Browsing Aeronautics and Astronautics - Ph.D. / Sc.D. by Title
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Browsing Aeronautics and Astronautics - Ph.D. / Sc.D. by Title
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(Massachusetts Institute of Technology, 2006)One of the major challenges encountered for the successful operation of high-power-density micro-devices lies in the stable operation of the bearings supporting the high-speed rotating machinery. This thesis presents the ...
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(Massachusetts Institute of Technology, 2007)Traditionally, Mars rover missions have been conceived with a single point design approach, exploring a limited architectural trade space. The design of future missions must resolve a conflict between increasingly ambitious ...
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(Massachusetts Institute of Technology, 2005)An ElectroQuasiStatic (EQS) induction machine has been fabricated and has generated net electric power. A maximum power output of 192 [mu]W at 235 krpm has been measured under driven excitation of the six phases. Self ...
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(Massachusetts Institute of Technology, 2011)Combustion engines emit precursors of ne particulate matter (PM) into the atmosphere. Numerous gaseous species, soot particles, and liquid aerosols in the aircraft exhaust are involved in PM formation, and these very ne, ...
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(Massachusetts Institute of Technology, 1973)
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(Massachusetts Institute of Technology, 1963)
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(Massachusetts Institute of Technology, 2008)Cognitive complexity is a limiting factor on the capacity and efficiency of the Air Traffic Control (ATC) system. A multi-faceted cognitive ethnography approach shows that structure, defined as the physical and informational ...
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(Massachusetts Institute of Technology, 2002)In recognition of the growing consideration of piezoelectric traveling-wave motors as suitable replacements for small-scale electromagnetic motors, the present work addresses two parallel objectives: (1) to develop an ...
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(Massachusetts Institute of Technology, 2007)In this thesis, we study a novel hierarchical wireless networking approach in which some of the nodes are more capable than others. In such networks, the more capable nodes can serve as Mobile Backbone Nodes and provide a ...
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(Massachusetts Institute of Technology, 2008)One of the major challenges in autonomous planning and sequencing is the theoretical complexity of planning problems. Even a simple STRIPS planning problem is PSPACEcomplete, and depending on the expressivity of the planning ...
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(Massachusetts Institute of Technology, 2007)Most model reduction techniques employ a projection framework that utilizes a reduced-space basis. The basis is usually formed as the span of a set of solutions of the large-scale system, which are computed for selected ...
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(Massachusetts Institute of Technology, 1994)
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(Massachusetts Institute of Technology, 1999)
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(Massachusetts Institute of Technology, 2007)Aircraft noise is a significant concern to communities near airports, and therefore a constraint to the growth of aviation. Advanced noise abatement approach and arrival procedures have been shown in previous studies and ...
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Modeling and sensitivity analysis of aircraft geometry for multidisciplinary optimization problems (Massachusetts Institute of Technology, 2012)A new geometry management paradigm for aircraft design utilizes Computer Aided Design (CAD) systems as the source for consistent geometry models across design phases and analysis tools. Yet various challenges inhibit the ...
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(Massachusetts Institute of Technology, 2005)(cont.) fuel burn results below 3000 ft. For emissions, the emissions indices were the most influential uncertainties for the variance in model outputs. By employing the model, this thesis examined three policy options for ...
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(Massachusetts Institute of Technology, 1991)
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(Massachusetts Institute of Technology, 2007)In daily life, animals including humans make a wide repertoire of limb movements effortlessly without consciously thinking about joint trajectories or muscle contractions. These movements are the outcome of a series of ...
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(Massachusetts Institute of Technology, 2009)Given advanced technology that relieves the human operator of low-level tasking and the future vision for network-centric operations, operator supervisory control of Unmanned Vehicle (UV) teams is likely to be a focal point ...
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(Massachusetts Institute of Technology, 1998)
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