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 8 of 8 for “"Rudders"”.
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A theoretical and experimental investigation of the performance of flapped rudders
Thesis (Nav. Arch)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1974.
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An experimental analysis of the hydrodynamic characteristics of the monoform: a novel hull form
… at speeds up to three meters per second. The rudders were held straight during one part of the study and were deflected during another to test both their ability to correct for pitching moment and to create yaw moments. The draft of the model was also varied during this study and included …
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Hydrodynamic effects of leading-edge tubercles on control surfaces and in flapping foil propulsion
… to conventional control surfaces--such as rudders or dive planes--found on marine vehicles. The second study uses a dynamic foil, with application to flapping foil propulsion. The lift and drag characteristics of foils with and without tubercles are compared using force measurements from …
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Programmable surfaces
… by propellers, lifted by wings, and steered by rudders. All of these systems share the common character of momentum transport across their surfaces. These existing approaches rely on bulk response among the fluids and solids. They are often not finely controllable and complex approaches suffer …
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Maritime Iconography at Punic Votive Sites at Carthage and Cirta: An Analysis of Watercraft Imagery from the 4th-1st c. BCE
… of iconography: ships (or partial ships), rudders, and anchors. These iconographical elements vary across the corpus, for example, the first category includes images of bows, sterns, or full ships. This study analyzes the maritime symbols, but also examines the stelae according to what …
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Shared values as organising principles in complexity
… during change, can be effective and meaningful rudders for direction and adaptation if they are shared among members of the organisation and successfully influence decision-making and behaviour.
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Numerical simulation of unsteady rotor/stator interaction and application to propeller/rudder combination
In this thesis, a numerical approach based on a potential flow method has been developed in order to simulate unsteady rotor/stator interaction, and to predict the unsteady performance of a propeller and its rudder. The method is first developed and tested in two-dimensions by using a boundary …