Now showing items 11-30 of 36

    • Design and Performance of Odyssey IV: A Deep Ocean Hover-Capable AUV 

      Eskesen, Justin; Owens, Dylan; Soroka, Michael; Morash, Jim; Hover, Franz S.; e.a. (Massachusetts Institute of Technology. Sea Grant College Program, 2009)
      The Odyssey IV class AUV was designed to fill the evolving needs of research and industry for a deep rated (6000 meter) vehicle, which is capable of both efficient cruising and precise hovering. This AUV is powerful enough ...
    • Design of the All-Electric Ship: Focus on Integrated Power System Coupled to Hydrodynamics 

      Prempraneerach, P.; Kirtley, James L., Jr.; Chryssostomidis, Chryssostomos; Triantafyllou, Michael S.; Karniadakis, George E. (Massachusetts Institute of Technology. Sea Grant College Program, 2008)
      We present a detailed model of the integrated power system coupled to hydrodynamics that allows us to study global sensitivities in the All-Electric Ship. A novel element of our formulation is the stochastic modeling of ...
    • Development and application of distributed MEMS pressure sensor array for AUV object avoidance 

      Fernandez, Vicente Ignacio; Hou, Stephen M.; Hover, Franz S.; Lang, Jeffrey H.; Triantafyllou, Michael S. (Massachusetts Institute of Technology. Sea Grant College Program, 2009-07)
      A novel sensory system is being developed for AUVs to augment current sensory systems for navigation and operation in difficult environments. These environments are frequently cluttered and murky with substantial flow from ...
    • Dual Ring Bus Electrical Distribution System for US Navy Destroyer- and Frigate-sized Vessels 

      Cooke, Chathan M.; Chalfant, Julie; Chryssostomidis, Chryssostomos (Massachusetts Institute of Technology. Sea Grant College Program, 2012-12)
      In response to a Request for Information from the Office of Naval Research regarding electrical architectures to be considered in an architecture evaluation study for two candidate hull forms including a 10,000 ton ...
    • Field Demonstration of a Real-time Non-intrusive Monitoring System for Condition-based Maintenance 

      Proper, Ethan; Cox, Robert W.; Leeb, Steven B.; Douglas, Keith; Paris, Jim; e.a. (Massachusetts Institute of Technology. Sea Grant College Program, 2009)
      The performance of important electrical loads on mission critical systems like warships or off-shore platforms is often tracked by dedicated monitoring equipment. Individual monitoring of each load is expensive and risky. ...
    • Geographical Analysis of Ballast Water Data and Potential Threats of Invasive Species for the North Eastern United States 

      Dassuncao, Clifton (Massachusetts Institute of Technology. Sea Grant College Program, 2008-12)
      The globalization of consumer goods and natural resources has led to an unintentional increase in exchanges of native biota (Bright 1999, Barbier and Shogren 2004, Perrings et al. 2005). Organisms that were once constrained ...
    • Gradient-Free Stochastic Sensitivity Analysis of the Shipboard Power System 

      Prempraneerach, P.; Foo, J.; Triantafyllou, Michael S.; Chryssostomidis, Chryssostomos; Karniadakis, George E. (Massachusetts Institute of Technology. Sea Grant College Program, 2008)
      Sensitivity analysis results are useful both for the early design stage – where the parametric space can be substantially reduced – but also in operating conditions, e.g. of the future electric ship, resulting in reduced ...
    • Gulf of Maine Strategic Regional Ocean Science Plan 

      Pederson, Judith (Massachusetts Institute of Technology. Sea Grant College Program, 2009-02)
      The Gulf of Maine Regional Ocean Science Initiative evolved from an awareness of the importance of integrated approaches to addressing ecological, environmental, and social influences in coastal and marine ecosystems at ...
    • Interim Report on S3D/LEAPS Integration 

      Chalfant, Julie; Ferrante, Matthew D.; Noble, James A. (Massachusetts Institute of Technology. Sea Grant College Program, 2014-09)
      The Naval Surface Warfare Center Carderock Division has created the Leading Edge Architecture for Prototyping Systems, or LEAPS, as the data repository for ship design, and a significant number of the early-stage ship ...
    • Lateral-Line Inspired MEMS-Array Pressure Sensing for Passive Underwater Navigation 

      Fernandez, Vicente Ignacio; Hou, Stephen M.; Hover, Franz S.; Lang, Jeffrey H.; Triantafyllou, Michael S. (Massachusetts Institute of Technology. Sea Grant College Program, 2007-07)
      This paper presents work toward the development of a novel MEMS sensing technology for AUVs. The proposed lateral line-inspired sensor system is a high-density array of pressure sensors for measuring hydrodynamic disturbances. ...
    • Linearized Hovering Control With One or More Azimuthing Thrusters 

      Hover, Franz S. (Massachusetts Institute of Technology. Sea Grant College Program, 2007)
      We propose a simple method of control system design for marine vehicles with one or more azimuthing propulsors, and specifically for the case where the speed of the actuator is on the same time scale as the plant dynamic ...
    • Marine Introduced Species Q13: Are threats from marine invasive species increasing in Massachusetts and Cape Cod Bays? 

      Pappal, Adrienne; Smith, Jan; Pederson, Judith (Massachusetts Institute of Technology. Sea Grant College Program, 2010)
      Non-native species have emerged as one of the leading environmental threats to our coastal habitats. These species have been recognized globally as a major threat to biological diversity as well as to agriculture and other ...
    • Marine Invaders in the Northeast: Rapid Assessment Survey of Non-native and Native Marine Species of Floating Dock Communities, August 2003 

      Pederson, Judith; Bullock, Robert; Carlton, James; Dijkstra, Jennifer; Dobroski, Nicole; e.a. (Massachusetts Institute of Technology. Sea Grant College Program, 2005)
      In his seminal book on The Ecology of Invasions by Animals and Plants, Elton (1958) laid the foundation for the science of biological invasions. He identified the importance of human-mediated vectors as means of transporting ...
    • MOOS-IvP Autonomy Tools Users Manual - Release 4.2.1 

      Benjamin, Michael Richard (Massachusetts Institute of Technology. Sea Grant College Program, 2011-07)
      This document describes 19 MOOS-IvP autonomy tools. uHelmScope provides a run-time scoping window into the state of an active IvP Helm executing its mission. pMarineViewer is a geo-based GUI tool for rendering marine ...
    • Optimization of Lithium Iron Phosphate Battery Charging and Performance 

      Misic, Aleksandar (Massachusetts Institute of Technology. Sea Grant College Program, 2014-09)
      The goal of this project is to efficiently and safely charge a 5kWh battery pack in 15 minutes. Since the project is still in progress, this report describes experiments on a 56Wh battery. Experiments were performed to ...
    • An Overview of MOOS-IvP and a Users Guide to the IvP Helm - Release 4.2.1 

      Benjamin, Michael Richard; Schmidt, Henrik; Newman, Paul; Leonard, John Joseph (Massachusetts Institute of Technology. Sea Grant College Program, 2011-08)
      This document describes the IvP Helm - an Open Source behavior-based autonomy application for unmanned vehicles. IvP is short for interval programming - a technique for representing and solving multi-objective optimizations ...
    • Parametric Optimization of S-type Cables 

      Babaee, Hessam (Massachusetts Institute of Technology. Sea Grant College Program, 2014)
      We formulated an S-curve parameterization for re-routing a cable path for a given offset displacement. In our approach we assume the cable path to follow a tangent hyperbolic curve. In our formulation, after taking the ...
    • Planning for the Future: Climate Adaptation in Hazard Mitigation Plans and Comprehensive Water Resource Management Plans 

      Bailey, Gregory; Baril, Jacob A.; Bellini, Jonas A. (Massachusetts Institute of Technology. Sea Grant College Program, 2012-03)
      This project investigated whether hazard mitigation plans (HMPs) and comprehensive water resource management plans (CWRMPs) completed by cities and towns in Massachusetts account for the long term effects of climate change. ...
    • Reconfigurable Modem for Ocean Observatories 

      Sozer, Ethem Mutlu (Massachusetts Institute of Technology. Sea Grant College Program, 2005)
      Acoustic communications is an important part of underwater research. The mass amount of data collected by sub-sea devices can be made available to the scientific community in real-time with the utilization of acoustic modems.
    • Scalability of Non-intrusive Load Monitoring for Shipboard Applications 

      Paris, James; Remscrim, Zachary N.; Douglas, Keith; Leeb, Steven B.; Cox, Robert W.; e.a. (Massachusetts Institute of Technology. Sea Grant College Program, 2009)
      The non-intrusive load monitor has been demonstrated as an effective tool for evaluating and monitoring shipboard electro-mechanical systems through analysis of electrical power data. A key advantage of the non-intrusive ...