Challenges of a Landscape Photographer
Oct 29, 2018 22:46:42 #
artBob wrote:
And such a simple original post! Must be wind hornets about. :-)
Having seen and photographed both your subjects, I hope you get to explore the wind turbines and share some shots with us.
Contributing to the tangents. Blades are often shipped to a port nearby, then hauled on semis. Man, is a wind turbine blade ever BIG!
Having seen and photographed both your subjects, I hope you get to explore the wind turbines and share some shots with us.
Contributing to the tangents. Blades are often shipped to a port nearby, then hauled on semis. Man, is a wind turbine blade ever BIG!
It is amazing how large the "heads" are on these things. Photographically, I am amazed at their size. I've seen them going up and am amazed at the assembly on the ground prior to their assembly on the "stalk."
Oct 29, 2018 23:43:42 #
Toby wrote:
Interesting stat. Locally they fought to install a... (show quote)
While the rotation may be relatively slow, the speed at the tips is very high. "The B75 turbine blade itself is 75 meters long, while the entire rotor assembly measures 154 meters in diameter. As it spins, the blades cover an area of 18,600 square meters—that's roughly two and a half soccer fields—at a brisk 80 meters per second, or 180 MPH at the tips.Jul 31, 2012"
Oct 30, 2018 02:59:22 #
CarsonSmitty
Loc: Carson City Nevada
Real question: if a mass of air approaching a windmill contains a fixed amount of potential and kinetic energy, and as it passes the windmill gives up some of the energy to turn the blades of the windmill, will the temperature be lower downwind? Or will the pressure in the mass be reduced? What changes in the air occur while energy is extracted from it.
Oct 30, 2018 08:04:24 #
CarsonSmitty, interesting thought. I would think that the mass of wind, it's huge volume, and the small size of the turbines compared to the volume of wind would be no more than a the same impact of a small hill on wind flow.
Or for that matter a large forest.
Ken
Or for that matter a large forest.
Ken
Oct 30, 2018 09:48:01 #
Longshadow wrote:
Other than fronts, usually caused by the sun heating the land and causing onshore winds.
Land breeze and Sea breeze.... Ah, the days of my 18 ft. Hobie Cat chasing the wind and heading towards Mexico until the top of the Don was just a speck and the swells were a reminder to change tack...
Oct 30, 2018 12:03:21 #
Tim Stapp wrote:
Question: given man's proclivity to "screw things up environmentally:" given that what causes them to spin is resistance to air flow an the predominately westerly wind airflow, are the ultimately slowing the rotation of the earth??? Just asking.
Yes, they undoubtably are, it is absolutely settled science, and no academic or scientific researcher worth his government grant would question that the earth's rotation will continue to slow down until it ultimately reverses, creating a space-time vacuum warp wormhole and the dinosaurs will return! Wow, what photo ops those will present! Bring it on!!!
Oct 31, 2018 11:30:22 #
The worst part about wind generators is that the blades often use very large quantities of harder to find balsa wood, pulling down world supplies. Environmentally not good considering the sensitive growing regions for balsa. We RC model airplane guys are feeling it, and foam is often being subbed for wood. When they come up with better core methods for the blades, all should be enhanced. Maybe a foam with grain!
Nov 2, 2018 10:50:15 #
dickwilber
Loc: Indiana (currently)
Tim Stapp wrote:
Wind Turbines... Question: given man's proclivity to "screw things up environmentally:" given that what causes them to spin is resistance to air flow an the predominately westerly wind airflow, are the ultimately slowing the rotation of the earth??? Just asking.
The earth's rotation is being slowed down by the gravitational pull of the moon, by the tides. Is the added resistance of these minuscule fans stuck up into the air moving around the earth adding to this slowing? I wouldn't lose any sleep over it.
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