Understanding Wing Technology

Discussion in 'Hydrodynamics and Aerodynamics' started by Doug Lord, Sep 18, 2010.

  1. high on carbon
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    high on carbon Wing Nut

    Well for the teams outside of Canada Sponsorship is a big deal, they need money to make the wheels turn for their teams. No two ways about it.

    Personally I would have liked it at a different time but this is how it is going for now. things might change in time, but who knows.

    Being right before the cup is not the end of the world if it lies between the challenger series and the cup final. That will be a media dead spot for a little while anyhow.

    We obviously want participation but we also want fans, followers and friends to enjoy the event as well. So the timing could be good if we are filling that quiet spot in the narrative of wings with boats.

    Any later and we fully risk having way too much breeze as was the case for the I-14 worlds this year. at least 7 days of racing lost to hurricanes and gales, and those guys will sail in more breeze than we will for sure. Any earlier and we are overlapping with the challenger selection series which would completely steal our spotlight.
     
  2. high on carbon
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    high on carbon Wing Nut

    "As such, if they get little interest from "the outside world" it might not be a big deal. "

    I would also contest your "Little interest from.." notion.

    At the last event we came up just shy of one million page views on day one of the event (LAC). Total viewership for the event was incredibly high for such a "small" event.

    I would imagine we can do a good deal better this next time around, which again, is good news for event and team sponsors. Lets hope that cell networks in Falmouth can keep up with our streaming media requirements for broadcast.

    If you think about it, this event is an awesome media "Appetizer" for the main AC event in SF shortly thereafter.
     
  3. Doug Lord
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    Doug Lord Flight Ready

    Lac

    ==============
    Well, I sure hope it works out! Gotta see Steve win it back!
     
  4. high on carbon
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    high on carbon Wing Nut

    Not if I have anything to do with it!
     
  5. Doug Lord
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    Doug Lord Flight Ready

    Lac

    Well, I want to say good luck but it is my patriotic LAC duty to add a qualifyer: "Good Luck!(with everything before and after that particular regatta)".
    PS-any news that you can make public about Martin Fischer and the French challenge?
     
  6. high on carbon
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    high on carbon Wing Nut

    Nope, nothing to report. Martin dropped off the radar when I said "we don't mail out CAD plans of our boats". Seems some people don't like to do their homework, or perhaps he is simply busy with other projects....

    Martin, you there?

    I have also heard noise from Australia, Sweden, the middle East, England (not Invictus team) and the Italians who now have a flashy web site about their endeavours. I'm looking forward to see who makes it to the start line.

    Not to count SHC out, he will be there in fighting form without a doubt.
     
  7. P Flados
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    P Flados Senior Member

    I am sure that for many potential teams, sponsorship could make the difference. It would be great to see some "average Joe" team get some help and make a run on the existing players.

    I was just basing my comments on the more recent history. Poking arousn, I found "Yellow Pages" all over a down under boat a while back, but otherwise do not remember much in the way of Logos on the boats of the more recent races.

    Kind of a shame given the "absolute cutting edge" reputation of the this class.
     
  8. Steve Clark
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    Steve Clark Charged Particle

    The questions surrounding sponsorship are at least as complex as those surrounding wing design. How to get someone else to pay for it is always a problem on those parts of the earth inhabited by humans.
    SHC
     
  9. P Flados
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    P Flados Senior Member

    Some have a knack

    Some work at it

    Some get lucky

    Many (or possibly most) come up short

    At least a C Class has plenty of wing surface that will nicely display a Logo.

    Also, I am betting that most wannabe C Class teams just need cash to support building the boat & buying associated hardware. That and probably a little help with getting to the race.

    Compare this to the other winged multi competition where the entire team is on a payroll, they have the boat handed to them and they have an entire support team to care of the logistics.

    It is just does not seem fair that the AC teams seem to be able to get so much, and yet many C Class efforts would be made possible for probably less than an AC team can spend in one week.

    Then again, no one said life would be fair.
     
  10. Doug Lord
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    Doug Lord Flight Ready

  11. petereng
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    petereng Senior Member

    Hi All,
    Last week I did a presentation to the Multihull Yacht Club of Queensland on hull design. Heres the presentation slides. The presentation is about 40 mins long. I started talking at 8:30am and was still going at 11:00pm so had to quit, got home the next day! I like them as they are an excitable and enthusiastic lot.

    Have a Happy and safe Christmas & New Year. I'm away for 3 weeks, then the C is on. Cheers Peter S
     

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    Last edited: Dec 10, 2011
  12. Doug Lord
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    Doug Lord Flight Ready

    ================
    Clysar is used on AC 45's per this:

     
  13. Leo Lazauskas
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    Leo Lazauskas Senior Member

    Peter,
    You have a a very beautiful set of graphics for your talk, but the one labelled
    "Michlet" is misleading. Michlet's calculations don't include the near-field
    waves so I suspect that graphic was produced using another program.

    All the best,
    Leo.
     
  14. Silver Raven
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    Silver Raven Senior Member

    G'day Doug. Hello everyone. Simple question I have so I can better evaluate the worth of everyones information & the base that they are comming from.

    How many people in here have: designed, built, sailed, tuned, & won races with a full size wing-mast that has been successful over a period of at least 5 years?

    Please & thank-you. james aka 'jj-geri-hat-trick' from down under.
     

  15. Doug Lord
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    Doug Lord Flight Ready

    Uwt

    ==========
    Not me........But I've worked with various experimental rig designs on models and full size since the early 70's. I'll show you mine if you show me yours:

    Pictures L to R from the top: 1)15' Tantra rig-square top "gaff" rig with buoyancy. No diagonal batten, upper outhaul(at "peak") adjustable. One of the first square top mains in the US. Definately the first made by Johnson Sails(Clint Johnson) in 1974, 2) Model using "wing tip" rig with squaretop main and jib both supported by gaffs. On models this allowed a great planform w/o requiring an upper diagonal batten or full length battens, 3) America One(first rc production spinnaker boat) with square top main supported by a "gaff"-upper outhaul and peak adjustable-1994, 4) full size "wingtip" rig on 16' aeroSKIFF foiler with square top jib set with a small gaff. As on #2, allows leading edge of jib at top to rotate slightly to weather. Upper outhaul adjustable, 2003 5) F3 RC foiler(first production RC foiler): main used a rotating "gaff" whose bottom end was inserted in a bushing at top of mast. "Peak" was adjustable along with an upper outhaul. Allowed good planform w/o diagonal or full battens with unprecedented adjustability of the upper part of the sail- 1995:

    click on image-
     

    Attached Files:

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