Would it be possible to make a windmill out of a car alternator?

With the proper gear reduction, you can get the necessary rpms in the generator in order for the electricity that's produced to be in sync with the power on the grid. Aside from that, if the blades spun faster, then there a whole host of engineering problems that you'd have to deal with. Excessive vibrations leading to complete failure of the machine would be a primary concern.

Then there's the effect on wildlife, in particular the birds. Spinning as slowly as they do right now, birds are able to avoid the blades. Speed that up and the clean energy suddenly becomes a tool for the extinction of any number of species.

Think about how fast that blade tip is moving. The average blade is about 150 ft long. If that blade makes 1 complete rotation in 3 seconds, then it is moving 150 * 2 * pi / 3 ft per second or about 314.16 feet per second.

314.16 * 22/15 => 461 mph. The tip of that blade is moving at an equivalent of 461 mph. Any faster and you're looking at blade tips that are dangerously close to moving at mach speed, which would completely destroy the blade.

So do you want a "slow" windmill that continually produces energy or a faster one that breaks down, kills wildlife, collapses, causes massive amounts of damage to the surrounding area and is unbelievably dangerous?

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.

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