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136
The Victory sail
, 1805
"... ABSTRACT Marine textiles form a vital part of our cultural heritage. Some extant sails and surviving sail fragments in museum collections are hundreds of years old. The Victory sail, from the early 19th century, was not only subject to the ravages of the marine environment during its working life bu ..."
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of the hierarchy, fibre bundles are spun together as yarns, which in turn form the weave structure of the cloth. To assess the current state of these fibres, physical properties of yarns from the Victory sail and appropriate surrogate materials were determined. Additional destructive tests on surrogates suggested
Mathematical Theory of Sailing
, 2009
"... We show by computational solution of the incompressible Navier-Stokes equations with friction force boundary conditions, that the classical inviscid circulation theory by Kutta-Zhukovsky for lift and laminar viscous boundary layer theory by Prandtl for drag, which have dominated 20th century fluid d ..."
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. The new theory opens the possibility of ab initio computational prediction of characteristics of a sailing boat using les than a million meshpoints without resolving thin boundary layers, instead of the imposssible quadrillions required according to state-of-the-art for boundary layer resolution. 1 New
Optimal Sailing Routes with Uncertain Weather
, 2000
"... We consider the problem of finding a route that minimises the expected sailing time between two points on the ocean under uncertain weather conditions. This has applications in long distance offshore yacht racing. The uncertainty in the weather is modelled by a branching scenario tree that captures ..."
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We consider the problem of finding a route that minimises the expected sailing time between two points on the ocean under uncertain weather conditions. This has applications in long distance offshore yacht racing. The uncertainty in the weather is modelled by a branching scenario tree that captures
Optimal Sailing Routes with Uncertain Weather
, 2000
"... We consider the problem of finding a route that minimises the expected sailing time between two points on the ocean under uncertain weather conditions. This has applications in long distance offshore yacht racing. The uncertainty in the weather is modelled by a branching scenario tree that captures ..."
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We consider the problem of finding a route that minimises the expected sailing time between two points on the ocean under uncertain weather conditions. This has applications in long distance offshore yacht racing. The uncertainty in the weather is modelled by a branching scenario tree that captures
Roof rat invasion of an urban desert island
"... Roof rats (Rattus rattus) first arrived in the contiguous United States on sailing vessels along with early explorers and colonists (Lowery 1974). Their distribution had expanded considerably along routes of commerce by the ..."
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Roof rats (Rattus rattus) first arrived in the contiguous United States on sailing vessels along with early explorers and colonists (Lowery 1974). Their distribution had expanded considerably along routes of commerce by the
Sailing on Troubled Waters: Diversional Therapy in Australia
"... This paper seeks to explore the notion of Therapeutic Recreation (TR) in an Australian context. It does so through first reviewing the historical development of Diversional Therapy (DT) services in Australia and then examining the impact on service delivery of ongoing national reform in the health a ..."
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and community care sectors. The paper suggests that such reforms have created a somewhat fluid state of affairs whereby DT staff need decide whether or not they effectively embrace change and the challenges that such reforms have brought, or accept a substantially lesser role in the overall scheme of Australian
A biologically inspired approach to long term autonomy and survival in sailing robots
- in in proceedings of the International Robotic Sailing Conference, May 23rd-24th 2008, Breitenbrunn
, 2008
"... Biologically inspired approaches have long been touted as a possible mechanism to improve the survival of robots operating autonomously in harsh environments. One method which has often been suggested is to mimic the endocrine system which is responsible for the modulation of a series of behaviours. ..."
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and task allo-cation within a sailing robot, helping it to main-tain a steady state and continue operating au-tonomously for longer periods of time. This pa-per outlines the method for a simple test of this technique involving feedback of actuator temper-ature and a simple circadian rhythm on a small
The Doppler Factor and Quantum Electrodynamics Basics in Laser-Driven Light Sailing
"... Basic concepts in Quantum Electrodynamics (QED) and the doppler factor were applied to laser-driven light sailing, where this combination was not considered before. QED indicates that a reflection is an absorption and an emission of discreet energy, and the doppler factor indicates a change in veloc ..."
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in velocity of a reflector would result in the reflector observing a change in wavelength from a source. Applying these concepts results in the reflectors available discrete energy states not being filled, after the reflector changes its velocity. Changes in the apparatus of the laser-driven light sail
A Systems Engineering Approach to the Development of an Autonomous Sailing Vessel
"... Abstract Over the past four years, undergraduate students in the Systems Engi-neering degree program at the United States Naval Academy (USNA) have pur-sued autonomous sailboat systems development as part of their required capstone project in conjunction with students from the Naval Architecture pro ..."
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Abstract Over the past four years, undergraduate students in the Systems Engi-neering degree program at the United States Naval Academy (USNA) have pur-sued autonomous sailboat systems development as part of their required capstone project in conjunction with students from the Naval Architecture
Results 1 - 10
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136
