sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery
Sail-World.com : America's Cup: The Wing is the Thing for Emirates Team NZ's next AC72
America's Cup: The Wing is the Thing for Emirates Team NZ's next AC72

'Grant Dalton (left) and Nick Holroyd in front of the new AC72 - Emirates Team NZ - Media Day January 17, 2012'    Richard Gladwell ©    Click Here to view large photo

Emirates Team New Zealand are on target to launch their second AC72 catamaran, around February 4, with their Challenger for the 34th America’s Cup having her first sail on February 7.

Doors at the teams base were thrown open for the New Zealand media today, showing the 72ft catamaran, with hulls in place, beams fitted and in an advanced state of preparation.

The hulls had only arrived from the Cookson Boats yard on Monday and four days later the beams had been fitted along with the other elements of the Y-structure which takes the loads and stresses from the yacht which is capable of sailing at over 40knots.

The differences from the team’s first AC72 were hard to spot – consistent with the theme that this design would be an evolution of the first rather than a completely new concept. In fact the design was locked off a few days after the launch of the team’s first AC72, in mid-July 2012. That first boat has since been decommissioned after sailing for the maximum 30 days allowed before the January 31, 2013 limitation prescribed by the Protocol for the 34th America’s Cup - ostensibly as a cost saving measure.

It’s a tough job but someone has to do it, Grant Dalton being interviewed for prime time TV news - Emirates Team NZ - Media Day January 17, 2012 -  Richard Gladwell_©   Click Here to view large photo
Although team principals would not be drawn on the precise nature of the changes, they did concede they were a number of small changes, which would make the second boat more efficient, resulting in faster speeds, stronger apparent wind and an all round better performer.

Eyes only zone

It is in the shed next door where the 40 metre tall wingsails are being built, that the real changes are being implemented. Cameras were barred, and media carefully chaperoned around the wing sails, in contrast to the relative free range permitted in the hull and platform assemble and fit-out area.

Boat 2 will be launched with the wingsail from Boat 1. That wingsail is being worked over completely by a team of 20 builders, in both a maintenance and upgrade exercise.

'We go back into the water with Wing 1, then we turn to Wing 2, which is half built', explains Emirates Team NZ MD, Grant Dalton. 'Then we go to Wing 2.'

'In the end they will be mirrors of each other, so we can switch them in and out if we have to.'

In response to a question as to whether the profile shape of the second wing will be different from the first, Dalton replies 'they will be the same profile, but the profile is changing.'

Y-structure looking aft with wingsail support in the centre foreground - Emirates Team NZ - Media Day January 17, 2012 -  Richard Gladwell_©   Click Here to view large photo
The team will use only two wings in contrast to both the Defender, Oracle Team USA and the Challenger of Record, Artemis Racing (SWE) who have both smashed their first wingsails, and will be building the full allowed quota of three wingsails.

'They will be so interchangeable the guys won’t even know which one is in the boat,’ chips in Technical Director, Nick Holroyd.

In fact the objective with the wingsails is that if one is totally destroyed before the start of one race, the second will hopefully be able to be fitted in time for the boat to race in the second race of the day. 'They are just sitting there, ready to go,' says Dalton.

Turning to the other AC72’s, Dalton says they don’t know what Artemis Racing’s second wingsail will be like. 'Oracle’s wing is different. Its sectional shape is a little different, but it is more in its ratio that it is quite different, in terms of its flap to front element ratio. It looks really clean. It looks like a really nice wing.

'We don’t know what their third wing is like, but based on the timeframe they had available we can’t imagine that it will be much different from their second. You just don’t have the time available to do any re-design.'

Big hours for design and build

Holroyd explains that there is about 20,000 hours involved in building a wingsail – 'to put that in perspective, it’s the build time of an IACC boat (used in the past five America’s Cups). That’s just hours to build, for design we have three aero-dynamists working on it, and another five on the mechanical drawings and structure and composite design work. It is not far of a third of our design team working on the wingsails for almost two years now.

Tactician, Ray Davies, puts his electrical skills to good use working on the electronics fitout - Emirates Team NZ - Media Day January 17, 2012 -  Richard Gladwell_©   Click Here to view large photo
'There are 15-18 man years of design work in this wingsail'

'There’s a huge number of components, plus the weight budget is very tight, and even more so with the wingsail, because the weight is up high', he adds.

'The wingsails are designed for the San Francisco weather bell-curve, which centres on 15-16kts. Your ability to twist the wing and de-power it is very, very important. If you were running these boats in Valencia, Spain you might look at a three element, two slot type of wingsail. This wingsail package is very much tailored to the winds that we are expecting in San Francisco.'

In response to questions about the top wind strength in which the AC72 is designed to be able to race, Holroyd says that 'is the subject of wild debate amongst the Challengers.

'All the Challengers have been pushing right the way through to lower the 33kt limit that has been in the Protocol. I suspect we might see a little more flexibility from the Defender on that point in the coming months', he adds with a wry smile.

For TVNZ's Martin Tasker's report click here

And for 3News Ashlee Tulloch's report click here





James Graham works on the small work table - Emirates Team NZ - Media Day January 17, 2012 -  Richard Gladwell_©   Click Here to view large photo

The Y - structure looking forward - Emirates Team NZ - Media Day January 17, 2012 -  Richard Gladwell_©   Click Here to view large photo

Richard Meacham (left), Nick Holroyd and Vito Vattuone have a designer discussion - Emirates Team NZ - Media Day January 17, 2012 -  Richard Gladwell_©   Click Here to view large photo

Main beam connection - the beams slot into the hull, with the small gap being covered by fairing - Emirates Team NZ - Media Day January 17, 2012 -  Richard Gladwell_©   Click Here to view large photo

The forces are all carried in direct lines through the Y-structure - Emirates Team NZ - Media Day January 17, 2012 -  Richard Gladwell_©   Click Here to view large photo


by Richard Gladwell

  

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

http://www.sail-world.com/index.cfm?nid=105686

10:05 PM Thu 17 Jan 2013GMT


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

Related News Stories:

17 Jan 2013  America's Cup: Designer Mike Drummond looks at foiling and pitchpoling
15 Jan 2013  America's Cup: First look at Emirates Team NZ's second AC72 + Video
15 Jan 2013  America's Cup: Ex-Oracle design chief looks at the Class of 2013
13 Jan 2013  America's Cup Discovered: Episode 72 - Passion to Excel
11 Jan 2013  American Youth Sailing Force ready for battle at Youth America's Cup
11 Jan 2013  America's Cup: Emirates Team NZ and Luna Rossa '45ing + Video
10 Jan 2013  America's Cup: Luna Rossa skipper updates from Auckland
10 Jan 2013  America's Cup: Luna Rossa crew return to Auckland for final training
09 Jan 2013  America's Cup: Oracle Team USA's second wingsail arrives in San Fran
09 Jan 2013  America's Cup: Top designer still rates Oracle's chances of success
MORE STORIES ...






News - USA and the World

























2014 Rolex Big Boat Series - Farr 40 Day 4 by William Wagner, San Francisco










































2014 Rolex Big Boat Series - Full-blown, once again
ISAF Worlds - Americans jump up Laser and Laser Radial leaderboard
2014 Rolex Big Boat Series - Farr 40 Day 3
America's Cup: Luna Rossa sailing with two foiling AC45's + Video
Extreme Sailing: Emirates Team NZ retain second overall
ISAF Sailing Worlds, Santander - Rio Olympic Laser spots snapped up
Rolex Swan Cup - All set for final showdown
Upper Midwest sailors need help to take it to the next level
ISAF Sailing World Championships - RS:X action begins in Santander
ISAF Sailing Worlds, Santander - Americans rise in Laser and Radial
Extreme Sailing Series - A remarkable penultimate day’s racing + Video
Marseille One Design - GC32 GDF Suez unstoppable in the light
Rolex Swan Cup - Day 3 images by Carlo Borlenghi
ISAF Sailing World Championships - Images of the leaders in Santander
Rolex Big Boat Series - Good day for Double Trouble
Rolex Big Boat Series - Day 2 images by Erik Simonson
Royal Cup Marina Ibiza - TP52 fleet ready for tricky race tracks
Rolex Big Boat Series - Plenty maintains lead
2014 Asia Pacific Student Cup - Count down begins
Extreme Sailing Series: Live coverage of Day 3 - view here
Volvo Ocean Race 2014-15 - Going away   
Volvo Ocean Race 2014-15 - Practice makes perfect   
2014 J/70 World Championship - Contrasting conditions on Day 4   
Rolex Big Boat Series - 50 years of big boat racing: a retrospective   
2014 Rolex Big Boat Series - Day 2   
Snipe Western Hemisphere and Orient Champ: Rios takes the Championship   
Volvo Ocean Race: Leg Zero signals start of the significant racing   
Extreme Sailing Series: Physically demanding racing for BAR on Day 2   
Emirates Team NZ: Holding second overall after Day 2 in Istanbul   
Extreme Sailing Series: A force to be reckoned with in Istanbul +Video   
ISAF Sailing Worlds - Day 1 images by Jesus Renedo and Pedro Martinez   
Marseille One Design: GC32's Armin Strom storms ahead on day 2 + Video   
ISAF Sailing World Championships - Racing underway in Santander +Video   
ISAF Sailing Worlds, Santander - Erika Reineke claims Radial race win   
Santander Worlds 2014 Mat Belcher (Part II) *Feature   
Rolex Swan Cup - Mistral keeps fleet shoreside   
PWA Cold Hawaii World Cup rescued by wave of local support   
ISAF Sailing World Championship, Santander - Opening ceremony images   
Volvo Ocean Race 2014-15 - Team Alvimedica geared up for Leg Zero   
J/70 World Championship 2014 - Healy surfs into lead   


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