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#41
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Windmill go boom
On Nov 15, 6:53*am, aemeijers wrote:
George wrote: Joe wrote: On Nov 14, 1:26 pm, RicodJour wrote: Posted in another newsgroup. *You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA R Most interesting, as we have had 230-odd Vestas turbines in operation here in McLean County, Illinois for about three years. Several hundred more turbines are scheduled for building in the next few years here and in nearby counties. I noted propeller blade replacement being done on one recently. Occasionally, a unit will be stopped for some maintenance while all the surrounding ones keep ponderously rotating, making volts and amps for Ransley up there in Chicago. I haven't seen any bird kill problems, but there have been reports of a few bat kills. At night, seeing acres and acres of winking red warning lights impresses visitors. Kind of neat. The farmers like having the lease income from the operation, and the construction crews were and are absolute models of efficiency and care for the terrain. Not much in the way of downsides. Joe They were supposed to build a fairly large windfarm here in one of the few places where it would make sense. There is a high end development located around 5 miles from there. A few influential people were very vocal about how it would destroy their "view" so they had the zoning regulations changed to prevent windmills without explicitly preventing them. The interesting part too is the windfarm was being built with private money not with money the government picked out of our pockets. NIMBY strilkes again. Stuff like that is one of the reasons they are now talking about building them offshore, in areas with both wind, and out of view of tourist beachs and rich folk cliffs. Oh yeah, that'll make them cheaper and more resistant to weather. -- aem sends...- Hide quoted text - - Show quoted text - Nimby is being rammed up the rear of the only two complainers in this county. Lacking any other reasonable argument (they tried all of them and got shot down by science) they are using "low frequency sound" as their objection now. County dads just _reduced_ the setbacks and distance between towers in the local zoning. They had it at 5 times tower height until it was pointedout that was far stricter than anyplace else in the state. Is there a problem with "low freuency noise" or it is just another hoggoblin teh nimbys dreamed up? Harry K |
#42
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Windmill go boom
On Nov 14, 11:26*am, RicodJour wrote:
Posted in another newsgroup. *You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA R I don't know if it was posted already. If it was the same one that was on The Hisstory or TlC channels, the problem was failure of the governor resulting in overspeed condition. Shed one blade which caused rest of problem. Harry K |
#43
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Windmill go boom
On Nov 14, 1:41*pm, mm wrote:
On Sat, 14 Nov 2009 12:24:11 -0800, Oren wrote: On Sat, 14 Nov 2009 11:26:07 -0800 (PST), RicodJour wrote: Posted in another newsgroup. *You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA Maybe it needed an oil change :-) How they knew this would happen and caught it on video is be beyond me. I thought about that too. How does Funniest Home Videos have all those pictures of people doing nothing special and then falling down? For those with *dial-up, the video is only 40 seconds long.... So iirc about 10 minutes to dl with dial-up. * But watching it won't answer these questions. The answer is simple. It was a failuire of the governor. Resulted in overspeed. One blade failed due to exceeding stress limit. Unbalance caused remainder of problem. The governor failure was mentioned somewhere in one of the shows. No need to go into any "conspiracy theories" simple engineering explanations cover it. Harry K |
#44
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Windmill go boom
I assume that windmills that big must have rotating blades like planes (and probably also brakes) so they can be stopped in high winds. My guess is that the rotating mechanism failed, and the brakes probably aren't strong enough to stop it with the blades in the normal position. We did a convention in Las Vegas, and they brought in one of the blades. It was the longest load I have ever seen come into the LVCC. I have seen two or three of these going down the Interstate, but looking at them in National Geographic, they must be some of the smaller ones compared to what's in Europe. The ones on the Interstate were a caravan of guide cars, and I would estimate that they were about 125' long. In England and Europe, they can be built dockside, and then barged to the towers, never getting on asphalt. I would say that something failed, as those blades are meant to rotate so that when they start spinning fast, they turn so that the edge hits the wind straight on, therefore creating no spin. No doubt about it in my mind as to what happened. Something or someone screwed up. Yep. Definitely. Steve |
#45
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Windmill go boom
"Then there are those exotic spirally ones that spin on a vertical axis. Anyone ever seen those?" Weren't those used on ships? Steve |
#46
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Windmill go boom
I haven't seen any bird kill problems, but there have been reports of a few bat kills. Would that be because the birds learned to avoid them, or all the birds were dead? Steve |
#47
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Windmill go boom
George wrote:
Joe wrote: On Nov 14, 1:26 pm, RicodJour wrote: Posted in another newsgroup. You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA R Most interesting, as we have had 230-odd Vestas turbines in operation here in McLean County, Illinois for about three years. Several hundred more turbines are scheduled for building in the next few years here and in nearby counties. I noted propeller blade replacement being done on one recently. Occasionally, a unit will be stopped for some maintenance while all the surrounding ones keep ponderously rotating, making volts and amps for Ransley up there in Chicago. I haven't seen any bird kill problems, but there have been reports of a few bat kills. At night, seeing acres and acres of winking red warning lights impresses visitors. Kind of neat. The farmers like having the lease income from the operation, and the construction crews were and are absolute models of efficiency and care for the terrain. Not much in the way of downsides. Joe They were supposed to build a fairly large windfarm here in one of the few places where it would make sense. There is a high end development located around 5 miles from there. A few influential people were very vocal about how it would destroy their "view" so they had the zoning regulations changed to prevent windmills without explicitly preventing them. The interesting part too is the windfarm was being built with private money not with money the government picked out of our pockets. I do seem to remember the late Senator Kennedy objecting to some whirly- gigs because it would destroy the view. TDD |
#48
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Windmill go boom
Harry K wrote:
On Nov 15, 6:53 am, aemeijers wrote: George wrote: Joe wrote: On Nov 14, 1:26 pm, RicodJour wrote: Posted in another newsgroup. You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA R Most interesting, as we have had 230-odd Vestas turbines in operation here in McLean County, Illinois for about three years. Several hundred more turbines are scheduled for building in the next few years here and in nearby counties. I noted propeller blade replacement being done on one recently. Occasionally, a unit will be stopped for some maintenance while all the surrounding ones keep ponderously rotating, making volts and amps for Ransley up there in Chicago. I haven't seen any bird kill problems, but there have been reports of a few bat kills. At night, seeing acres and acres of winking red warning lights impresses visitors. Kind of neat. The farmers like having the lease income from the operation, and the construction crews were and are absolute models of efficiency and care for the terrain. Not much in the way of downsides. Joe They were supposed to build a fairly large windfarm here in one of the few places where it would make sense. There is a high end development located around 5 miles from there. A few influential people were very vocal about how it would destroy their "view" so they had the zoning regulations changed to prevent windmills without explicitly preventing them. The interesting part too is the windfarm was being built with private money not with money the government picked out of our pockets. NIMBY strilkes again. Stuff like that is one of the reasons they are now talking about building them offshore, in areas with both wind, and out of view of tourist beachs and rich folk cliffs. Oh yeah, that'll make them cheaper and more resistant to weather. -- aem sends...- Hide quoted text - - Show quoted text - Nimby is being rammed up the rear of the only two complainers in this county. Lacking any other reasonable argument (they tried all of them and got shot down by science) they are using "low frequency sound" as their objection now. County dads just _reduced_ the setbacks and distance between towers in the local zoning. They had it at 5 times tower height until it was pointedout that was far stricter than anyplace else in the state. Is there a problem with "low freuency noise" or it is just another hoggoblin teh nimbys dreamed up? Harry K It disrupts the feeding habits of the Three Legged Jumping Snail and causes pet Pot Belly Pigs to stop that cute little snorting sound they make which the pet owners find so adorable. TDD |
#49
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Windmill go boom
"SteveB" wrote in message ... I assume that windmills that big must have rotating blades like planes (and probably also brakes) so they can be stopped in high winds. My guess is that the rotating mechanism failed, and the brakes probably aren't strong enough to stop it with the blades in the normal position. We did a convention in Las Vegas, and they brought in one of the blades. It was the longest load I have ever seen come into the LVCC. I have seen two or three of these going down the Interstate, but looking at them in National Geographic, they must be some of the smaller ones compared to what's in Europe. The ones on the Interstate were a caravan of guide cars, and I would estimate that they were about 125' long. In England and Europe, they can be built dockside, and then barged to the towers, never getting on asphalt. I would say that something failed, as those blades are meant to rotate so that when they start spinning fast, they turn so that the edge hits the wind straight on, therefore creating no spin. No doubt about it in my mind as to what happened. Something or someone screwed up. Yep. Definitely. It's called feathering. With the blades fully feathered, no brakes would be necessary. __________ Information from ESET Smart Security, version of virus signature database 4610 (20091115) __________ The message was checked by ESET Smart Security. http://www.eset.com |
#50
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Windmill go boom
mm wrote:
On Sat, 14 Nov 2009 11:32:55 -0800, David Nebenzahl wrote: On 11/14/2009 11:26 AM RicodJour spake thus: Posted in another newsgroup. You don't get an idea of the scale of the thing until it goes over. One comment says a goose hit it, but it looks like all three blades broke at once. I put my cursor just before it happened and watched several times. There is no way to watch in slo-mo afaik?? And how did a goose breaking a blade bread the whole mast? One of the blades hit the mast as it broke. |
#51
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Windmill go boom
"SteveB" wrote in news:eio5t6-
: "Then there are those exotic spirally ones that spin on a vertical axis. Anyone ever seen those?" Weren't those used on ships? Steve ISTR a Cousteau windjammer that used them. I think they were "sails",though,not power generation. -- Jim Yanik jyanik at localnet dot com |
#52
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Windmill go boom
On Sun, 15 Nov 2009 11:42:46 -0600, The Daring Dufas
wrote: George wrote: Joe wrote: On Nov 14, 1:26 pm, RicodJour wrote: Posted in another newsgroup. You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA R Most interesting, as we have had 230-odd Vestas turbines in operation here in McLean County, Illinois for about three years. Several hundred more turbines are scheduled for building in the next few years here and in nearby counties. I noted propeller blade replacement being done on one recently. Occasionally, a unit will be stopped for some maintenance while all the surrounding ones keep ponderously rotating, making volts and amps for Ransley up there in Chicago. I haven't seen any bird kill problems, but there have been reports of a few bat kills. At night, seeing acres and acres of winking red warning lights impresses visitors. Kind of neat. The farmers like having the lease income from the operation, and the construction crews were and are absolute models of efficiency and care for the terrain. Not much in the way of downsides. Joe They were supposed to build a fairly large windfarm here in one of the few places where it would make sense. There is a high end development located around 5 miles from there. A few influential people were very vocal about how it would destroy their "view" so they had the zoning regulations changed to prevent windmills without explicitly preventing them. The interesting part too is the windfarm was being built with private money not with money the government picked out of our pockets. I do seem to remember the late Senator Kennedy objecting to some whirly- gigs because it would destroy the view. TDD DING Ding ding! You win. It was not that long ago... |
#53
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Windmill go boom
On Sun, 15 Nov 2009 09:56:57 -0700, "SteveB"
wrote: No doubt about it in my mind as to what happened. Something or someone screwed up. Yep. Definitely. I'm glad you cleared that up for me. |
#54
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Windmill go boom
On 11/14/2009 3:22 PM Neill Massello spake thus:
David Nebenzahl wrote: Then there are those exotic spirally ones that spin on a vertical axis. Anyone ever seen those? Not in person, but I think they're only used for fairly small installations near ground level, where space or height or aesthetic considerations rule out one of the larger and (I'm guessing) more efficient propeller-style units. Here's a whole page of vertical-axis wind turbines: http://www.wind-works.org/photos/PhotosVAWTs.html (Most are from the late 70s-early 80s.) -- Who needs a junta or a dictatorship when you have a Congress blowing Wall Street, using the media as a condom? - harvested from Usenet |
#55
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Windmill go boom
The Daring Dufas wrote:
Is there a problem with "low freuency noise" or it is just another hoggoblin teh nimbys dreamed up? Harry K It disrupts the feeding habits of the Three Legged Jumping Snail and causes pet Pot Belly Pigs to stop that cute little snorting sound they make which the pet owners find so adorable. http://www.globalsecurity.org/milita.../accoustic.htm |
#56
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Windmill go boom
Oren wrote:
On Sun, 15 Nov 2009 11:42:46 -0600, The Daring Dufas wrote: George wrote: Joe wrote: On Nov 14, 1:26 pm, RicodJour wrote: Posted in another newsgroup. You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA R Most interesting, as we have had 230-odd Vestas turbines in operation here in McLean County, Illinois for about three years. Several hundred more turbines are scheduled for building in the next few years here and in nearby counties. I noted propeller blade replacement being done on one recently. Occasionally, a unit will be stopped for some maintenance while all the surrounding ones keep ponderously rotating, making volts and amps for Ransley up there in Chicago. I haven't seen any bird kill problems, but there have been reports of a few bat kills. At night, seeing acres and acres of winking red warning lights impresses visitors. Kind of neat. The farmers like having the lease income from the operation, and the construction crews were and are absolute models of efficiency and care for the terrain. Not much in the way of downsides. Joe They were supposed to build a fairly large windfarm here in one of the few places where it would make sense. There is a high end development located around 5 miles from there. A few influential people were very vocal about how it would destroy their "view" so they had the zoning regulations changed to prevent windmills without explicitly preventing them. The interesting part too is the windfarm was being built with private money not with money the government picked out of our pockets. I do seem to remember the late Senator Kennedy objecting to some whirly- gigs because it would destroy the view. TDD DING Ding ding! You win. It was not that long ago... I have a mind like a steel....er, like a steel.....er, like a.... TDD |
#57
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Windmill go boom
Bob F wrote:
The Daring Dufas wrote: Is there a problem with "low freuency noise" or it is just another hoggoblin teh nimbys dreamed up? Harry K It disrupts the feeding habits of the Three Legged Jumping Snail and causes pet Pot Belly Pigs to stop that cute little snorting sound they make which the pet owners find so adorable. http://www.globalsecurity.org/milita.../accoustic.htm There have been some very interesting programs on about the development of acoustic weapons. It was on The Military channel if I remember correctly. Back when I was a damn hippie freak, attending loud concerts, I had some bone rattling experiences from the large acoustic transducers in front of the stage. It's funny how our military uses that same music to torture man caused disaster suspects. *snicker* TDD |
#58
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Windmill go boom
Three windmills for $9.99 with valuable coupon!
-- Christopher A. Young Learn more about Jesus www.lds.org .. "Red Green" wrote in message ... RicodJour wrote in news:fba78398-91da-4a70-bbd3- : Posted in another newsgroup. You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA R Probably a HF coupon item. |
#59
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Windmill go boom
The Daring Dufas wrote:
There have been some very interesting programs on about the development of acoustic weapons. It was on The Military channel if I remember correctly. Back when I was a damn hippie freak, attending loud concerts, I had some bone rattling experiences from the large acoustic transducers in front of the stage. It's funny how our military uses that same music to torture man caused disaster suspects. *snicker* They were doing it to hippies back then, too. |
#60
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Windmill go boom
The Daring Dufas wrote:
TDD DING Ding ding! You win. It was not that long ago... I have a mind like a steel....er, like a steel.....er, like a.... Did you marry the girl who just can't say 'Nuu.. Nuuu, Nuuu!!!, Nuuu..."? |
#61
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Windmill go boom
On Mon, 16 Nov 2009 17:04:30 -0600, "HeyBub"
wrote: The Daring Dufas wrote: There have been some very interesting programs on about the development of acoustic weapons. It was on The Military channel if I remember correctly. Back when I was a damn hippie freak, attending loud concerts, I had some bone rattling experiences from the large acoustic transducers in front of the stage. It's funny how our military uses that same music to torture man caused disaster suspects. *snicker* Yup! Parabolic speakers. They were doing it to hippies back then, too. "Application: Commercial application for parabolic speaker system are listed as spaces like Airports, Shopping Malls and stadiums. They are also used in by the police in situation like crowd control, hostage crisis, anywhere where long throw intelligable audio is required." |
#62
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Windmill go boom
HeyBub wrote:
The Daring Dufas wrote: There have been some very interesting programs on about the development of acoustic weapons. It was on The Military channel if I remember correctly. Back when I was a damn hippie freak, attending loud concerts, I had some bone rattling experiences from the large acoustic transducers in front of the stage. It's funny how our military uses that same music to torture man caused disaster suspects. *snicker* They were doing it to hippies back then, too. So you saw "A Clockwork Orange" too. TDD |
#63
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Windmill go boom
HeyBub wrote:
The Daring Dufas wrote: TDD DING Ding ding! You win. It was not that long ago... I have a mind like a steel....er, like a steel.....er, like a.... Did you marry the girl who just can't say 'Nuu.. Nuuu, Nuuu!!!, Nuuu..."? I wish I could find one I could just stand to be around. They all remind me of my mother, who is completely bonkers! These days it's illegal to slap them upside the head in a vain attempt to reboot their brain. *snicker* TDD |
#64
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Windmill go boom
RicodJour wrote:
Posted in another newsgroup. You don't get an idea of the scale of the thing until it goes over. http://www.youtube.com/watch?v=c3FZtmlHwcA Wow! Cool, if it's not yours! I believed the reason someone was there with a camera is because the generator/alternator had failed and there was no load or brakes to slow the blades. It was an accident waiting to happen. If it had been working properly it never would have spun that fast. At that rate of speed I think as soon as one blade broke it became so off balance that it instantly self destructed faster than that video, or video clip could show. Do it again with a high speed camera! ;-) |
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