• 33550336@lemmy.worldOP
      link
      fedilink
      English
      arrow-up
      11
      ·
      8 months ago

      Helicopter can also go into autorotation mode, i.e., to “gently” land even with engine failure. I think airships has no moving parts, what’s safe, and with the gas leak, I think it is rather slow process, so it would be easy to gently land.

      • 5too@lemmy.world
        link
        fedilink
        English
        arrow-up
        7
        ·
        edit-2
        8 months ago

        Yep, airships aren’t overpressurized like a balloon - any leak will be extremely slow, as the heavier ambient air gradually displaces the helium inside the airship through whatever hole might be created. As I understand it, one of the big maintenance issues they have is even finding the holes from normal wear and tear. The usual failure scenarios involve storms with huge pressure changes.

        • 33550336@lemmy.worldOP
          link
          fedilink
          English
          arrow-up
          2
          ·
          8 months ago

          Helium could be detected with some specialized detectors, but I suppose approximately – so, as you said, finding exact leak place is challenging.

          • Imgonnatrythis
            link
            fedilink
            English
            arrow-up
            3
            ·
            8 months ago

            If it was even slightly heated couldn’t you maybe visualize it with thermal imaging?