Foiling Monohull - what would it look like?

[Mozzy Sails]

The building was largely paid for by a government grant to promote marine industry in the Portsmouth area after the loss of key defence contracts at the local BAE facility. 

Southampton and Portsmouth were effectively in a bidding war to get the team base. Portsmouth offered to fast track the planning application and central government offered up the grant to show it was supporting the local area after transferring shipbuilding contracts to the Clyde (in a possible political play regarding indyref). 

There was a lot of talk about creating a sustainable team and adding to a Solent hub for marine expertise which was obviously linked to local and national government support. No such overtures from INEOS yet... but then I don''t get the impression they require the grace of government grants in the way Land Rover did. 

 

[Britanniawaivestherules]

 

[Robsi524]

^^wow

 

[hoom]

Gonna be real interesting to see if this works.

I wonder if ETNZ have had any input?

Heresy! I hear you scream and normally I'd agree h34r:

But its in the interest of ETNZ to make sure their concept works so I think it makes sense to offer some design detail & get back some real-world data that'll help in finalising the OD bits, maybe tweaking the rule.

 

[Rasputin22]

Love the fender strapped to the mast at the top for 'anti turtle' device. 

 

[bad sandwhich]

I assume the other teams are doing this as well right? I mean, actually making a boat that goes in the water? 

 

[Boybland]

Rather crude foil design imo..... they used up all the R&D wonga on that building. ETNZ use tents and containers. Guess what they have: a cup. In all seriousness though, I don't think it was an RC44 and it's gonna be cool to see that thing sailing around the solent during the summer. It'd be nice to have better quality photos of those foils, never judge a book by its cover y'know.  Right now, they look crude enough to accurately reflect INEUK's performance in the last cup...

They are first to water in a game where time is one of the most critical currencies you can earn, I am guessing that was their primary focus.

For all it's ugly duckling looks I'm pretty excited to see this thing actually sail though! finally seems like things are getting real.

 

[Tornado-Cat]

They are first to water in a game where time is one of the most critical currencies you can earn,

We don't know if another team is already testing somewhere.

 

[Rudder_NZ]

Yes - it really IS/Was the Q28, well suited as it has the right proportions and displacement.  Now has a foredeck, rig swiped off a production multihull, plus the assorted AC bits....there was only ever one Q28, and this is it. We did multiples of the Q30 and those are still all racing the lakes.

Any ideas on how to make this thing quicker upwind? I believe she is one on yours.

The previous owner lengthened the keel. She now has 4 trapeze per side and I have taken the foil off as it worked well tight reaching but not around a race course. 

If ETNZ want to chop her up and make her fly they are welcome to. However I think it is too heavy and not stiff enough. 

In this article I believe it is the machined polystyrene prototype mentioned. 

 

[hughw]

The 27 lives!   well well, that was the first trial horse we did waaay back in 2006, yes, machined polystyrene, glass skinned, was actually a scaled hull of a 30m design we had tank tested so then had tank plus real life data to compare and see what was really happening. 

Anyway, thats why the boat is so skinny, we tried two foils on that and then had a real basis to move onto the 'Brace Brace' 25 and then the Q28.   Would have been good to have built a nice light carbon version of that and carried on with foil developments, but that boat sailed a lot of miles, first on Garda and then later on off Sotogrande where we could see what happened in real offshore conditions.

Best thing for the boat would be a much lighter rig - that mast is extremely heavy...but then yes, longer carbon fin with a bit of weight on the end would help as well.    We were on a very tight budget to put it mildly but the boat proved everything we need to know in the early days.   Easy to do much better foil for it now, and as a hull it does exactly what it's supposed to do - later on that design logic found it's way into HiFi 52 for Neil Pryde  that cleaned up in Asia and more recently the 46' Maverick.

Good to see the boat though after all this time - one thing, it'll never sink!

 

[dachopper]

Looking at the concept again, gonna be tricky getting the foils to sit at the right takeoff attitude , meaning before takeoff when the yacht is rolling but the keel position is fixed, that foil gonna sit on a 5maybe 10 degree angle with no winglets. enter . Spanwise flow

 

[Boybland]

Interesting with foils mounted that high up the sides, do you even bother trying to seal it or do you just punch through to a self draining cavity open to the deck on the assumption it's just not going to spend that much time below the line.

 

[nav]

^ Just a test boat, but since the AC75 will not use the deck rams (AFAIK) they will not have the option of a self draining cavity open to the deck anyway right?

No 3D rig worked out yet either........

 

[JMOD]

this is off the pictures I shot last Friday. 

https://www.sailingillustrated.com/single-post/2018/06/23/AC36-Another-photo-of-Sir-Ben-Ainslies-INEOS-Team-UK-surrogate-foiling-monohull-this-one-while-under-tow-on-Friday

 

[Tanton Y_M]

Team USA 2021 is launching this All-American Challenge.

 

[Boybland]

^ Just a test boat, but since the AC75 will not use the deck rams (AFAIK) they will not have the option of a self draining cavity open to the deck anyway right?

No 3D rig worked out yet either........

Yes I wasn't really thinking about the AC75 in that context, more the general concept of these boats, especially at the smaller end of the size scale.

 

[hoom]

Team USA 2021 is launching this All-American Challenge.

View attachment 274876

In the thumbnail I thought it looked like they put planing strakes on the hull :blink:

Then I realised its just the NURBS lines...

 

[Tornado-Cat]

The only related point to this thread is the monohull and some actors of the AC

Congratulations to Charles Caudrelier, Pascal Bidégorry , Caroline Brouwer (Darren Bundok was not racing) and all the Donfeng team for winning this most amazing VOR.

Peter Burling was third on Brunel, they were amazing too, but not as much as Caudrelier. All the best on them.

Caudrelier is the young guy who used to throw the gennaker alone, by night, with 40 kts of wind during his first Le Figaro races. He is now the first on monos on a world level.

https://www.volvooceanrace.com/fr/home.html

 

[Purple Headed Warrior]

Somebody took these pictures and posted to facebook this morning. Anyone want to venture what hull they took to frankenengineer? 11 meter?

I have to say, as a very much no supporter of Land Rover BAR....... Sorry sorry, INEAOS TEAM GB...... oops....... INEOS TEAM UK, I am pretty excited by these images. It is going to be great to see something splash in the water and "prove" a concept....

This is a real turning point for the next AC and if this possibly works it could be all on!

 

[Tornado-Cat]

Right.

My guess is that the next AC will be an historical flop or success.

A flop if the boats are expensive, slow, and don't trickle dow

A sucess if the boat has the speed of a multi, the safety of a mono, and trickles dow.

We should know soon, pretty exciting.