We describe some applications of mathematical optimization techniques to yacht performance analysis. Applications include sail trim optimization in wind tunnels, match race modelling under uncertainty, and America’s Cup design optimization under uncertain weather conditions.

Published articles have been reprinted with the permission of the copyright holders. To my family, Konny, Daniel and Emma, and my parents Georg and Margareta The sailor doesn´t ask for tailwind , he learns how to sail

Abstract The aim of this research is to quantify the membrane deformations and their impact on performance for a ribbed wing sail. A 1m x 0.8m rectangular planform NACA0012 foil was designed replicate single section wing-sail. Two foils were manufactured based geometry, one out solid foam using rib structure. These tested in R.J. Mitchell closed return 3.6 m 2.5 wind tunnel at University Southa...

Sail-assisted technology can reduce greenhouse-gas emissions by saving the energy consumption of ships with wind utilization. The distribution characteristics marine resources are critical to energy-saving effect sail-assisted ships. However, due lack effective evaluation methods for improving utilization rate energy, a high potential still exists. A novel method based on resource analysis typi...

The NASA In-Space Propulsion program is funding development work for solar sails to enhance future scientific opportunities. Key to this effort are solar sail scientific roadmap missions identified by peer review. Two near-term missions of interest are L1 Diamond and Solar Polar Imager. Additionally, the New Millennium Program is sponsoring the Space Technology 9 (ST9) demonstration mission. So...

vessel in that fleet can sail. The measure of the strength of a defence is found in its weakest point. The degree of immunity from septic infection in obstetric practice depends upon the completeness of the aseptic precautions adopted; the precaution which fails determines the quality of the success of the prophylaxis. If the fleet is to sail faster, it is useless to accelerate the swift cruise...

The cover of this issue’s InterDisciplines displays two sides of a medal. On its front we see the profile of the British King George V wearing his insignia of power; on its back, two ships, a warship and behind it a smaller cargo vessel. Both ships sail under a blaring sun; the coastline in the background is hilly and sports two palm trees. This medal was made out of silver and hung from a neck...

The recent discovery of Earth’s second Trojan asteroid (2020 XL5), which will remain in the vicinity Sun–[Earth+Moon] triangular Lagrangian point L4 for at least 4000 years, has attracted attention scientific community as a remarkable example those elusive objects that are witnesses first phase our Solar System. possibility an (ETa) may represent pristine record initial conditions System format...

Purpose: The study focussed to understand the reforms that influenced performance of PSEs in India with a special focus on SAIL, analyse role played by taken public enterprise increasing SAIL and examine significance such effectiveness sector enterprises.
 
 Theoretical Framework: This assessment, enterprises is going be discussed reference made Government (SAIL, 2023).
 Design/M...

The growing emphasis on learner-centered education focuses on intrinsically motivated learning via engaging problem-solving activities. Habitable 3D learning environments, in which learners guide avatars through virtual worlds for role-based problem solving, hold great promise for situated learning. We have been investigating habitable learning environments by iteratively designing, implementin...