Tidal Support Structure

The principle of the Snail is based on the familiar upturned aerofoil found on most racing cars. A number of hydrofoils are mounted on a frame in such a way as to induce a downforce from the streamflow. From the expression of force generated by a moving fluid, as the flow speed increases, so does the overturning moment on the HATT and the downforce on the foils. Provided that the ratio of surface areas is such that the downforce generated exceeds the overturning moment then the Snail will remain in position. Similarly, if the combination of self-mass and downforce exceeds the horizontal drag force applied, then the Snail will remain in place Thus, the Snail provides a stable, secure positioning without the need for physical attachment to the seabed.

Key Benefits

It is simple and cheap
It is effective and quick
Most importantly, it has already been proven in the lab and tested at sea level.

Applications

Marine renewables
Marine data acquisition
Run-of-river installations
Disaster relief

IP Status

Proof of Concept

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