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Bragg reflector geometries for colorimetric orientation and deformation sensing
(Massachusetts Institute of Technology, 2016)
Propulsion systems of commercial and naval ships are typically large and expensive. They must be kept well-aligned and free of corrosion to efficiently and reliably transfer torque to a ship's propeller. Early identification ...
Object localization and identification for autonomous operation of surface marine vehicles
(Massachusetts Institute of Technology, 2016)
A method for autonomous navigation of surface marine vehicles is developed A camera video stream is utilized as input to achieve object localization and identification by application of state-of-the-art Machine Learning ...
Time-optimal multi-waypoint mission planning in dynamic flow fields
(Massachusetts Institute of Technology, 2018)
This thesis demonstrates the use of exact equations to predict time-optimal mission plans for a marine vehicle that visits a number of locations in a given dynamic ocean current field. The missions demonstrated begin and ...
Incorporating contact management and marine dynamics in decentralized auction bidding for autonomous surface vehicles
(Massachusetts Institute of Technology, 2020)
This research studies techniques that can be applied to practical multi-task multi-vessel marine applications to manage mission planning for autonomous surface vehicles (ASVs). This thesis investigated the use of a ...
Design and numerical analysis of an unconventional surface-piercing propeller for improved performance at low and high speeds
(Massachusetts Institute of Technology, 2017)
Traditional propellers operate fully submerged, with cavitation limited as much as possible in order to minimize its disruptive and damaging consequences. Conversely, supercavitating propellers operate in an encompassing ...
Multi-attribute tradespace exploration for US Navy surface ship survivability: a framework for balancing capability, survivability, and affordability
(Massachusetts Institute of Technology, 2016)
In a political environment of austerity, the importance of understanding the design tradeoffs for new naval ship concept designs cannot be understated. A combination of a tightened shipbuilding budget, large high-priority ...
Design and testing of a pan-tilt mechanism for severe environments
(Massachusetts Institute of Technology, 2016)
U.S. Navy ships have non-rotating radar and electronic warfare devices installed, which are often supported and trained by two-axis gimbals. In current shipboard solutions the payloads are often placed on a platform above ...
Multipath arrival tracking for marine vehicles utilizing pattern recognition
(Massachusetts Institute of Technology, 2018)
In recent years, interest in the Arctic Region has been steadily growing as it has become more accessible due to continued ice recession. This increased accessibility opens up the possibility for nations to take advantage ...
Design, construction, and analysis of a modular ship model and open-source autonomous surface vehicle
(Massachusetts Institute of Technology, 2020)
Existing models used to explore hydrostatic, hydrodynamic, seakeeping, and maneuvering characteristics of ships are limited in that their characteristics are essentially static. The effects of various hull appendages, ...
The design, feasibility and cost analysis of sea barrier systems in Norfolk, Virginia and the comparative cost of shoreline barriers
(Massachusetts Institute of Technology, 2020)
Protecting a coastline from the damage of a storm surge, or tidal flooding associated with sea level rise, is a challenging and costly engineering endeavor. Low lying properties located directly on an ocean coastline are ...