Дисертації з теми "Aerospace Engineering - Propulsion"
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Zhu, Dawei. "Supercirculation Aerodynamic-Propulsion Test Rig Instrumentation Development." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1142542776.
Повний текст джерелаGilpin, Matthew R. "High temperature latent heat thermal energy storage to augment solar thermal propulsion for microsatellites." Thesis, University of Southern California, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10160163.
Повний текст джерелаSolar thermal propulsion (STP) offers an unique combination of thrust and efficiency, providing greater total ΔV capability than chemical propulsion systems without the order of magnitude increase in total mission duration associated with electric propulsion. Despite an over 50 year development history, no STP spacecraft has flown to-date as both perceived and actual complexity have overshadowed the potential performance benefit in relation to conventional technologies. The trend in solar thermal research over the past two decades has been towards simplification and miniaturization to overcome this complexity barrier in an effort finally mount an in-flight test.
A review of micro-propulsion technologies recently conducted by the Air Force Research Laboratory (AFRL) has identified solar thermal propulsion as a promising configuration for microsatellite missions requiring a substantial Δ V and recommended further study. A STP system provides performance which cannot be matched by conventional propulsion technologies in the context of the proposed microsatellite ''inspector" requiring rapid delivery of greater than 1500 m/s ΔV. With this mission profile as the target, the development of an effective STP architecture goes beyond incremental improvements and enables a new class of microsatellite missions.
Here, it is proposed that a bi-modal solar thermal propulsion system on a microsatellite platform can provide a greater than 50% increase in Δ V vs. chemical systems while maintaining delivery times measured in days. The realization of a microsatellite scale bi-modal STP system requires the integration of multiple new technologies, and with the exception of high performance thermal energy storage, the long history of STP development has provided "ready" solutions.
For the target bi-modal STP microsatellite, sensible heat thermal energy storage is insufficient and the development of high temperature latent heat thermal energy storage is an enabling technology for the platform. The use of silicon and boron as high temperature latent heat thermal energy storage materials has been in the background of solar thermal research for decades without a substantial investigation. This is despite a broad agreement in the literature about the performance benefits obtainable from a latent heat mechanisms which provides a high energy storage density and quasi-isothermal heat release at high temperature.
In this work, an experimental approach was taken to uncover the practical concerns associated specifically with applying silicon as an energy storage material. A new solar furnace was built and characterized enabling the creation of molten silicon in the laboratory. These tests have demonstrated the basic feasibility of a molten silicon based thermal energy storage system and have highlighted asymmetric heat transfer as well as silicon expansion damage to be the primary engineering concerns for the technology. For cylindrical geometries, it has been shown that reduced fill factors can prevent damage to graphite walled silicon containers at the expense of decreased energy storage density.
Concurrent with experimental testing, a cooling model was written using the "enthalpy method" to calculate the phase change process and predict test section performance. Despite a simplistic phase change model, and experimentally demonstrated complexities of the freezing process, results coincided with experimental data. It is thus possible to capture essential system behaviors of a latent heat thermal energy storage system even with low fidelity freezing kinetics modeling allowing the use of standard tools to obtain reasonable results.
Finally, a technological road map is provided listing extant technological concerns and potential solutions. Improvements in container design and an increased understanding of convective coupling efficiency will ultimately enable both high temperature latent heat thermal energy storage and a new class of high performance bi-modal solar thermal spacecraft.
Eilers, Shannon Dean. "Development of the Multiple Use Plug Hybrid for Nanosats (Muphyn) Miniature Thruster." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1726.
Повний текст джерелаCollie, Wallis Vernon. "Design and Analysis of an Unmanned Aerial Vehicle Propulsion System with Fluidic Flow Control Inside a Highly Compact Serpentine Inlet Duct." NCSU, 2003. http://www.lib.ncsu.edu/theses/available/etd-11282003-145453/.
Повний текст джерелаArmstrong, Isaac W. "Development and Testing of Additively Manufactured Aerospike Nozzles for Small Satellite Propulsion." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7428.
Повний текст джерелаMarklund, Hanna. "Supersonic Retro Propulsion Flight Vehicle Engineering of a Human Mission to Mars." Thesis, Luleå tekniska universitet, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75820.
Повний текст джерелаConnolly, Joseph. "Aero-Propulso-Elastic Analysis of a Supersonic Transport." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543337967878799.
Повний текст джерелаChamberlain, Britany L. "Additively-Manufactured Hybrid Rocket Consumable Structure for CubeSat Propulsion." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7285.
Повний текст джерелаBertuzzi, Alberto. "Microcontroller based flow control for spacecraft electric propulsion." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Знайти повний текст джерелаCheney, Liam Jon. "Development of Safety Standards for CubeSat Propulsion Systems." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1180.
Повний текст джерелаSchoeffler, Lara Elaine. "Orbital Dynamics of Space Nuclear Propulsion Systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1618332162764726.
Повний текст джерелаRamunno, Michael Angelo. "Control Optimization of Turboshaft Engines for a Turbo-electric Distributed Propulsion Aircraft." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587657623577243.
Повний текст джерелаRojas, Sigala Mauro. "Study of Launcher Recovery Systems." Thesis, Luleå tekniska universitet, Rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80722.
Повний текст джерелаAbada, Hashim H. "Turboelectric Distributed Propulsion System for NASA Next Generation Aircraft." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1515501052742277.
Повний текст джерелаChakravarthula, Venkata Adithya. "Transient Analysis of a Solid Oxide Fuel Cell/ Gas Turbine Hybrid System for Distributed Electric Propulsion." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1484651177170392.
Повний текст джерелаBrezina, Aron Jon. "Measurement of Static and Dynamic Performance Characteristics of Electric Propulsion Systems." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1340066274.
Повний текст джерелаUrban, Peter J. "Non-Intrusive Optical Measurement of Electron Temperature in Near Field Plume of Hall Thruster." Cleveland State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=csu1528216243044845.
Повний текст джерелаPansolin, Denis. "An Experimental and Numerical Study of High Temperature Gaseous Flow through an Open Cell Silicon Carbide Foam Heater." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2702.
Повний текст джерелаGrannan, Nicholas D. "Design and Structural Analysis of a Dual Compression Rotor." University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1366644139.
Повний текст джерелаBacciaglia, Antonio. "Design and Development of a Propulsion System for a Water-Air Unmanned Vehicle." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Знайти повний текст джерелаSergent, Aaronn. "Optimal Sizing and Control of Battery Energy Storage Systems for Hybrid-Electric, Distributed-Propulsion Regional Aircraft." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595519141013663.
Повний текст джерелаBelapurkar, Rohit K. "Stability and Performance of Propulsion Control Systems with Distributed Control Architectures and Failures." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1357309068.
Повний текст джерелаHartwig, Jason W. "Liquid Acquisition Devices for Advanced In-Space Cryogenic Propulsion Systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396562473.
Повний текст джерелаWilson, Matthew D. "Catalytic Decomposition of Nitrous Monopropellant for Hybrid Motor Ignition." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1496.
Повний текст джерелаDeans, Matthew Charles. "The Simulation, Development, and Testing of a Staged Catalytic Microtube Ignition System." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1343318716.
Повний текст джерелаGonzalez, Marin Victor Alberto. "Methods to operate and evaluate the performance of a cold-gas CubeSat propulsion system on a magnetically stabilised satellite." Thesis, KTH, Rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-288714.
Повний текст джерелаFramdrivningssystem tillåter satelliter att utföra många funktioner i rymden, som t.ex. att hålla konstant avstånd till en annan rymdfarkost, utlösa återinträde i atmosfären, attitydstyrning, manövrera mellan olika omloppsbanor, och, till och med, interplanetära uppdrag. Framdrivningssystem i satelliter har främjat en ny lovande era av rymdforskning och praktisk tillämpning av rymden, och därför behöver detaljerade, men praktiskt hanterbara, metoder för att operativt använda framdrivningssystem utvecklas. Basen för detta arbete är att beskriva de mest relevanta driftsrutinerna för framdrivningssystemet NanoProp 3U, utvecklat av GomSpace, för användning ombord på MIST-satelliten (en 3U Cubesat) som utvecklats av KTH. Aspekter på NanoProps användning i MIST som förbrukning av elektrisk energi, telemetribehov, drivmedelsmassa, hantering av felfunktioner (upptäckt och avhjälpande) och avveckling av satelliten vid drifttidens slut analyseras i detalj. Dessutom analyserar detta arbete hur detaljerade driftprov kan utföras med NanoProp i syfte att bedöma de prestanda som framdrivningssystemet tillhandahåller och hur dessa prov påverkar och stöds av driften av satellitens övriga delsystem. Det övergripande syftet med detta arbete är således att utveckla en metod för att planera driften av ett framdrivningssystem under ett satellitprojekts definitions- och utvecklingsfaser så att en tydlig förståelse av systemets egenskaper och begränsningar leder till ett säkert och stabilt rymduppdrag.
D'Anniballe, Alessandro. "Development of a sizing tool for preliminary mission analysis and design of propulsion systems for orbit control of small satellites in LEO -VLEO." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14719/.
Повний текст джерелаPlank, Jack R. "Nuclear Thermal Propulsion Cool-Down Phase Optimization Through Quasi-Steady Computational Analysis, and the Effect of Auxiliary Heat Removal Systems." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618934609976051.
Повний текст джерелаScharlemann, Carsten A. "Investigation of thrust mechanisms in a water fed pulsed plasma thruster." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1070354149.
Повний текст джерелаRomano, Federico. "Q1D unsteady ballistic model for solid rocket motors performance prediction." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Знайти повний текст джерелаBodnar, Maxwell J. "The Creation, Analysis, and Verification of a Comprehensive Model of a Micro Ion Thruster." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1565.
Повний текст джерелаBulut, Jane. "Design and CFD analysis of the demonstrator aerospike engine for a small satellite launcher application." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Знайти повний текст джерелаBall, Tyler M. "CFD as Applied to the Design Of Short Takeoff and Landing Vehicles Using Circulation Control." DigitalCommons@CalPoly, 2008. https://digitalcommons.calpoly.edu/theses/50.
Повний текст джерелаMcCrink, Matthew H. "Development of Flight-Test Performance Estimation Techniques for Small Unmanned Aerial Systems." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1449142886.
Повний текст джерелаStaniscia, Giada. "Development of a Low Earth Orbit Mission Preliminary Analysis Tool." Thesis, KTH, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-265613.
Повний текст джерелаMålet med detta examensarbete var att utveckla ett verktyg för missionsanalys för nanosatellitföretaget GomSpace Sweden. Det finns många andra mjukvaror för att nå samma mål men de är ofta komplicerade och tidskrävande. Det specifika målet var således att skapa en enkel applikation som kan användas i de tidiga stegen av utformning av rymduppdrag för att snabbt och enkelt få fram viktiga parametrar. Genom att jämföra resultat, uppskatta genomförbarheten av kundbehov och analysera hur olika parametrar påverkar varandra kan omedelbar förståelse erhållas rörande påverkan av designbeslut som tas i början av rymduppdragen. Verktyget ska stödja systemingenjörsprocessen genom att uppskatta banförflyttningskapacitet för elektriska framdrivningssystem för CubeSats och ta i beaktande de mest relevanta faktorerna gällande störningar i låg jordbana (LEO), i.e. atmosfäriskt motstånd och effekterna av Jordens form. De undersökta manövrarna är: banhöjning från injektionsbana till operationell bana, banunderhåll, bansänkning som följer riktlinjerna för rymdskrot och kollisionsundvikande inom de 12 till 24 timmar som systemet har på sig att reagera. Kostnaden för manövrarna är uppskattade genom DeltaV-krav, massan av bränslet och förflyttningstider. Verktyget utvecklades med MATLAB och paketerades som en fristående applikation i Linux.
Claypool, Ian Randolph. "A theoretical and numerical study of the use of grid embedded axial magnetic fields to reduce charge exchange ion induced grid erosion in electrostatic ion thrusters." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1172690635.
Повний текст джерелаCapatina, Allen A. C. "AXISYMMETRIC BI-PROPELLANT AIR AUGMENTED ROCKET TESTING WITH ANNULAR CAVITY MIXING ENHANCEMENT." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1493.
Повний текст джерелаPersson, Robert. "PPS5000 Thruster Emulator Architecture Development & Hardware Design." Thesis, Luleå tekniska universitet, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72827.
Повний текст джерелаPereira, Roger Michael. "The I2T5 : Enhancement of the Thermal Design of an Iodine Cold Gas Thruster." Thesis, Luleå tekniska universitet, Rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80702.
Повний текст джерелаGirardello, Carlo. "Optical Analysis of Plasma : Flame Emission in Cryogenic Rocket Engines." Thesis, Luleå tekniska universitet, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76097.
Повний текст джерелаDie vorliegende Arbeit präsentiert die Ergebnisse der Abgasstrahlspektroskopie des H2/LOXVulcain 2.1 Triebwerks und der Zündplasma Spektroskopie des CH4/LOX Triebwerks desLUMEN Projektes. Die Abgasstrahlspektroskopie wurde analysiert und im Detail untersuchtum die am besten passende molekulare Zusammensetzung herauszuarbeiten. DasHauptaugenmerk liegt dabei auf dem Hydroxyl- Radikal, der Blauen Strahlung und molekularerIntensitätsanalyse. Bei der Zündplasmaanalyse liegt der Fokus auf der Bestimmungdes LTE Zustands (Lokales thermodynamisches Gleichgewicht) in LIBS. Die Temperaturdes Wasserstoff-, Kohlenstoff und Sauerstoffplasmas wird herangezogen, um die Qualitätdes LTE Zustands zu beurteilen. Für die Testdurchführung wurden Spektrographen, Kamerasund bestimmte Auswertungstools für optische Anwendungen benutzt. Das Verhaltendes Vulcain 2.1 Abgasstrahls abhängig von verschiedenen ROF und Druckstufen ist in denErgebnissen beschrieben. Für das LUMEN Triebwerk konnten erste Zündplasmatemperaturenbestimmt werden und geben einen Rückschluss auf die Qualität des LTE.
Gilles, Paul M. "Performance Enhancement and Characterization of an Electromagnetic Railgun." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2107.
Повний текст джерелаYentsch, Robert J. "Three-Dimensional Shock-Boundary Layer Interactions in Simulations of HIFiRE-1 and HIFiRE-2." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1384195671.
Повний текст джерелаMorrisey, Bryan J. "Multidisciplinary Design Optimization of an Extreme Aspect Ratio HALE UAV." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/113.
Повний текст джерелаBenyo, Theresa L. "Analytical and Computational Investigations of a Magnetohydrodynamic (MHD) Energy-Bypass System for Supersonic Turbojet Engines to Enable Hypersonic Flight." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1369153719.
Повний текст джерелаChoi, Jinbae. "Closed-Loop Optimal Control of Discrete-Time Multiple Model Linear Systems with Unknown Parameters." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1441178373.
Повний текст джерелаKummer, Joseph. "Simulation of the cross-flow fan and application to a propulsive airfoil concept." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2006. http://proquest.umi.com/login?COPT=REJTPTU0NWQmSU5UPTAmVkVSPTI=&clientId=3739.
Повний текст джерелаRhodes, Gregory D. "Experimental Investigations of the Propulsive Fuselage Concept." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523355985000317.
Повний текст джерелаPlewacki, Nicholas. "Modeling High Temperature Deposition in Gas Turbines." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587714424017527.
Повний текст джерелаYezeguelian, Axel. "Modelling and Simulation of a Propulsive Hybridisation for a Light Fixed-wing Aircraft." Thesis, KTH, Flygdynamik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261222.
Повний текст джерелаHybridisering av framdrivningssystem passar in med hållbar utvecklingspolitik av många företag inom transportbranschen. Faktiskt tillåter det antingen att minska bränsleförbrukningen eller att förbättra flygplans prestandorna. Ändå är aktuella batteritekniken fortfarande ett problem för en mer frekvent användning av hybridisering förlättflyget. För det här projektet bekräftas det eftersom kvasistatiska och dynamiska studierna visar att hybridsystemet med aktuella Li/Ion batterierna förbättrar inte flygdurationen. Ändå är det möjligt att ingripa på motorprestandorna genom att återanvända värmeenergin av avgas för att förbättra flygdurationen.
Dlima, Kendrick M. "Conceptual Design of a South Pole Carrier Pigeon UAV." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2145.
Повний текст джерела