Wing Sail Technology : A wingsail is a form of marine propulsion similar to conventional sails. However, a wingsail is a built-up structure with airfoil cross-section, like an airplane wing, which shape can provide a much better lift-to-drag ratio than conventional sails.
The catamaran Miss Nylex was developed to compete in the International Catamaran Challenge Trophy Race. This competition is decided every 2 years for what has become known as The Little America’s Cup. The trophy was donated in 1960 by the Sea Cliff Yacht Club of New York initially for competition between England and America. It was won from Denmark by Australia in 1970, and in 1972 the Sorrento Sailing Club had to mount a defence of the trophy against a challenge from America. This became the beginning of the story of Miss Nylex, when, in early 1971, a syndicate was formed under the sponsorship of the Nylex Corporation to build a boat to enter for selection to contest defence of the trophy in 1972. The story stretches out over a period of 5 years and has led to the development of a rigid aerofoil rig which is close to the optimum for windward performance. In this paper concentrate on the differences between Miss Nylex and other C-class catamarans so as to give the maximum amount of detail regarding those features which are unique.
The strategic goal of this collaborative project is to establish a new, highly interdisciplinary research program in the field of adaptive structural systems. For obvious reasons engineering research need to be related to a specific application. In the frame of this proposal shape adaption is applied to an aircraft airfoil. Yet our findings will provide scientific fundament for many other applications.
The main challenge of a smart airfoil lays in the conflicting requirements of deformability and rigidity. In fact, no airplane could possibly fly with a compliant wing, due to the occurrence of dynamic (flutter) and quasi-static aeroelastic instabilities. Previous research on the smart airfoil was mostly based on a purely structural approach: mechanical engineers tried to solve this issue by optimizing the structural features of the wing (with compliant behavior only for selected deformation modes) which resulted in severe limitations for both the adaptability of the wing and its capability to sustain high speed aerodynamic loads.
Série spéciale Flying Edition avec un gennaker recyclé dans les voiles du vainqueur ! Septembre 2013 : Finale de la plus prestigieuse course au monde Hiver 2014 : 727 Sailbags recycle les voiles du vainqueur Maquette en papier à monter soi-même, pré-découpée et pré-pliée Notice de montage fournie
Ben Ainslie Racing (BAR) is pleased to announce it will be working with Red Bull Advanced Technologies (RBAT), a division of the Red Bull Formula One group, as it progresses with its campaign to claim the 35th America’s Cup.
First revealed to the public earlier this year, NASA and the U.S. Air Force Research Laboratory have finally begun testing what they hope will be a revolutionary new airplane wing design that replaces moving parts with shape-changing assemblies allowing wings to bend and twist to maneuver a craft through the air.