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Analysis of consistently poor work estimates in U.S. submarine availabilities
(Massachusetts Institute of Technology, 2018)
The maintenance of a warship requires an involved combination of scheduling, funding, and execution. For one finite maintenance period, known as an "availability," a small setback in one of these areas can have a significant ...
An automatic, multi-fidelity framework for optimizing the performance of super-cavitating hydrofoils using Gaussian process regression and Bayesian optimization
(Massachusetts Institute of Technology, 2018)
Computer automated design of complex physical systems is often limited by the computational resources required for the high precision solvers. Determining an optimum design necessitates high accuracy simulations due to the ...
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 ...
Risk-based treatment of uncertainty in trade space exploration : application via Monte Carlo simulation on a manned, mini-submersible model
(Massachusetts Institute of Technology, 2018)
In design, modeling and simulation are commonly used to answer questions of interest as it is both inefficient and expensive to physically build and evaluate numerous possibilities. Any modeling effort aims to build the ...
Engineering a human Factors analysis of a novel one Atmosphere Diving Suit (ADS) elbow joint
(Massachusetts Institute of Technology, 2018)
An Atmospheric Diving Suit (ADS) is a one person anthropomorphic submersible which is used to facilitate undersea work while keeping the diver/operator at atmospheric pressure thus removing them from the harmful physiological ...
Next generation probabilistic prediction model for submarine propulsion shaft life
(Massachusetts Institute of Technology, 2018)
With the development of the U.S. Navy's new COLUMBIA class ballistic missile submarine, the Navy plans to implement a new, longer operational inspection interval for the propulsion shaft system, attempting to double the ...
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 ...
Combined tensile-compressive biaxial loading of Li-ion battery components
(Massachusetts Institute of Technology, 2018)
Lithium-ion batteries under a mechanical load can develop failures in the internal multi-layer structure. Due to the flammable materials required for construction, the safety of the battery has been in question since it ...
Enabling tactical autonomy for unmanned surface vehicles in defensive swarm engagements
(Massachusetts Institute of Technology, 2018)
This research incorporates practical applications of marine vehicles with robotics control theory to reduce the vulnerability of allied assets to asymmetric warfare. This work utilizes distributed decentralized multi-objective ...