sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery

 

Sail-World.com : Wings, the Next Generation

Wings, the Next Generation

'The slim lightweight design Cogito, the 1996 Little America’s Cup winner'    © Richard Gladwell    Click Here to view large photo

Wanna have some fun? Set Paul Cayard loose on the subject of America's Cup 34, some re-imagined and surprising wing-control mechanisms, and the terrors of San Francisco Bay in full cry. The custom AC72 catamarans of 2013, he says, will be 30 percent more powerful but 'much less stable' than the AC45s that sailed three events this year on the America's Cup World Series circuit.

And occasionally failed to maintain verticality.

Cayard's home waters, where the Cup will be sailed, are known to be a windy spot, and when the ebb tide works against the seabreeze—one sixth of all the water in San Francisco Bay goes out, and in, twice a day—then she be lumpy, mon. Sea state, even more than wind strength, is something to fear once the breeze is up, funneling through the Golden Gate and peaking on many days at 18-22 knots. Unless it peaks at 30, and shucks, that's just home for the home folks. But what does it mean to racing an AC72 with 38 hydraulic cylinders in the wing?

The new America’s Cup class the AC72 will be used for the 34th America’s Cup  America?nid=91361's_Cup.com   Click Here to view large photo
Until the first AC72s are launched in July, 2012, it's all theory, but, 'If you're making 25 knots upwind and 40 knots downwind, tacking on someone and gassing them just isn't happening,' Cayard says. 'In seriously-overpowered boats, the match will be about who can actually get the boat around the course and figure out how to avoid that extra gybe that costs you maybe 20 seconds, maybe 250 meters.'

As CEO of the Swedish challenger, Artemis Racing, Cayard is not shy about telling you that his Challenger of Record team has gone its own course in engineering an AC72 wing. The box rule governing the AC72 is one big sandbox, so the engineers get to play.

Oracle Racing Team Coordinator Ian Burns explains: 'I was involved in writing the rule for the AC72s, and when we addressed the wing, we started with a complicated rule, to limit what a designer could do. We added more and more pieces as we thought of more and more outcomes, and we came to a point where it was so complicated—and it was still going to be hard to control, because the more rules you write the more loopholes you create – that we reverted to a simple principle. Limit the area very accurately, and make it a game of efficiency.'

The Artemis approach to efficiency, Cayard says, uses a three-element wing. No surprise. Any wing is much more efficient than a mast and soft sail—for many reasons, not the least of which is that mid-leech tension becomes a non-issue—and C Class catamarans long ago demonstrated that three elements, two slots, are faster than two elements, one slot. I expect every AC72 to have a three-element wing.

Unless, or until, someone develops a fully-warpable single-element wing, but that's for another day . . .

In C cats, the middle element has been narrow, which probably is a portent for AC72 wings, but what do I know? There's never before been as much money or as much research thrown at the problem as now.
Cogito, showing the wing mast positioned and rotating on the main beam with the dolphin striker below, in a common treatment of distributing these loads. -  © Richard Gladwell?nid=91361   Click Here to view large photo


But when you scale up to a wing 130 feet tall, how do you control the beast? The first Artemis wing is under construction in a special facility in Valencia, Spain, Cayard says, and to control the moving parts in that wing, 'We have 38 hydraulic cylinders. We want to avoid running hydraulic piping to each of them, because that would be heavy, so we have electrovalves embedded in the wing to actuate the hydraulics. But if you had two wires, positive and negative, running to each electrovalve, your wing would look like a PG&E substation, and that's heavy too, so we use a CAN-bus [controlled area network] with far fewer wires. Still, it's incredibly complex.

'We wind up with lot of hydraulics,' Cayard says, 'and the America's Cup rules don't allow stored power, so two of our eleven guys—we think, two—will be grinding a primary winch all the race long. Not to trim, but to maintain pressure in the hydraulic tank so that any time someone wants to open a hydraulic valve to trim the wing, there will be pressure to make that happen.'

Nathaniel Herreshoff (with Cayard, one of the first 15 people inducted into the National Sailing Hall of Fame) built a catamaran called Amaryllis in 1876, but it was too fast, too different, for its time. There is no way that Nathaniel Herreshoff could have foreseen an AC72, but he was the type of guy who would have been thoroughly intrigued.

I'm guessing the people who wrote the AC72 rule didn't foresee the Artemis configuration of wing controls, either, but I didn't get invited to that meeting so I really don't know. When I asked Cayard about the lineup, he allowed as how the competition's hydraulics are 'probably a bit different.'

The Wing, the Hull, the Hull, the Wing

Cayard figures the 'boat' is a four-month build at $4-5 million (the airfoil-shaped crossbeams themselves taking four months) and then 'The wing is about the same again, but it's a six-month endeavor.'
And how will this Artemis wing fit into the fleet to be?

The fleet of which we know almost nothing . . .

'Once you have a setup like ours you could easily autopilot the thing,' Cayard says, 'but that's not legal. You must manually control the wing, with no stored power. With our guys grinding to maintain hydraulic pressure, someone else on the boat can push a button and send an electric current to a switch that will open a valve to let hydraulic fluid flow to shape the wing.

'It's a fine line. They're still refining those rules.'

A forerunner of the AC72 class, the one design AC45, sails in the 34th America’s Cup venue of San Francisco  ACEA - Photo Gilles Martin-Raget?nid=91361_©   Click Here to view large photo

Footnote: The one-design AC45s now on hiatus until America's Cup World Series racing resumes in April in Naples, Italy, were purposely kept simple because the game needed boats on the water, and the engineers needed to get it right the first time. Thus the two-element wing. Thus the straight daggerboards. The design team got it right, and the boat is a winner.

But no one is going to bring that package, upsized, to the gunfight of 2013.

I'm just telling you.

blueplanettimes.com/




by Kimball Livingston

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=91361

10:13 PM Thu 1 Dec 2011 GMT






Click here for printer friendly version
Click here to send us feedback or comments about this story.

Click for further information on
2013 America's Cup
2011-13 America's Cup World Series

Related News Stories:

29 Sep 2014  America's Cup: Oracle Team USA's AC72 takes to the streets
27 Sep 2014  America's Cup: Then and now - Coutts on why Oracle won, and the Venue
09 Aug 2014  America's Cup: Former Artemis crew member says danger is being ignored
27 May 2014  America's Cup: Oracle Team USA under stress
23 May 2014  America's Cup: Oracle and Team NZ designers reveal AC72 secrets
22 May 2014  America's Cup: Artemis death verdict 'result of an human act'
10 May 2014  A year after the Artemis incident, the sailors tell of the pain
01 May 2014  America's Cup: Oracle and Team NZ tech insights - Free lecture tonight
16 Apr 2014  America's Cup: Expected de Ridder penalty should be reduced
14 Apr 2014  America's Cup: Dean Barker's Blog - A sail with the Duke and Duchess
MORE STORIES ...

News - USA and the World

2014 12 Metre North American Championships - Two days of a northerly (first strong, then light) and one day of a building southwesterly put six 12 Metre yachts to the test at their North American Championships, which were held off Newport, R.I. over September 26-28. Gunther Buerman’s (Newport, R.I.) KZ-3 and Dennis Williams’ (Hobe Sound, Fla.) Victory ’83 defended their titles ... [more]  

Photographer Eugenia Bakunova of leading Russian website www.mainsail.ru was on the water at Les Voiles de Saint Tropez on the French Riveria , and provided this gallery of images of the classics and other yachts racing ... [more]  

2014 ISAF Sailing World Cup - Melbourne - Don’t forget to enter the ISAF Sailing World Cup – Melbourne. There are only two days left to take advantage of the discounted entry price offer. ... [more]  

After Gmunden, Austria, in 2011 and Cala de' Medici, Italy, in 2012 and after a pained second place, same points with the Portogues 'Credite Egs' in Portosin, Spain, last year, the Italian crew coming from Puglia 'Euz II Monella Vagabonda', with Sandro Montefusco at the helm and his brother Paolo as a tactician, confirms for the third time the Platu 25 World Championship title. ... [more]  

Carlo Borlenghi was on deck for the first day of competition at Les Voiles de Saint-Tropez to capture these images. ... [more]  

Photographer Ingrid Abery was on site for day one of racing at the 2014 Les Voiles de Saint Tropez to capture these images. ... [more]  

The final day of the 2014 U.S. Team Racing Championship ended up being a half day of sailing due to a complete shutdown of the wind. However, the fleet completed enough races to count Gold Round Robin 3 and crown Ladies and Gentlemen as the back-to-back Team Racing Champions. ... [more]  

Michigan, the Great Lakes State, was a fitting location as The National Sailing Hall of Fame (NSHOF) gathered for the fourth time in the organization’s history to fulfill its mission to recognize Americans who have made outstanding contributions to the sport of sailing. ... [more]  

The International Sailing Federation (ISAF) has published guidelines for candidates bidding to host the 2016 ISAF Youth Match Racing World Championship. Bids to host the 2016 ISAF Youth Match Racing Worlds must be received by Friday 24 October 2014. ... [more]  

The onboard medic-sailors competing in the upcoming Volvo Ocean Race have completed their last medical training. More than a basic first aid refresher course, the mandatory medical training each Volvo Ocean Race team had to carry out in the last few months and days are key to survival while at sea. ... [more]  

Erik Simonson was on the water at 2014 Melges 20 Pacific Coast Championship to capture these images. ... [more]  

2014 J/105 North American Championship - Light air ruled the J/105 North American Championship hosted by Royal Canadian Yacht Club in Toronto, Ontario, Canada—and so did Rod Wilmer and Terry McLaughlin on Mandate. ... [more]  

The Extreme Sailing Series event in Istanbul seems to have only just finished, but already the containers are in the Ville de Nice set to gear up for this weeks penultimate regatta. Peter Burling and Blair Tuke are back onboard this week, fresh from their 49er World Championship win and looking to make it two wins from two events for Emirates Team New Zealand on the ?Extreme Sailing Series ... [more]  

2014 Buddy Melges Challenge - In Sunday’s final matches in the Buddy Melges Challenge, Stephanie Roble and Lotte Meldgaard Pedersen showed the crowds on the bluffs of Lake Michigan how top class match racing should be sailed. It took five absolutely thrilling matches for the Danish crew to secure their first WIM Series event victory since last summer’s Danish Open. ... [more]  

America's Cup: Oracle Team USA's AC72 takes to the streets by Richard Gladwell/Sail-World.com/nz
Oracle Team USA's winning AC72 takes to the streets of San Francisco, one year on from the Team's successful Defence of the America's Cup. This week the AC72 catamaran Oracle Team USA raced to victory is going to be a special guest at Oracle OpenWorld 2014 in San Francisco. ... [more]  

Matches between the world’s top two match racing skippers are always aggressive affairs on the Alpari World Match Racing Tour (AWMRT). In the pre-start of the first match, Canfield stuck two penalties on Williams, leaving the British boat playing catch-up. ... [more]  

Pantaenius, the world’s leading specialist yacht insurance company, has been at the forefront of yacht insurance for more than 40 years, earning a reputation for transparency and commitment to customer service that provides round-the-clock international support and reliable, speedy claims settlement. ... [more]  

What a great day for kiting at Kite Foil Gold Cup Australia 2014! 10-15 knot North Easterly and slight seas. Kites zooming around like supersonic mosquitoes but mosquitoes buzz whereas foiling kites are completely silent! ... [more]  

At the time that we are writing this, it is almost exactly a week since the first race took place at Wakatere Boating Club in New Zealand, followed by hundreds of races across the globe that we have been told attracted record numbers of sailors to your clubs ... [more]  

2014 U.S. Team Racing Championship - It was a picturesque day on Marblehead Harbor with plenty of sunshine for the second day of the U.S. Team Racing Championship. Once again, a lack of consistent breeze made for a challenging day for the Race Committee, umpires and competitors. Nevertheless, PRO Susie Schneider and her team were able to complete Round Robin One ... [more]  

2014 Buddy Melges Challenge - Saturday’s racing in the Buddy Melges Challenge on Lake Michigan, USA, saw more breeze than ever before during the week. Stephanie Roble used her local knowledge to show a clean sheet for the day, going in to Sunday’s conclusion with a one – zero lead over Lotte Meldgaard Pedersen in the final, sailed as a best of five match series. ... [more]  

2014 U.S. Adult Sailing Championship - A balanced field and limited racing usually leads to close races and a crowded leaderboard. This was the situation on Eagle Mountain Lake for the last day at the U.S. Adult Championship, hosted by Fort Worth Boat Club. ... [more]  

2014 J/105 North American Championship - Five races are now in the books, and just three points separate the top three teams at the J/105 North American Championship hosted by Royal Canadian Yacht Club in Toronto, Ontario, Canada. ... [more]  

Photographer Eugenia Bakunova of leading Russian website www.mainsail.ru was on the water at the 36th edition of the Régates Royales – Trophée Panerai, and provided this gallery of images of the classics racing off Cannes. ... [more]  

Régates Royales – Trophée Panerai: Cannes at its best by Eugenia Bakunova, www.mainsail.ru
The 36th edition of the Régates Royales – Trophée Panerai drew to a close on Saturday. Photographer Eugenia Bakunova was on the water at the 36th edition of the Régates Royales – Trophée Panerai, and provided this second gallery of images of the classics racing off Cannes. ... [more]  

David Gilmour was the only skipper to keep a clean sheet in today’s light-air action at the Dutch Match Cup in Lelystad. Team Gilmour swept aside their fellow Western Australians in a 3-0 Quarter Final against Keith Swinton and Team Alpari FX. The young Aussies then took the first match of their Semi-Final against the reigning ISAF World Champions, Taylor Canfield and US One. ... [more]  

Ian Williams and his GAC Pindar crew responded to a challenging qualifying session on Friday in Lelystad, to win a tense quarter-final against Phil Robertson (WAKA Racing), 3-2 and book a fifth consecutive semi-final in the Alpari World Match Racing Tour at the Dutch Match Cup. ... [more]  

The 44th Hobie 16 North American championships concluded on Friday with Jason Hess and Irene Abascal from Club Los Sauces, Guatemala taking the title. Mark and Grace Modderman from Long Branch, New Jersey followed in seond place and Pedro Colon and Monica Cabrera from Puerto Rico in third winning the tie break over Dan Borg and Liana Giovana from Canada. ... [more]  

The seven One Design VOR 65s were built by a consortium led by Green Marine in the UK. The first of those for the Team SCA women wad delivered in October 2013, the last was supplied to Team Vestas Wind in August 2014. ... [more]  

Over the last year we have interviewed Knut Frostad, the CEO of the Volvo Ocean Race four times, at times the stress has shown but yesterday just eleven days before the start of the 2014-2015 Race, he was like a different person, when we met with him again, at Volvo Ocean race headquarters portside in Alicante ... [more]  

NBC Sports Network, which was critically acclaimed for its 2013 coverage of the 34th America’s Cup, has signed on to provide full broadcast coverage in the U.S. of the 12th edition of the Volvo Ocean Race, the world’s premier offshore sailing race. Outside Television will also air complete TV programming – in addition to full digital coverage – of the nine-month long race from October 2014-June 20 ... [more]  

2014 J/24 World Championship - With just a few points between Will Welles Cougar (USA) and Mauricio Santa Cruz Bruschetta (BRA) there was no room for error in the final two races of the 2014 J/24 World Championship hosted by Sail Newport. ... [more]  

2014 Buddy Melges Challenge - Friday’s racing offered even less breeze than the previous days of the Buddy Melges Challenge. Lotte Meldgaard Pedersen won all her four matches of the day, to win the round-robin stage and secure her slot in the semi finals. ... [more]  

2014 U.S. Adult Sailing Championship - Day 3
2014 U.S. Team Racing Championship - Day 1 + Video
America's Cup: Then and now - Coutts on why Oracle won, and the Venue
Byte CII World Sailing Championship comes to Royal Varuna, Thailand
Dutch Match Cup: Canfield wins Qualifying, six set for Quarters battle
12 Metre North Americans - A blast from the America’s Cup past
2015 ISAF Sailing World Cup qualification system published
Volvo Ocean Race: Mapfre named as Spanish team sponsor + Video
Extreme Sailing Series returns to Nice for the penultimate Act of 2014
ISAF invites bids for 2016 Women's Match Racing World Championship
2014 ISAF Sailing World Cup, Melbourne - Teaming up
Mascalzone Latino Jr. named 2014 Melges 20 European Ranking Champion
2014 Buddy Melges Challenge - Le Berre keeps winning in Sheboygan
Hobie 16 Open North American Champ and Pan Am Games Qualifier - Day 4
2014 U.S. Adult Sailing Championship - Day 2
J/105 North Americans - Wilmer and McLaughlin master light conditions
J/24 World Championship - Will Welles hangs on going into last day
Open 2.4mR World Championship on the horizon
Bart's Bash - Top photographers gain special entry
Platu 25 Worlds - EUZ II Monella Vagabonda is still leading in France
St. Barth Cata Cup - Olympic duel on the island   
Dutch Match Cup - High winds and big wipeouts in Lelystad   
Route du Rhum - Yann Guichard to sail Spindrift 2 solo   
Mirabaud Yacht Racing Image - Best sailing photo of the year sought   
Volvo Ocean Race - Yann Riou, getting you up close and personal   
Marseille One Design concludes GC32 racing season + Video   
World Yacht Racing Forum - Seventh edition to take place in Barcelona   
Record number of entries for the Sailing Champions League   
Platu 25 World Championship - Euz II Monella Vagabonda still leading   
Rolex Middle Sea Race Record - A possibility for Esimit Europa 2   
Richmond Yacht Club's International 14 Nationals: Return of 14 footers   
Buddy Melges Challenge - Le Berre leading, undefeated, in Sheboygan   
2014 J/24 World Championship - Will Welles holds advantage   
Etchells Lobster Bowl Regatta - Rob Hitchcock overall winner   
US Wabbit Nationals at Richmond YC   
YCs of Long Beach Charity Regatta - Local area sailors turn out   
U.S. Team Racing Championship to serve as Qualifier for ISAF Worlds   
ISAF Sailing World Cup Final - Champions confirm Abu Dhabi attendance   
Dutch Match Cup - Top three keep perfect score   
Second Star Sailors League grand finale to take place in Nassau   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW US
LocalAds   DE  ES  FR  IT