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Abbreviated rules 07/28/2017
Underdawg did an excellent job of explaining the rules. Here's the simplified version: Don't insinuate Pedo. Warning and or timeout for a first offense. PermaFlick for any subsequent offenses Don't out members. See above for penalties. Caveat: if you have ever used your own real name or personal information here on the forums since, like, ever - it doesn't count and you are fair game. If you see spam posts, report it to the mods. We do not hang out in every thread 24/7 If you see any of the above, report it to the mods by hitting the Report button in the offending post. We do not take action for foul language, off-subject content, or abusive behavior unless it escalates to persistent stalking. There may be times that we might warn someone or flick someone for something particularly egregious. There is no standard, we will know it when we see it. If you continually report things that do not fall into rules #1 or 2 above, you may very well get a timeout yourself for annoying the Mods with repeated whining. Use your best judgement. Warnings, timeouts, suspensions and flicks are arbitrary and capricious. Deal with it. Welcome to anarchy. If you are a newbie, there are unwritten rules to adhere to. They will be explained to you soon enough.
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dorox
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Dan Bernasconi Describes The Three AC75 Concepts
dorox replied to rh2600's topic in America's Cup Anarchy
Nope, this guy is not a commodore of St Peterburg YC. He is the owner of watste processing company, alcohol producer, and a lecturer in a university . It does not seem like he has any connections to Gazprom. Valentin is actually the leader of the Synergy racing team - the one which participated in ACWS in 2011 under the name of "Ё-Challange" according to russian press https://itboat.com/articles/263-kubok-ameriki-rossiya-uchastvuet. I can not confirm this as I did not follow AC at that time, but there is a picture of the boat (could be photoshopped). The interesting thing is that Synergy wanted to compete in 34th AC, but the cost was too high."The cost has grown from 20 millions euro for 32 AC to 60millions for 34 AC... I am not sure that there is anybody willing to compete at that price in Russia" https://itboat.com/articles/183-kogda-nibud-my-ego-zaberem -
Waiting for Russian hackers to steal ETNZ's simulation software
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Good job asking about the bulb. Now one can imagine their 2 options are: with and without ballasted keel (?)
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Will the videos from ac34 and ac35 be published on youtube? Will the race management publish boats telemetry as it has been done before?
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I can assure you - you woudn't see a potential AC founder there
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Nobody cares about sailing in Russia. It is just too far from being a national sport. And the oligarchs are having fun in RC44 which they can actually sail, as opposed to modern AC. There is also a language barrirer and the price of oil. There was an interesting endeavour of Gazprom with ESS, but it failed.
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Today's data. Oracle had non symmetric foils - look at the speed difference on the polar - port foil was worse. Not much of the straight line speed difference I would say. Probably tacking is killing them.
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Yes, and the median TWS is higher for NZL, which supports the point. I don't see much speed differential, not at all. Probably the most gains were created by maneuvers. I need to find the way to analyse that.
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Today's portion of "analytics": Tactics: median TWS for NZL - 8.7kn, USA - 8.5kn. Tacking: average VMG at TWA<30deg: NZL-13.8, USA- 13.13 Gibing: average VMG at TWA>160deg: NZL - 23.86, USA - 17.86
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Today's portion of "analytics": Tactics: median TWS for NZL - 8.7kn, USA - 8.5kn. Tacking: average VMG at TWA<30deg: NZL-13.8, USA- 13.13 Gibing: average VMG at TWA>160deg: NZL - 23.86, USA - 17.86
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Today's portion of "analytics": Tactics: median TWS for NZL - 8.7kn, USA - 8.5kn. Tacking: average VMG at TWA<30deg: NZL-13.8, USA- 13.13 Gibing: average VMG at TWA>160deg: NZL - 23.86, USA - 17.86
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The new AC 15m class rule V 1.2 (june 2015)
dorox replied to Tornado-Cat's topic in America's Cup Anarchy
New interpretations on rudder wings with nice pictures: https://docs.google.com/a/acracemgt.com/viewer?a=v&pid=sites&srcid=YWNyYWNlbWd0LmNvbXxub3RpY2Vib2FyZHxneDozOTUzMTc4ZGI2ZGFhOGFl https://docs.google.com/a/acracemgt.com/viewer?a=v&pid=sites&srcid=YWNyYWNlbWd0LmNvbXxub3RpY2Vib2FyZHxneDo3ZGE3NzkyOWM2NzU1Y2Vm -
I don`t know exactly, but my guess is that because there is larger heeling moment from the wing. This heeling is balanced by higher lift on the foil when compared to downwind. And higher lift equals to bigger angle of attack which leads to lower pressure around the foil. In simplier terms, for downwind foil is used to support only weight of the boat. For upwind it supports weight plus increases righting moment which requires higher lift.
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What I found interesting is the top limit they hit at high wind speed: appr. 15kn VMG or 25 kn SOG. I think this should be cavitation speed in upwind mode. Keep in mind that cavitation causes damage to appendages - they do not want to sail 100% unless it is their last cup race
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The dots I plotted are at "steady state" sailing. It is defined as change of average SOG over 10 s is less than 0.1kn and change of a COG over 10s is less than 0.1deg. Look at the polars - the course is changing within 20 deg when going upwind: sometimes they sail lower/higher, or they might put more or less pressure on the boat by adjusting the wing (they dont need to go 100% all the time, just enough to beat SWE)- this affects VMG.