35th Americas Cup: Foiling Multihulls!

Discussion in 'Multihulls' started by Doug Lord, Sep 26, 2013.

  1. Doug Lord
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  2. Doug Lord
    Joined: May 2009
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    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

  3. Doug Lord
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    Doug Lord Flight Ready

    35th Foiling AC!

    From a previous post:

    In an interview at the A-Class World Championship, Melvin offered a glimpse of what to expect. Here are some of the bullet points:

    * Adjustable rudder angle: The AC72 restricted active adjustment of the rudder angle while sailing, which affected foiling efficiency. The new class of boat will allow active adjustment, which will improve foiling ability both upwind and downwind.

    * Stored energy: The AC72 allowed no stored energy, and while all systems were human powered, there were peak times on the race course when the grinders were heavily taxed. It is expected the new boat again will again rely solely on human power for the systems, but there may be a provision wherein some power can be held in reserve to lessen the peak periods.

    * Manpower: The class of boat is to be in the 60-65 foot range, which will reduce the crew needed to sail it, and the shore team required to launch and service it. Fewer people needed should reduce team budgets.

    * Performance: The design brief was for the new class to be no slower than 10% of the AC72 speeds. Tests indicate the new class could be similar in speeds downwind as the AC72, but a bit slower upwind. Melvin expects the speed difference to be visually difficult to discern, and the new class may even appear faster given its smaller size.

    * Foiling: Expect the new class to foil both upwind and downwind.

    * One Design: In the interest of cost savings, it is likely the wing will have some one design restriction. Of the major components, it is believed the wing provided the least amount of performance gain per dollar spent on design and construction. It is believed that the hull and foil systems will remain open and restricted only by the class rule.
     
  4. Doug Lord
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    Doug Lord Flight Ready

    35th Americas Cup

    The Cup will be in Hawaii--MAYBE: http://www.boatdesign.net/forums/mu...nounced-americas-cup-hawaii-2017-a-49856.html

    Excerpt from Scuttlebutt: read the whole story here- http://www.sailingscuttlebutt.com/2... Larry Ellison eyeing Honolulu for 35th Match

    Larry Ellison sat in the quiet living room of his Woodside home and talked about what comes next, after winning the America’s Cup for the second time in September 2013, an epic victory being called “the comeback of comebacks.”

    His vision for the next America’s Cup, detailed in a series of exclusive interviews over several months, involves the staging of regattas all over the world – leading up to the Louis Vuitton Cup, and the main event, the America’s Cup, likely taking place in Honolulu.

    This competition would be a departure from anything done before, and would mean that – unless negotiations turn around – San Francisco will not be the host city for the next Cup.

    While outlining his vision for the 35th America’s Cup, Ellison acknowledges that much needs to happen before his plan is a reality, and that Team USA CEO Russell Coutts remains actively – and earnestly – in talks with other venues, from San Francisco and San Diego to Newport, R.I
     
  5. Corley
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  6. Doug Lord
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    Doug Lord Flight Ready

    35th America's Cup

    From Scuttlebutt last night:

    Gino (Morelli) hosted a seminar at the Strictly Sail Pacific show on Friday, providing some additional insight into the next boat for the America’s Cup. Here are some bullet points from his presentation:

    - The design rule is completed. The boats are designed to sail in a range of 6 to 30 knots, but the final rig size will be determined when the venue is selected.

    - Reducing the size of the boat from 72-feet to 62-feet will reduce the loads by half, which will reduce structural costs.

    - The smaller size boat will require less sailing crew (from 11 to 8) and less support crew, thus reducing the budget needed.

    - Wing dimensions will be tightly specified, which will reduce design costs.

    - Hull shape will have more bow volume to improve safety.

    - Boats will foil on all points of sail.

    - Daggerboard adjustment will be simplified slightly to reduce costs, and rudder angle will be adjustable to improve foiling control.

    Here are some of Gino’s estimations going forward:
    - The design and build time is approximately 14-18 months.

    - The AC72 rule was designed for the boats to be transportable. The new rule is not, so he expects the boats to be glued together. Given the time frame, this could require their assembly at the venue.

    - While a flat sea state is preferred, Gino estimates the boats can handle a 6 to 7 foot swell as long as the peaks are far apart.

    Here is Gino’s prediction on what could be the big difference with the new design:
    Gino expects the teams to remain fully foiled through the upwind tacks. The team that can stretch the tack furthest, and keep the hulls up and out of the water the longest while heading straight into the wind before bearing away onto the new tack, could make significant gains. This technique should encourage tacking, and thus the races in AC35 could prove to be both high speed and highly tactical upwind
     
  7. Corley
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  8. Doug Lord
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    Doug Lord Flight Ready

    35th Foiling AC

    Great info. Apparently, they have decided not to deal with Juan K this time around.....
     
  9. Doug Lord
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    Last edited: May 10, 2014
  10. Corley
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  11. Doug Lord
    Joined: May 2009
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    Doug Lord Flight Ready

    35th AC

    An excerpt from tonights Scuttlebutt and some news: http://www.sailingscuttlebutt.com/2...p Bermuda being considered to host 35th Match

    Here is an excerpt from a statement by the Honorable Craig Cannonier, Premier of Bermuda…
    ——————-
    The Island is now one of four locations being considered by the America’s Cup Event Authority, which is the organizing body for the Cup’s 35th competition, the world’s oldest international sailing trophy.
     
  12. Doug Lord
    Joined: May 2009
    Posts: 14,135
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    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

  13. Doug Lord
    Joined: May 2009
    Posts: 14,135
    Likes: 123, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

  14. Doug Lord
    Joined: May 2009
    Posts: 14,135
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    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    Ac 35

    The rule has been released at www.americascup.com but is in a zip file format which I can't open-if somebody could convert it to a "normal" pdf file I'd sure appreciate it.
    A couple of AC 62 renders I've found:

    click--
     

    Attached Files:


  15. Corley
    Joined: Oct 2009
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    Corley epoxy coated

    Here is the extracted .pdf for the AC62 class rules
     

    Attached Files:

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