Gas cell

With preps started – in the next stage we started planing for an actual gas bag. Using our brand new whiteboard we’ve drafted this.

Well it might not look that super clear, so I’ve prepared a sketch in the OpenSCAD.

If you are interested, here comes the code.

module GasBagMiddle() {
  D() {
    union() {
      %D() {
        cylinder(25, 25, 25);
        Tz(0.01)
        cylinder(25 -.02, 25-.02, 25-.02);
        Tz(-0.01)
        cylinder(25 +.02, 5, 5);
        Tz(-0.01)
        cube(25+0.02);
      }
      D() {
        cylinder(25, 5, 5);
        Tz(0.01)
        cylinder(25 -.02, 5-.02, 5-.02);
      }
      n=8;
      for(w=[0:360/n:359]) {
        Rz(w)T(15, 0, 12.5)
        cube([20,0.1,25], center = true);
      }
    }
    Tz(-0.01)
    cylinder(25+0.02, 5-.01, 5-.01);
    Tz(-0.01)
    cube(25+0.02);
  }
}

You may now wonder what are you looking at, so that is a model of our gas cell – actually the middle one. It will be wrapped around one of our central ducts – that’s why there is that central hole. It also comes with internal partitioning, to support holding a shape and one quarter is missing as it forms an internal opening for airship’s technical background.

So we started drawing and cutting – a lot.