Keeping with idea of a separate thread for the tangential issue of lift generation, may I suggest a look at: _http://www.av8n.com/how/htm/airfoils.html_ ...
... I think some at least are designed for the sail-low-and-fast school of thought, so tacking angles might not look good. ... I think that's pretty impressive...
Dave Howorth
Dave.Howorth@...
Aug 1, 2006 6:08 pm
252
Another link to flow round an airfoil is http://www.diam.unige.it/~irro/profilo1a_e.html Cheers Mark Stacey ... lift...
I'm stunned. Moths always looked impossible to keep upright when they were big flat dishes but now!!! Are their any links to clips or video files of these...
http://www.rohanveal.com/video.html It does look pretty funny when travelling at low speed while launching and retreiving. It is like someone riding a trick...
... That looked like a pretty good site when I played the first video (ABN Amro), even though the download took a while and there was lots of blocking. So I...
Dave Howorth
Dave.Howorth@...
Aug 2, 2006 7:50 pm
256
... While quite interesting and informative, the links such as the one quoted in part above do not explain WHY the fluid flowing above the airfoil is...
Ned Bright
phoebus@...
Aug 2, 2006 10:39 pm
257
... No offense, Dave (I love your writing!), but it's just this sort of thing I'm protesting. "They claim" is ths oldest lie in the books. One of the primary...
... No offense, Dave (I love your writing!), but it's just this sort of thing I'm protesting. "They claim" is ths oldest lie in the books. One of the primary...
Dave, You should get your hair on fire at the boatdesign.net pages where there is hype galore on the foiling moths. One guy, Doug Lord, is in such a lather...
One of the reasons for Weymouth Speed Week held every year since 1972 to the present day (this years event is from the 2nd to the 8th of October 2006 at the...
Hi Robert, Perhaps you could extend a personal invitation to I-Moth World Champion, Si Payne, to bring along a few of his fast buddies to give it a go this...
On Aug. 1, I posted a comment on this thread to look at _http://www.av8n.com/how/htm/airfoils.html_ (http://www.av8n.com/how/htm/airfoils.html) because the...
Perhaps it's because the the pressure vector normal to the lower surface is not only down, but slightly forward. The whole length of the wing bottom is the...
My powers of visualisation are poor, but I think now I am able to see circulation around the wing. Thank you dough & robyn and `'Twodog' as well for your...
Ned Bright
phoebus@...
Aug 7, 2006 11:20 pm
265
Thinking about the "Dynamic Sailing' thread; Has anybody seen a design for a hapa that attaches to the boat [or glider] with one line, stays at just the right...
They used to use paravanes you describe to sweep sea mines during the war. I don't know much about them but they were not very smart (not active controls for...
The article on a Voyaging Canoe for Tikopia and the editor's comment has prompted the following question - have the modern multihull designers improved on the...
... Depends. Stronger materials certainly allow longer and wider boats for the same weight. If you can increase dimensions while keeping constant that...
... Hi all, New to this group and owning a sailing folding kayak for three! And one for two! Both using outriggers! Anyway, even Sven Yrvind (nee Lundin), the...
... ... I used and built such things years ago mainly while working for Keith Stewart. Besides Hagedoorn's original and my own designs using hoops, we used the...
... Simon, Do you know of anyone in the society who would be able to supply info. on the Wyre 24 sailing cruiser?I have just completed a 2 year refurb of...
Yachting Monthly July 1984 published results of seatrials comparing bermudian, spritsail,lateen and gaff sailrigs and found that the spritsail was superior to...
1. I am looking for a simple sailrig for my catamaran and would like to know how the crabclaw sailrig performs in the real world such as on the catamaran Child...
... Firstly let's make it clear here we're talking of the quadrilateral sail with a sprit holding up the peak and a conventional boom (i.e. spritsail in...
... I can't speak to (1) but you'll also find (2) in any undergraduate text on simple beam theory (try a good library), and not being a structural engineer I...
There used to be a plan for a small quadrilateral sail at the Polysails site but it seems to have been removed - although many other similar links still work....
... I'm new to this group and not an AYRS member, although sailing on pacific proa with CC for two years now, (designed myself) and have done some practical...
I have Roarks but also a deadline. I'll give you the formular in a day or so. Wally Paine ... ___________________________________________________________ Now...
