130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
(OP)
latest news from GE- to increase blades to a 130m max, they propose a space frame covered with a geo-fabic, simialr to old airplanes circa 1915. A 260 m rotor diameter might generate 20 MWe, by my guess. One good hail storm, though , and you're back to square one. At least the birds will bounce off.





RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
They claim to have developed a better fabric for covering.
Most of the fabrics used, even today for covering aircraft have poor UV qualities, and require protective paints to prolong their life.
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
But, apparently, not the spelling of the words
TTFN
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RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
It is still used today.
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Valuable advice from a professor many years ago: First, design for graceful failure. Everything we build will eventually fail, so we must strive to avoid injuries or secondary damage when that failure occurs. Only then can practicality and economics be properly considered.
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Driving around the country last summer, I have to say the wind farms are the ugliest thing we've done in a long time.
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Independent events are seldomly independent.
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Allowing the wind turbine to swivel nominally requires addition of a dual channel rotary hydraulic coupling, or a sturdy right angle gearbox.
I said the coupling is 'nominally' required, and it is if one requires unlimited yaw rotation. ... but I heard of a smaller wind turbine that was allowed to swivel on its own, and never yawed much more than one full rotation. The electric cables just dangled down the interior of the tower. The original mercury slipring was removed after the mercury froze.
Doing the same thing with two hydraulic tubes seems possible, but would require hydraulic fittings that don't leak when the tube is tweaked a little. That might require a little development money...
Mike Halloran
Pembroke Pines, FL, USA
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
"Nobody expects the Spanish Inquisition! "
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
"Nobody expects the Spanish Inquisition! "
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Independent events are seldomly independent.
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
"I love deadlines. I love the whooshing noise they make as they go past." Douglas Adams
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Independent events are seldomly independent.
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
But one nagging issue is earthquake loads- the massive load at the top of an 80 story column must generate unbeleivable horizontal shear forces during an earthquake- I would expect the insurance coverage of the wind farms excludes earthquakes.
"Nobody expects the Spanish Inquisition! "
RE: 130m long blade by GE- fabric over frame- 20 MWe , 80 stories tall
Independent events are seldomly independent.