AC72 sail area reduction concept
[Source: Pete Melvin, AC72 Class Rule Consultant] To: Prospective America’s Cup teams, contributors to the rule, and other interested parties
We now have a suitable proposal to incorporate into the AC72 Class Rule regarding a wing area reduction method. After performing additional research into the feasibility of the previous 4m removable tip concept, we concluded that this concept would not significantly improve the safety and controllability of an AC72 in higher winds, and therefore eliminated the removable tip in the latest draft (2.0) of the AC72 Class Rule released Oct 6.
Attached are diagrams showing the wing measurement grid and conceptual sailplans for the standard and small wings. The small wing will effectively be very similar in profile of the standard wing but with the height reduced by approximately 10 meters. We believe this wing reduction method includes the following benefits over other choices:
1. A reduction of 10m in wing height will significantly improve the safety and controllability of an AC72 in higher wind speeds. The minimum hull-flying true wind speed is estimated to increase from approximately six knots (with the 40m wing and Code 0) to twelve knots with the 30m tall wing without headsail.
2. Competitors can utilize existing lower sections of the wing spar and simply add a new, smaller upper section of wing spar.
3. Competitors could convert a standard wing to the small wing while using as much of the standard wing parts as possible.
4. When a small wing is used, only one Gennaker is to be on board the yacht.
We recommend that the following also be implemented:
* Requirement for teams to have a small wing be delayed until late 2012 or early 2013. This may allow teams time to modify an existing standard wing.
* The Regatta Director to determine what wing is to be used by Competitors for a regatta or on days within a regatta.
* The Protocol be amended to allow for an extra two small wing mast sections be included within the wing spar limits and to allow the change from a full
wing spar to a small wing spar without that spar being counted as a new wing spar.
This does not limit teams to only two small wing spar sections but reflects the requirement to allow wing spar development over both wing configurations.
Please let us know your thoughts about this sail area reduction concept , and send your comments to me at the ACRM email address for class rules matters (classrule@americascup.com) by no later than next Monday, 11 Oct, 2010.
Labels: 34th America's Cup, AC72
21 Comments:
Who are "Prospective America’s Cup teams and other interested parties"?: It looks like nobody.
Who are "Prospective America’s Cup teams and other interested parties"?: It looks like nobody.
OK, but cut the max. number of wings allowed (rather than increasing them!) to level the playing field.
Don't be sarcastic guys, interested parties are: BOR+ML+nodoby else
another way to describe all this is "...we have no idea what we are doing so we just make it up as we go along (and hope everyone else buys what we are selling)...."
>> Who are "Prospective America’s Cup teams and other interested parties"?
Teams have not yet announced entries. They will not before the entry period begins in November.
oh, oh, someone is double-checking their calculations
hmm that just made it a lot cheaper - come one guys just admit u f... it up
Fuck these free riding BOR wankers that have cruised through the crisis one the back of Larry's Dime. Why don't you just make the fucking things a one-design
product and save the pretence of complying with the Deeds' design and build championship intentions.
Cocksuckers.
It is because nobody can step up to beat them in a real match. It is to try make it interesting.
ha ha ha, I love the crying leaners of the world. Look at the ESS and go for a 4kt cruise. WMRT, boring. The comments that fill valencia sailing with lead-loving BS, boring. Leaners are dinosaurs, just like all of you.
Larry, please, please stop this lunacy before it goes any further.
It's time for a reality check, because your guys are in fantasyland at the moment. The wing logistical requirements were impossible enough before, now you are going to have two different sized wings and require teams to switch when the wind comes up? And still stick to your TV mandated start times?
This is nuts, just admit it, throw away the winged cat and start again.
So how long will it take a team to switch from one wing to another? And how much dock and hardstand space?
Pete Melvin must regret ever taking on this job, he has been given a problem that has no good solution. But I guess it's hard to stand up to the two most powerful men in the AC and tell them that their dream will never work.
Look no further: These guys are on "recreational" drugs, that's the only explanation.
Oh! I am so much looking forward to Nov 1st to see Teams queing up at the BOR office to get admitted!!!.
Entry period... excuse me, there is no place yet, no rule yet (as it gets changed every other day)and no commercial feasibility at all, but pleanty of teams, sure...
Get things done properly and in the right order and you may have a change for some success. Get things done this way and the result is obvious, and we already saw it in the so amazing regatta that took place in Valencia last Feb.
Only ONE serious competitor is needed for a sucessfull AC. With ETNZ entering, that is a given. What else are you asking for??
The AC is a competition between two yachts and the clubs they represent and nothing else...
Yes, two teams is good enough for the case: the quicker the better.
Please please watch the Little AC videos and then please tell me if this was big fun , spectacular and close racing ....none of them
Hopefully TNZ and Artemis don't loose the plot and put their minds up with all this crazy ideas
I think some people still didn't get the point that the AC has still to be an attractive event in order to be sold , have spectators and the sailing world interested . The way it is setup is killing the Cup .
Some short minded guy says here you need only two Teams ...which is true ...but this won't be fun , won't be good for the sailing sport , won't be close racing and won't be interesting for the sailing world , sponsors etc etc
Ernesto was like an old softy lady compared with Larry....
What's this Cup got that turns everyone blind...
ML are like weak irresponsible dolls in BOR's hands. Sad, sad, sad...
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