Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Technology demonstration"”.
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Technology Demonstration of a Megawatt-Class Integrated Motor Drive for Aircraft Propulsion
… electric machine specific power with current technology across a range of power levels from 100 kW to 3.6 MW. A fully air-cooled 1 MW integrated motor drive is developed to demonstrate the viability of the identified architectures and technologies. The motor drive is estimated to have electric …
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Tunneling Field-Effect Transistors for Low Power Logic: Design, Simulation and Technology Demonstration
… a low supply voltage VDD. However, current TFET technology is still under development, and most reported TFETs suffer from low current. This dissertation focuses on development of TFET technology. The gate capacitance of TFET was studied in details. Novel structure, double-gate (DG) TFET with …
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A Risk- and Fuzzy Set-Based Methodology for Advanced Concept Technology Demonstration Military Utility Assessment Design
… U.S. Department of Defense Advanced Concept Technology Demonstration (ACTD) and derivative, rapid acquisition programs offer timely solutions to critical military needs by assessing the utility of technologies mature enough to be fielded without application of traditional, defense system …
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A methodological approach for conducting a Business Case Analysis for the Advanced Technology Ordnance Surveillance (ATOS) Advanced Concept Technology Demonstration (ACTD)
… a Business Case Analysis (BCA) for the Advanced Technology Ordnance Surveillance (ATOS) Advanced Concept Technology Demonstration (ACTD). This study compares the cost savings over time of having an ATOS infrastructure in place at Navy Munitions Management locations compared to the base case of …
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Polymer Chemistry for Improved Self -Healing Composite Materials
… made to this original material. An improved technology is described which protects and delivers the catalyst within wax microspheres. This technique leads to greatly reduced required loadings of catalyst. Faster polymerizations occur when the original endo-dicyclopentadiene is replaced with …
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Small Satellite Closed Ecosystems as Enabling Platforms for Low-Cost In-Space Biological Research
… typically been Earth observation, communication, technology demonstration, or education. Very few CubeSats are launched with biological research payloads, which are typically hosted on larger spacecraft due to the size, weight, and power (SWaP) requirements of these experiments. A closed …
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Constrained H̳₂ design via convex optimization with applications
… isolation system for a spaceborne optical technology demonstration test stand. Mixed specifications are successfully incorporated into the design and the results are verified with experimental frequency data.
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MIT/DRAPER Technology Development Partnership Program : systems, aerodeceleration, and structural design of a high-G, rapid response, deployable autonomous aerial surveillance vehicle
The MIT/Draper Technology Development Partnership Project is a two year initiative between MIT's Department of Aeronautics and Astronautics and Draper Laboratory (the funding customer) to develop an innovative, first-of-a-kind system. Through in-depth market research. concept generation. and …
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Command and Data Handling-Driven Spacecraft Operations Using Hardware-in-the-Loop Simulation
… a cost-effective platform for space research and technology demonstration, but mission success remains highly dependent on reliable command execution, telemetry handing, and subsystem coordination. Traditional satellite evaluation methods often emphasize isolated subsystem validation or …
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Attitude and formation control design and system simulation for a three-satellite CubeSat mission
… has been identified as a critical enabling technology for achieving many scientific, commercial, and military objectives. One of the primary challenges of a formation flight mission is the control of the relative motion between spacecraft. Before any flagship missions will launch, technology …
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Mission-Integrated Synthesis/Design Optimization of Aerospace Subsystems under Transient Conditions
… Lab (AFRL) and other Integrated Vehicle Energy Technology Demonstration (INVENT) contributors into a cohesive, adaptable, dynamic aircraft simulation program in Mathworks' Simulink®. The resulting model known as the "Tip-to-tail" model meets the design specifications set forth by the INVENT …
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MOBILE, HYBRID COMPTON/CODED APERTURE IMAGING FOR DETECTION, IDENTIFICATION AND LOCALIZATION OF GAMMA-RAY SOURCES AT STAND-OFF DISTANCES
… detection system (SORDS) program is an advanced technology demonstration (ATD) project through the Domestic Nuclear Detection Office (DNDO) with the goal of detection, identification and localization of weak radiological sources in the presence of large dynamic backgrounds. The Raytheon-Tri-Modal …
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A performance-driven experiment framework for space technology development using the International Space Station
… test facility for evaluating enabling technology. The operational execution of the SPHERES facility has resulted in the development of best practices for working with experiments in the operational space environment that can be continually refined through successive generations of …
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Advanced Prototypes of the Aerosol Limb Imager
… The first ALI prototype presented is a technology demonstration aimed at validating the performance of state-of-the-art optical technologies on a high-altitude balloon observatory. The instrument pairs an extended range acousto-optic tunable filter with a liquid crystal polarization …
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Modeling the Transient Effects of High Energy Subsystems on High-Performance Aerospace Systems
As directed energy technology continues to evolve and become a viable weapon alternative, a need exists to investigate the impacts of these applications without a "plug-and-check" method, but rather with an analysis governed by fundamental principles. This thesis examines the transient thermal …
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Strategies for climate change mitigation: policy and technological considerations
… a similar policy or the deployment of abatement technology in foreign juris- dictions. The evidence suggests that technology demonstration and learning from past policy experience positively affect (domestic) policy developments. The last chapter focuses on the identification of (GHG-abating) …
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Designing a Localized Lower Body Negative Pressure Garment for Long-Duration Spaceflight
… The human thigh was chosen as the focus of this technology demonstration due to its known responsiveness to LBNP and its suitability for small-scale implementation. The development of the S.K.I.N. began with finite element modeling (FEM) to identify optimal material properties and structural …
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Electrospray Thrusters in Chemical-Electric Multimode Propulsion for Small Satellites
… in a multimode system. To support an upcoming technology demonstration flight, a new multimode-compatible iEPS thruster tank is designed, fabricated, and validated. The integration and operation requirements for this thruster in a flight-ready system are defined. Finally, the mission benefits …
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Deep-Space Exploration Enabled by CubeSats with Staged Electrospray Propulsion
… experiment, CubeSats have grown to a popular technology development platform and a capable tool for scientific missions. Deep-space CubeSats have been limited to rideshare launches thus far, acting as companions to enhance large missions or using propulsion to reach science orbits near the …
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FRAMEWORK FOR CUBESATS MISSION MANAGEMENT, DESIGN, AND OPTIMIZATION
… EXCITE and IONSAT. EXCITE is a 12U CubeSat technology demonstration mission led by the University of Pisa, with the Author acting as systems engineer and technical responsible, that aims to test five payload technologies in orbit. As of writing, the mission has completed Phase A. The work on …