st599
Well-known member
NYYC falling from ~2x normal height on to water caused the frame to punch through the hull.
I reckon a pointy bit hitting a flat bit would be pretty catastrophic.
INEOS AC 2-0
- Thread starter Ningaloo
- Start date
NYYC falling from ~2x normal height on to water caused the frame to punch through the hull.
I reckon a pointy bit hitting a flat bit would be pretty catastrophic.
kingfisher
Well-known member
carbon is very brittle. It would be like smashing 2 packs of instant noodles together. Shards flying everywhere.
LONG_KEELER
Well-known member
Thanks chaps. Just hope that they never hit each other.
Think I might go then for the radio controlled Serpentine model.
Think I might go then for the radio controlled Serpentine model.
Wansworth
Well-known member
America back ready to go?
Laser310
Well-known member
Kukri
Well-known member
I think the semis will be close and hard fought. I think we can assume that Ineos will get their Cunningham sorted (?) and will tweak a few other bits before the final.
But I think that in March NZ will have a huge advantage in boat speed They know an awful lot about these sails.
By the way - to settle a discussion going on in my club - is the inner wheel on Britannia to vary the rudder rate from coarse to fine, or does it do something else?
But I think that in March NZ will have a huge advantage in boat speed They know an awful lot about these sails.
By the way - to settle a discussion going on in my club - is the inner wheel on Britannia to vary the rudder rate from coarse to fine, or does it do something else?
flaming
Well-known member
Nobody seems to know.... And those who do aren't telling.
I think rudder rate is the most likely explanation that I've heard, but I'm not 100% convinced.
Bobc
Well-known member
Loving the plasters
Bobc
Well-known member
New foils on ETNZ. They certainly look interesting. Quite small, which should make for good top speed but it'll be interesting to see how much lift it gives them in the lighter stuff.
Kukri
Well-known member
I think those tell us that ETNZ are well ahead in sail technology. I think those foils will be faster but will need more horsepower to unstick and I think the defenders have gone for them because they can control their sail shape better so they will be able to unstick them sooner.
flaming
Well-known member
This video is well worth a watch to understand the different approach that TNZ seem to be taking.
bedouin
Well-known member
Those look a bit clever don't they
Kukri
Well-known member
I have seen something to the effect that the delta shaped foils used on “Britannia” are used to conceal the hydraulic rams and linkages (there’s always loads of room inside a delta wing) and not because of speed because in terms of Reynolds Numbers these boats are flying at about the speed of a fast glider only. “Supersonic” is still quite far away.
flaming
Well-known member
Yeah, seen similar. If you look at the video I posted above, the suggestion is that the kiwis, by finding a loophole that allows them to have only 1 flap in effect, will only need 1 actuator and therefore have a lot less stuff to hide.
The flip side is that they then need that bulb to make the mass of the foil up to the 921kg that it has to be.
What the Kiwis have now though is a lot of data on the performance of the challengers. If I was their design team I'd be saying "add 5% to the number we saw from the round robins, that's where we need to be". The challengers however don't have anything like as accurate data on TNZ. The 1st beat in March is going to be so exciting.
I await with interest what foils INEOS declares for the Prada final. Those W foils are such a departure from anything the other teams seem to have tried, be weird if they were just a dead end...
In the meantime bring on the racing this weekend, such a great thing to have to look forward to in the midst of a cold, grey, lockdown winter.
Laser310
Well-known member
LR looked good today...
here is a screenshot of the ports starboard protest against INEOS that I got from the virtual eye replay
This shot is at the instant before LR turns up
both boats are going the same speed
it's completely clear that INEOS is crossing ahead
That doesn't mean that LR might not have believed at the time that they should take avoiding action - just that in the end, with the knowledge provided by this kind of data,
it wasn't needed
here is a screenshot of the ports starboard protest against INEOS that I got from the virtual eye replay
This shot is at the instant before LR turns up
both boats are going the same speed
it's completely clear that INEOS is crossing ahead
That doesn't mean that LR might not have believed at the time that they should take avoiding action - just that in the end, with the knowledge provided by this kind of data,
it wasn't needed
anoccasionalyachtsman
Well-known member
AM looked as if the control system was acting up. They seemed unable to control the heel properly as they powered up, and at the top of leg 1 in race 2 the main went from just below centre to well to windward during the bear away.
LONG_KEELER
Well-known member
It was nice to see them sailing again and to see how the boats are managed in heavier winds.
You feel that AM have to find a way of putting the Italians under pressure to perhaps force some errors.
anoccasionalyachtsman
Well-known member
Let's hope it is just a fixable boat problem.
Kukri
Well-known member
Since Ineos came back from last place to finish first, I’m assuming that American Magic will do the same. Which is silly.
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flaming
Well-known member
Funny, I have the same thoughts.
Though also based on the way that LR have seemed to be trampling all over the Karma gods with their rule revisions / clarification requests.