Historical failures of any technology have many causes. Usually it's the lack of financial ability to see the idea through to market. That doesn't mean the...
James Hanlon
jhsolar@...
Aug 2, 2004 1:36 pm
13814
The concept of hollow blades with open blade tips that let centrifugal force accelerate an airstream is not new. On page 18 of the book "Wind Machines"...
Dear Med: True airplanes did move on from the single rotor of a propeller to the co-axial, multi-rotor configuration of the jet engine, bypassing the...
Andy, I had some of those older original, shiney and soft plastic Hornet blades; They were horrible, indeed... "Bob", over at Hydrogen Appliances told me that...
Dear Kerem: Have a good look at the forces and velocities diagram. The useful force in turning the turbine is the tangential component of the lift force less...
Raul Verastegui
raulv@...
Aug 2, 2004 1:45 pm
13818
Hi I was just browsing along on the web, trying to find something on a "Flettner turbine" which is a series of railroad cars carrying magnus rotors (rotating...
Hugh: I've been on this forum for nearly two years now. What I've learned in that time is the names of the "experts" you being recognized by your peers as one...
James Hanlon
jhsolar@...
Aug 2, 2004 1:47 pm
13820
Hello EWA! I tried experiment on what you said about tape deck motors using rotor from an aluminum cut out to 6 in dia. swept area and twisted on the edges. It...
med Barnell
waray002@...
Aug 2, 2004 1:47 pm
13821
Right on the Head! Anyone in this forum can say he built the wind farms I saw in movies? Small Wind is small wind. As for those bragged about patents on HAWT,...
med Barnell
waray002@...
Aug 2, 2004 1:47 pm
13822
James Hanlon <jhsolar@...> wrote: Hugh: I've been on this forum for nearly two years now. What I've learned in that time is the names of the "experts" you...
med Barnell
waray002@...
Aug 2, 2004 1:48 pm
13823
... You make a good point. Small wind is a very challenging and rather unsuccessful technology. That's one big reason why I try to steer people toward the...
I would like to do a feasibility study for wind power at my site. Most of the time I've been up there so far, the air has been dead still... nevertheless, I...
Hi group, I'm looking at getting Solid Works and Cosmos FloWorks packages to help in various designing projects. Has anyone any experience/feedback they...
AlbaBretonCo@...
Aug 2, 2004 1:50 pm
13826
Hi All I just found this group through the otherpower.com www site. I have been thinking about sucking my own energy out of the wild for a while, I live in the...
TSR of 0.2 isn't good for a drag-based rotor and indicates overloading. Better power might be obtained if the load were controlled to allow the rotor to speed...
I am sure I once saw very primitive sketches of a VAWT in China purporting to be 3000 BC but I have checked all the sources I may have read this and the...
It seems fruitless to me to argue the superiority of one over the other. Fact is that both HAWT and VAWT have nerit. They are both useful, but in different ...
Bill, We have been using SolidWorks/Cosmos for six years now. They have streamlined our engineering processes a great deal. We do run into some weaknesses in...
Mike Bergey
mbergey@...
Aug 2, 2004 3:03 pm
13833
For a bit of background, the reputation of the "EZ-Fire" in 2000 was a serious debating point within our company when we were looking to buy out all of World...
Andrew Kruse
andy@...
Aug 2, 2004 5:11 pm
13834
Oops, there it is again! The graph of turbine efficiency, http://windturbine-analysis.com/index-intro.htm, has the American and Savonius names swapped. There...
Hi Mike I find your analysis very impartial and correct. In April we had a discussion in this forum about the influence of the wind deviation on the overall...
Raul Verastegui
raulv@...
Aug 2, 2004 5:13 pm
13836
Hi Raul. (Doug, you can skip the first two paragraphs) (Excuse me for putting two subjects together but they are kinda related) I agree with all basics you...
Trade show? Great idea. Count me in. I used to lecture at software trade shows on how to set up simple, cost effective accounting systems and networks. Matter...
Geez, Doug...At least, the perpetual motion machines seem to work on their drawing boards...LOL ... From: dougselsam To: awea-wind-home@yahoogroups.com Sent:...
Frank: Why do you think the labels are swapped? I think that is possibly an erroneous statement to say they were switched. Logically, the American farm...
Florida Tech has a SWWP 1 kW turbine on a eight-story building. When I realized that if the battery circuit to the controller opened that the short switch...
... straight-bladed darrieus at Riso in Denmark in the early 1980s. Yes, I saw it, too. As a very young architect it fascinated me tremendoulsly, standing...
Hi Frank, The schematic for the generator has all three phases together, however this still does NOT provide enough "braking" to stop the generator in a high...
