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Comment Segmented blades exist (Score 1) 184

Just after reading this, I watched this video, which shows Envision's two-bladed prototype turbines, which clearly have segmented blades! It appears that the inner portion is fixed, while the outer portion pivots. This allows them to pivot the blades independently to actively cancel out dynamic forces:
https://www.youtube.com/watch?...
It also makes the maximum load to transport shorter. It doesn't seem like they've released blade length information though.

A bit of research shows that segmented blades are an active topic of research and design. Not a crazy idea.

Comment Distilled water and warm oven (Score 1) 512

I've had luck rescuing a digital camera which was immersed in a dirty puddle by taking off the cover, rinsing the circuit boards with distilled water, and then putting everything into the oven.

In particular, put the oven on its lowest setting - hopefully around 150 deg F - significantly below boiling. Let the oven heat up first, then put your electronics inside and let them cook for several hours, even overnight. This will evaporate the water out. Then take your electronics out of the oven and let them cool before testing.

The advice to clean with alcohol might work as well or better (I haven't tried it), but I would trust that alcohol would dissolve the contaminants that came with your dirty water. Since the contaminants dissolved out of water in the first place, you should be able to get rid of them with water.

Seth

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