Luna Rossa Challenge. AC 36

[Tornado-Cat]

Looks a bit WWII German fighter plane...

Or a B52

 

[Raptorsailor]

12 hours ago, Stingray~ said:

Italian Prime Minister Conte

can anyone translate?

 

[sail(plane)]

View attachment 324895

Check out the sharkmouth!

No, those are external fuel tanks

 

 

[ollallero]

can anyone translate?

he says nothing interesting for sailing...
just political response about job opportunity in shipbuilding field
and some jokes about his willing to sail the boat...

 

[Xlot]

Whoa, that rudder is way thinner than the dock line, and it has to hold 75' of boat in the air.

Designed by the same people who did the first foil arm iteration. What could possibly go wrong?

 

[WetHog]

Hmmm. I don't think there will be a lot of downspeed action in the start box - apart from the old hook, maybe. Displacement mode would be fully fatal against a foiling opponent. Much like the AC50 action I'm picking. Unless these boats can launch onto their foils with relative ease (and we've not seen any indication of that at this stage).

No pinning against the start line if one boat is early?  You very well may be right but then again none of us have seen these boats perform anywhere near what they will have to perform at once race time comes.  I just can't see how getting an opponent off their foils can't be a viable tactic.  

The 3 boats we've seen so far have chosen their hull shapes for a reason.  AM at one end of the spectrum and ETNZ at the other with LR in the middle.  My guess is AM feels as you do with ETNZ, at least with boat 1, feeling different.  Hull shapes of boat 2 will tell the tale.

WetHog   h34r:

 

[Stingray~]

 

[Stingray~]

Nothing new but interesting



Luna Rossa and the secrets of that long keel


https://www.giornaledellavela.com/2019/10/03/luna-rossa-varo-ac-75-americas-cup/?fbclid=IwAR1SrjIvJaXJJ62l3NVpT2_XlU4UQE3mfTQ8oELgjsArPfF8CSd0MQGviwc

Gtran

https://translate.googleusercontent.com/translate_c?depth=1&nv=1&rurl=translate.google.com&sl=auto&sp=nmt4&tl=en&u=https://www.giornaledellavela.com/2019/10/03/luna-rossa-varo-ac-75-americas-cup/%3Ffbclid%3DIwAR1SrjIvJaXJJ62l3NVpT2_XlU4UQE3mfTQ8oELgjsArPfF8CSd0MQGviwc&xid=17259,15700023,15700186,15700191,15700256,15700259,15700262,15700265,15700271&usg=ALkJrhhc1YT9iHnGpCj7F2Ab_z7orjP29Q

 

[WetHog]

Gtran

https://translate.googleusercontent.com/translate_c?depth=1&nv=1&rurl=translate.google.com&sl=auto&sp=nmt4&tl=en&u=https://www.giornaledellavela.com/2019/10/03/luna-rossa-varo-ac-75-americas-cup/%3Ffbclid%3DIwAR1SrjIvJaXJJ62l3NVpT2_XlU4UQE3mfTQ8oELgjsArPfF8CSd0MQGviwc&xid=17259,15700023,15700186,15700191,15700256,15700259,15700262,15700265,15700271&usg=ALkJrhhc1YT9iHnGpCj7F2Ab_z7orjP29Q

A detail that could prove to be important, for example in pre-start circling , where boats will sail in mixed conditions, of foiling and displacement. When, for example, there is to block the opponent in a downwind engagement, having a boat that manages to slip just shortly will "close the door", or on the contrary if Luna Rossa will have to defend itself from a boat that attacks from downwind to be able to luff better without slipping, or jamming less, it represents an extra card. We remind you that in the new match race formula the start will be back upwind, so we will see some bracing stops and boats that will have to start from a standstill when the lift of the foils will be zero until the boat returns to accelerate. It will be interesting to see what angle of rest, and how far, they will need these boats to start from a bow to wind and reduced speed. The more this angle is reduced the more the boat will be maneuvered and agile in the delicate phases of prestart.

WetHog   h34r:

 

[Xlot]

  ^ In this connection, it so happens I owned a Dart catamaran not many decades ago - long keel, skeg and all. I therefore feel qualified for the LR helmsman role and expect to be offered the position in the near future

 

[Purple Headed Warrior]

  ^ In this connection, it so happens I owned a Dart catamaran not many decades ago - long keel, skeg and all. I therefore feel qualified for the LR helmsman role and expect to be offered the position in the near future

you can stand there cracking the whip... "Grind Jimmy Grind!!"

 

[Tornado-Cat]

Designed by the same people who did the first foil arm iteration. What could possibly go wrong?

 

[Ex-yachtie]

Twist grips on the wheels as well 

You wouldn't expect Jimmy to relinquish any control, would you?

 

[Xlot]

Looking at AM’s and LR’S teeny foils - and to the repeated mention of 8 kts TWS as the minimum for foiling - until further notice, 8 kts is supposed to be the minimum for foiling when the boat is already up on the foils. But for taking off, the only forecast is still the very first AM’s VPP, with the boat doing 16 kts on 12 kt TWS

With the boats now sailing, we’ll soon have an update on that - but with all the towing being done, it’s not like a much lower wind speed will be found suitable

 

[Tornado-Cat]

8 kts is supposed to be the minimum for foiling when the boat is already up on the foils. But for taking off, the only forecast is still the very first AM’s VPP, with the boat doing 16 kts on 12 kt TWS. With the boats now sailing, we’ll soon have an update on that - but with all the towing being done, it’s not like a much lower wind speed will be found suitable.

We don't know wind limits yet, teams have to build boats without knowing if they have to favor the lower or higher end, or both.

And I don't know if the rule will allow boats to be towed before the race... Seems impossible,  but it's the AC after all.

 

[wlrottge]

Pretty sure the little lumps are some kind of protector, they are not present in other photos. But the fences vary in size dramatically between the two foils.

I'd guess that it's a foil actuator

 

[Stingray~]

  ^ In this connection, it so happens I owned a Dart catamaran not many decades ago - long keel, skeg and all. I therefore feel qualified for the LR helmsman role and expect to be offered the position in the near future

I wonder how much if any yaw the boats will have while flying. A touchdown with both yaw a ‘skeg’ could be, umm, exciting..

 

[The_Alchemist]

6 hours ago, Stingray~ said:

Similar to what I said right after they showed the new foils.  They may have delayed the launch in order to redo their first set of foils.  If UK shows torpedo foils, that could be why they had such a delay.  AM may have let the cat out of the bag too soon.

 

[Stingray~]

Similar to what I said right after they showed the new foils.  They may have delayed the launch in order to redo their first set of foils.  If UK shows torpedo foils, that could be why they had such a delay.  AM may have let the cat out of the bag too soon.

Agreed, AM may have absolutely nailed it wrt trying forever-foil-wings designs and forced LR to take the same path. OTOH they may have reached the same rules conclusion rules-wise early on and the delay was for other reasons. In one video an LR designer, while describing the redesign and building of the V2 arms, flat out admitted how all that work had impacted LR’s progress for also building B1. 

Guess we’ll see with the launch tomorrow if there’s a chance the Frackers went with torps too, possibly including for that same reason.

Basiliscus? Got any insights please? TE had Brit Ward on recently, wish you would share an hour for us with him too.

 

[Liquid]

Similar to what I said right after they showed the new foils.  They may have delayed the launch in order to redo their first set of foils.  If UK shows torpedo foils, that could be why they had such a delay.  AM may have let the cat out of the bag too soon.

I doubt a a new set of foils can be built in a few weeks...