Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Sea trials"”.
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ΣΥΣΤΗΜΑΤΑ ΔΙΑΓΝΩΣΗΣ ΛΕΙΤΟΥΡΓΙΑΣ ΣΕ ΝΑΥΤΙΚΕΣ ΜΗΧΑΝΕΣ DIESEL
… THE REFERENCE ENGINE CONDITION ON SHOP OR SEA TRIALS WITH A SPECIAL DEVELOPED ALGORITHM NAMED "STEP BY STEP APPROACHING DIESEL ENGINE OPERATIONAL MODEL". THE DIAGNOSTIC METHOD IS APPLIED ON A CERTAIN ENGINE AS FOLLOWS: A) ON SHOP/SEA TRIALS RESULTS OF THE ENGINE UNDER NON FAULT CONDITION. …
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Development of an optical fibre array fluorosensor for monitoring in the aqueous environment.
… were also fully investigated before a series of sea trials were conducted. These sea trials involved the deployment of the optical fibre probe/s under various conditions. The system was found to have a detection limit of 0.1 mu g/l for marine phytoplankton in realtime. Using dye tracers in …
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Simulation and Testing of Wave-Adaptive Modular Vessels
… the passengers and equipment from the harsh sea environment. Enhanced understanding of the relationship between suspension and vehicle performance is critical for future missions of interest to the U.S. Navy. Throughout this study, the dynamic properties of three different WAM-Vs were …
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Evaluation of Wave-Adaptive Modular Vessel Suspension Systems for Improved Dynamics
… to better fit the needs of the 33ft WAM-V. Sea trials are conducted with both suspension systems at the Combatant Craft Division (CCD), a division of the Naval Surface Warfare Center, Carderock Division (NSWCCD), in Norfolk, VA to quantitatively and qualitatively determine the differences …
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The Flying Fish, an untethered oceanographic sensor platform with acoustic homing capability
… demonstrates proof-of-concept with a series of sea trials. Some recommendations are made for future refinements.
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Measurements of sub-surface bubble populations and the modelling of air-sea gas flux
… the flux of gases during periods of heightened sea state. Having been<br/>formed, these bubble clouds evolve through the effects of buoyancy, gas exsolution and dissolution, and the fragmentation and coalescence of bubbles.<br/>A number of experimenters have successfully measured sub-surface …
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Ship design with the human factor: evacuation and normal operations modelling in the ship design process
… time distribution is based upon the results of sea trials. The results of this analysis have been adopted by the IMO and form part of the new guideline document, IMO MSC 1238. In addition, this thesis addresses the analysis of the human factors’ performance of a naval vessel. Naval vessels are …
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Characteristics of the wave energy resource at the Atlantic marine energy test site
… Energy Test Site, a facility for conducting sea trials of floating wave energy converters that is being developed near Belmullet, on the west coast of Ireland. This characterisation process is undertaken through the analysis of metocean datasets that have previously been unavailable for …
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An electronically focused multiple beam side scan sonar
… predicted with theory and computer simulation. Sea trials confirm that resolution close to that predicted may be obtained under operational circumstances. The results obtained fully justify the assertion that low cost microprocessor controlled dynamically focused multiple beam phased arrays are …
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Reducing mechanical and flow-induced noise in the surface suspended acoustic receiver
… generated on the SSAR. Through a program of sea trials and pond testing, two noise sources were identified. The dominant source of noise in the SSAR is velocity dependent flow noise that results from turbulent pressure fluctuations on the hydrophones. A second noise source results from the …
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Enabling robotic manipulation in remote environments with shared autonomy
… study in remote environments, enabling research in areas that were previously impossible to reach. Robots operating in space and marine environments encounter similar operational challenges, as both face high operational costs, bandwidth-limited conditions, and natural, unstructured …
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Enabling Robotic Manipulation in Remote Environments with Shared Autonomy
… study in remote environments, enabling research in areas that were previously impossible to reach. Robots operating in space and marine environments encounter similar operational challenges, as both face high operational costs, bandwidth-limited conditions, and natural, unstructured …
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A Mathematical Model To Simulate Small Boat Behaviour
… performance of an autopilot arising from such sea induced yaw motions can be assessed with a view to improving the control algorithms and methodology. The traditional "regressional" style models used for large ships are not suitable for a small boat model since there exist numerous small boat …
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Scale effects in testing of a monopile support structure submerged in tidal currents.
… is influenced by waves, channel sidewalls, seabed roughness and other natural, physical and biological processes occurring in the estuary. The following observations were made: 1) For the DSE, the drag coefficient of scale models within the subcritical flow regime varies as a function of a …
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Understanding and mitigating seabird bycatch in the South African pelagic longline fishery
Seabirds are considered one of the most threatened groups of birds in the world. They face additional mortality both on their breeding islands from introduced predators and at sea by fishing fleets, as fisheries bycatch, as well as other human impacts. Seabird bycatch has negatively affected many …