11–20 of 178 posts
123 meter blades, that’s insane. This means the tip of the blade travels 772 meters in a single rotation. The speed of sound is 340 meters per second, meaning if it travels more than 0.44 rotations in a second, the tips of the blades are breaking the sound barrier.
How do bird deaths from wind turbines compare to other manmade objects?
123 meter blades, that’s insane. This means the tip of the blade travels 772 meters in a single rotation. The speed of sound is 340 meters per second, meaning if it travels more than 0.44 rotations in a second, the tips of the blades are breaking the sound barrier.
If they do break the sound barrier, that's also when the efficiency drops iirc. So I guess they'll switch it to a heavier load or RPM, or apply the brakes? Not sure how that works for a wind turbine
Curious about what is the upper limit. How much can we go beyond 16 MW before physics laws put a cap on size?
@Twosdai - I was talking about space generators, there is no air. So how get spin, from temperature diffs that can turn a turbine/generator?
123 meter blades, that’s insane. This means the tip of the blade travels 772 meters in a single rotation. The speed of sound is 340 meters per second, meaning if it travels more than 0.44 rotations in a second, the tips of the blades are breaking the sound barrier.
Birds won't be happy, unfortunately. Yet, better than wrecking Earth's cycles by pumping to much garbage in the atmosphere like we do today.
The choice, if between coal-fired plants and windmills should be pretty obvious to birds. Sure we may not see them getting splashed to bits with coal-fired plants but they are silently getting ill/dying over time.
123 meter blades, that’s insane. This means the tip of the blade travels 772 meters in a single rotation. The speed of sound is 340 meters per second, meaning if it travels more than 0.44 rotations in a second, the tips of the blades are breaking the sound barrier.
123 meter blades, that’s insane. This means the tip of the blade travels 772 meters in a single rotation. The speed of sound is 340 meters per second, meaning if it travels more than 0.44 rotations in a second, the tips of the blades are breaking the sound barrier.
If they do break the sound barrier, that's also when the efficiency drops iirc. So I guess they'll switch it to a heavier load or RPM, or apply the brakes? Not sure how that works for a wind turbine
123 meter blades, that’s insane. This means the tip of the blade travels 772 meters in a single rotation. The speed of sound is 340 meters per second, meaning if it travels more than 0.44 rotations in a second, the tips of the blades are breaking the sound barrier.
If they do break the sound barrier, that's also when the efficiency drops iirc. So I guess they'll switch it to a heavier load or RPM, or apply the brakes? Not sure how that works for a wind turbine
But, AFAIK, windmills wre immobilized when the wind gets too strong, in order to protect them. If the tech allows it, they can also be made to catch less window. Some Dutch wind mills could be rotated, and the cloth covering the arms could cover less surface. Modern windmills adapt their position automatically. Look at [0] and search for "Ten Have / Beckers".
123 meter blades, that’s insane. This means the tip of the blade travels 772 meters in a single rotation. The speed of sound is 340 meters per second, meaning if it travels more than 0.44 rotations in a second, the tips of the blades are breaking the sound barrier.
Do you transport something like this in pieces, or as a single blade?
[1] https://www.doll.eu/de/produkte/schwertransport/nachlaeufer-...
[2] https://www.wiwo.de/technologie/wirtschaft-von-oben/wirtscha...
123 meter blades, that’s insane. This means the tip of the blade travels 772 meters in a single rotation. The speed of sound is 340 meters per second, meaning if it travels more than 0.44 rotations in a second, the tips of the blades are breaking the sound barrier.
Do you transport something like this in pieces, or as a single blade?