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    • UnderDawg

      A Few Simple Rules   05/22/2017

      Sailing Anarchy is a very lightly moderated site. This is by design, to afford a more free atmosphere for discussion. There are plenty of sailing forums you can go to where swearing isn't allowed, confrontation is squelched and, and you can have a moderator finger-wag at you for your attitude. SA tries to avoid that and allow for more adult behavior without moderators editing your posts and whacking knuckles with rulers. We don't have a long list of published "thou shalt nots" either, and this is by design. Too many absolute rules paints us into too many corners. So check the Terms of Service - there IS language there about certain types of behavior that is not permitted. We interpret that lightly and permit a lot of latitude, but we DO reserve the right to take action when something is too extreme to tolerate (too racist, graphic, violent, misogynistic, etc.). Yes, that is subjective, but it allows us discretion. Avoiding a laundry list of rules allows for freedom; don't abuse it. However there ARE a few basic rules that will earn you a suspension, and apparently a brief refresher is in order. 1) Allegations of pedophilia - there is no tolerance for this. So if you make allegations, jokes, innuendo or suggestions about child molestation, child pornography, abuse or inappropriate behavior with minors etc. about someone on this board you will get a time out. This is pretty much automatic; this behavior can have real world effect and is not acceptable. Obviously the subject is not banned when discussion of it is apropos, e.g. talking about an item in the news for instance. But allegations or references directed at or about another poster is verboten. 2) Outing people - providing real world identifiable information about users on the forums who prefer to remain anonymous. Yes, some of us post with our real names - not a problem to use them. However many do NOT, and if you find out someone's name keep it to yourself, first or last. This also goes for other identifying information too - employer information etc. You don't need too many pieces of data to figure out who someone really is these days. Depending on severity you might get anything from a scolding to a suspension - so don't do it. I know it can be confusing sometimes for newcomers, as SA has been around almost twenty years and there are some people that throw their real names around and their current Display Name may not match the name they have out in the public. But if in doubt, you don't want to accidentally out some one so use caution, even if it's a personal friend of yours in real life. 3) Posting While Suspended - If you've earned a timeout (these are fairly rare and hard to get), please observe the suspension. If you create a new account (a "Sock Puppet") and return to the forums to post with it before your suspension is up you WILL get more time added to your original suspension and lose your Socks. This behavior may result a permanent ban, since it shows you have zero respect for the few rules we have and the moderating team that is tasked with supporting them. Check the Terms of Service you agreed to; they apply to the individual agreeing, not the account you created, so don't try to Sea Lawyer us if you get caught. Just don't do it. Those are the three that will almost certainly get you into some trouble. IF YOU SEE SOMEONE DO ONE OF THESE THINGS, please do the following: Refrain from quoting the offending text, it makes the thread cleanup a pain in the rear Press the Report button; it is by far the best way to notify Admins as we will get e-mails. Calling out for Admins in the middle of threads, sending us PM's, etc. - there is no guarantee we will get those in a timely fashion. There are multiple Moderators in multiple time zones around the world, and anyone one of us can handle the Report and all of us will be notified about it. But if you PM one Mod directly and he's off line, the problem will get dealt with much more slowly. Other behaviors that you might want to think twice before doing include: Intentionally disrupting threads and discussions repeatedly. Off topic/content free trolling in threads to disrupt dialog Stalking users around the forums with the intent to disrupt content and discussion Repeated posting of overly graphic or scatological porn content. There are plenty web sites for you to get your freak on, don't do it here. And a brief note to Newbies... No, we will not ban people or censor them for dropping F-bombs on you, using foul language, etc. so please don't report it when one of our members gives you a greeting you may find shocking. We do our best not to censor content here and playing swearword police is not in our job descriptions. Sailing Anarchy is more like a bar than a classroom, so handle it like you would meeting someone a little coarse - don't look for the teacher. Thanks.

buckdouger

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About buckdouger

  1. Would be interested in a bit more discussion like that. Alas the problem of threads devolving into all manner of nonsense is intractable. I can DM you to start a group email discussion with a few select contributors who bring good technical discussion and stay away from the ad hominem stuff (subjective, I know). Here's something I'd like to discuss: anyone have any good resources which discuss the pressure side profile of a foil? Most of the references I've found focus on the suction side, adverse pressure gradient, etc. For cambered foils especially, what is the rationale behind the camber vs a completely straight line between stagnation point and TE?
  2. Unless I'm misunderstanding something, I think the difference is illusory. Do we agree that it takes the same energy (joules) to move a foil from rake position 1 to position 2, regardless of where you push on it? Then, that being the case, the thing which dictates power (work/time or joules/second) is how fast you try and do it. I think all teams are trying to get their foils to the right positions as fast as possible, and that creates power drain. The benefit of the AR system that I can think of is that it mechanically automates pitch adjustments during the range of movements required for a board deployment (tack/gybe). That frees up some human operator from having to time things and press buttons. There may be other legal approaches to doing that semi-automatically in other teams, but this might be desirable to AR because they have found the sequence is consistent, and a mechanical approach is reliable.
  3. Thanks ~Stingray~ link lost the numbers at the end, I've added them.
  4. I also don't believe that raising and lowering motions are the most effective way to create AoA changes, but the earlier image selected, and some of the recent content does clearly show some curve to the board, when viewed abeam. With the two colours, it looks almost like this was an afterthought to reposition the rake zero position at max deployment, or was intended to be modified/modular. Also, AR have a quite pronounced difference between the chord of the foils in the vertical sections up top, and near the elbow and into the horizontal area. The thickest chord upper barely makes it into the water it seems, so it may be for structural reasons, or simply so that the LE can present an aft swept shape to the water, in line with the discussion of spray earlier. It also matches up with the angular dimensions in the OR thread which show quite a difference in LE angle relative to the hull in steady flight. I think there are some subtle choices here that may be different from some of the other teams.
  5. Haha, I know.. SolidWorks, not SA approved!
  6. Don't remember claiming accuracy..! But we don't have much to work with, so it's better than nothing. Not much different to Bora and Peet's speculation, only illustrated.
  7. S Sounds good. I have to admit my initial illustration wasn't great as the rake comparison was between the two wings with no common reference, but annotating all the areas on the boat that seemed half reasonable, I still ended up with smaller differences. Anyway, thanks for putting protractor to screen!
  8. No points for thinking Doug. Get out a protractor and show us what you can do!
  9. That was meant to have this image:
  10. Optical illusion. Quite a difference in daggerboard rake on the vertical portions though.
  11. One of the enduring mysteries of this cup leadup. Seems to just annoy the fans. Interestingly though, the blurring seems selective with oracle, perhaps based on angle of photo/video.
  12. ETNZ had something like that too in some pics, both only over the lower portion of the shrouds.
  13. Helical lifting post? Was it BAR that asked for the interpretation?
  14. No worries, I got this... better?
  15. Steve, any reason why STAR-CCM+ and HEEDS? Was it just availability or something particular that you or Flexsys wanted? Other vendors have similar tools, not sure if you were able to compare. Regarding results, you mentioned difficulty capturing operating conditions (I interpret that as boundary and flow conditions). Was your group happy with choices of turbulence model, mesh quality, boundary layer mesh, etc, or was that thought to also contribute to possible errors? Maybe that was left to Red Cedar Technology? Also interested, if you can say, what the range of permissible flexed shapes were for the Flexsys technology, and how they are found (FEA simulation based on structure, and actuator input loads?). Finally, if you were to integrate such a thing into your wings, would it be actuator agnostic - i.e. one could achieve the same shapes with strings, hydraulics, or piezos, or for example, is something like an actuator integral to the skin necessary?