| Re: AC72 Oracle Team USA Spaceship has landed
[Re: Angelo190471]
#253023 10/03/12 06:29 AM 10/03/12 06:29 AM |
Joined: Aug 2003 Posts: 351 Santiago, Chile Andinista
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Posts: 351 Santiago, Chile | notice how much the boat shakes when it foils! 3:28 Yes, the leeward hull moves up and down with the waves and the other one remains steady. And on 2:50 both hulls seems to point in different directions. Flexibility? | | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: Andinista]
#253087 10/03/12 08:13 PM 10/03/12 08:13 PM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
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Posts: 12,310 South Carolina | notice how much the boat shakes when it foils! 3:28 Yes, the leeward hull moves up and down with the waves and the other one remains steady. And on 2:50 both hulls seems to point in different directions. Flexibility? I think it's safe to assume that Oracle has determined that platform flex is not that big of a deal. It seemed that way with the big trimaran too. The other teams have gone to great lengths with the posts and rigging to stiffen up the platforms at the cost of weight and wind drag...better or worse? dunno.
Jake Kohl | | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: P.M.]
#253091 10/03/12 09:33 PM 10/03/12 09:33 PM |
Joined: Mar 2009 Posts: 932 Solomon's Island, MD samc99us
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Posts: 932 Solomon's Island, MD | Very exciting. And very very interesting. On small boats (under ~30') the moto has always been stiffer is faster. It seems the bigger the boat and the faster you go some give might be faster (lighter), or at least your boat might not blow up (ala nomex cores in the southern ocean)? Definitely be exciting to watch the races, that is for sure!
Scorpion F18
| | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: samc99us]
#253101 10/04/12 07:32 AM 10/04/12 07:32 AM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
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Posts: 12,310 South Carolina | Very exciting. And very very interesting. On small boats (under ~30') the moto has always been stiffer is faster. It seems the bigger the boat and the faster you go some give might be faster (lighter), or at least your boat might not blow up (ala nomex cores in the southern ocean)? Definitely be exciting to watch the races, that is for sure! I've always wondered about that...I know it certainly feels better when the boat is rigid through the waves....but is it faster? People talk about energy lost when a wave makes the platform flex but it is kinda like a spring - you'll get a good bit of that "energy" back on the return...whether that's beneficial or not, I have no idea.
Jake Kohl | | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: P.M.]
#253215 10/06/12 12:05 PM 10/06/12 12:05 PM |
Joined: Sep 2002 Posts: 3,224 Roanoke Island ,N.C. Team_Cat_Fever
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Posts: 3,224 Roanoke Island ,N.C. | I think the flex is used as a foil control, not faster just a way to get around the "no manual control" rule.
"I said, now, I said ,pay attention boy!"
The cure for anything is salt water - sweat, tears, or the sea Isak Dinesen If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most. E. B. White
| | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: P.M.]
#253218 10/06/12 03:48 PM 10/06/12 03:48 PM |
Joined: Sep 2007 Posts: 757 japan erice
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Posts: 757 japan | surprise surprise it seems that fluttering was tearing the boat apart... "What we have is something that's trying to act like a plane," he told a luncheon audience at the Golden Gate Yacht Club, adding that Oracle's boat needed extensive repairs after foiling at high speed.last sentence here http://www.mercurynews.com/californ...ben-ainslie-leads-strong-showing-opening
Last edited by erice; 10/06/12 03:51 PM.
eric e 1982 nacra 5.2 - 2158 2009 weta tri - 294
| | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: Team_Cat_Fever]
#253228 10/07/12 09:23 PM 10/07/12 09:23 PM |
Joined: Jan 2008 Posts: 3,655 Portland, Maine ThunderMuffin
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Posts: 3,655 Portland, Maine | I think the flex is used as a foil control, not faster just a way to get around the "no manual control" rule. Winner winner chicken dinner. | | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: P.M.]
#253248 10/08/12 09:20 AM 10/08/12 09:20 AM | MN3
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Unregistered | Didn't i see (here) they are only allowed 30 days of training? does all this load testing count towards that 30 days or is that for "race training" whatever/if there is a difference | | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: Team_Cat_Fever]
#253249 10/08/12 09:25 AM 10/08/12 09:25 AM |
Joined: Aug 2011 Posts: 774 Greenville SC bacho
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Posts: 774 Greenville SC | I think the flex is used as a foil control, not faster just a way to get around the "no manual control" rule. How would flex be controlling the foiling? They can move the daggers tilting forward or back to control via a ram. I can't see how the boat flex would help them in any way. | | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: ]
#253250 10/08/12 09:26 AM 10/08/12 09:26 AM |
Joined: Aug 2011 Posts: 774 Greenville SC bacho
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Posts: 774 Greenville SC | Didn't i see (here) they are only allowed 30 days of training? does all this load testing count towards that 30 days or is that for "race training" whatever/if there is a difference I think that The emirates video said any more than 5 minutes sailing untethered counted as a day. | | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: P.M.]
#253460 10/13/12 09:34 PM 10/13/12 09:34 PM |
Joined: Dec 2006 Posts: 2,490 On the Water P.M. OP
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Posts: 2,490 On the Water | Set your DVR or watch it this Sunday on NBCSN or VERSUS at 2:30 PM EST. The Road to the America's Cup - Oracle Team USA hosted by non other than . . . you guessed it, our AC genius Todd Harris. "Tag along as WOAS takes an exclusive inside look at the design and construction of the epic 72-foot catamaran the team will be charging into battle with at the 34th Americas Cup in September 2013. Remarkable feats of engineering and copious amounts of training aren't all that it takes to make an America's Cup champion. It also takes heart and perseverance which, luckily, Oracle Team USA has in abundance."
Philip USA #1006 | | | Re: AC72 Oracle Team USA Spaceship has landed
[Re: P.M.]
#253558 10/16/12 06:54 PM 10/16/12 06:54 PM |
Joined: Dec 2006 Posts: 2,490 On the Water P.M. OP
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Posts: 2,490 On the Water | abclocal.go.com/kgo/livenow?id=8849852#&cmp=twi-kgo-article-8849852
Philip USA #1006 | | |
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