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On 2025-05-12 16:36, Martin Brown wrote:On 10/05/2025 17:58, John Robertson wrote:>On 2025-05-10 9:46 a.m., Bill Sloman wrote:
...
>>Perhaps for systems that have large solar or wind arrays they could
use a number of large rotating masses to smooth over these burps?
Vacuum and magnetic bearings...
They are intrinsically dangerous if they store enough energy to really
matter. We had such a steel reinforced lead flywheel and motor generator
configuration on big radio telescopes storing just enough energy to stow
them in the event of a storm taking out 3 phase mains power. The dishes
can only reliably survive storms if they are pointed at the zenith.
(sometimes not even then)
Working out how far it would travel if it ever broke free from its very
substantial bearings was used as an exam question. It was installed
pointing so that it would not hit any property if it did.
It would affect earth rotation, too. Some huge water reservoir in China
is affecting it already.
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