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  #676  
Old 03-07-2017, 10:52 AM
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35th America's Cup on Foils! BAR

Team UK: https://www.youtube.com/watch?v=Yg12mtiRXpk
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  #677  
Old 03-07-2017, 05:16 PM
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35th America's Cup on Foils---Oracle

Tech Tuesday: https://www.youtube.com/watch?v=Xq_8qW50ghs
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  #678  
Old 03-08-2017, 12:46 PM
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Foiling Upwind(in 34)

Good video: https://www.youtube.com/watch?v=Dz2nV3eslEw
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  #679  
Old 03-14-2017, 07:47 AM
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35th America's Cup on Foils-- Team France

Martin Fischer on why Team France has a different foil on each hull:

http://www.catsailingnews.com/2017/0...last-ac50.html

Excerpt:


The foils are made up of two elements.
The upper section of the appendage called the SHAFT
The lower section is called the TIP.
The junction between the two is called the elbow or knee.
The class rule imposes a maximum number of Shafts and Tips:

On the training boat, the team can build 6 Shafts and 12 Tips
On the AC Class, just 4 Shafts and 8 Tips are permitted.
The lower section, the Tip, must not represent more than 30% of the foil weight, but its length is not restricted.

"Groupama Team France, like its rivals, is adapting the foils according to the wind ranges and is building two types:

Foils for light to medium airs, whose Tip is longer
Foils with a shorter Tip, optimised for higher speeds

Martin Fischer: “The rule does not require the boat to be configured symmetrically when racing. As a result, our port and starboard foils can be different. This is an interesting element, because when you run the race simulations, you notice that the course is not symmetrical. There’s more emphasis on starboard tack than port tack. There are two high-speed reaching legs on starboard tack.”
...




Picture by Austin Wong:

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Last edited by Doug Lord : 03-15-2017 at 11:54 AM.
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  #680  
Old 03-24-2017, 06:50 PM
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35th America's Cup on Foils!

Good footage of three AC 49.2 boats training:
https://www.youtube.com/watch?v=lMlfVUWFVGA
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  #681  
Old 03-25-2017, 07:39 AM
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35th America's Cup on Foils---Oracle

Oracle nails the mark-literally: https://www.facebook.com/21889303845...3624863651220/

https://www.youtube.com/watch?v=NWEMieGQwnI



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  #682  
Old 03-27-2017, 06:35 PM
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35th America's Cup on Foils-Martin Fischer-Team France on Foil Design

From Team France: https://www.youtube.com/watch?v=VPvnbF5Uagk
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  #683  
Old 03-28-2017, 07:32 AM
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35th America's Cup on Foils!--Noteworthy Trickledown

From Scuttlebutt Europe and Seahorse Magazine--excerpt:

(Noteworthy) Trickledown
It's not all about solenoids, actuators and electronic feedback... Harken's Air Winch is one of the exciting early spin-offs from America's Cup 2017
Much has been said about how the new multihull America's Cup has not contributed much to the development of mainstream big boat racing, and this is not untrue: very little of all that clever work that went into spar, sail and boat design and fabrication over decades of Cup racing is being developed any longer to produce a trickledown benefit for the larger racing audience that still enjoys monohull racing. However, there is one supplier to the AC programmes who has been consistently adapting to the new platforms and tenaciously innovating to find solutions, and some of these ideas have proved to offer tangible benefits to the broader racing public: Harken.
A lot of focus has been placed on faster hydraulic systems to transfer energy in the controls on AC foil and wing systems, and Harken is a clear leader in this field. Yet Harken has also been active on more traditional line-handling systems, of which the Air Winch is one of the most significant innovations (Air Winch was a category winner at the 2016 Dame Awards - the most important competition for new concepts and designs in marine equipment).
Developed to handle the single 'mainsheet' to the wing on the AC50, the Air Winch had to deliver a light, strong, reliable and versatile all-inone package. 'During the last Cup the teams used different models of our winches for the wing - a sure sign there was an opportunity to develop a dedicated winch for wing trimming,' said business director Mark Wiss.

Full article in the April issue of Seahorse:
www.seahorsemagazine.com
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  #684  
Old 03-28-2017, 07:45 AM
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35th America's Cup on Foils---Oracle--BMW Technology Transfer

Series of videos by BMW:

https://www.youtube.com/watch?v=WF-9ctpBI3Y


https://www.youtube.com/watch?v=p6XQ2wmQdtQ


https://www.youtube.com/watch?v=Pg726BRCUTM
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  #685  
Old 03-28-2017, 05:36 PM
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35th America's Cup on Foils---Oracle

Tech Tuesday: https://www.youtube.com/watch?v=gVDLwug-XlI
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  #686  
Old 03-30-2017, 08:52 AM
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35th America's Cup on Foils! Artemis

Artemis nose down:

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  #687  
Old 03-30-2017, 11:42 AM
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35th America's Cup on Foils!--Broken Foils-and the Rule

From http://www.catsailingnews.com/2017/0...nges.html#more
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  #688  
Old 03-31-2017, 05:11 PM
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35th America's Cup on Foils! TNZ-----Kiwi Dreaming

Great audio-April 1st in New Zealand:
http://www.newstalkzb.co.nz/on-air/s...-but-exciting/
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  #689  
Old 03-31-2017, 05:44 PM
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35th America's Cup on Foils! TNZ (on April 1st)

From Scuttlebutt Europe:

Have The Kiwis Mastered Anti-Gravity?

Spying on other teams is as old a tradition as the America's Cup itself. But never has a surreptitious photograph so shocked the world of performance sailing as the one shown at right(see below). It appears to show the Team New Zealand ACC foiling... while standing completely still.
The photo, circulated by an unnamed member of ORACLE, is visual confirmation of rumours swirling around Auckland docks and the physics department at the University of Woolamaloo.
"Those cyclists in the hulls? A lovely little distraction, that. Kept the entire membership of SINS blathering away for weeks while the real breakthrough was right in front of their eyes" said Professor Bruce B. Bruce. "If nautical journalists in Auckland had held off on the gin until after lunch, just once, they might have noticed that the height of TNZ hulls above the water never varied once they rose from the surface... regardless of wind strength or direction. And that the hulls dropped right down even when the wind did not and sail trim did not alter. Hullspeed hasn't a bloody thing to do with these foils. Gravity waves and quantum entanglement are what's going on."
Scuttlebutt Europe has independently confirmed sightings of the hulls rising and falling at the dock, in one instance when the rig wasn't even stepped on the hull. Swarms of dockhands staring into tablets and clutching clipboards are an unusual enough sight... more so when they're clad in lab coats and pocket protectors. "Don't look much like the usual BNs" muttered the ORACLE source.
"We aren't going to need a lot of practice time in Bermuda" smirked syndicate head Grant Dalton.
"We've got a few tricks up our sleeves and are confident that we'll leave with the Auld Mug in hand. We expect the usual squealing and whinging from our vanquished competitors. Looking forward to not giving a single flying feck".


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  #690  
Old 04-01-2017, 04:24 PM
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35th America's Cup on Foils!

More from Scuttlebutt: http://www.sailingscuttlebutt.com/20...-cup-defender/
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