Game On For ETNZ as 1st AC 75 Prepares To Splash

[Photoboy]

Pics from Viaduct Marina as the ETNZ AC 75 Foiling Monohull readies tohit the water for the 1st time!!!

[Tonapah Low]

I'm sure Stars and Stripes is set to launch any day now.

[IOR Geezer]

They are making great strides, aren't they?

[Photoboy]

ETNZ 1st To Launch Their AC75


© EMIRATES TEAM NEW ZEALAND

Emirates Team New Zealand christened their first AC75 at their team base in the heart of the America’s Cup village in Auckland today.

The significant milestone was celebrated with the team, their families, sponsors and suppliers. The boat was christened “Te Aihe” (Dolphin) by Marcus Gerbich - member of the MDN Foundation - and blessed by Ngati Whatua.

Emirates Team New Zealand COO Kevin Shoebridge, who has overseen the development and launch of plenty of boats over the years, was especially proud to be witnessing the Kiwi AC75 emerge for the first time.


© EMIRATES TEAM NEW ZEALAND


“This is a significant occasion for the team, not just because it is another new boat, but really because when we won the America’s Cup in 2017 we very quickly had to come up with a new concept of boat that would really continue to push the boundaries of innovation and technology in the America’s Cup. So in the relatively short time frame since November in 2017 when we published the concept, to seeing it in the flesh today is an amazing testament to the entire team willing to push things all the way from concept to design to build and fit out” said Shoebridge.

It has taken over 100,000 man-hours to design and build the boat with a group of about 65 people between designers and boat builders who have been working quietly throughout the past year.

Sean Regan has led the set up of the team’s bespoke production facility on Auckland’s North Shore from a blank factory floor to producing the first AC75.

“We have had the pressure on since the moment we decided to establish our own production facility very early on in this campaign. We have built up a really great team of 42 fully committed people at the yard who have been working full-on to get this boat out the door,” said Regan.

“Even for the most experienced boat builders on the team, this has been a very unique build because it is such a sophisticated boat. But it is really encouraging that for a number of our junior and apprentice boat builders their first build has been on a boat that is really on the cutting edge of complexity in build, design and performance.”

Emirates Team New Zealand Head of Design Dan Bernasconi was a central figure in the development of the AC75 Class Rule before turning his team of designers’ attention to the specific design of the Emirates Team New Zealand boat.


© Live Sail & Die

“There’s a huge amount of innovation in the design and build of the AC75 – more than we saw in the AC50’s in Bermuda” said Bernasconi. “The AC75 is a completely new concept and has presented plenty of challenges across many areas – but this is precisely what the Rule was designed to do – to push development to the extreme. We haven’t been conservative in any aspect of our design; it’s not long until we need to commit to the design of our second boat, which we will ultimately race in the 2021 America’s Cup, so we need to test as many of our ideas as possible in the yacht we’re launching today.”


© Live Sail & Die




Unlike the other main Challengers, Emirates Team New Zealand has focused the development of their first boat entirely with their in-house simulator as opposed to building a smaller scale test boat to validate concepts on the water. So once the AC75 goes for its maiden sail, it will be the first time the team has collectively sailed since winning the America’s Cup on June 26th 2017.

“It won’t be without nerves the first time we go sailing, but I am sure that is no different for all of the teams.” said Glenn Ashby

“The AC75’s are big powerful and fast boats so they will be a handful, but from our understanding through our simulations they are inherently a safer boat to sail than what we have sailed in the past two America’s Cups. As with any new boat it is all about slowly getting it up to speed, learning how to sail it most efficiently, pushing the development of the designs and then putting in the hours in getting ready to race for the ACWS Sardinia in April 2020.”

Emirates Team New Zealand will now focus on a busy period of testing on Auckland’s Hauraki Gulf over the spring and summer months having the advantage of developing and training on the race area of the America’s Cup Match which will be raced in March 2021.

Emirates Team New Zealand CEO Grant Dalton concluded: “I wish to thank every single team member for the hard work they’ve done to get us to this day. A special thanks also to all our sponsors and partners for all of their valued support so far and everything they will continue to do during our journey towards the America’s Cup Match in 2021.

It is an exciting time, but things are about to get a whole lot more so from now.”


© EMIRATES TEAM NEW ZEALAND
About the name:

The name Te Aihe (Dolphin) is based on the whakatauki (proverb):
“Mā te Aihe e tuitui ai i te ngaru moana, mā te Rangatira e tuitui ai i te tangata”.
"As the dolphin sows through the seas so does a leader sew people together”.



Using technology to set precedence

The AC75 Class is a 75 foot, high performance monohull governed by the AC75 Class Rule which was published on 29 March 2018. The Class Rule is open enough to guarantee a wide margin of freedom to the designers but introduces certain one-design elements for cost containment also.

The AC75 supplied parts – identical for all the teams - are the foil arms, the foil cant system and the rigging. The shape and base laminate of the mast is also controlled by the Class Rule.

The AC75 rotating mast is a 26.5 meter long one-design ‘D’ shaped section that weighs about 300kg and serves as the leading edge of the double skinned mainsail.

Emirates Team New Zealand’s mast has been built at Southern Spars in Auckland whereas the rigging package was built at Future Fibres in Valencia.

The two other one-design components are key to make the boat fly.

The foil arms, built at Persico Marine in Italy, are the result of a project led by Luna Rossa Challenge with the collaboration of all the America’s Cup teams and New Zealand based composite engineering consultancy Pure Design and Engineering. Each 4.5 metre long carbon foil arm has a wing attached to its tip. The foil wings are custom designed and built by each team.

Driving the foil arms is the electronic and hydraulic foil cant system (FCS), another one design supplied part, which moves the arms and wings in and out of the water. The foil cant system was designed by Emirates Team New Zealand and assembled in Auckland before being distributed to all teams earlier in the year.

The rest of the Class Rule is open and being a new concept, leaves the design quite open as no proven path has yet been defined for these types of boats. Any shrouding of the yachts in the 36th America’s Cup is prohibited so teams won’t be able to hide their different design approaches and subsequent developments.

The most visible differences will be seen in the hull shapes and deck layouts. Despite a number of basic constraints such as the length, the hull shape has few significant limits on *shape or structure. Design teams will be looking for a shape with minimal drag in light-wind displacement mode while also addressing the stability required to generate thrust for take off.

Evident differences will be displayed also in the foil wings and wing flaps as they are also open to design and, being T-style foils, their shapes have been less explored than the L- foils used in the last two Cups.

The double-surface mainsail – a new innovation of the 36th America’s Cup Class Rule - will be key in the performance of the boat and a lot of hours have been invested in its design.

The hydraulic and electronic control systems, powered and controlled by the crew, operate key components of the boat such as the foils and they have been subjected to important developments as well but will they remain a very guarded secret by each team.

All in the numbers
23: the length in metres of the new boat
26.5: the height in meters of the mast from the deck
11: the crew onboard
6.5: the weight in tonnes of the boat
5: the maximum beam of the boat and the foils’ maximum draft
4: the foil wing span in metres
65: number of people working on the design and build of the boat. 30 designers and 35 boatbuilders have put in the hours to design and build “Te Aihe”.
100,000+: number of man-hours it took to design and build the boat.
2021: the 36th America’s Cup will take place from the 6th to 21st of March 2021
1851: the year the America’s Cup was born
3: Times New Zealand has won the America’s Cup

https://emirates-team-new-zealand.am...IRST-BOAT.html

[IOR Geezer]

Impressive piece of technology there.

Crashes should be equally impressive.

[Photoboy]

Te Aihe Flies



"Te Aihe flies.

It is always a very special moment for the team to see a boat rise up out of the water for the first time.

The first of many significant boxes to tick. Early days yet."


Not a lot of chatter from ETNZ who are always tight lipped about progress and take a very measured route with their testing process,
but the good new is 2 out of 2 of these 75 Flying Monohulls have shown the ability to soar.

https://www.tvnz.co.nz/one-news/spor...-off-auckland?

Sail-World Report

[Tonapah Low]

Looks like these things might work afterall, but imagine if the arms tangle.

[IOR Geezer]

While I admire the technological advances, I can't see how the new platform encourages any new blood to join in.

[Photoboy]

"It is always a very special moment for the team to see a boat rise up out of the water for the first time."

[Photoboy]

Contrasting Solutions To Common Problems






The much-anticipated launch of the first two AC75 foiling monohull yachts from the Defender Emirates Team New Zealand and USA Challenger NYYC American Magic respectively did not disappoint the masses of America’s Cup fans waiting eagerly for their first glimpse of an AC75 ‘in the flesh’.

Emirates Team New Zealand were the first to officially reveal their boat at an early morning naming ceremony on September 6. Resplendent in the team’s familiar red, black and grey livery, the Kiwi AC75 was given the Maori name ‘Te Aihe’ (Dolphin).

Meanwhile, the Americans somewhat broke with protocol by carrying out a series of un-announced test sails and were the first team to foil their AC75 on the water prior to a formal launch ceremony on Friday September 14 when their dark blue boat was given the name ‘Defiant’.

But it was not just the paint jobs that differentiated the first two boats of this 36th America’s Cup cycle – as it quickly became apparent that the New Zealand and American hull designs were also strikingly different.On first comparison the two teams’ differing interpretations of the AC75 design rule are especially obvious in the shape of the hull and the appendages.

While the New Zealanders have opted for a bow section that is – for want of a better word – ‘pointy’, the Americans have gone a totally different route with a bulbous bow that some have described as ‘scow-like’ – although true scow bows are prohibited in the AC75 design rule.

The differences between the two AC75 hulls do not stop there, with the two design teams taking significantly contrasting approaches on the underwater profiles of their AC75s as well.








While the American Magic AC75 appears to have been built with an all but totally flat underwater section, Emirates Team New Zealand’s boat has a pronounced longitudinal bulge underneath running almost from bow to stern.

These two different approaches have set the sailing world alight with fans speculating over the thinking is behind each of them and pondering what the sailing characteristics of each boat might be.

Despite being very different the images of the two boats reveal some similarities as well such as the cockpit layout. Both teams have their cockpit divided in two by a central extension to the forward deck, creating two pits in which the crew can operate low down and out of the airstream. There will be plenty of improvements to come on how teams will manoeuvre the boats but so far both teams seem to have decided on fixed positions for their grinders who won’t cross sides during tacks and jibes.


With foiling now established for the America’s Cup, a key focus for designers has been to make the foils more efficient. Once again designing the shape, width and thickness of the foil wing is a trade-off between speed and stability.

The path chosen by the two teams have been very diverse. Emirates Team New Zealand has two different foils: one with anhedral angle and the other one which is straight. American Magic, on the contrary, seems to have two very similar foils wings in terms of shape and that’s probably because the Kiwis are still testing solutions whereas the Americans having been sailing consistently with their test boat, might have already got to some key conclusions.








Given that we can expect the teams to build and test a multitude of shapes in the run up to the 36th America’s Cup there is probably little to be gained from too much analysis there at this stage.

After almost a decade, soft sails are back in the America’s Cup and a lot of effort has been put in by the teams adapting the twin skinned mainsail concept to the new Class Rule with the main difference between the two AC75 appearing to be the boom position in relation to the mainsail foot. The Americans sporting a conventional boom, whereas the Kiwis have opted for a deck-sweeper mainsail foot, not unlike those used on the latest A-Class catamarans.

Despite all their differences – in their bows, underwater sections, and other design features – it is worth noting that both boats were foiling (and seemingly stably) within hours of going sailing for the first time. That is a remarkable achievement for both syndicates and a testimony to both the designers and builders, as well as to the efficacy of the AC75 design rule itself.


And it seems we will not have to wait very long for the next two AC75s to see the first light of day. The Italian Official Challenger of Record Luna Rossa Prada Pirelli Team is scheduled to be the next to launch on October 2, with the British INEOS Team UK syndicate following suit two days later.

Could we see two more surprising design ideas on show then?

https://www.americascup.com/en/news/...IGNS-WHAT-NEXT