Emirates Team New Zealand.

Indio

Indio

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Auckland
Sailbydate said:
Yeah. But maybe there's also a 'Damn" in there too. If things he's let go are the ones that prove the original concept a winner?

Bernasconi obviously thinks Brtiannia's flat wide run aft is the bees knees, for example and he's found an extended use for the slab sides, coupled with a lowered deck.
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I rather think that Holroyd and Bernasconi would have arrived independently at their respective design decisions through their naval architectural engineering expertise and sound design principles and simulations. As would have LR's and Team-NYYC's designers.

Their design directions were always likely to converge - you can't argue with physics..

 
B

Boybland

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Morioka, Japan
One thing I do love about the ETNZ boat. 

The shape is so defined and clean that you can just about see air flowing over it, even when it's stationary!  You can almost see how all the biyts working without even seeing it in action!

It's not pretty, but it certainly looks effective!

 
H

Hemi

Member
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SF
This boat is pretty impressive. Those people losing their minds that she's like Ineos B1 clearly aren't the most observant folks out there. There are zero similarlites beyond a brief section of slab sides about two thirds the way back. That's where the similarities starts and end IMO. The aero is super impressive. Crew tucked into the cowlings either side (not sure if this is the right word). You can clearly see how the whole hull form is like a wing with a moth-like canoe volume hanging off the bottom, that blends with generous flat in the bow. The angle of the bottom volume gives a good suggestion of the intended sailing trim. Wonder if by lowering the deck as they have done gains sail area? The mast pivot is on a raised pedestal by the looks of it. Fascinating to think that when ETNZ claimed Te Kahu was a kind of B1.5, they weren't lying. The complexity down the centreline on the canoe volume is interesting. Are the little convavities and strake thingee about quick release or what? Also, to those who think there will be no trickle down from this incredible moment in AC time are not open minded enough. I have always felt like foiling cats seemed a little awkward and illogical. I believe what we are seeing here is the future of foiling hull forms. We are in the midst of another great leap, another paradigm shift in sailing I reckon. Man I love this stuff!!

 
Sailbydate

Sailbydate

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12,435
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Kohimarama
Indio said:
I rather think that Holroyd and Bernasconi would have arrived independently at their respective design decisions through their naval architectural engineering expertise and sound design principles and simulations. As would have LR's and Team-NYYC's designers.

Their design directions were always likely to converge - you can't argue with physics..
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No disputing that. My musing was, might Nick have any regret not having more conviction in some of his original Britannia design choices, he seemed to abandon with his B2 design.

 
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The_Alchemist

The_Alchemist

Super Anarchist
3,207
1,759
USA
enigmatically2 said:
Fair point, you mean like this airflow diagram where it creates lower pressure below the hull?

View attachment 407363

That is from GB 1 and isn't tunneling
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Which is what Am Patriot is design for:

AM Patriot 53.jpg

 
Sidecar

Sidecar

…………………………
3,435
1,822
Tasmania
enigmatically2 said:
Sidecar said:
If you are heeled to windward, you have righting moment to spare? And the “lift “ helps hold you up?
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If you are out of the water then you have enough lift, and more lift (especially on windward side) will reduce RM
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And when you are heeled to leeward, it will increase RM. in other words it has an inherent self levelling aspect to it which should also help maintain ride height, making it faster and easier to sail due to less foil adjustment?

 
H

Hemi

Member
133
109
SF
Hemi said:
This boat is pretty impressive. Those people losing their minds that she's like Ineos B1 clearly aren't the most observant folks out there. There are zero similarlites beyond a brief section of slab sides about two thirds the way back. That's where the similarities starts and end IMO. The aero is super impressive. Crew tucked into the cowlings either side (not sure if this is the right word). You can clearly see how the whole hull form is like a wing with a moth-like canoe volume hanging off the bottom, that blends with generous flat in the bow. The angle of the bottom volume gives a good suggestion of the intended sailing trim. Wonder if by lowering the deck as they have done gains sail area? The mast pivot is on a raised pedestal by the looks of it. Fascinating to think that when ETNZ claimed Te Kahu was a kind of B1.5, they weren't lying. The complexity down the centreline on the canoe volume is interesting. Are the little convavities and strake thingee about quick release or what? Also, to those who think there will be no trickle down from this incredible moment in AC time are not open minded enough. I have always felt like foiling cats seemed a little awkward and illogical. I believe what we are seeing here is the future of foiling hull forms. We are in the midst of another great leap, another paradigm shift in sailing I reckon. Man I love this stuff!!
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* "blends with generous flare in the bow"

 
J

JALhazmat

Super Anarchist
4,833
1,841
Southampton
Stingray~ said:
from https://i.stuff.co.nz/sport/americas-cup/123454881/americas-cup-team-new-zealand-see-new-boat-going-well-over-50-knots-and-the-envy-of-opposition

There was obvious pride in the Team New Zealand crew with what their designers and boatbuilders have given them and Ashby was wondering what their opponents were thinking.

“I’d love to be a fly on the wall at the other bases to hear their conversations on what they have seen roll out of the shed here.”
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Stay humble glen... 

 
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