Theses and Dissertations
Effects of positional information time lags on motion stability of autonomous vehicles.
(Monterey, California. Naval Postgraduate School, 1992-09)
Highly maneuverable ocean going vehicles require quick response, control, and
guidance to maintain accurate track keeping characteristics. Ocean vehicles, however, may
experience significant lags in their inertial ...
Sensitivity analysis of transient and steady state characteristics of surface ship progressive flooding
(Monterey, California. Naval Postgraduate School, 1999-09)
The Navy's primary analysis of damage control and stability to date has been under static conditions. Dynamic effects, such as progressive flooding, and the dynamic damage control procedures, such as hole patching and ...
A methodology for design of passive isolation for ship/barge connection
(Monterey, California. Naval Postgraduate School, 1999-09-01)
Current ramp designs used in RORO operations have been determined to be structurally inadequate in Sea-State 3. The main reason for this is that when the ramp is loaded with two vehicles, the relative motions between the ...
Improved computer modeling of ship progressive flooding as a design tool
(Monterey, California. Naval Postgraduate School, 1998-09-01)
When a ship suffers underwater damage, there is a rapid influx of water, followed by a period of slower progressive flooding. This results in flooding of compartments whose hull boundaries, but not interior bulkheads, are ...
Bias effects on motion stability of submersible vehicles
(Monterey, California. Naval Postgraduate School, 1998-09)
This thesis analyzes the nonlinear characteristics of motion stability of a submersible vehicle in combined sway, yaw, and roll motions. Previous results, at zero pitch angles, indicate that limit cycles are generated as ...
Random wave analysis of Ship/Ramp/Barge response
(Monterey, California. Naval Postgraduate School, 2000-09)
A mathematical model describing the fundamental physics of a ship/ ramp/barge system, including a passive isolator, is developed. The model properly accounts for hydrodynamic proximity effects and structural coupling between ...
Nonlinear dynamics of close proximity ship towing
(Monterey California. Naval Postgraduate School, 2002-12)
The goal of this study is to investigate the nonlinear dynamics of two ships in close proximity towing. The sway and yaw dynamics of both the leading and the trailing ships were included in the formulation. Previous studies ...
Initial studies of structure coupling effects for a trolley/RRDF interface
(Monterey, California. Naval Postgraduate School, 2003-03)
The purpose of this thesis is to lay the foundation for analyzing structural coupling effects for a proposed trolley interface between a ship and a roll-on roll-off discharge facility (RRDF). Such a facility could allow ...
A coupled hydrodynamic/structural model for ship/ramp/barge interface
(Monterey, California. Naval Postgraduate School, 2001-12)
A mathematical model describing the fundamental dynamics in the interface problem between a ship, a barge, and a connecting ramp is developed and solved. The hydrodynamics for the ship and the barge are described by a ...
Effects of short crested seas on the motions of a trolley interface for ship-to-ship cargo transfer
(Monterey, California. Naval Postgraduate School, 2003-03)
This thesis sets out to explore the effects on the dynamic response of a hybrid trolley system employed in ship to shore cargo transfer operating in a realistic short crested irregular seaway. Compared to the uni-directional ...
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Papoulias, Fotis A. (62)
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Mechanical Engineering (62)