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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>This paper provides essential requirements and describes some possible architectures of so-called Wireless Transducers Systems from the user’s perspective and discusses the application advantages of each architecture, in the airplane-testing environment. The intent of this paper is to stimulate discussion in the transducer user and supplier communities and standards committees, leading to increased product suitability and lower cost for commercial off the shelf wi

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Briggs, James R. "Advanced Range Telemetry (ARTM) Systems Integration at the Air Force Flight Test Center." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/606480.

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International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>The aeronautical telemetry frequency spectrum is continually shrinking. More and more government frequencies are being sold to telecommunications companies. To make matters worse, more complicated weapons systems are spurring the demand for higher data rates. The telemetry infrastructure is struggling to meet these demands as the equipment continues to age and is, in some cases, no longer supported by the manufacturer. The loss of portions of the aeronautical

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6

Morast, Embla, and Einar Svantesson. "Efficiency of a Time-of-Flight Detection System for Analysis of Wall Material From Controlled Fusion Devices." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214736.

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Time-of-flight elastic recoil detection analysis (ToFERDA)is a method for material analysis which has provenadvantageous when examining wall samples from fusion devicesas well as for tracking tracer isotopes such as deuterium, oxygen-18 and nitrogen-15. When ToF-ERDA data is processed tocalculate the composition of a material, the detection efficiencyis used to compensate for the lower detection rate of lighterelements. The aim of this project is to examine how the efficiencyof the time-of-flight detector in a ToF-ERDA experimental setupdepends on its settings and determine efficiency paramete

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Wigent, Mark A., and Andrea M. Mazzario. "Enhanced Query Data Recorder (EQDR) - A Next Generation Network Recorder Built Around iNET Standards." International Foundation for Telemetering, 2014. http://hdl.handle.net/10150/577499.

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ITC/USA 2014 Conference Proceedings / The Fiftieth Annual International Telemetering Conference and Technical Exhibition / October 20-23, 2014 / Town and Country Resort & Convention Center, San Diego, CA<br>The Enhanced Query Data Recorder (EQDR) has been developed under the Test Resource Management Center's (TRMC) Spectrum Efficient Technologies (SET) T&E S&T program. The EQDR is a network flight recorder built around the iNET standards and which is intended to meet the future needs of the networked telemetry environment. The EQDR is designed to support the "fetch" of recorded test data durin

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Wigent, Mark A., and Andrea M. Mazzario. "Spectrum Savings from High Performance Network Recording and Playback Onboard the Test Article." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581609.

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ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California<br>The Test Resource Management Center's (TRMC) Spectrum Efficient Technologies (SET) S&T program is sponsoring development of the Enhanced Query Data Recorder (EQDR), a network flight recorder that is intended to meet the future needs of the networked telemetry environment. EQDR is designed to support the "fetch" of recorded test data during a test without interrupting the ongoing

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9

King, Raymond John. "Dynamic Mechanical Properties of Resilin." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/33677.

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Resilin is an almost perfect elastic protein found in many insects. It can be stretched up to 300% of its resting length and is not affected by creep or stress relaxation. While much is known about the static mechanical properties of resilin, it is most often used dynamically by insects. Unfortunately, the dynamic mechanical properties of resilin over the biologically relevant frequency range are unknown. Here, nearly pure samples of resilin were obtained from the dragonfly, Libellua luctuosa, and dynamic mechanical analysis was performed with a combination of time-temperature and time-conce

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Väyrynen, Chytiris Ion. "Flygskatten : En studie om måluppfyllelse, kostnadseffektivitet och incitament till teknologisk utveckling." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-71746.

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Den 1 april 2018 implementerade den svenska regeringen en flygskatt i Sverige med målet att minska den svenska flygindustrins utsläpp i atmosfären. Med hjälp av nationalekonomisk mikroteori, tidigare studier, statistik, egna beräkningar och jämförelser baserade på sekundärdata, analyserar uppsatsen den svenska flygskattens måluppfyllelse, kostnadseffektivitet och incitament till teknologisk utveckling. Uppsatsen når slutsatsen att den nuvarande utformningen av den svenska flygskatten inte uppfyller kraven för de styrmedel som främjar kostnadseffektivitet, inte ger några ytterligare incitament

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11

McEnteggart, Quintain. "On the generation of environmentally efficient flight trajectories." Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/10001.

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To achieve a sustainable future for air transport, the International Civil Aviation Organization has proposed goals for reductions in community noise impact, local air quality and climate impacting emissions. The goals are intended to be achieved through advances in engine design, aircraft design and through improvements in aircraft operational procedures. This thesis focuses on operational procedures, and considers how trajectory generation methods can be used to support ight and airspace planners in the planning and delivery of environmentally e cient ight operations. The problem of planning

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12

Feldman, Michael A. "Efficient Low-Speed Flight in a Wind Field." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/36527.

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A new software tool was needed for flight planning of a high altitude, low speed unmanned aerial vehicle which would be flying in winds close to the actual airspeed of the vehicle. An energy modeled NLP formulation was used to obtain results for a variety of missions and wind profiles. The energy constraint derived included terms due to the wind field and the performance index was a weighted combination of the amount of fuel used and the final time. With no emphasis on time and with no winds the vehicle was found to fly at maximum lift to drag velocity, V<sub>md</sub>. When flying in tail wind

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13

Vandehzad, Mashhood. "Efficient flight schedules with utilizing Machine Learning prediction algorithms." Thesis, Malmö universitet, Fakulteten för teknik och samhälle (TS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20663.

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While data is becoming more and more pervasive and ubiquitous in today’s life, businesses in modern societies prefer to take advantage of using data, in particular Big Data, in their decision-making and analytical processes to increase their product efficiency. Software applications which are being utilized in the airline industry are one of the most complex and sophisticated ones for which conducting of data analyzing techniques can make many decision making processes easier and faster. Flight delays are one of the most important areas under investigation in this area because they cause a lot

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14

Hannaske, Roland. "Measurement of the photodissociation of the deuteron at energies relevant to Big Bang nucleosynthesis." Helmholtz-Zentrum Dresden - Rossendorf, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-201284.

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Zwischen 10 und 1000 s nach dem Urknall bildeten sich während der Big Bang Nukleosynthese (BBN) die ersten leichten Elemente aus Protonen und Neutronen. Die primordialen Häufigkeiten dieser Elemente hingen von denWirkungsquerschnitten der beteiligten Kernreaktionen ab. Vergleiche zwischen den Ergebnissen nuklearer Netzwerkrechnungen mit astronomischen Beobachtungen bieten eine einzigartige Möglichkeit, etwas über das Universum zu dieser Zeit zu erfahren. Da es für die p(n,g)d-Reaktion, die eine Schlüsselreaktion der BBN ist, kaum Messungen im relevanten Energiebereich gibt, beruht deren Reakti

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15

Curtoni, Sébastien. "Développement d'un démonstrateur d'hodoscope faisceau en diamant pour le contrôle en ligne du parcours des ions en hadronthérapie." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALY045.

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Ce manuscrit de thèse présente l’étude et le développement d’un démonstrateur d’hodoscope faisceau conçu pour l’étiquetage spatial et temporel des faisceaux d’ions en hadronthérapie. Ce travail intervient dans la problématique du contrôle en ligne des traitements, et plus particulièrement, dans l’amélioration des systèmes de vérification du parcours basés sur la détection de photons gamma-prompts générés par l’ion incident dans la matière le long de sa trajectoire. Le diamant synthétique a été choisi pour sa résistance aux radiations et sa rapidité, permettant d’atteindre une résolution tempor

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16

van, Manen J., and Volker Grewe. "Algorithmic climate change functions for the use in eco-efficient flight planning." Elsevier, 2018. https://publish.fid-move.qucosa.de/id/qucosa%3A72223.

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Aviation contributes significantly to anthropogenic climate change, and one promising possibility for mitigation is eco-efficient flight planning by avoiding climate sensitive regions with only small changes in the aircraft trajectories. Climate sensitive regions result from strong spatial variation of the global climate impact of local non-CO2 emissions, which are expressed by so-called climate change functions. Previous research established high-fidelity climate change functions (CCFs) for aviation water vapour and NOx emissions, and contrail formation with a climate model as inputs for air

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17

Macdonald, John Charles. "Efficient Estimation for Small Multi-Rotor Air Vehicles Operating in Unknown, Indoor Environments." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3496.

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In this dissertation we present advances in developing an autonomous air vehicle capable of navigating through unknown, indoor environments. The problem imposes stringent limits on the computational power available onboard the vehicle, but the environment necessitates using 3D sensors such as stereo or RGB-D cameras whose data requires significant processing. We address the problem by proposing and developing key elements of a relative navigation scheme that moves as many processing tasks as possible out of the time-critical functions needed to maintain flight. We present in Chapter 2 analysis

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18

Taylor, Dana J. "A method for the efficient calculation of elastic rotor blade dynamic response in forward flight." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/12396.

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19

Hall, Bentley (Tyler), Hayward (Trey) Hargrove, and James (Marshall) Willis. "Analysis of Current Flight Scheduling Practices and Recommendations to Efficiently Reduce Deviations from Syllabus Time-To-Train." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/7069.

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EMBA Project Report<br>EXECUTIVE SUMMARY: The objective of our project is to investigate current scheduling requirements, constraints, and procedures to identify problems with scheduling practices and syllabus management for Primary Flight Training in Training Wing 4. We analyzed three alternative scheduling approaches to reduce excess training time in the maximum efficient manner. Alternative 1: Prioritize students based on deviations from syllabus flow Changing the prioritization of students does not have a direct impact on reducing Training Timeline, since no additional production capacity

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20

Rakdham, Bert. "Efficient multiple hypothesis track processing of boost-phase ballistic missiles using IMPULSEÂ©-generated threat models." Thesis, Monterey, California. Naval Postgraduate School, 2006. http://hdl.handle.net/10945/2624.

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In this thesis, a multiple hypotheses tracking (MHT) algorithm is developed to successfully track multiple ballistic missiles within the boost phase. The success of previous work on the MHT algorithm and its application in other scientific fields enables this study to realize an efficient form of the algorithm and examine its feasibility in tracking multiple crossing ballistic missiles even though various accelerations due to staging are present. A framework is developed for the MHT, which includes a linear assignment problem approach used to search the measurement-to-contact association

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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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22

Heim, Eugene Henry DeWendt. "Development of Methods for Improved Data Integrity and Efficient Testing of Wind Tunnel Models for Dynamic Test Conditions in Unsteady and Nonlinear Flight Regimes." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31050.

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Todayâ s high performance aircraft are operating in expanded flight envelopes, often maneuvering at high angular rates at high angles-of-attack, even above maximum lift. Current aerodynamic models are inadequate in predicting flight characteristics in the expanded envelope, such as rapid aircraft departures and other unusual motions. Unsteady flows of aircraft are of real concern. The ability to accurately measure aerodynamic loads directly impacts the ability to accurately model and predict flight. Current wind tunnel testing techniques do not adequately address the data fidelity of a test p

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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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24

Nikulin, Pavel [Verfasser], den Hoff Jörg [Gutachter] van, and Klaus Peter [Gutachter] Schäfers. "Development of methods for time efficient scatter correction and improved attenuation correction in time-of-flight PET/MR / Pavel Nikulin ; Gutachter: Jörg van den Hoff, Klaus Peter Schäfers." Dresden : Technische Universität Dresden, 2019. http://d-nb.info/1227196776/34.

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Nikulin, Pavel [Verfasser], den Hoff Jörg Gutachter] van, and Klaus Peter [Gutachter] [Schäfers. "Development of methods for time efficient scatter correction and improved attenuation correction in time-of-flight PET/MR / Pavel Nikulin ; Gutachter: Jörg van den Hoff, Klaus Peter Schäfers." Dresden : Technische Universität Dresden, 2019. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa2-359720.

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26

Buridon, Victor. "Application de la spectrométrie de masse COINTOF à l'étude de la dissociation de petits agrégats d'eau protonés par collision sur un atome d'argon : développement d'une cible de nano-gouttes de gaz rare." Phd thesis, Université Claude Bernard - Lyon I, 2013. http://tel.archives-ouvertes.fr/tel-00994146.

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L'étude de l'irradiation dans le système moléculaire à l'échelle du nanomètre est un domaine d'investigation innovant des sciences des radiations. Le Dispositif d'Irradiation d'Agrégats Moléculaires (DIAM) est conçu en vue les conséquences de l'irradiation dans des petits systèmes moléculaires modèles comme les agrégats d'eau protonés. L'irradiation provoque la fragmentation en plusieurs fragments neutres ou chargés. La technique de spectrométrie de masse COINTOF (Correlated Ion and Neutral Time of Flight) permet la détection corrélées des fragments neutres et chargés issus de la dissociation

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27

"Efficiency Based Flight Analysis for a Novel Quadcopter System." Master's thesis, 2019. http://hdl.handle.net/2286/R.I.53666.

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abstract: For a conventional quadcopter system with 4 planar rotors, flight times vary between 10 to 20 minutes depending on the weight of the quadcopter and the size of the battery used. In order to increase the flight time, either the weight of the quadcopter should be reduced or the battery size should be increased. Another way is to increase the efficiency of the propellers. Previous research shows that ducting a propeller can cause an increase of up to 94 % in the thrust produced by the rotor-duct system. This research focused on developing and testing a quadcopter having a centrally duct

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28

De, Paolis Pierluigi. "Experimental Flight Test Management. Optimization procedures and flight test techniques for test time efficiency and cost reduction." Tesi di dottorato, 2016. http://www.fedoa.unina.it/10722/1/depaolis_pierluigi_27.pdf.

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Approaching to flight test is paramount to keep clear in mind that accurate test management is the cornerstone between failure and success. Flight testing remains an essential element of sound air vehicle development. The current emphasis on expanding the use of M&S has been promulgated with the intention that it can help to reduce flight test time and cost, enhance test safety, and increase testing efficiency. The “predict-test-validate” (a.k.a. ”model-test-model”) paradigm is held forth as the most efficient combination of these development tools. In this paradigm the initial modelling and

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Tsai, Li-jane, and 蔡麗娟. "A STUDY OF THE CROSS-STRAIT DIRECT FLIGHT AIRPORTS’OPERATING EFFICIENCY BETWEEN TAIWAN AND MAINLAND CHINA." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/70806068922598605511.

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碩士<br>大同大學<br>事業經營學系(所)<br>98<br>This study selects 30 major airports of the same operation in cross-strait direct flights between Taiwan and China from 2007 to 2008 as the samples for evaluation of airport operational efficiency. We use the SPSS statistical analysis software and DEA-Solver software for data envelopment analysis, slack variable analysis and sensitivity analysis for the data collected. The study result is used as reference for managers in airport operations. The study applies CCR-Output model proposed by Charnes et al. (1978) on the analysis of relative efficiency for airport

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CHEN, CHENG-KAI, and 陳政愷. "Value Chain Analysis With Knowledge Management And Reliability Centered Maintenance To Approve Full Flight Simulator’s Maintenance Efficiency." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/2n44h3.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>102<br>The flight simulated machine is also called he flight simulator,it is a complex mechatronics training machine containing a lot of mechatronic integration technology. It’s importance is to help airlines training pilots. As we all know, the flight could not be tested using the real aircraft for two reasons.The first one is expensive: Aircraft’s fuel is quite expensive, training with the real aircraft is expensive and dangerous. Second, training effect and purpose could not be reached: Flight’s various unexpected situations should implemented only in simulated

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Bartlett, Ryan Paul. "Efficiency of collection methods and flight activity of Ichneumonidae (Hymenoptera) in three sites in Guanacaste, Costa Rica." 2000. http://purl.galileo.usg.edu/uga%5Fetd/bartlett%5Fryan%5Fp%5F200008%5Fms.

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32

YUAN, CHEN JUI, and 陳瑞元. "Research Analysis and Suggestions on Increasing the Revenue of In-flight Duty-Free Merchandise and Improving the Operation Efficiency of Bonded Warehouse." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/32wn33.

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碩士<br>逢甲大學<br>纖維與複合材料學系<br>106<br>The aviation industry is a very competitive industry. Operating reve-nues comes from the passenger earnings, air cargo transportation and air-craft maintenance. In terms of gaining profit from air tickets, it depends on its route, safety, quality and service, etc. Theoretically, increased income will lead to increased business revenues. Because there are many authori-zation related issues in aircraft maintenance, the profit of adequate mainte-nance stays relatively stable. Airline fuel continues to be the largest sin-gle cost item, which collectively accounts

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33

Reichert, Todd. "Kinematic Optimization in Birds, Bats and Ornithopters." Thesis, 2011. http://hdl.handle.net/1807/31913.

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Birds and bats employ a variety of advanced wing motions in the efficient production of thrust. The purpose of this thesis is to quantify the benefit of these advanced wing motions, determine the optimal theoretical wing kinematics for a given flight condition, and to develop a methodology for applying the results in the optimal design of flapping-wing aircraft (ornithopters). To this end, a medium-fidelity, combined aero-structural model has been developed that is capable of simulating the advanced kinematics seen in bird flight, as well as the highly non-linear structural deformations typic

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Xin-XianTang and 唐信賢. "High Efficiency Antenna Design for Low Altitude Flights." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/72597104090669522231.

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Peacock, James. "The relationship between foot-ball impact with kick outcome in football kicking." Thesis, 2018. https://vuir.vu.edu.au/37861/.

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Across the football codes, kicking is the main skill used to score goals and pass between team members. Kicking with high ball velocity and high accuracy is required to kick to targets at far distances or reach a submaximal target in less time. The impact phase is the most important component of the kicking action: it is the only time a player forcefully contacts the ball to produce the flight path. Ensuring high impact efficiency and the appropriate combination of flight characteristics are imparted onto the ball during foot-ball impact is important for successful kicking. The aim of this the

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Young, Joseph Kenneth. "AUTOMATING THE DATA REDUCTION PROCESS FOR MORE EFFICIENT FLIGHT TESTS AND REDUCING THE TIME FROM DAYS TO HOURS." 2010. http://trace.tennessee.edu/utk_gradthes/846.

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The University of Tennessee Space Institute’s (UTSI) active airborne science program often requires extensive modification to its fleet of aircraft in order to meet mission and customer requirements. These modifications can alter the flight characteristics of the aircraft. In order to determine if the aircraft is safe to fly after modification and to find any new flight characteristics resulting from the modifications, the flight test engineer (FTE) must plan and conduct limited flight testing on the aircraft and evaluate the resulting data to ensure safety of flight. The more efficient the da

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Nikulin, Pavel. "Development of methods for time efficient scatter correction and improved attenuation correction in time-of-flight PET/MR." 2019. https://tud.qucosa.de/id/qucosa%3A35972.

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In der vorliegenden Dissertation wurden zwei fortdauernde Probleme der Bildrekonstruktion in der time-of-flight (TOF) PET bearbeitet: Beschleunigung der TOF-Streukorrektur sowie Verbesserung der emissionsbasierten Schwächungskorrektur. Aufgrund der fehlenden Möglichkeit, die Photonenabschwächung direkt zu messen, ist eine Verbesserung der Schwächungskorrektur durch eine gemeinsame Rekonstruktion der Aktivitäts- und Schwächungskoeffizienten-Verteilung mittels der MLAA-Methode von besonderer Bedeutung für die PET/MRT, während eine Beschleunigung der TOF-Streukorrektur gleichermaßen auch für TOF-

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Agenbag, Daniel Sarel. "Longitudinal handling characteristics of a tailless gull-wing aircraft." Diss., 2008. http://hdl.handle.net/2263/28011.

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A handling quality investigation was performed on the swept gull-wing configuration. The swept gull-wing configuration is tailless and has a wing with a transition in the sweep and dihedral angle. An example of this type of aircraft is the Exulans. This aircraft is currently under development at the University of Pretoria. The handling quality study was focussed on pitch axis dynamics. The Exulans is a research testbed that will be used to investigate the swept gull-wing configuration and its special controls by means of full-scale flight testing. Variable wing sweep, twisting elevons and wing

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