newshound wrote:
On 08/05/2021 16:41, ARW wrote:
On 08/05/2021 08:54, Richard wrote:
On 07/05/2021 18:49, ARW wrote:
Passed it on the way home today.

http://wiki.diyfaq.org.uk/index.php/...inefailure.jpg


https://goo.gl/maps/7EBknYb84rb1BDG37

shows the location.

Nasty scratch that. Car body filler?

What you cannot see on that photo (as I was driving when I took it) is
that the blade has split into two. Half of it is hanging down the
front of the tower but as it is white on white you cannot see it.

Manufacturing defect, bird-strike, overspeed, or any combination of
these by the sound of it.

The blades are in the furled position.

It's pretty difficult to come up with a brake for
these things.

The small wind turbines, they have a mechanical brake.
When the wind gets at those, it causes the mechanical
brake to heat up so much, the generator casing catches fire.

On the larger ones, you can short out the generator to
make a braking effect, but then if the wind gets at
it, it can overheat and destroy the generator.

Even if furled, it's probably spinning in some direction,
and if no brake was used, anything could happen.

Paul