Ovaloid netting system

There is the ovaloid netting system that is the natural result of the reversal of helical windings over the end of the vessel. The windings become thicker as they converge near the polar fittings. In order to resist internal pressure by constant filament tension only, the radius of curvature must increase in this region. It can also be equal to one half the cylinder radius when the helix angle a = 0°, and equal to the cylinder radius when a = 45°. The profile will also be affected by the presence of an external axial force. 

There is the ovaloid netting system that is the natural result of the reversal of helical windings over the end of the vessel. The windings... 

---