Having recently returned from spending far too much time at sea last year: The way I see it the shipping industry needs to begin adapting to the coming lack of...
... I guess this email was private and for me, so I answer in a private French mail, sorry for the convenience to all our only English speaking people ! ...
... I agree. (so I have to say my goal is just to find easy ways for pleasure boats, as for instance the "Godyoto" - an automatic yuloh - explained here : ...
Hi All, I've just finished a webpage of pictures and videos of my Rotary Sailing tests - its on: http://www.sailwings.net/rotaryhome.html Peter Worsley...
... Many thanks Peter for this amazing work and to share all the videos of your tests. I though about the quasi-same concept as your Rotary, and I guess this ...
Le 17/01/2008 23:43, AYRS Office inscrivait : [..] ... Yes, this seems to be a very brilliant "show idea" ! Please make a little movie of that working, just to...
I'm often asked if a vertical axis turbine would be better - this is because they do not need to be oriented to the wind direction. If you want to sail ...
Very impressive boat, Peter! Nice work. I built a "VAWT Yacht" last year, based on a 16 x 6 ft vertical axis turbine built from some old closet doors and an ...
... +1 with Peter, and also about "rotaries" things : if you care about Flettner rotor principle, I found some photos of a Flettner proa here may be you know...
... Thank you Dave, and it is fine ! (when I searched I don't found this one, tx for the link) And Cory : what about your YouTube post up ? Best, -- Guy Capra ...
For all interested in videos about rotorboats this is a good adress : http://www.rotorboat.com/ BTW: A hundred years before Magnus Robins (Engl.) discovered ...
All the papers on Magnus-effect rotating sails talk about the lift that can be produced, and how the lift can be regulated by varying the rotation speed....
Hello all, Dave (and Robert ?) : tx for the Java applet link. It is really fine to understand and visualize the Magnus Effect within it. Manfred : tx for the...
Tom, When we took Stephen Thorpe's rotorboat to Weymouth and ran it down the course its speed over 500 metres was 4.66 knots. for a dinghy this was a...
List of AYRS publications FOR SALE Each one (except 41, 62, 75, 83a, and AIRS) 0.50 pound for AYRS members (1 pound for non-AYRS members). The exceptions are 1...
I have a pair of tortured ply hulls 5m long from a catamaran that I designed and built about 15 years ago. They are sound and reasonably light, of relatively...
http://www.technologyreview.com/Energy/20379/page1/ Please scroll and find more (Videos and science). Found this interesting Link about Whalepower Tubercle...
... When one reads papers about vortex generators such as this, one should ask, "What was the Reynolds number of the test?" Leading edge vortex generators can...
... Hi Tom, I haven't read the paper yet :(, but I understood from the quote I posted on the multihulls list that the authors don't believe these bumps operate...
Dave Howorth
dave@...
Mar 9, 2008 6:52 pm
1136
... I've not read the latest paper. The photograph of the wind tunnel model used in the 2004 paper showed it to have been made largely of clear acrylic, with...
Better wind turbines? I think Ken Uptons conveyor is a much better solution and should be investigated further - I wish I had the time and engineering skills...
Further to the discussion on Vortex generators. I would like to add my own penny woth. All forms of vortex generators tend to add drag, but may be an advantage...
