Monthly Archives: February 2016

Hydrofoiling with Mini40 rc trimaran

by PerthMini40man


Third outing for my new Mini40. Shifty wind with lots of holes in it so not good for multihulls, but managed to get a few good runs in. Still got more work to do on the starboard foil to improve foiling when on port tack. The problem lies in the angle of attack control on the deck – not enough movement in the turnbuckle

Le café de la marine avec Franck Cammas

par Télénantes


Figaro, Route du Rhum, Volvo Race, Franck Cammas a quasiment tout gagné. Il rêve désormais de ramener la Coupe de l’America en France. Un sacré défi et il confie “que gagner la prochaine relèverait du miracle” mais on connaît le talent et la pugnacité de ce champion. Au comptoir du Café de la Marine, en compagnie de Jimmy Pahun et Gilbert Dréan, Franck Cammas reviendra sur l’accident qui aurait pu mettre un terme à sa carrière de marin de haut niveau et sur les risques inhérents à la navigation sur ces catamarans volants. Il évoquera aussi la suite de l’aventure, la méthode et les atouts du Défi français pour partir à la conquête du plus vieux trophée sportif au monde.

Emirates Team New Zealand gets Kiwi government funding

by NZ Herald

Photo by Chris Cameron

Photo by Chris Cameron

The Kiwi syndicate has been selected to receive Callaghan Innovation Growth Grant – the same scheme that has assisted Emirates Team NZ’s key rivals and America’s Cup holders Oracle Team USA. Oracle’s Warkworth-based boat-building operations, Core Builder Composites, was confirmed as a recipient of the grant in August 2014.

The grant gives taxpayer funding of 20 per cent of its R&D spend, up to a maximum of $5m for three years, plus GST. Companies can therefore get theoretical maximum funding of $17.25m.

Artemis Racing launches second Turbo

by Artemis Racing


Artemis Racing has made a flying start to 2016, relocating the team’s sailing operations to Bermuda, and perhaps even more significantly, launching its second turbo development boat of this America’s Cup campaign.

The new boat, nicknamed ‘T2’, was launched in Alameda, California, in early January. Design Coordinator, Adam May, provides an insight into the team’s development pathway for the 35th America’s Cup:

“Very early in this America’s Cup’s cycle we upgraded our existing foiling AC45, a boat similar to those used in the Louis Vuitton America’s Cup World Series, to boost its performance and provide a platform to test appendages.”

“However, our development path truly began with our sister ship turbo program. ‘T1’ was launched in February 2015 as a test platform scaled to be similar to the AC62 class. The original AC45 foiler was then retired and converted into T2. There was a pause during its build while the AC class changed, and many features such as a similar deck layout to that of the new AC Class were incorporated into T2.”

“T2 is our second fully loaded turbo charged AC45. The extra beam (for more righting moment), larger wing, cockpits, and full fairing package; make it a very different beast to the narrow traditional AC45s with foils.”

The team completed a successful 10-day camp in Alameda, ahead of the imminent relocation of Artemis Racing’s sailing operations to Bermuda.

Iain Percy, Team Manager, commented “It was very satisfying to launch T2 before we left for Bermuda. The design and build of this boat was our key focus for 2015, and I’m very proud of the result of the team’s ingenuity and endeavour. It was particularly pleasing to be foiling around the Bay on day one without any significant teething problems, giving us the chance to maximize the precious time on the water. We took away a number of key learnings and directions for our future America’s Cup Class development program”.

T2 will soon be lining up on the Great Sound against its sister ship T1 in what will be an important stepping stone towards the team’s goal of winning the 35th America’s Cup.

“Two boat testing is an important component of our campaign strategy. It’s going to be quite a sight seeing two Artemis Racing boats flying over the America’s Cup race course”, said Iain Percy.

L’utilisation des Foils en Architecture Navale

by Jean SANS – Union Nationale pour la Course au Large

La lecture de la formule de la portance …

La lecture de la formule de la portance …

Depuis des lustres, on a imaginé utiliser des foils porteurs sur les bateaux dans le but de sortir la coque hors de l’eau et de réduire ainsi la résistance à l’avancement de la coque. Les travaux sur les ailes d’avions, donc sur la portance, ont montré que la portance d’une aile est proportionnelle à sa surface alaire et au carré de sa vitesse de déplacement (la forme du profil, l’environnement, l’incidence ont aussi une influence). De là, l’idée d’installer des “ailes sous-marines” (foils) sur un navire a vite effleuré l’esprit des ingénieurs et des architectes navals.

Pour lire les articles entiers cliquez ici