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Cost prediction via quantitative analysis of complexity in U.S. Navy shipbuilding
(Massachusetts Institute of Technology, 2014)
As the sophistication and technology of ships increases, U.S. Navy shipbuilding must be an effective and cost-efficient acquirer of technology-dense one-of-a-kind ships all while meeting significant cost and schedule ...
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 ...
Quantification of extreme event statistics in ship design
(Massachusetts Institute of Technology, 2019)
Increased operational demands on Navy vessels extend time at sea and service life, making the accurate prediction of catastrophic failures increasingly challenging. The high value of these capital assets puts great pressure ...
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 and testing of an autonomous mothership for surface vehicle swarm docking
(Massachusetts Institute of Technology, 2019)
The field of marine autonomous systems has blossomed over the past several decades yet much remains to be explored. One important focus area gaining increased attention in this domain is the understanding and development ...