Took the weans a walk away up the back of The Three Towns in Ayrshire where they are installing these big bad boys.

  • Gormolius@lemmy.one
    link
    fedilink
    English
    arrow-up
    2
    arrow-down
    1
    ·
    1 year ago

    Trailing edge you say? So not designed to mince up birds, that’s a relief.

      • GreyShack@lemmy.world
        link
        fedilink
        arrow-up
        8
        ·
        1 year ago

        Most of the bird deaths are not actually physical strikes - it is a result of the massive change of air pressure as the blades pass at speed. Evidently painting one of the blades black - or some contrasting colour - keeps a lot of the birds well away.

          • GreyShack@lemmy.world
            link
            fedilink
            English
            arrow-up
            2
            ·
            1 year ago

            I realise that I had mis-remembered this. It is primarily bat deaths that are caused by the air pressure changes around turbines - not birds. This is because bats have a particularly large and thin lung internal membranes which gives them high efficiency. The rapid decompression in the immediate wake of the turbine blades - particularly towards the tips, which are the fastest moving part of course - damages this membrane.

            Birds have more compact lungs and hollow bones which aid in their breathing - a different solution to the efficiency problem and one that is not as susceptible to these pressure changes.