Donut sealed pontoon system

[panyuming]

 

[panyuming]

The pontoon structure was improved.

In order to speed up the pontoon running line speed,
the two ends of the pontoon should be made into a conical shape to reduce the resistance of the pontoon in the water.
In this way, the hinge is placed on the axis line of the pontoon,
so that the pulling pontoon has no eccentric moment, eliminating the hook for balancing the torque,
The pontoon structure was also simplified.

The pontoon in Figure 7 is made of PVC finished pipe, the size is mm,
and the air volume in the pontoon is slightly greater than 5 liters.

[panyuming]

Figure 8 is a possible system schematic.
The total height of the entire system is about 8 meters.
The effective height for generating buoyancy is about 4 meters, with 10 pontoons containing more than 50 liters of air, perhaps 50kg buoyancy.
If the pontoon string runs at a speed of 1 m/s, there is about 490W of power.
Excluding various losses, about 300W of effective power may be output.
Even if there is no fuel and no input, such a large-sized machine, only 300W of power, is too small.

[panyuming]

 
Stay in the future Waterworld

[Willy]

A very nice study in buoyancy, I think.
Its nice to see some variations in approach.

In simplifying the design down to a few points.

What is ?

The energy as force against water pressure upon a pontoon at depth required in
order to pass it through the seal, multiplied times the length of pontoon that will
pass through the seal.

The force as weight of the pontoons on the right while in air

The force as buoyancy of the pontoons on the left while submerged.